[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Fridman, Daniel"]
[Black "Ivanov, Mike"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2640"]
[BlackElo "2262"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,116,35,57,59,54,54,53,37,54,66,63,33,25,34,60,70,68,79,75,75,76,74,95,96,113,65,75,-74,-57,-57,0,0,0,0,0,0,39,0,40,43,92,91,108,93,106,50,93,59,100,95,147,114,161,147,148,154,145,29,178,184,196,106,131,67,85,77,83,14,2,-1,-5,-168,-108,-385,-145,-144,0,-378,0,-159,0,-406,-381,-378,-375,-387,-335,-327,-325,-325,-297,-322,-319,-315,-300,-300,-288,-279,-275,-992,0,-12,0,0,0,0,0,0,0]} 1. Nf3 Nc6 2. d4 d5 3. e3 Bg4 4. Bb5 e6 5. c4 Bb4+ 6. Bd2 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} Bxd2+ 7. Nbxd2 ({Much worse is} 7. Kxd2 dxc4 8. Bxc6+ bxc6 $11) 7... Nge7 8. h3 {[%cal Bh2h3,Bh3h4,Bh4h5][%mdl 32] White is slightly better.} Bh5 9. cxd5 exd5 10. g4 $146 ({Predecessor:} 10. Qb3 Rb8 11. Ne5 O-O 12. Bxc6 Nxc6 {½-½ (43) Terrieux,K (2434)-Philippe,C (2422) Mulhouse 2011}) 10... Bg6 11. h4 a6 12. Bxc6+ Nxc6 13. h5 Be4 14. Nxe4 dxe4 15. Nd2 $1 Qe7 16. Qb1 $1 Nb4 17. Nxe4 O-O-O 18. f3 (18. a3 $16 {keeps the pressure on.} Nd5 19. Qd3) 18... g6 $1 $17 {And now ...f5 would win.} 19. g5 h6 (19... gxh5 $15 20. Kd2 (20. Rxh5 h6 $11) 20... Nd5) 20. hxg6 $11 {Threatens to win with g7.} hxg5 21. Rxh8 Rxh8 22. g7 Rg8 {Hoping for ...f5.} 23. Kd2 {aiming for Ng3.} Rxg7 24. Nc5 Rg8 25. a3 Nc6 26. Qf5+ $1 Kb8 27. Rc1 (27. Rh1 $16) 27... Re8 28. Ne4 g4 29. Qxg4 Na5 ({Better is} 29... Qd8) 30. Ke2 b6 31. b4 Nb7 32. Qf4 Rg8 33. Kf2 ({White should play} 33. Nf6 $16 Rg2+ 34. Kd3 (34. Kf1 Ra2 $16)) 33... a5 (33... f5 $1 $11 {and Black is okay.} 34. Qxf5 Qh4+ 35. Ke2 Qh2+ 36. Nf2 Rg2) 34. Nf6 $18 Rd8 35. bxa5 (35. Ng4 $18) 35... Nxa5 $16 36. Rc3 (36. a4 $16) 36... Rd6 $14 37. Ne4 Rg6 38. d5 (38. Ng3 $16) 38... Nb7 $1 $11 39. Qh2 f5 40. Nd2 $2 (40. Rc6 $1 $11 Rxc6 41. dxc6) 40... Qg7 $1 $19 {[%cal Rg7c3][%mdl 1024] Black has strong compensation.} 41. Rd3 $2 {[%mdl 8192]} (41. Rc6 $17) 41... Rh6 $2 (41... Nc5 $19 42. Rd4 f4 $1 {[%mdl 512]}) 42. Qg3 $17 Rg6 $2 $40 {[%mdl 128] Black attacks.} (42... Qb2 $17 43. Rd4 Nd6) 43. Qh2 $19 Rh6 (43... Nc5 $19 44. Rd4 f4 $1 {[%mdl 512]}) 44. Qg3 $17 Rg6 $2 (44... Qb2 $17 45. Rd4 Nd6) 45. Qh2 $19 Nc5 46. Rd4 {[#]} f4 $1 {[%mdl 512]} 47. d6 {[#]} (47. Rxf4 Nd3+) 47... Rg2+ $1 {[%mdl 512]} 48. Qxg2 fxe3+ 49. Kf1 Qxd4 50. Qg8+ Kb7 51. dxc7 Qd3+ 52. Kg1 Kxc7 53. Qf7+ {[#]} Kb8 $1 54. Ne4 $2 (54. Nc4 Qd1+ 55. Kg2) 54... e2 $2 (54... Qd1+ $19 55. Kh2 e2 56. Qf4+ Kb7) 55. Qe8+ {The position is equal.} Ka7 56. Qe7+ Nb7 57. Kf2 {[#]} e1=Q+ $1 {[%mdl 512]} 58. Kxe1 Qe3+ {Precision: White = 39%, Black = 38%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Jumabayev, Rinat"]
[Black "Holtman, Teodor"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2610"]
[BlackElo "2252"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,59,21,43,34,35,31,53,52,50,28,53,49,49,55,46,54,74,79,96,83,118,37,71,22,124,101,115,112,220,208,218,231,207,164,392,403,415,399,849,830,29986,29987,29991,29992]} 1. Nf3 f5 2. g3 Nf6 3. Bg2 g6 4. b3 Bg7 5. Bb2 O-O 6. d4 d6 7. O-O c6 8. c4 Na6 9. Nc3 Rb8 10. Rc1 {A88: Dutch Defence: Leningrad System: 5 Nf3 0-0 6 0-0 d6 7 Nc3 c6} Bd7 11. a3 $146 ({Find the theoretical novelty and annotate with similar games:} 11. d5 Nc5 12. Nd4 Qb6 13. e3 a5 14. Qe2 Rbc8 15. Rfd1 a4 16. Nxa4 Nxa4 17. bxa4 cxd5 18. cxd5 Bxa4 19. Rxc8 Rxc8 {0-1 (52) Bu,X (2715)-Lu,S (2607) Shenzhen 2016}) 11... Nc7 12. b4 {White is slightly better.} Kh8 13. Qd3 b5 14. cxb5 Nxb5 15. Nxb5 Rxb5 16. Nd2 {[%cal Bf3d2,Bd2c4,Bc4a5][%mdl 32]} Nd5 17. Nc4 Qb8 18. Rc2 f4 19. Qd2 (19. e4 $16) 19... Qe8 20. Na5 g5 (20... Bf5 $11 {keeps the balance.}) 21. Rfc1 {[%cal Ra5c6]} Rb6 (21... fxg3 $2 22. hxg3 Nb6 23. e4 $18 (23. Nxc6 Rbf5 $18) (23. Bxc6 Rbf5 $16)) 22. e4 {[%cal Be2e4,Be4d5][%mdl 32]} Nf6 {[#]} (22... fxe3 $16 {is a better defense.} 23. fxe3 Nf6) 23. d5 $1 $18 (23. gxf4 gxf4 24. f3 (24. Qxf4 Nh5 $11) 24... Nh5 $16) 23... cxd5 24. exd5 Qh5 25. Qe2 $36 {[%mdl 2048] Keeping Black busy.} ({Not} 25. gxf4 gxf4 26. Qe2 (26. Qxf4 Bh6 $11) 26... Qg5 $14) 25... Bg4 $2 (25... Qxe2 {might work better.} 26. Rxe2 Ng8) 26. Qxe7 {Bxf6 would kill now.} Re8 27. Qxa7 f3 $2 (27... Rbb8 28. Rc7 Ra8) 28. Rc7 fxg2 29. Rxg7 Qh6 {[#]} 30. Qf7 $1 {[%mdl 512] Precision: White = 75%, Black = 24%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Tregubov, Pavel V"]
[Black "Pedersen, Nicolai Kvist Brond"]
[Result "1-0"]
[ECO "E47"]
[WhiteElo "2593"]
[BlackElo "2238"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,83,9,39,36,30,37,36,38,77,68,75,57,69,62,61,59,67,65,63,-7,46,46,65,74,67,47,78,62,82,85,85,86,82,67,236,234,207,81,76,93,81,65,144,135,167,164,133,143,164,113,241,176,170,168,179,177,177,177,29976,29978,29982,29981,29996,29997]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nge2 cxd4 7. exd4 d5 8. cxd5 Nxd5 9. O-O Nc6 10. Nxd5 Qxd5 11. a3 Be7 12. Qc2 {E48: Nimzo-Indian: Rubinstein: 5 Bd3 d5 including 6 Ne2, but excluding 6 a3} g6 13. Rd1 Bf6 14. Be4 {White is slightly better.} Qd8 {[#]} 15. Bxc6 $146 ({Find the theoretical novelty and annotate with similar games:} 15. Bh6 Re8 16. d5 exd5 17. Bxd5 Qe7 18. Ng3 Be6 19. Ne4 Nd4 {0-1 (56) Tregubov,P (2585)-Inarkiev,E (2709) Doha 2016}) 15... bxc6 16. Bf4 Ba6 17. Ng3 Qb6 18. Be5 Be7 19. Ne4 f6 20. Bg3 (20. Bf4 $14) 20... Rad8 (20... f5 $1 $11 21. Bd6 Bxd6 22. Nxd6 Rad8) 21. Nc5 $14 Bc8 22. b4 Rd5 23. Qe4 Bxc5 24. dxc5 Qb7 25. Bd6 Rf7 26. f4 {[%cal Bf2f4,Bf4e5][%mdl 32]} Bd7 27. h3 e5 $2 (27... Qa6 $14) 28. fxe5 $18 f5 29. Qe2 (29. Qh4 $18 {has better winning chances.} Rxd1+ 30. Rxd1) 29... Rxd1+ $16 30. Rxd1 {[#] e6 is the strong threat.} Be6 31. Rd4 f4 (31... Kg7 $14) 32. Qf3 Kg7 33. Rxf4 Rxf4 34. Qxf4 {[%csl Gd6][%cal Rf4f8]} Qf7 35. Qd4 (35. Qe4 $18) 35... Qb7 (35... a6 $16 {was worth a try.} 36. Qh4 h5) 36. Qh4 {White wants to mate with Qf6+.} Qf7 37. Be7 {Black must now prevent b5!} h6 38. b5 cxb5 {[#]} 39. c6 $1 $36 {[%mdl 2048] Strongly threatening Bf6+. Black is under strong pressure.} Qf5 $2 (39... g5 $18 40. Bf6+ Kg6) 40. Bf6+ {White mates.} Kh7 41. Qb4 Bf7 42. Qf8 {Precision: White = 73%, Black = 35%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Kryakvin, Dmitry"]
[Black "Yuferev, Oleg"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "2583"]
[BlackElo "2233"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,104,6,-2,1,-7,-10,-33,-18,-23,-6,-12,-15,-14,-11,-16,0,0,6,10,6,8,27,10,18,0,-8,-19,0,0,0,0,0,0,8,5,10,10,12,0,0,0,0,0,0,0,0,-35,-35,-39,-36,-36,-36,-43,-45,-53,-44,-81,-81,-88,-81,-93,-111,-130,-130,-130,-130,-145,-145,-157,-121,-138,-65,-59,-58,-80,-86,-166,-78,-75,-74,-121,-59,-59,-59,-59,-59,-59,-59,-64,-8,-8,-8,-8,-8,-8,-8]} 1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. a3 b6 6. b4 {b5 is the strong threat.} Bb7 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7} 7. Bb2 (7. Rb1 Rb8 8. Nf3 Nf6 9. O-O O-O 10. e3 cxb4 11. axb4 d5 12. cxd5 Nxd5 13. Nxd5 Qxd5 14. d4 {1-0 (51) Grischuk,A (2747)-Ponomariov,R (2706) Almaty 2016}) 7... d6 8. Qb1 $146 (8. b5 $5 {[%cal Rb5c6]} Na5 9. Bxb7 Nxb7 10. Nf3 $11) ({Find the theoretical novelty and annotate with similar games:} 8. Nh3 Qd7 9. Qa4 h5 10. Nf4 h4 11. g4 e6 12. h3 Nge7 13. Rb1 O-O 14. g5 {½-½ (32) Semcesen,D (2387)-Rusev,K (2498) Ballerup 2009}) 8... Qd7 {Black is slightly better.} 9. Nf3 Nd4 10. O-O Nxf3+ 11. exf3 Nf6 12. Ne4 O-O 13. Nxf6+ Bxf6 14. Bxf6 exf6 15. d4 d5 16. dxc5 dxc4 17. Rc1 Bd5 18. Qb2 Qf5 19. Qd4 bxc5 20. Qxc5 Rfc8 21. Qd4 Qe5 22. Qxe5 fxe5 23. Rc3 Rab8 24. Re1 {[#]} a5 $1 {[%mdl 512]} 25. Rxe5 (25. bxa5 Rb3) 25... axb4 26. axb4 Be6 27. b5 Bd7 28. Bf1 Rxb5 29. f4 Rb1 $36 {[%mdl 2048] ( -> ...Bh3). Black has good play.} 30. Kg2 $1 Be6 31. Be2 Rb3 32. Ree3 Kf8 33. Kf3 Bd5+ 34. Kg4 Rxc3 35. Rxc3 $17 {[%mdl 4096] Endgame KRB-KRB} Ke7 36. f5 Kd6 $1 37. Kg5 Ke5 38. fxg6 hxg6 39. h4 Kd4 40. Rc1 Be6 (40... Re8 $17 41. Rd1+ Kc5) 41. g4 $15 c3 {Hoping for ...Bb3.} 42. h5 gxh5 43. gxh5 {[#]} c2 (43... Rc5+ $1 $19 {has better winning chances.} 44. Kf4 c2) 44. Kf6 $17 {[#]} Bb3 $1 45. Kg7 f5 (45... Rc6 $17 46. Bf3 Rb6) 46. h6 $15 Kc3 47. h7 Kd2 $1 {[%csl LRc1,LRe2]} 48. Rxc2+ $1 Bxc2 49. Ba6 Rc7+ ({Black should play} 49... Rb8 $15 50. h8=Q Rxh8 51. Kxh8 f4) 50. Kh6 $11 {[#]The position is equal.} Rxh7+ $1 {[%mdl 512]} 51. Kxh7 f4+ 52. Kh6 $1 Ke1 {Precision: White = 60%, Black = 67%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Kulaots, Kaido"]
[Black "Scott, Gordon W"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2577"]
[BlackElo "2218"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,45,9,9,9,8,13,0,0,3,54,54,47,46,56,35,37,31,43,40,41,31,111,121,261,253,261,222,215,241,490,474]} 1. e4 e6 2. d3 d5 3. Qe2 Nc6 4. Nf3 Nf6 5. e5 Nd7 6. g3 {C00: French: Unusual White 2nd moves} f6 7. exf6 Qxf6 8. Bg2 Bd6 9. O-O {LiveBook: 4 Games} O-O {[#]} 10. d4 $146 {[%mdl 512]} ({Predecessor:} 10. c4 Nc5 11. Nc3 dxc4 12. dxc4 {½-½ (32) Adams,M (2725)-Meier,G (2640) Baden-Baden 2013}) 10... Kh8 (10... Nxd4 11. Nxd4) 11. c3 e5 {[%cal Re5d4]} 12. Be3 Nb6 (12... Qg6 $11) 13. dxe5 Nxe5 14. Nxe5 Qxe5 15. Nd2 c6 16. a4 Bf5 17. a5 $36 {[%mdl 2048] White is more active.} Nd7 18. a6 bxa6 ({Black should play} 18... b6 $14) 19. Qxa6 $16 Rab8 (19... Rac8 $16) 20. Qxc6 Rfc8 21. Qxd5 Qxd5 22. Bxd5 Rxb2 $2 {[#]} (22... Bc5 23. b4 Bxe3 24. fxe3 Bd3) 23. Nc4 {Precision: White = 93%, Black = 24%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Vorobiov, Evgeny E"]
[Black "Semjonovs, Ilja"]
[Result "1-0"]
[ECO "A35"]
[WhiteElo "2569"]
[BlackElo "2216"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,55,43,37,64,58,67,43,44,43,44,50,64,53,52,49,49,55,58,55,56,-25,-25,-33,32,39,77,73,152,0,137,176,511,505,936,912,965,979,970,955,1388,1377]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 d6 6. e4 g6 7. f3 Bg7 8. Be3 O-O 9. Be2 Nxd4 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0} 10. Bxd4 Be6 11. Rc1 (11. O-O Qa5 12. Rc1 Rfc8 13. b3 a6 14. f4 b5 15. f5 Bd7 16. Bxf6 Bxf6 17. Nd5 Bg5 18. Rc3 e6 19. Rg3 Bh4 20. Rg4 {1-0 (30) Efimenko,Z (2651)-Korobov,A (2692) Rivne 2016}) 11... a6 {White is slightly better.} 12. O-O Rc8 13. b3 Nd7 14. Bxg7 Kxg7 15. f4 $146 {Threatens to win with f5.} f6 16. Kh1 Qa5 17. Qd3 Rc7 18. Qg3 ({Better is} 18. a4 $14) 18... b5 $1 $11 {[%cal Rb5c4]} 19. Bg4 Bxg4 ({Black should play} 19... Bg8 $15) 20. Qxg4 $14 f5 21. Qe2 {Hoping for Nd5.} Nb6 {[#]} (21... Nf6 $142) 22. e5 $2 (22. c5 $1 $16 {[%mdl 512]}) 22... bxc4 (22... Qb4 $11 {keeps the balance.}) 23. exd6 $16 exd6 $2 (23... Rb7 {is a better chance.}) 24. Qb2 $18 {And now b4 would win.White is clearly winning.} Rb7 (24... Na4 $142 25. bxa4 Kg8) 25. b4 Nd5 26. Nxd5+ {[%cal Bc3d5,Bd5f6,Bf6h7][%mdl 32]} ({Not} 26. bxa5 Rxb2 27. Nxd5 Rxa2 $18) 26... Kg8 27. Nf6+ Kf7 28. Nxh7 {Precision: White = 62%, Black = 35%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Ghosh, Diptayan"]
[Black "Laimins, Lauris"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "2562"]
[BlackElo "2213"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,55,4,58,24,104,48,85,85,85,85,87,83,89,90,97,83,72,58,147,129,193,187,187,183,175,177,195,201,237,237,291,245,260,190,193,208,274,260,337,291,419,422,890,733,714,708]} 1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nc3 a6 5. Nf3 Bf5 6. Ne5 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} (6. Be2 h6 7. Qb3 b5 8. cxd5 cxd5 9. a4 b4 10. Qxb4 Nc6 11. Qb3 e6 12. O-O Bd6 13. a5 O-O {½-½ (102) Wojtaszek,R (2736)-Fedoseev,V (2726) Dortmund 2017}) 6... b5 {LiveBook: 6 Games} (6... Nbd7 $11) 7. g4 Be6 $146 (7... Bc8 $1 $11) ({Predecessor:} 7... Bc8 8. cxd5 cxd5 9. g5 Ne4 10. Nxe4 dxe4 11. a4 b4 12. Bg2 Bb7 13. Qg4 Qd5 14. Bd2 a5 15. Rc1 Nd7 16. Bxe4 {1-0 (16) Fridman,D (2571)-Jirka,J (2400) Pardubice 2002}) 8. c5 (8. g5 $16) 8... Qc8 {[%cal Rf6g4]} 9. f3 g6 10. h4 h5 {[%cal Rh5g4]} 11. g5 Nfd7 {With the idea ...Nxe5.} 12. Nd3 Bg7 13. Be2 Qc7 14. a4 bxa4 (14... Qg3+ $14 15. Kd2 b4) 15. Rxa4 Bf5 (15... Qg3+ $16 {was worth a try.} 16. Kd2 O-O) 16. e4 $36 {[%mdl 2048] Black is under strong pressure.} Qg3+ 17. Kd2 dxe4 18. fxe4 Bg4 19. Kc2 e5 20. d5 {[%cal Bd4d5,Bd5d6][%mdl 32]} Ra7 21. Bd2 Rc7 22. d6 Rb7 23. Qf1 f6 24. Bxg4 Qxg4 25. gxf6 Bxf6 (25... O-O $142 26. Rg1 Rxf6 27. Rxg4 Rxf1 28. Rxg6 Rh1) 26. Rg1 Qxh4 (26... Qe6 $142 27. Rxg6 Rg8) 27. Be1 Qh2+ 28. Bf2 {Precision: White = 74%, Black = 19%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Boruchovsky, Avital"]
[Black "Narva, Mai"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2556"]
[BlackElo "2210"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,73,71,85,37,68,34,47,28,34,43,107,119,131,127,125,37,32,37,18,16,22,16,16,12,20,15,16,16,41,39,39,44,97,94,143,130,158,104,137,135,121,155,130,143,408,413,449,427,421,383,547,203,1022,1015,1358,1295]} 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 Nf6 6. Be2 e6 7. Na3 {[%cal Bb1a3,Ba3b5,Bb5c7][%mdl 32]} Be7 {B22: Sicilian: 2 c3} (7... cxd4 8. Nb5 Qd8 9. Nbxd4 Nxd4 10. Qxd4 Qxd4 11. Nxd4 Bd7 12. Bf4 Nd5 13. Bg3 h5 14. h4 Bc5 15. O-O-O O-O-O 16. Bf3 Ne7 17. Nb3 Bb6 18. Bd6 Nf5 19. Bc5 {½-½ (30) Schneider,I (2481)-Predojevic,B (2639) Austria 2016}) 8. Nb5 Qd8 9. dxc5 Bxc5 10. Qxd8+ Kxd8 {LiveBook: 4 Games} 11. Bf4 a6 12. Rd1+ $146 ({Predecessor:} 12. Nd6 Ke7 13. Nc4 b5 14. Be3 Nd7 15. Bxc5+ Nxc5 {0-1 (42) Caranicas,A-Nakamura,H (2281) Saint Paul 2000}) 12... Ke7 $1 13. Nc7 Ra7 $1 14. b4 Nxb4 ({Better is} 14... Bb6 $1 $14) 15. cxb4 $16 Bxb4+ 16. Kf1 b5 17. Nd4 (17. a4 $16) 17... Bd7 $1 $14 18. a4 {[%cal Ra4b5]} Ba5 $1 {[%cal Ra5c7]} 19. Nxa6 Rxa6 20. Bxb5 Raa8 21. Nc6+ Bxc6 $1 22. Bxc6 {[#] Bd6+ is the strong threat.} Rhd8 23. Ke2 $36 {[%mdl 2048] White has some pressure.} Rac8 24. Rxd8 Bxd8 25. Rc1 Bb6 {[#]} (25... Ba5 $14) 26. Bd2 $1 $16 Ng4 27. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} Ba7 28. f3 ({White should play} 28. Bb4+ Kf6 29. Bd2) 28... Ne5 29. Bb4+ Kd8 30. Rd1+ Kc7 31. Be4 {Hoping for Bd6+.} Nc4 $2 {[%mdl 8192]} (31... Nc6 $16) 32. a6 $18 Kb6 33. Be1 Rc7 34. Rb1+ Kc5 (34... Kxa6 $142 35. Bd3 (35. Bxh7 g6 $14) 35... g6) 35. g3 $2 (35. Bb7 Kd6 36. Bg3+ e5 37. Bf2) 35... Rd7 $2 (35... Kd6 36. g4 (36. Bxh7 g6 $18) 36... e5 37. Rd1+ Kc5) 36. Bf2+ Kd6 37. Rd1+ {Precision: White = 73%, Black = 33%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Shyam, Sundar M"]
[Black "Kirszenberg, Marc"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2547"]
[BlackElo "2204"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,77,4,12,0,46,34,44,34,193,189,203,186,186,191,188,199,231,193,260,250,262,104,191,222,211,197,177,174,197,196,190,167,203,197,215,216,250,252,292,258,255,271,281,279,282,286,281,267,276,276,308,305,326,331,337,318,308,270,283,277,354,377,406,400,456,462]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Bg5 Be6 7. a3 Qd7 (7... dxc4 8. Bxf6 exf6 9. d5 $16) 8. Be2 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack} h6 (8... dxc4 $6 9. Bxf6 gxf6 10. d5 $16) (8... Rd8 9. Bxf6 exf6 10. c5 g6 11. b4 a6 12. b5 axb5 13. Nxb5 Be7 14. Nf3 O-O 15. O-O Ra8 16. Rb1 Rfe8 17. Qd2 {½-½ (17) Amin,B (2654)-Dreev,A (2664) Helsingor 2016}) 9. Bxf6 $1 exf6 10. Bf3 {[%cal Rc4d5] White is slightly better.} dxc4 $146 {[#]} ({Black should play} 10... Ne7 $1 $14) ({Predecessor:} 10... Ne7 11. c5 g5 12. h3 Bg7 13. Nge2 h5 14. Ng3 h4 15. Nh5 Kf8 {½-½ (44) Perunovic,M (2439)-Ratkovic,M (2414) Kragujevac 2016}) 11. d5 $18 Ne5 12. dxe6 Nd3+ 13. Kf1 fxe6 14. Bh5+ Kd8 15. Be2 Bc5 (15... Nxb2 {was called for.} 16. Qc2 Nd3) 16. Bxd3 $1 cxd3 17. Na4 $2 (17. h4 $18) 17... Bb6 (17... Rc8 $16 {keeps fighting.}) 18. Qb3 Ke7 19. Rd1 (19. Nxb6 $6 axb6 20. h4 (20. Qxb6 Rac8 $16) 20... Rhd8 $16) 19... Rhd8 20. Nf3 (20. Nxb6 $6 axb6 21. Nf3 (21. Qxb6 Qa4 $16) 21... Ra5 $14) 20... Rac8 21. Nxb6 axb6 22. g3 (22. Qxb6 Qd5 $16) 22... Rc5 23. Kg2 (23. Qxb6 $6 Rb5 $16) 23... g5 24. Rhe1 {Threatens to win with Rxd3!} ({Much less strong is} 24. Qxb6 Rb5) 24... Qc6 {[#]} 25. Kg1 $1 ({Stronger than} 25. Rxd3 Rxd3 26. Qxd3 g4 $11) 25... Rcd5 26. Qb4+ Kf7 27. Qe4 Rf5 {...Qxe4 is the strong threat.} 28. Nd2 Qxe4 29. Nxe4 ({Weaker is} 29. Rxe4 Rc5 $16) 29... Rfd5 30. f3 f5 31. Nc3 R5d7 32. Re5 Kf6 33. Rb5 Rd6 34. Kf2 h5 35. f4 gxf4 36. gxf4 Rg8 37. Ke3 Rg2 38. Rd2 Rg1 {and the idea ...Re1+ leaves Black hopeful.} 39. Rxd3 {Precision: White = 81%, Black = 27%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Sarana, Alexey"]
[Black "Solozhenkina, Elizaveta"]
[Result "1/2-1/2"]
[ECO "D03"]
[WhiteElo "2540"]
[BlackElo "2200"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,88,0,-4,-6,0,0,-3,20,14,28,20,10,16,13,2,7,11,18,8,8,9,15,15,0,0,0,0,0,0,0,-7,-18,-9,0,0,0,0,25,-43,-29,-15,0,0,0,-4,19,0,0,0,80,0,0,0,0,-12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. d4 d5 3. Bg5 e6 4. e3 Be7 5. Bd3 h6 6. Bh4 O-O {D03: 1 d4 d5 2 Nf3 Nf6 3 Bg5, including Torre Attack with early ...d5} 7. O-O c5 (7... b6 8. Ne5 Bb7 9. Nd2 c5 10. c3 Nbd7 11. f4 a6 12. Qe2 b5 13. f5 exf5 14. Rxf5 g6 15. Bxf6 Nxf6 16. Rf4 Bd6 17. Raf1 Bxe5 18. dxe5 Nh5 19. R4f2 {½-½ (31) Ornstein,A (2338)-Sevian,S (2603) Stockholm 2017}) 8. dxc5 Bxc5 9. c4 Be7 $146 ({Predecessor:} 9... Nc6 10. a3 Be7 11. Nc3 dxc4 12. Bxc4 Nd5 13. Bxe7 Ncxe7 14. Bxd5 exd5 15. Qb3 b6 16. Rfd1 Be6 17. Nd4 Qd7 18. Rd2 Rfd8 19. Rad1 Rac8 20. e4 {1-0 (38) Hamza,A (1883)-Iordanidou,Z (2060) Kemer 2009}) 10. Nc3 dxc4 11. Bxc4 a6 12. Qe2 b5 13. Rfd1 Qb6 14. Bb3 Nc6 15. e4 Nd7 16. Bxe7 Nxe7 17. e5 Nc5 18. Bc2 Bb7 19. b4 Na4 $1 {[%cal Ra4c3]} 20. Bxa4 bxa4 21. a3 Bc6 22. Nd4 Nd5 23. Rac1 Rac8 24. h4 (24. Nxc6 $11 Rxc6 25. Nxd5 (25. Nxa4 Rxc1 26. Rxc1 Qb5 $11) 25... exd5 26. Rxc6 Qxc6 27. Qd3) 24... Nxc3 $15 25. Rxc3 Bb5 (25... Bb7 $5 {[%cal Rc8c3]} 26. Rg3 Rfd8 $11) 26. Qe3 Rfd8 27. Rd2 Qb8 28. Rc5 Rxc5 29. bxc5 Rd5 (29... Be8 $11 {keeps the balance.}) 30. Nf3 ({White should play} 30. Nxb5 $16 Rxe5 31. Rd8+ Qxd8 32. Qxe5 axb5 33. c6) 30... Bc6 $11 {The position is equal.} 31. Rxd5 Bxd5 32. Nd4 Qc7 33. c6 Qb6 $1 34. Qc3 Qb1+ 35. Kh2 {[#] Strongly threatening c7.} Qe4 {[%csl Gd5][%cal Re4g2]} 36. f3 Qxe5+ 37. Kh3 Bxc6 38. Qxc6 Qxd4 {[%mdl 4096] Endgame KQ-KQ} 39. Qe8+ Kh7 {Threatens to win with ...Qf4.} 40. Qxf7 Qe3 (40... Qf6 $5 {[%cal Rf6f7]} 41. Qd7 Qf5+ 42. Kg3 Qe5+ 43. Kh3 Qf5+ 44. Kg3 Qe5+ 45. Kh3 Qf5+ $11) 41. h5 Qxa3 {[#] White must now prevent ...Qd3.} 42. Qg6+ Kh8 {Hoping for ...Qe7.} 43. Qe8+ Kh7 {...Qd3 is the strong threat.} 44. Qg6+ Kh8 {Precision: White = 73%, Black = 68%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Schroeder, Jan-Christian"]
[Black "Horstmann, Olaf"]
[Result "1-0"]
[ECO "C04"]
[WhiteElo "2539"]
[BlackElo "2199"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,77,111,110,144,152,143,146,148,143,150,149,157,128,131,107,179,176,179,169,179,169,174,172,172,173,182,192,192,180,241,228,246,210,312,283,383,389,360,300,307,289,497,431,360,468,884,400,907,603,487,483,1937,1666,29994,29995,29995,29994,29997,29998,29998,29999]} 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 f6 7. Bb5 Be7 8. exf6 {C04: French Tarrasch: 3...Nc6} Bxf6 9. O-O O-O 10. Re1 {LiveBook: 3 Games. White is better.} (10. Bf4 Nb6 11. Bxc6 bxc6 12. Nc5 Nc4 13. b3 e5 14. Nxe5 Bxe5 15. Bxe5 Nxe5 16. dxe5 {½-½ (53) Nevednichy,V (2540)-Balog,I (2552) Hungary 2012}) 10... Qe7 $146 ({Predecessor:} 10... Ndb8 11. c3 Qd6 12. Qe2 Nd8 13. g3 b6 14. Bf4 Qe7 15. Bd3 g5 {0-1 (41) Karlsson,B (2271)-Thorarinsson,P (2252) Reykjavik 2016}) 11. Bf4 Nb6 12. Bxc6 bxc6 13. Nc5 Nc4 14. b3 {[%cal Bb2b3,Bb3b4,Bb4c5][%mdl 32]} Nd6 15. Qd2 Nb7 16. b4 Nxc5 (16... a5 $16 {might work better.}) 17. bxc5 $18 Rb8 18. Re3 {[%cal Be1e3,Be3a3,Ba3a7,Ba7c7][%mdl 32]} Qf7 19. Bg3 Rb5 20. Rae1 Rb2 21. Ra3 Qg6 22. Rxa7 Rxc2 23. Qe3 e5 (23... Qe4 $142 24. Ne5 (24. Rxc7 Rxa2 25. Rxc6 Bd7 $18) (24. Qxe4 dxe4 25. Ne5 Bxe5 $16) 24... Qxe3 25. fxe3 h5) 24. Nxe5 Bxe5 25. Qxe5 {And now h3 would win.} ({Less strong is} 25. dxe5 Qf7 $16) 25... Bf5 (25... Bd7 $142) 26. Rxc7 Be4 27. f3 Bf5 28. a4 h5 {intending ...h4.} 29. h4 Ra2 $2 (29... Kh7 30. a5 Ra2) 30. Ra7 Kh7 31. Kh2 Rf6 (31... Rf7 $142) 32. Re2 (32. Qb8 $142 Be6 33. Re5) 32... Ra1 (32... Rxe2 $142 33. Qxe2 Kg8) 33. Qc7 {[#] White wants to mate with Re7.} Be6 34. Qd8 Rxf3 (34... Bf7 $142 35. Rb7 Rd1) 35. gxf3 Qd3 {[#]} 36. Rxg7+ $1 {White mates.} Kxg7 37. Be5+ Kh7 38. Qh8+ Kg6 39. Qg7+ {Precision: White = 88%, Black = 38%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Vishnu, Prasanna. V"]
[Black "Apanasenok, Alexander"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2538"]
[BlackElo "2196"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,79,37,22,43,48,56,52,58,53,54,70,67,18,30,34,43,31,41,33,36,13,15,8,10,8,20,10,30,30,58,41,49,49,55,61,181,154,154,154,155,155,262,285,398,404,367,378,353,211,495,415,1813,1854,1518,1507,1779,1827,12812,5808,1693,1550]} 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O O-O 7. h3 c6 8. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Qc7 9. Re1 h6 10. a5 {C41: Philidor Defence} Re8 11. Ba2 {LiveBook: 7 Games} exd4 $146 ({Predecessor:} 11... Nf8 12. Qd3 Bd8 13. b4 Ng6 14. d5 a6 15. Be3 cxd5 16. Nxd5 Nxd5 17. Bxd5 {½-½ (69) Shytaj,L (2466)-Kobalia,M (2648) Tromsoe 2010}) 12. Nxd4 {White is slightly better.} Nc5 13. Bf4 Bf8 {[%cal Rc5e4]} 14. Qf3 Ne6 15. Bxe6 Bxe6 16. e5 Nd5 17. Nxe6 Rxe6 18. Nxd5 cxd5 19. Qxd5 {[#] aiming for exd6.} Rae8 20. Be3 Rxe5 21. Qd2 a6 22. Red1 Qc6 23. Ra3 Re4 24. Rb3 R8e6 25. Qd5 $36 {[%mdl 2048] Strongly threatening Qxc6. White fights for an advantage.} (25. Rb6 $5 {[%cal Rb6c6]} Qc7 26. Qc3 $14) 25... Qxc2 26. Rc1 {[%cal Bd1c1,Bc1c8,Bc8b8][%mdl 32]} Qe2 27. Rc8 Rxe3 (27... Rb4 $1 $14) 28. Rxe3 $18 ({Don't take} 28. fxe3 $6 Qe1+ 29. Kh2 Rf6 $14) 28... Rxe3 29. fxe3 Qxe3+ $14 {[%mdl 4096] Endgame KQR-KQB} 30. Kh1 Qe7 {[#]} (30... g6 $16 31. Qxd6 (31. Qxb7 Qe1+ 32. Kh2 Qe5+ 33. Kh1 Qe1+ 34. Kh2 Qe5+ 35. g3 d5 $11) 31... Qc1+ 32. Rxc1 Bxd6) 31. Rb8 $1 $18 Qc7 32. Rxb7 Qc1+ 33. Kh2 Qf4+ 34. Kg1 (34. g3 $142 Qf1 35. b4) 34... Qe3+ $2 (34... g6 35. Qf3 Qc4) 35. Kf1 Be7 (35... Qf4+ $142 36. Ke2 Qf6) 36. Rb8+ {White is clearly winning.} Bf8 37. Qxd6 Qc1+ 38. Kf2 Qxb2+ 39. Rxb2 {Intending Rb8 and mate.} Bxd6 40. Rb6 {Precision: White = 83%, Black = 28%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Bailet, Pierre"]
[Black "House, Glenn L"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2536"]
[BlackElo "2193"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,65,27,0,11,23,24,0,0,0,0,0,0,5,13,0,0,0,55,58,60,37,148,102,255,204,203,100,110,101,105,99,237,241,444,449,623,624,612,616,559,443,452,434,482,476,611,592]} 1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 Nf6 5. Nc3 d6 6. d4 cxd4 7. Nxd4 Bd7 8. O-O Be7 9. Nb3 a6 10. a4 O-O 11. g4 {LiveBook: 5 Games} h6 {B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack} (11... e5 12. h3 Nb4 13. Be3 Rc8 14. a5 Be6 15. Ra4 d5 16. Bb6 Qd6 17. Rxb4 Qxb4 18. exd5 Bd7 19. Re1 {½-½ (26) Predojevic,B (2600)-Bernasek,J (2506) Austria 2013}) 12. f4 b5 $146 ({Predecessor:} 12... Rc8 13. a5 Nb4 14. Be3 Qe8 15. Bf2 e5 16. f5 Bc6 17. Re1 Qd7 18. Bf3 Rfd8 19. Bb6 {½-½ (39) Arndt,S-Urlau,T GER email 2008}) 13. axb5 (13. e5 $5 dxe5 14. g5 hxg5 15. fxg5 $11) 13... Qb6+ {The position is equal.} 14. Kh1 axb5 15. Rxa8 Rxa8 {[#]} 16. e5 $1 {[%mdl 512]} Ne8 $1 (16... dxe5 17. g5) 17. f5 Rd8 18. f6 $36 {[%mdl 2048] White has good play.} Bf8 (18... gxf6 $11 19. exf6 Bxf6) 19. fxg7 $14 Bxg7 20. exd6 {Hoping for g5.} Bc8 (20... Ne5 $14) 21. Ne4 {Threatens to win with g5.} f5 $2 (21... Ne5 $16 {might work better.}) 22. gxf5 exf5 23. Ng3 (23. Qh5 $18 Ne5 24. Bxh6 fxe4 25. Bxg7 Nxg7 26. Qxe5 Qxd6 27. Qxe4) 23... Rxd6 $16 24. Qe2 Re6 25. Bd5 Nc7 (25... Nb4 $16 {was necessary.} 26. Bxe6+ Bxe6) 26. Bxe6+ $18 Nxe6 $2 (26... Bxe6 27. Nxf5 Bd5+ 28. Rf3 Kh7) 27. Nxf5 {White is clearly winning.} Ne5 28. Ne7+ Kh8 29. Nxc8 Qc6+ 30. Qg2 Qxc8 31. Qe4 Qc4 {[%cal Rc4f1]} 32. Re1 Qc8 {[#]} 33. Bxh6 $1 {Precision: White = 58%, Black = 26%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Dastan, Muhammed Batuhan"]
[Black "Garanin, Aleksei"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2529"]
[BlackElo "2192"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,83,24,45,43,52,46,6,0,0,56,56,77,41,40,-6,34,10,58,30,71,64,170,151,141,146,162,145,146,146,178,102,134,47,15,0,65,72,47,25,34,0,0,0,0,-79,-50,-55,0,-61,-66,-63,-72,-482,-479,-481,-457,-437,962,1160,1279,1158,1165,0,0,0,171,0,0,-47,1013,918]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h4 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} e5 7. Nb3 Be6 8. f4 {LiveBook: 10 Games. White has an edge.} Qc7 $146 ({Predecessor:} 8... Nc6 9. f5 Bxb3 10. axb3 d5 11. exd5 Nd4 12. Bd3 Nxd5 13. Bb5+ Nxb5 14. Nxd5 {½-½ (66) Naroditsky,D (2646)-Zherebukh,Y (2605) Saint Louis 2017}) 9. f5 Bc4 10. Nd2 Bxf1 11. Nxf1 Qc6 (11... Nbd7 $11) 12. Qf3 $14 b5 13. Ne3 Nbd7 14. Bd2 Nb6 15. a3 Rd8 16. O-O-O a5 17. Ncd5 Nfxd5 (17... b4 $14) 18. exd5 $18 Qa8 19. f6 gxf6 20. Qxf6 Rg8 21. Rhf1 {[%csl Gf1][%cal Rf6f7]} Rd7 22. Qf3 (22. Qf5 $18) 22... b4 $16 23. a4 ({Stronger than} 23. axb4 axb4 24. Bxb4 Bh6 $17) (23. b3 $16) 23... Nxa4 $14 24. g4 {[%cal Bg2g4,Bg4g5][%mdl 32]} Nc5 (24... Qa6 $11) 25. g5 b3 26. Ng4 (26. Qf5 $5 {[%cal Re3g4]} bxc2 27. Qxc2 $14) 26... Bg7 27. cxb3 a4 28. Bb4 axb3 29. Ba3 (29. Kd2 $11) 29... Qa4 (29... Qa6 $5 {[%cal Ra6c4]} 30. Kb1 e4 31. Nf6+ Bxf6 32. Qxf6 Qc4 $17) 30. Kb1 e4 ({Black should play} 30... Kd8 $15) 31. Nf6+ ({White should try} 31. Qf5 $1 $11) 31... Bxf6 $15 32. Qxf6 {aiming for Rd4.} Qc4 $1 {[%cal Rc4c2] White must now prevent ...Qc2+.} 33. Rf2 $2 {[%mdl 8192]} (33. Rc1 $17 Qd3+ 34. Ka1) 33... e3 $19 34. Rd4 Qa6 35. Rf1 Qe2 $4 {[%mdl 8192]} (35... Re7 $19 36. Re1 e2) 36. Rc1 $1 $18 {[%cal Rc1c5] White wants to mate with Rxc5.} Qf2 37. Rf4 Qd2 {[#]} 38. Rb4 $2 ({Only move:} 38. Re4+ $1 $18 {[%mdl 512]} Kf8 (38... Nxe4 39. Rc8+) 39. Rb4 Qxc1+ 40. Kxc1 Nd3+ 41. Kd1 Nxb4 42. Bxb4) 38... Rd8 $11 {And now ...e2 would win.} 39. Rd4 $40 {[%mdl 128] Black needs to defend precisely.} Qg2 $2 {[#]} (39... Rg6 $11 {and Black stays safe.} 40. Qf4 Qf2) 40. Bxc5 $2 (40. Qf5 $1 $18 Rg7 41. Bxc5 dxc5 {[#]} 42. d6 $1 {[%mdl 512]} (42. Rxc5 Kf8 $14)) 40... Rg6 $1 {[%cal Rg6f6]} 41. Qh8+ Ke7 $2 {[%mdl 8192]} (41... Kd7 $15 42. Qxh7 Qf3) 42. Qe5+ {Precision: White = 42%, Black = 43%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Travkina, Anastasia"]
[Black "Sasikiran, Krishnan"]
[Result "1/2-1/2"]
[ECO "B99"]
[WhiteElo "2265"]
[BlackElo "2688"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,109,81,31,39,21,9,14,25,0,0,-6,0,0,-11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-8,0,0,0,0,0,0,0,0,0,0,-13,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. f5 Bxg5+ 14. Kb1 Ne5 15. Qh5 Qd8 16. fxe6 {And now Nf3 would win.} g6 {B99: Sicilian Najdorf: 6 Bg5 e6 7 f4 Be7 8 Qf3 Qc7 9 0-0-0 Nbd7} 17. exf7+ $1 Kxf7 18. Qe2 Bg4 19. Qf2+ (19. Nc6 $5 Qc8 20. Nxe5+ dxe5 21. Qf2+ Kg7 22. Be2 $14) 19... Qf6 {The position is equal.} 20. Qxf6+ Bxf6 21. Be2 Bxe2 22. Ndxe2 Nc4 23. Nd4 Rhe8 24. Nd5 $146 {[#] Black must now prevent Rhf1.} ({Find the theoretical novelty and annotate with similar games:} 24. Rhe1) 24... Bxd4 25. Rxd4 Rxe4 26. Rxe4 Nd2+ 27. Kc1 Nxe4 $11 {[%mdl 4096] Endgame KRN-KRN} 28. Re1 Re8 29. Nc7 Re5 30. Nxa6 Ke6 31. Nc7+ Kf5 32. Re3 Rc5 33. Ne6 Kxe6 34. Rxe4+ {KR-KR} Kf5 35. Rd4 Ke5 36. c3 g5 37. Rg4 h6 (37... Kf5 $5 {[%cal Rf5g4]} 38. Rd4 Ke6 $11) 38. Kd2 d5 39. b3 Rc6 40. a4 bxa4 41. bxa4 Rc5 42. Kd3 Ra5 43. Rb4 h5 44. c4 dxc4+ 45. Rxc4 g4 46. Ke3 Rd5 47. Rb4 Rc5 48. Rb5 Rxb5 $1 49. axb5 {[%cal Ba4b5,Bb5b6][%mdl 32] KPP-KPP} h4 50. b6 {[#] White wants to mate with b7.} Kd6 51. Kf4 g3 $1 {[%cal Rg3h2]} 52. hxg3 hxg3 {...g2 is the strong threat.} 53. Kxg3 Kc6 54. Kf3 Kxb6 55. Ke4 {Precision: White = 89%, Black = 95%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Jacobs, Florian"]
[Black "Shirov, Alexei"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "2263"]
[BlackElo "2648"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,102,12,16,8,22,13,18,15,0,0,0,44,-34,-28,-26,1,0,0,0,0,0,0,0,0,0,27,8,8,7,31,0,47,26,47,47,47,47,45,54,65,31,35,0,0,0,0,0,0,-55,-39,-203,-203,-443,-472,-460,-369,-416,-414,-533,-529,-511,-298,-283,-270,-628,-621,-583,-472,-587,-583,-547,-515,-575,-547,-568,-541,-445,-149,-6103,-6102,-5269,-1702,-5529,-5419]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. Qb3 Qb6 6. Nc3 e6 7. Nh4 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4} Nbd7 8. h3 Bh5 9. g4 Bg6 10. Nxg6 hxg6 11. Bg2 {LiveBook: 92 Games} g5 12. O-O Be7 13. Rd1 Nf8 (13... Qc7 14. e4 Nxe4 15. Nxe4 dxe4 16. Bxe4 {1-0 (30) Carlsen,M (2855)-So,W (2770) Leuven 2016}) 14. Qc2 {[#]} dxc4 $146 ({Predecessor:} 14... Ng6 15. cxd5 exd5 {1-0 (35) Wang,H (2712)-Balogh,C (2657) Mamaia 2015}) 15. e4 e5 16. Be3 (16. dxe5 N6d7 $15) ({White should try} 16. d5 $14) 16... exd4 $1 $15 17. Bxd4 Qc7 18. e5 N6d7 19. Ne4 $1 $36 {[%cal Re4d6][%mdl 2048] Strongly threatening Nd6+! Black is under pressure.} Nxe5 20. Bxe5 Qxe5 {[#]} 21. Nd6+ $1 {[%mdl 512]} Bxd6 22. Re1 Ng6 23. Qxc4 O-O 24. Rxe5 Bxe5 25. Qb3 Rfd8 26. Re1 Bd4 27. Qxb7 Rab8 28. Qc7 Bb6 29. Qxc6 Nf4 30. Bf1 Rd2 31. Re8+ Rxe8 32. Qxe8+ Kh7 33. Qe1 ({But not} 33. Qxf7 $2 Rxf2 34. Qb7 (34. Qf5+ $2 Kh6 $19) 34... Rf3+ 35. Kh2 Rxf1 $19) 33... Rxb2 34. a4 (34. Qe4+ $11 Kh6 35. Bd3 Nxd3 36. Qxd3) 34... Rxf2 {( -> ...Re2+)} 35. Qxf2 $2 {[#]} ({White should play} 35. Qb1+ $15 Kh6 36. Kh1) 35... Kg6 $1 $19 ({Much less strong is} 35... Bxf2+ 36. Kxf2 Ne6 37. a5 $15) 36. Qxb6+ $2 (36. a5 {only move.} Bxf2+ 37. Kxf2) 36... axb6 {[%mdl 4096] Endgame KB-KN} 37. Kf2 Kf6 38. Ke3 Ke5 39. Bc4 f6 40. Bf1 Ne6 41. Bb5 Kd5 42. Kd2 $2 (42. Kf2) 42... Kd4 43. Kc2 Nc5 44. Kb2 Nd3+ 45. Kb3 {intending Bxd3.} Nf4 46. Bf1 Kc5 47. Kc3 g6 {[%cal Bg7g6,Bg6f5,Bf5g4][%mdl 32]} 48. Kb3 {[#]} f5 $2 (48... Kd4 $1 $19 49. Kb4 Nd5+ 50. Kb5 Nc3+ 51. Kb4 Nd5+ 52. Kb5 Nc3+ 53. Kb4 Nd5+) 49. gxf5 $2 {[%mdl 8192]} (49. Kc3 $17) 49... gxf5 {Black is clearly winning.} 50. Kc3 g4 51. hxg4 fxg4 {Precision: White = 29%, Black = 60%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Shailesh, Dravid"]
[Black "Smirin, Ilia"]
[Result "0-1"]
[ECO "B42"]
[WhiteElo "2254"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,74,12,68,64,57,33,39,33,40,0,14,19,40,-19,-19,-17,-6,-13,-10,-31,-37,-93,-57,-61,-65,-155,-154,-161,-153,-229,-227,-204,-212,-214,-209,-227,-137,-145,-143,-183,-193,-162,-184,-266,-262,-267,-260,-869,-860,-852,-750,-1765,-1608,-3271,-2885]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. O-O d6 8. Qe2 {B42: Sicilian: Kan Variation: 5 Bd3} (8. Qg4 g6 9. Qe2 Nd7 10. Nc3 Qc7 11. Be3 b6 12. a4 h5 13. f4 Ngf6 14. Bd4 O-O 15. f5 Ne5 16. fxg6 fxg6 17. h3 Nfd7 18. Rxf8+ Bxf8 19. Qe3 Bb7 20. Ne2 Re8 21. Nf4 Qd8 22. Nxg6 {1-0 (22) Nakamura,H (2789)-Markus,R (2662) Baku 2016}) 8... Nf6 9. c4 O-O 10. f4 Nc6 11. Nc3 b6 {LiveBook: 5 Games} (11... Nb4 $11) 12. Be3 $14 Bb7 13. Nd4 $146 (13. Rad1 $5 {[%cal Re4e5]}) ({Predecessor:} 13. Kh1 Re8 14. Bg1 Nd7 15. Rad1 {½-½ (55) Soskov,V (2289)-Ehlvest,J (2545) Viljandi 2015}) 13... Nxd4 14. Bxd4 Nd7 15. Be3 Rc8 16. Rac1 Bf6 17. Bd2 (17. Rfd1 $14) 17... Nc5 $11 18. Bb1 $1 Bd4+ 19. Kh1 f5 20. exf5 exf5 {[%cal Be6f5,Bf5e4][%mdl 32]} 21. Nd5 ({White should try} 21. Qd1 $15) 21... Re8 $36 {[%mdl 2048] Black fights for an advantage.} 22. Qf3 $1 Ne4 23. Bxe4 (23. Be3 $1 $15 Bxb2 24. Bxb6) 23... fxe4 $17 ({Don't do} 23... Rxe4 24. b3 $15) 24. Qe2 Bxb2 25. Rcd1 (25. Ne3 $17) 25... Bxd5 $1 $19 26. cxd5 Rc2 {aiming for ...e3!} 27. Qe3 Bf6 28. Rc1 Qc7 29. Qb3 Rc8 30. h3 {[#] Black must now prevent Rxc2.} Bb2 $1 {[%cal Rb2c1]} ({Inferior is} 30... Rxc1 31. Rxc1 Qd7 32. Rc6 $11) 31. Rxc2 Qxc2 32. Qxc2 (32. Qb4 {is a better defense.}) 32... Rxc2 {KRB-KRB} 33. Be3 b5 {[%cal Bb6b5,Bb5b4][%mdl 32]} 34. Rf2 $2 {[#]} (34. Kg1) 34... Rxf2 {Black is clearly winning.} 35. Bxf2 a5 36. Kg1 b4 37. Be1 Bc3 {Precision: White = 30%, Black = 79%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Mohota, Nisha"]
[Black "Onischuk, Vladimir"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "2251"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,72,45,37,33,22,12,22,6,52,-15,-21,-29,-29,-71,-55,-73,-60,-75,-64,-66,-59,-72,-65,-75,-37,-28,-17,-98,-130,-112,-105,-92,-95,-150,-113,-182,-179,-163,-183,-279,-286,-560,-452,-454,-452,-456,-451,-605,-605,-430,-415,-849,-811,-1740,-1223,-29994,-29995,-29995,-29996,-29996,-29997]} 1. Nf3 g6 2. e4 d6 3. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} Nf6 4. Nc3 Bg7 5. Be2 O-O 6. O-O a6 7. a4 Nc6 8. d5 {B08: Pirc Defence: Classical System} (8. h3 e5 9. dxe5 dxe5 10. Bg5 Be6 11. Be3 Qe7 12. Qc1 Rad8 13. Rd1 Rxd1+ 14. Bxd1 Rd8 15. a5 Qf8 16. Nd2 h6 {½-½ (42) Gustafsson,J (2626)-Wang,H (2690) Bangkok 2017}) 8... Nb4 9. a5 e6 $1 10. h3 {The position is equal.} c5 $146 ({Find the theoretical novelty and annotate with similar games:} 10... exd5 11. exd5 c5 12. dxc6 bxc6 13. Bf4 Nbd5 14. Nxd5 Nxd5 15. Bg5 Qd7 {1-0 (35) Yevseev,D (2529)-Klimov,S (2521) St Petersburg 2009}) 11. Ne1 (11. dxc6 $14 Nxc6 12. Bg5) 11... exd5 12. exd5 Re8 13. Bc4 Bd7 14. Bg5 h6 15. Bh4 g5 16. Bg3 Bf5 17. Bb3 Rc8 $36 {[%mdl 2048] Black has the initiative.} 18. Ra4 b5 19. axb6 $1 Qxb6 {Strongly threatening ...c4.} 20. Ra3 (20. Bc4 $1 $11 {keeps the balance.}) 20... c4 $17 21. Ba4 Re7 22. Nf3 Bg6 23. Bh2 (23. Qd2 $142) 23... Rc5 {[%cal Rb4d5]} 24. Bc6 (24. Nd2 $17) 24... Bxc2 $19 ({Not} 24... Nxc6 25. Bxd6 Rd7 26. Na4 $16) 25. Qd2 {[#]} Qb8 $1 26. Nd4 (26. h4 $142) 26... Bd3 27. Na4 $2 (27. Raa1 {keeps fighting.}) 27... Rxd5 28. Bxd5 Nfxd5 (28... Nbxd5 29. Nc6 $14) 29. Rxd3 cxd3 ({Weaker is} 29... Nxd3 30. Nc6 $17) 30. Nf5 Re2 31. Qc1 Qe8 32. Nxg7 (32. Qd1 $142) 32... Kxg7 33. Qd1 Qe4 {...Ne3 is the strong threat.} 34. Bxd6 {[#]} Ne3 $1 {[%csl Ge3][%cal Re4g2][%mdl 512] Black mates.} 35. f3 (35. fxe3 Qxg2#) 35... Rxg2+ 36. Kh1 Qe6 {Precision: White = 24%, Black = 84%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Dimitrova, Aleksandra"]
[Black "Ovsejevitsch, Sergei"]
[Result "1/2-1/2"]
[ECO "C73"]
[WhiteElo "2238"]
[BlackElo "2596"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,115,0,-23,-34,-30,-28,-32,-29,-37,-45,-23,-9,-21,-20,-67,-67,-60,-62,-55,-50,-55,-56,-66,-57,-55,-58,-66,-58,-79,-69,-96,-86,-147,-55,-57,-43,-49,-40,-39,-35,-41,-17,-42,-11,-33,-20,-29,0,0,0,0,9,0,13,5,41,10,10,0,16,7,7,10,23,8,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-19]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. Bxc6+ bxc6 6. d4 exd4 7. Nxd4 c5 8. Nc6 Qd7 {C73: Ruy Lopez: Deferred Steinitz: 5 Bxc6+} 9. Na5 $1 ({Not} 9. Qd5 $2 Nf6 $19) 9... Qa4 10. Qd5 $1 {[%cal Rd5a8]} Rb8 {Black is slightly better.} ({But not} 10... Qxa5+ $2 11. Bd2 $16) 11. Qc6+ $1 ({Wrong is} 11. Nc6 $2 Bb7 $19) 11... Qxc6 $1 12. Nxc6 Ra8 (12... Rb6 $5 {[%cal Rb6c6]} 13. Na5 g6 $11) (12... Rb6 13. Na5 f5 14. exf5 Bxf5 15. Nc4 Rb8 16. Ne3 {½-½ (35) Bartel,M (2608)-Kuljasevic,D (2546) Biel 2017}) 13. Na5 f5 14. exf5 $146 ({Find the theoretical novelty and annotate with similar games:} 14. f3 fxe4 15. fxe4 Be6 16. Nc3 {0-1 (53) Bohosjan,S-Ivkov,B Caorle 1972}) 14... Bxf5 15. c4 g6 16. Bd2 {[#] Strongly threatening Bc3.} Nf6 {[%cal Bg8f6,Bf6h5,Bh5g7,Bg7e6][%mdl 32]} 17. Bc3 Kf7 18. O-O Bh6 19. Nd2 Rhe8 20. Rfe1 Nh5 {Threatens to win with ...Nf4.} 21. g3 Ng7 22. a3 Ne6 23. Nc6 {[#]} (23. Nf3 $142) 23... Bc2 (23... Nd4 $1 $17 {[%mdl 512]} 24. Bxd4 Bxd2) 24. Nf3 $15 Ba4 25. Na5 Bf8 26. b3 Bd7 27. Rad1 Re7 28. Re3 h6 29. Red3 Be8 30. h4 Ng7 31. Bd2 Nh5 32. b4 cxb4 33. axb4 Nf6 34. Nd4 Kg8 35. f3 Bf7 36. Ndc6 Ree8 37. Re3 Nd7 38. Rde1 Nb6 39. Rxe8 Bxe8 {The position is equal.} 40. Ne7+ Kh7 41. Nd5 Nxd5 42. cxd5 Bf7 43. Rc1 Rc8 44. Nc4 Rb8 45. Ne3 Rb7 46. Rc6 Bg7 47. Rxa6 Bd4 48. Ra5 Bb6 49. Ra6 Bxe3+ 50. Bxe3 Bxd5 $11 {[%mdl 4096] Endgame KRB-KRB} 51. Ra7 Bxf3 52. Kf2 Bh1 (52... Bc6 {with more complications.} 53. Rxb7 Bxb7 54. Ba7 c6 55. Be3 Kg7) 53. Rxb7 Bxb7 54. Ba7 c6 55. Bb8 d5 56. Ke3 Kg7 57. Kd4 Ba6 58. Bc7 {Precision: White = 62%, Black = 55%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Tarasova, Viktoriya"]
[Black "Kovchan, Alexander"]
[Result "0-1"]
[ECO "D79"]
[WhiteElo "2235"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,66,33,8,6,6,4,16,15,17,10,10,23,23,20,0,0,-6,0,-14,-16,-15,-18,-15,-22,-73,-64,-79,-71,-77,-71,-106,-112,-108,-94,-104,-108,-496,-496,-468,-469,-748,-747,-716,-705]} 1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. cxd5 cxd5 6. Nf3 Bg7 7. O-O O-O 8. Nc3 e6 9. Bf4 Nc6 10. Ne5 Nd7 11. Nxc6 bxc6 12. Na4 Ba6 13. Rc1 Bb5 {D79: Fianchetto Grünfeld: Symmetrical Variation (6 0-0 c6 7 cxd5 cxd5)} (13... Qa5 14. Re1 Bb5 15. Nc3 Rfc8 16. b3 Qb4 17. Nxb5 Qxb5 18. e4 a5 19. Bd6 Qb6 20. e5 c5 21. dxc5 Nxc5 {½-½ (88) Garcia,J (2395)-Gupta,A (2633) Olongapo City 2015}) 14. Nc3 Qb6 15. Nxb5 Qxb5 {The position is equal.} 16. b3 $146 ({Predecessor:} 16. Qd2 Rfc8 17. Rfd1 c5 18. dxc5 Rxc5 19. Rxc5 Nxc5 20. b3 a5 21. Rc1 {0-1 (59) Szollosi,L (2255)-Schrancz,I (2315) Budapest 1981}) 16... Rfc8 17. Qd2 a5 18. Rc2 a4 19. Rb1 axb3 20. Rxb3 Qa4 21. Rb7 c5 22. dxc5 Nxc5 {[%cal Bd7c5,Bc5a4,Ba4c3][%mdl 32]} 23. Rb4 Qa6 24. Be3 (24. Rb1 $11 {keeps the balance.}) 24... Na4 $17 25. Bd4 {aiming for Rxc8+.} Rxc2 26. Qxc2 Qa5 27. a3 Bxd4 28. Rxd4 Qe1+ 29. Bf1 Nc3 $36 {[%mdl 2048] Black is on the roll.} 30. a4 $2 {[%mdl 8192] [#]} (30. e3 $17 {is a better chance.}) 30... Rb8 $1 $19 {[%cal Rb8b1] Black is clearly winning.} 31. Qd2 Qa1 32. Kg2 (32. Qd3 $142 Nxe2+ 33. Qxe2 Qxd4 34. a5) 32... Rb1 33. Qf4 {[#]} Ne4 $1 {Precision: White = 33%, Black = 90%.} ({Stronger than} 33... Rxf1 34. Qb8+ Kg7 35. Qe5+ f6 36. Qc7+ Kf8 37. Qd8+ Kf7 38. Qd7+ Kf8 39. Qd8+ Kf7 40. Qd7+ Kf8 41. Qd8+ $11) 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Krustkalns, Kristaps"]
[Black "Stocek, Jiri"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "2226"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,70,11,33,40,29,26,31,29,39,37,33,0,17,17,17,19,13,19,25,46,33,-14,25,-20,-18,-29,-16,-68,-50,-39,40,-31,0,0,50,-19,44,42,82,24,23,16,34,26,31,0,45,-21,-49,-39,-39,-41,-45,-70,-6,-12,-9,-848,-831,-833,-807,-679,-610]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 Bc5 (5... Nc6 $5 {[%cal Rc6d4]} 6. Be3 e5 7. Nxc6 dxc6 $11) 6. Nb3 {Strongly threatening e5. B40: Sicilian: 2...e6, Unusual lines} Be7 7. Nc3 (7. e5 $5 {[%cal Re5f6]} Nd5 8. c4 $14) 7... Nc6 8. f4 {White is slightly better.} d5 $146 ({Predecessor:} 8... d6 9. Qf3 Nb4 10. O-O Nxd3 11. cxd3 O-O 12. d4 Bd7 {1-0 (48) Paljusaj,E (2309)-Katavic,B (2221) Sibenik 2010}) 9. e5 Nd7 10. Qf3 Nc5 11. Nxc5 Bxc5 12. Bd2 Bd7 13. O-O-O Nd4 14. Qg3 g6 15. Ne2 Nc6 16. Qf3 Qb6 17. Kb1 a5 18. c4 (18. g4 $11) 18... Ne7 19. Nc3 {[%cal Rc4d5]} Bd4 (19... Bc6 $15) 20. Qe2 (20. Nb5 $14 Bxb5 21. cxb5) 20... a4 21. a3 Bc5 22. Ka1 (22. cxd5 $14 Nxd5 23. Nb5) 22... Bd4 (22... dxc4 $11 23. Bxc4 Bc6) 23. Be1 Bc6 {[#]} 24. cxd5 (24. Nb5 $1 $16) 24... Nxd5 $11 25. Nxd5 Bxd5 26. Bb4 Bc5 27. Bb5+ Ke7 {[%cal Be8e7,Be7d7,Bd7c6][%mdl 32] Threatens to win with ...Bxb4.} (27... Kf8 $5 {[%cal Rc5b4]}) 28. Qf2 (28. Rxd5 $14 exd5 29. Bxc5+ Qxc5 {[#]} 30. f5 $1 {[%mdl 512]}) 28... Rhc8 $1 29. Rc1 {[%cal Rc1c5]} Qxb5 30. Bxc5+ Kd7 $1 31. Bb4 {Qh4 is the strong threat.} Rc4 (31... Rxc1+ $1 $15 32. Rxc1 Rc8 33. Rxc8 Kxc8) 32. Qh4 {And now Qe7+ would win.} Rxb4 $40 {[%mdl 128] Black attacks.} 33. Qf6 $2 {[%mdl 8192]} (33. axb4 $11 a3 34. b3 Qxb4 35. Qe1 (35. Rhd1 Qxb3 36. Rd2 Rc8 $11) 35... Qxb3 36. Qd2) 33... Rc4 $19 {Black is clearly winning.} 34. Qxf7+ Kc6 $1 35. Qe7 Qc5 {Precision: White = 36%, Black = 39%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Pulkkinen, Kari"]
[Black "Braun, Arik"]
[Result "0-1"]
[ECO "B47"]
[WhiteElo "2218"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,86,24,0,8,0,6,0,0,0,44,51,28,25,117,0,11,0,0,-10,-1,-15,0,-45,-52,-58,-65,-50,-63,-58,-66,-64,-51,-58,-52,-106,-87,-108,-93,-132,-123,-150,-153,-148,-134,-129,-130,-185,-172,-208,-204,-230,-244,-236,-227,-222,-186,-250,-247,-252,-241,-246,-226,-609,-610,-6882,-6494,-5293,-5293,-29990,-29991]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 Nf6 7. Be3 Be7 8. O-O O-O 9. f4 d6 10. Qe1 Nxd4 {B83: Sicilian Scheveningen: 6 Be2, lines without ...a6} 11. Bxd4 e5 12. fxe5 dxe5 {The position is equal.} 13. Qg3 Re8 (13... Bc5 14. Bxc5 Qxc5+ 15. Kh1 Kh8 16. Rxf6 gxf6 17. Qh4 Rg8 18. Qxf6+ {½-½ (18) Palac,M (2568)-Saric,I (2654) Zadar 2015}) 14. Kh1 Bd8 $1 15. Be3 {Strongly threatening Bh6.} Be6 (15... Kh8 $1 $11) 16. Rad1 (16. Bh6 $1 $16 {[%csl Gh6][%cal Rg3g7]} g6 17. Bb5) 16... Kh8 $1 $11 {[#]} 17. Bb5 $146 ({Predecessor:} 17. Bg5 Ng8 18. Bc1 Nf6 19. Bg5 {1-0 (40) Chandler,M (2520)-Teplitsky,Y (2453) Bermuda 1999}) 17... Rf8 $1 18. Bd3 a6 19. a4 Be7 20. Bg5 (20. a5 $5) 20... Nh5 21. Qh4 Bxg5 22. Qxh5 Be7 23. Rf3 g6 24. Qh6 Rg8 25. Rdf1 Rg7 26. g4 ({White should play} 26. Nd1 $15) 26... Qd8 27. Qe3 Bg5 28. Qc5 Bf4 ({But not} 28... Bxg4 $6 29. Rxf7 Bf4 30. Rxg7 $11) 29. Rxf4 exf4 30. Rxf4 Rc8 31. Qe5 h6 $36 {[%mdl 2048] Black is really pushing.} 32. Nd5 {[#]} (32. h3 $17 {keeps fighting.}) 32... Qg5 $1 $19 {[%cal Rg5e5]} 33. Qd4 {[#]} Rd8 $1 34. Qf2 Bxd5 ({Weaker is} 34... Bxg4 35. h4 $16) 35. exd5 Qxd5+ 36. Kg1 f5 37. Qh4 (37. h3 $142) 37... Kh7 {...g5 is the strong threat.} 38. Qf2 Re8 39. h4 Kh8 40. h5 $2 (40. Qd4 Qa5 41. Kg2) 40... gxh5 41. Rxf5 Rxg4+ 42. Kh2 Qd6+ 43. Kh3 Reg8 {Precision: White = 28%, Black = 76%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Ratsma, Midas"]
[Black "Alekseenko, Kirill"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "2217"]
[BlackElo "2575"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,82,0,-8,3,12,9,-18,-23,-18,-8,-15,-11,-17,-13,-26,-24,-23,-9,-14,-18,-29,8,0,0,-28,-17,-17,-17,-22,-21,-25,-15,-30,-31,-64,-64,-77,-46,-39,-47,-40,-35,-87,-91,-181,-185,-203,-189,-244,-230,-191,-185,-328,-316,-440,-422,-441,-422,-531,-514,-725,-526,-977,-983,-5814,-5718,-2657,-2594]} 1. e4 c5 2. Nf3 Nc6 3. c3 Nf6 4. d3 d5 5. Nbd2 e6 6. g3 Be7 7. Bg2 O-O 8. O-O b6 9. Re1 {LiveBook: 6 Games} a5 {C00: French: Unusual White 2nd moves} 10. exd5 exd5 11. Ne5 $146 ({Predecessor:} 11. Nf1 Be6 12. h3 h6 13. Be3 Qd7 14. Kh2 d4 15. cxd4 cxd4 16. Bf4 Rac8 17. a3 {1-0 (36) Petran,P (2342)-Zwettler,M (2218) Austria 2006}) 11... Nxe5 {The position is equal.} 12. Rxe5 Ra7 13. Re1 Bd6 14. Nf1 h6 15. Ne3 Re7 16. d4 Rfe8 17. Bd2 Bc7 18. Qb3 {[%cal Re3d5]} c4 19. Qc2 b5 20. Nf5 Re6 21. Rxe6 Bxe6 22. Re1 Qd7 23. Ne3 Bd6 24. f4 {[#] aiming for f5.} Qc6 25. Nf5 Bf8 26. Nh4 Rb8 {[%cal Be8b8,Bb8b6,Bb6b3][%mdl 32]} 27. f5 Bd7 28. Bf4 Rb6 29. h3 ({White should try} 29. Be5 $15) 29... b4 $17 30. g4 {[#]} (30. Nf3 $17) 30... Qb7 $1 $19 31. cxb4 axb4 ({Don't play} 31... Rxb4 32. Re2 $17) 32. Nf3 (32. b3 $142 c3 33. Bf1) 32... b3 33. axb3 Rxb3 34. Re2 (34. Bc1 {was worth a try.}) 34... Ba4 35. Ne5 Qa7 {Black is clearly winning.} 36. Qc1 Qxd4+ 37. Kh2 Bd6 38. Kh1 Bb5 39. Re1 Ne4 {[%cal Bf6e4,Be4f2,Bf2h3][%mdl 32]} 40. Nf3 Nf2+ 41. Kg1 Nxh3+ {Precision: White = 33%, Black = 72%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Petrov, Dmitri"]
[Black "Brunello, Sabino"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "2215"]
[BlackElo "2566"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,118,0,9,-43,-5,-20,-13,-31,15,15,20,17,22,18,26,20,12,0,0,0,0,-16,-16,-14,-16,-68,-68,-67,-66,-66,-65,-81,-81,-80,-71,-85,-80,-81,-80,-85,-80,-78,-68,-77,-68,-68,-68,-68,-68,-68,-68,-68,-66,-73,-66,-66,-67,-70,-70,-88,-83,-108,-100,-121,-74,-90,0,-121,-120,-120,-118,-116,-101,-205,-207,-183,-185,-227,-223,-216,-143,-141,-131,-494,-95,-322,-322,-293,-290,-289,-289,-287,-287,-6065,-5949,-5007,-4718]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 O-O 8. O-O d5 9. exd5 cxd5 10. h3 {C47: Scotch Four Knights and Four Knights with 4 g3} c6 11. Qf3 h6 (11... Re8 12. Bf4 Qe7 13. a3 Bd6 14. Ne2 c5 15. b3 Be6 16. Bxd6 Qxd6 17. Rad1 Qe7 {1-0 (58) Bacrot,E (2696)-Fressinet,L (2668) Balagna 2017}) 12. Ne2 Re8 {LiveBook: 3 Games} 13. Nd4 (13. Bf4 $11) 13... Bd7 14. Bf4 $146 ({Predecessor:} 14. Nf5 Bf8 15. c4 Ne4 16. cxd5 cxd5 17. Rd1 Qc8 {1-0 (43) Haldorsen,B (2356)-Gandrud,V (2330) Stavanger 2017}) 14... c5 15. c3 Bxc3 (15... Ba5 $5 {[%cal Rc5d4]} 16. Nf5 c4 $15) 16. bxc3 {[#] Hoping for Nf5.} cxd4 17. cxd4 Ne4 18. Rfe1 {[%cal Rd3e4]} Qf6 19. Bxe4 dxe4 20. Rxe4 Bc6 21. Rxe8+ Rxe8 22. Qg3 Qxd4 23. Rc1 Re6 24. Be3 (24. Be5 $11 Qxe5 25. Qxe5 Rxe5 26. Rxc6) 24... Qd5 $1 $36 {[%mdl 2048] And now ...Rg6 would win. White is under pressure.} 25. Qf3 Qxf3 26. gxf3 {[%mdl 4096] Endgame KRB-KRB} a6 27. h4 Bxf3 28. Rc4 Kh7 29. Rb4 Re5 30. Ra4 Be2 31. Kg2 Kg6 32. Kg3 Kh5 33. a3 Re6 34. Ra5+ Kg6 35. Rd5 Re4 36. Rd4 Re5 37. Bd2 Rf5 38. Be3 Rf3+ 39. Kg2 {Threatening Rd2.} Rf6 40. Kg3 Rc6 41. a4 Rc3 42. Rb4 Ra3 43. Rd4 Ra1 44. Bd2 Ra3+ 45. Be3 $1 f6 46. Kg2 Kh5 47. Bc1 Rb3 48. Rd7 (48. Rf4 $17 {is a better defense.}) 48... Bf3+ $19 (48... Kxh4 49. Rxg7 Bf3+ 50. Kh2 $17) 49. Kh2 Rb1 ({But not} 49... Kxh4 50. Rxg7 Bb7 51. Rg3 $17) 50. Kg3 Bc6 ({Resist} 50... Rxc1 51. Kxf3 Rc3+ 52. Ke2) 51. Rd1 Bxa4 52. Rd5+ g5 53. hxg5 $2 {[%mdl 8192]} (53. Rc5 $17) 53... hxg5 $2 (53... Rxc1 $19 {and Black stays clearly on top.} 54. gxf6+ Kg6) 54. Bd2 $2 (54. Rc5 $17) 54... Bc6 55. Rc5 Rg1+ 56. Kh3 Bf3 57. Be3 Kg6 58. Ra5 $2 (58. Rc1 Rg4 59. Kh2) 58... g4+ {[%cal Bg5g4,Bg4g3][%mdl 32]} 59. Kh4 {[#]} g3 $1 {Precision: White = 34%, Black = 65%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Gireman, Ja"]
[Black "Kunin, Vitaly"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2208"]
[BlackElo "2551"]
[Annotator "TA"]
[PlyCount "164"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,164,-33,-26,-27,-11,-35,-22,-34,-42,-87,-58,-149,-137,-139,-102,-87,-93,-118,-108,-122,-106,-126,-10,-27,-16,-18,-19,-31,-3,-6,-1,-7,-1,-1,-1,-1,-1,-3,0,0,0,0,0,-2,-2,-5,-8,-19,-22,-34,-29,-37,-29,-33,-29,-29,-30,-30,-22,-22,-22,-34,-23,-52,-52,-52,-52,-65,-61,-61,-61,-95,-52,-65,-27,-52,-24,-58,-37,-52,-54,-100,-95,-101,-97,-142,-142,-139,-95,-95,0,-135,-88,-83,-77,-78,-68,-131,-131,-124,-71,-71,-76,-80,-80,-73,-75,-76,-60,-75,-71,-100,-100,-100,-100,-100,-100,-100,-100,-100,-100,-106,-100,-100,-108,-108,-100,-156,-145,-1707,-1543,-2121,-1827,-1746,-1600,-2620,-2006,-1657,-1522,-12837,-12838,-12838,-12839,-12842,-12843,-12845,-12844,-29988,-29989]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. g4 (5. Bc4 Be7 6. O-O O-O 7. a4 a5 8. Re1 c6 9. Ba2 Re8 10. h3 Bf8 11. Be3 h6 12. Nh4 exd4 13. Bxd4 Nc5 14. Bxc5 dxc5 15. e5 Qxd1 16. Raxd1 Nh5 17. Ng6 Be6 18. Nxf8 Kxf8 19. Bxe6 Rxe6 {1-0 (38) Vachier Lagrave,M (2783)-Ivanchuk,V (2757) Leuven 2017}) 5... Nxg4 6. Rg1 {C41: Philidor Defence} Ngf6 7. dxe5 dxe5 8. Bc4 h6 9. Be3 c6 {LiveBook: 54 Games} 10. a4 $146 ({Predecessor:} 10. Qe2 b5 11. Bb3 Qa5 12. O-O-O Ba6 {½-½ (24) Dobrowolski,P (2421)-Butkiewicz,L (2460) Teplice 2017}) 10... Qc7 11. Qe2 Nb6 12. Bb3 $1 Bg4 13. O-O-O Bh5 14. Bxb6 (14. Rg3 $15) 14... axb6 $17 ({Don't do} 14... Qxb6 15. Kb1 $17) 15. Qc4 Bd6 ({Avoid the trap} 15... Bxf3 $2 16. Nb5 $1 $18 {[%mdl 512]}) 16. Rxg7 O-O-O 17. Rd3 Rhg8 18. Rxg8 Rxg8 19. Kb1 Kb8 (19... Rg2 $17 20. h3 Rxf2) 20. Nh4 $1 $11 Bc5 21. f3 Ne8 {And now ...Nd6 would win.} 22. Nf5 Nd6 23. Nxd6 Bxd6 24. Ne2 $1 Rg2 25. Ng3 Rxh2 26. Nxh5 Rxh5 27. Rd1 Bc5 28. Qxf7 Qxf7 29. Bxf7 {[%mdl 4096] Endgame KRB-KRB} Rh3 30. Be6 Rxf3 31. Bf5 Be7 32. Rh1 (32. Rd7 $5 {[%cal Rd7e7]} Bg5 33. Rh7 $11) 32... Bg5 33. Bg4 Rf7 (33... Re3 {keeps more tension.} 34. Bf5 Re2 35. c3 Ka7 36. Rd1 Bd2) 34. Bf5 Rg7 35. Rd1 Kc7 36. c3 Bf4 37. Be6 b5 38. axb5 cxb5 39. Bf5 Kc6 40. Be6 h5 41. Bf5 h4 42. Rd3 Rg1+ (42... b4 $5 43. Kc2 Rg2+ 44. Kb3 bxc3 45. Rxc3+ Kb5 46. Bd7+ Ka5 47. Rc5+ Ka6 $17) 43. Kc2 Rg2+ 44. Kb1 Rg7 45. Rd1 Bg3 46. Kc2 Bf2 47. Rd3 Bc5 (47... b4 $5) 48. Rd2 b4 49. cxb4 Bxb4 50. Rh2 Be1 51. Re2 {[#]} Rg1 $1 52. Re3 Rg2+ 53. Kb1 Rg1 54. Kc2 b6 55. Rd3 Bf2 56. Bd7+ Kc7 57. Bh3 ({Better is} 57. b4 $15) 57... Bd4 $17 58. b3 Re1 (58... Kc6 $142 59. Rd1 Rg3) 59. Bf5 Ra1 60. Rh3 Bf2 61. Rd3 Ra2+ 62. Kd1 Ra8 63. Rd7+ Kc6 64. Rd3 Bd4 65. Rh3 Rh8 66. Ke2 Kc5 67. Be6 Kb4 68. Bd5 Bc5 69. Be6 Be7 70. Bd5 Bg5 71. Kf3 Bf4 72. Ke2 (72. Kg4 $142) 72... Bg3 73. Rh1 $2 {[%mdl 8192] [#]} (73. Be6 $17) 73... h3 $1 $19 {[%cal Bh4h3,Bh3h2][%mdl 32]} 74. Be6 h2 75. Kf1 Rh6 76. Bd5 Bf4 77. Kg2 Rg6+ 78. Kf1 Kc3 79. Bf7 Rg7 80. Be6 Kd3 81. Bd5 Ke3 82. b4 Kf3 {Precision: White = 47%, Black = 57%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Gueci, Tea"]
[Black "Sanal, Vahap"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "2200"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "142"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,142,23,61,54,66,64,88,56,65,57,60,58,60,53,51,56,121,71,131,146,124,100,128,57,136,121,187,192,176,57,105,85,106,115,155,47,107,119,116,104,145,53,37,-76,-76,-76,-76,-76,-72,-89,-76,-61,-63,-81,-90,-121,-90,-90,-90,-90,-90,-141,-25,-90,-11,-69,-69,-73,-62,-71,-69,-90,-90,-90,-90,-90,-90,-90,-90,-90,-90,-83,-76,-82,-76,-129,-102,-102,-102,-139,-128,-198,-203,-242,-102,-102,-102,-102,-102,-102,-102,-127,0,-185,-135,-188,-95,-110,-102,-106,-62,-88,-71,-64,-65,-78,-66,-336,-343,-29978,-29956]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 b5 6. Bb3 Be7 7. c3 O-O 8. O-O d6 9. Rd1 Na5 10. Bc2 c5 11. d4 Qc7 12. d5 c4 13. b4 {C86: Closed Ruy Lopez: Worrall Attack} (13. h3 Re8 14. Nbd2 Bf8 15. Nf1 g6 16. Bd2 Nb7 17. b4 cxb3 18. axb3 Nc5 19. b4 Ncd7 20. Bd3 Nb6 {1-0 (46) Barbosa,E (2496)-Bachmann,A (2628) Florianopolis 2017}) 13... cxb3 14. axb3 Nb7 15. Bd2 {[%cal Bc1d2,Bd2c3,Bc3b4][%mdl 32] White is better.} Bd7 16. Na3 Nc5 $146 ({Predecessor:} 16... Rfb8 17. b4 Be8 18. Bd3 Nd7 19. c4 bxc4 20. Nxc4 a5 21. bxa5 {1-0 (48) Tabatabaei,M (2200)-Pooreraghian,M (2076) Tabriz 2013}) 17. b4 Na4 18. Bxa4 bxa4 19. c4 g6 (19... Rfc8 $14) 20. Bc3 a5 (20... Bg4 $142) 21. bxa5 $16 Rfb8 22. Rdb1 Qc5 23. Nc2 (23. Ne1 $16) 23... Rc8 (23... Bd8 $14) 24. Nd2 Bd8 (24... Rxa5 $16 25. Bxa5 Qxa5) 25. Bb4 $18 Qc7 26. Ne1 (26. Na3 $18) 26... Be8 27. Nd3 Qe7 28. a6 Qc7 29. Rc1 (29. c5 $16) 29... Rxa6 (29... Qb6 $1 $14) 30. c5 $16 Bb5 31. Qf3 Qb8 32. cxd6 (32. c6 $16) 32... Rxc1+ 33. Rxc1 (33. Nxc1 $14 {is the one way to stay ahead.} Nd7 34. Na2) 33... Bxd3 $1 $17 34. Qxd3 Qxb4 35. Qxa6 {Threatens to win with Nc4.} Qxd2 36. Rf1 Qb4 ({Don't play} 36... Nxe4 $6 37. Qxa4 Nf6 38. Qa8 $11) 37. Qa8 Qxd6 {Hoping for ...a3.} 38. Qxa4 Bb6 39. h3 Qc5 40. Kh2 Kg7 41. f3 h5 42. Qa1 (42. h4 $142) 42... Ba5 (42... h4 $1 $17 43. Qe1 Qd4) 43. Qc1 (43. Kh1 $11) 43... Qa7 (43... Qb5 $17) 44. h4 (44. Qa1 $11) 44... Bb6 $15 45. Qa1 Qd7 46. Qa6 Be3 47. g3 Qc7 48. Qe2 Bd4 49. Qd2 Qb6 50. Qc2 Nd7 51. Rb1 Qa6 52. Rd1 Nb6 53. Qd3 Qa4 54. Qe2 (54. Rc1 $142) 54... Nc4 $17 55. Rc1 Ne3 56. Rb1 Qa3 57. Qd2 Qa6 58. Kh3 Qc8+ (58... Qf6 $1 $19 {[%cal Rf6f3] is more deadly.} 59. Qe2 Nxd5 $1 {[%mdl 512]}) 59. Kh2 Qc4 60. Kh3 Qa6 61. Re1 Qa7 62. Qd3 Qc5 {[#]} ({Black should try} 62... Qa2 $17 {[%csl Ge3][%cal Ra2g2]} 63. Qe2 (63. Rxe3 $2 Qf2 $19) 63... Qa3) 63. Qe2 $2 (63. d6 $1 $11 {[%mdl 512] and White stays safe.}) 63... Qc3 64. Rb1 (64. Kh2 $17) 64... Nc4 ({Black should play} 64... Qc8+ $19 65. Kh2 f5 66. exf5 gxf5) 65. Rd1 Nb2 66. Rb1 Qa3 67. Rc1 Na4 $36 {[%mdl 2048] Black is on the roll.} 68. Rf1 Nc3 69. Qc2 Nb5 70. Rb1 $2 {[%mdl 8192]} ({Better is} 70. Qe2 $15 Nd6 71. Kh2) 70... Qxf3 $19 {White must now prevent ...Bf2.} 71. Rxb5 $2 (71. Qd1 $19 Qxd1 72. Rxd1) 71... Bf2 {Precision: White = 38%, Black = 52%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Ivanova, Karina"]
[Black "Zakhartsov, Viacheslav V"]
[Result "0-1"]
[ECO "A43"]
[WhiteElo "2197"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,70,19,28,-7,0,0,9,-30,-22,-30,-27,-34,-16,-14,-10,-8,-12,-1,0,0,0,0,0,0,0,0,10,-17,0,0,22,-21,-20,-14,-24,-35,-17,-22,-20,-102,-45,-46,-35,-41,-20,-35,-24,-360,-318,-241,-238,-6387,-6905,-29983,-29984]} 1. d4 Nf6 2. Nf3 c5 3. d5 g6 4. Nc3 Bg7 5. e4 O-O 6. Be2 b5 7. e5 Ng4 {A43: Schmid Benoni} 8. Nxb5 Nxe5 9. Nxe5 Bxe5 {LiveBook: 4 Games. The position is equal.} 10. f4 $146 ({Predecessor:} 10. O-O d6 11. Na3 Ba6 12. Bxa6 Nxa6 13. Nc4 Bg7 14. Re1 Re8 15. Bg5 {½-½ (37) Torre,E (2494)-Yermolinsky,A (2478) Tekirdag 2016}) 10... Bg7 11. d6 Nc6 (11... a6 {feels hotter.} 12. Na3 exd6 13. c3 Bb7 14. O-O Bc6) 12. O-O Nd4 13. Nxd4 Bxd4+ 14. Kh1 Bb7 15. c3 Bg7 16. Be3 exd6 17. Qxd6 Re8 18. Bf3 Bxf3 19. Rxf3 Qb6 20. Qd2 {[#]} d5 $1 {[%mdl 512]} 21. f5 (21. Qxd5 Qxb2) 21... Qd6 22. fxg6 hxg6 23. Raf1 f5 24. Bh6 (24. Bf4 $5 {[%cal Rf4d6]} Qe6 25. Bh6 $11) 24... Re4 25. Bxg7 Kxg7 26. Rh3 {Hoping for Qh6+.} Rh8 27. Rxh8 Kxh8 $40 {[%mdl 4224] Endgame KQR-KQR. Black attacks.} 28. Qg5 (28. Kg1 $11) 28... Kg7 ({Black should try} 28... d4 $17 {...d3 is the strong threat.} 29. Kg1 d3) 29. Kg1 $15 Qe5 30. h4 d4 {Threatens to win with ...Rg4.} 31. h5 $1 Rg4 32. h6+ $2 {[%mdl 8192]} (32. Qd8 $11 {and White stays safe.}) 32... Kh7 $19 33. Qd2 Rh4 34. Rf3 $2 {[#]} (34. Kf2) 34... Qh2+ $1 35. Kf2 Rg4 {Precision: White = 34%, Black = 59%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Mierins, Eriks"]
[Black "Zeng, Chongsheng"]
[Result "0-1"]
[ECO "B44"]
[WhiteElo "2196"]
[BlackElo "2537"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,64,10,-56,-46,-147,-145,-172,-106,-141,-143,-139,-138,-191,-135,-149,-147,-141,-164,-174,-153,-168,-132,-131,-112,-114,-121,-122,-137,-204,-206,-226,-226,-247,-267,-266,-259,-595,-568,-1578,-1589,-1554,-1544,-1501,-1354,-1282,-1235,-29984,-29985,-29985,-29986,-29993,-29994]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 Bb4 7. Nxc6 bxc6 8. e5 (8. Bd3 $11) 8... Ne4 $1 $15 {[%cal Re4c3] B44: Sicilian: Taimanov: 5 Nb5} 9. Qd4 (9. Bd2 $15 Bxc3 10. Bxc3) (9. Qg4 Nxc3 10. Bd2 Qa5 11. Qxg7 Rf8 12. bxc3 Bxc3 13. Rd1 Rb8 14. Bd3 Rb2 15. Bxc3 Qxc3+ 16. Kf1 Rd2 {0-1 (16) Norri,J (2356)-Agopov,M (2431) Helsinki 2014}) 9... Qa5 $17 {[%cal Re4c3]} 10. a3 {[#]} Nxc3 (10... Nxf2 $1 $19 {[%mdl 512]} 11. Qxf2 (11. Kxf2 $2 Bc5 $19) 11... Bxc3+ 12. Kd1 Bxe5) 11. axb4 Qxa1 12. Qxc3 {[#]} a5 $1 13. bxa5 $146 (13. Bd3 $17) ({Find the theoretical novelty and annotate with similar games:} 13. b5 cxb5 14. Bd3 bxc4 15. Be4 Rb8 16. O-O Qa4 17. Qg3 g6 {½-½ (17) Salem,A (2228)-Porter,R (2176) Mallorca 2004}) 13... Qxa5 ({Don't play} 13... Rxa5 14. Be2 $17) (13... c5 $19 14. Bd3 Qxa5) 14. b4 Qa1 15. Qe3 Qb1 {aiming for ...Ra1.} 16. Bd3 Qxb4+ 17. Bd2 Ra1+ 18. Ke2 Qb2 19. Rxa1 Qxa1 20. Qc5 f6 21. f4 (21. exf6 $17 gxf6 22. Bb4 Qe5+ 23. Qxe5 fxe5 24. Bd6) 21... Kf7 $19 22. Bb4 {Threatening mate with Qe7+.} Re8 23. exf6 {White threatens Qh5+ and mate.} Qb2+ 24. Kf3 g6 25. Qa5 $2 (25. h4) 25... c5 26. Bc3 Bb7+ 27. Ke3 Qc1+ 28. Ke2 Ra8 29. Bd2 Qg1 30. Qc7 Qxg2+ {Black mates.} 31. Kd1 Qf3+ 32. Be2 Ra1+ {Precision: White = 37%, Black = 87%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Radkov, Bazhen D"]
[Black "Berelowitsch, Alexander"]
[Result "0-1"]
[ECO "A81"]
[WhiteElo "2192"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,80,42,5,36,51,39,29,35,42,39,0,0,0,-7,-23,0,-19,-10,-12,0,0,0,0,38,-32,58,64,53,68,60,3,22,0,0,-197,70,22,22,0,0,-19,-25,-27,-24,-50,-41,-153,-113,-119,-120,-111,-117,-104,0,0,-4,-20,-18,-89,-95,-135,-122,-381,-368,-492,-483]} 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. O-O O-O 6. b3 Ne4 7. Bb2 Nc6 8. Nbd2 d6 9. c4 {LiveBook: 101 Games} a5 {A87: Dutch Defence: Leningrad System: 5 Nf3} (9... Nxd2 10. Qxd2 e5 11. d5 Nb8 12. Ng5 Qe7 13. f4 e4 14. Bxg7 Qxg7 15. Rac1 h6 16. Nh3 Nd7 17. Nf2 a5 18. Nd1 Nc5 19. Ne3 {1-0 (74) Neiksans,A (2607)-Piorun,K (2655) Jurmala 2016}) 10. Nxe4 fxe4 11. Ng5 e5 {White has an edge.} 12. Nxe4 {And now dxe5 would win.} exd4 $146 ({Predecessor:} 12... Nxd4 13. e3 Nc6 14. Qe2 Be6 15. Rad1 Qe7 16. Nc3 Kh8 17. Nd5 {½-½ (58) Gatterer,F (2350)-Nepustil,F (2390) ICCF email 2011}) 13. Nd2 Qe7 14. Re1 Bg4 15. h3 Bf5 16. e3 d3 17. Bxg7 Qxg7 18. g4 Bd7 $1 19. a3 a4 20. Ne4 (20. Rb1 $14) 20... Na5 ({Black should play} 20... g5 $1 $15) 21. b4 $14 Nxc4 22. Qxd3 Ne5 23. Qd5+ (23. Qe2 $14) 23... Kh8 $11 24. f4 Bc6 $36 {[%mdl 2048] Black has the initiative.} 25. Qd4 $2 {[#]} (25. Qd1 $11 {and White has nothing to worry.} Nc4 26. Qd3) 25... Nd7 $2 (25... Rxf4 $1 $19 {[%mdl 512] aiming for ...Bxe4!} 26. Kh1 (26. exf4 $2 {is the wrong capture.} Nf3+ 27. Bxf3 Qxd4+ 28. Kg2 Re8 $19) 26... Rf7) 26. Qxg7+ Kxg7 27. Ng5 {Threatens to win with Ne6+.} Rae8 28. Bxc6 bxc6 29. Rac1 c5 30. bxc5 Nxc5 31. Rcd1 (31. Nf3 $15) 31... Re7 32. Nf3 Rfe8 33. Kf2 Rb8 34. Nd4 Rb2+ ({Black should try} 34... Ne4+ $17 35. Kg1 Ree8) 35. Re2 Rb6 {Hoping for ...Ne4+.} 36. Rc2 Ne4+ 37. Kg2 (37. Kf3 $11 {keeps the balance.}) 37... c5 $17 38. Nf3 Rb3 39. g5 $2 {[%mdl 8192]} (39. Ng5 $17) 39... Rxa3 $19 40. h4 Rxe3 {Precision: White = 36%, Black = 58%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1"]
[White "Janzelj, Lara"]
[Black "Ladva, Ottomar"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "2152"]
[BlackElo "2532"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,46,38,47,47,62,60,60,-159,-145,-223,-214,-191,-185,-375,-357,-365,-342,-352,-203,-523,-527,-738,-743,-744,-730,-952,-973,-960,-952]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 a6 6. a4 b6 7. Bxc4 Bb7 8. O-O c5 9. Qe2 Nc6 10. Rd1 Qc7 11. d5 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4} exd5 $1 12. Bxd5 Be7 13. Bxf7+ $146 (13. e4 $1 $14 {keeps the upper hand.} Rd8 14. Bg5) ({Find the theoretical novelty and annotate with similar games:} 13. e4 O-O 14. e5 Nd4 15. Rxd4 cxd4 16. exf6 Bxf6 17. Bxb7 Qxb7 18. Ne4 Qc6 19. Nxf6+ Qxf6 {1-0 (39) Atalik,S (2570)-Krush,I (2465) Kansas 2003}) 13... Kxf7 $17 14. Ng5+ (14. e4 $17 Rhd8 15. Rxd8 Nxd8 16. Qc4+ Kf8 17. e5) 14... Ke8 $1 $19 15. Ne6 {[#]} Qc8 $1 {[%cal Rc8e6]} 16. Nd5 $2 {[#]} (16. Nf4) 16... Nxd5 $1 17. Qh5+ g6 18. Qxd5 Bf6 (18... Na5 $142 19. Qe5 Kf7 20. Ng5+ Bxg5 21. Qxg5 Rd8) 19. Qd6 $2 (19. Qb3 {is more resistant.}) 19... Kf7 {Black is clearly winning.} 20. e4 {If only White now had time for Ng5+....} Qxe6 21. Qc7+ Be7 ({Less strong is} 21... Qe7 22. Rd7 $17) 22. Qxb7 Ra7 23. Qxb6 Rb8 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1.2"]
[White "Nabaty, Tamir"]
[Black "Tvarijonas, Tomas"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2654"]
[BlackElo "2263"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,91,39,29,70,76,102,83,89,94,182,106,103,107,104,98,111,42,120,120,128,114,128,112,127,117,114,104,131,59,56,33,43,41,40,44,122,69,128,103,108,96,80,28,185,185,212,203,193,170,296,286,277,277,280,281,364,354,334,308,414,414,474,456,568,565,794,788,781,780,779,768,2122,2335,1732,1731,29980,29982,29984,29985,29985,29986]} 1. d4 d5 2. Bf4 Nf6 3. e3 Bf5 4. c4 e6 5. Nc3 dxc4 6. Bxc4 c6 7. Nf3 Qb6 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} (7... Nd5 8. Bg3 Qa5 9. Qb3 Qb4 10. O-O Nb6 11. e4 Bg6 12. Be2 Qxb3 13. axb3 N8d7 14. d5 Bh5 15. dxc6 bxc6 {1-0 (51) Deviatkin,A (2569)-Barua,D (2410) Groningen 2012}) 8. Qe2 $146 ({Predecessor:} 8. Bb3 h6 9. O-O Be7 10. h3 O-O 11. Qc1 Nbd7 12. Bc2 Bxc2 13. Qxc2 Nd5 14. Bg3 N7f6 15. e4 Nxc3 16. bxc3 {1-0 (49) Perdi,Z (1745)-Rab,J (1813) Hungary 2016}) 8... Ne4 9. O-O Be7 {White is better.} 10. Ne5 {Hoping for g4.} g5 (10... Qd8 $16) 11. g4 (11. Nxe4 $18 gxf4 12. Nc5 (12. exf4 Qxd4 13. Ng5 Bxg5 $18) 12... Bxc5 13. dxc5 Qxc5 14. exf4) 11... Bg6 12. Nxg6 hxg6 13. Be5 (13. Nxe4 gxf4 14. exf4 Qc7 $14) 13... Nf6 14. Na4 ({Better is} 14. f4 $16 Nbd7 15. Bxe6 (15. fxg5 Nxe5 16. gxf6 Nxc4 $14) 15... fxe6 16. fxg5) 14... Qb4 (14... Qd8 $1 $14) 15. Nc5 $1 $16 {[#] a3 is the strong threat.} Rh4 16. a3 Qb6 17. b4 Nbd7 18. Bg3 Rxg4 19. e4 {Threatens to win with e5.} Rf4 (19... Nxc5 $2 20. dxc5 Bxc5 21. bxc5 $18) 20. Nxd7 (20. Bxf4 $16 gxf4 21. e5) 20... Nxd7 $14 21. d5 Ne5 22. dxe6 f6 23. Rfd1 (23. Bxf4 $6 gxf4 24. Rfd1 a5 $16) 23... Qc7 (23... Kf8 $14) 24. Kh1 (24. Kg2 $16) 24... Bd6 (24... a5 $14) 25. b5 Bc5 26. bxc6 bxc6 27. Rac1 (27. a4 $16) 27... Ke7 $2 (27... Qa5 $11 {and Black is okay.}) 28. Bb5 $36 {[%mdl 2048] White is on the roll.} Qb6 {[#]} 29. Bxc6 $1 {[%mdl 512]} Qxc6 30. Rd5 Rc8 (30... Rb8 $142 31. Rcxc5 (31. Bxf4 gxf4 32. f3 Rc8 $16) 31... Qa4 32. Bxf4 gxf4) 31. Rdxc5 ({Much less strong is} 31. Bxf4 gxf4 32. Rdxc5 Qxc5 $18) 31... Qxc5 32. Rxc5 ({Not} 32. Bxf4 Nc4 $14) 32... Rxc5 33. Qe3 Rc6 34. Bxf4 gxf4 35. Qxf4 Kxe6 {[%mdl 4096] Endgame KQ-KRN} 36. Qe3 a6 37. f4 Nc4 38. Qd3 Ke7 39. Qd5 Rc7 40. f5 gxf5 41. exf5 {[%cal Be4f5,Bf5f6][%mdl 32]} a5 42. Qe6+ Kd8 43. Qxf6+ Ke8 44. Qe6+ {White mates.} Kf8 45. f6 a4 46. h3 {Precision: White = 64%, Black = 30%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1.8"]
[White "Bogner, Sebastian"]
[Black "Gurpreet, Singh Maras"]
[Result "1-0"]
[ECO "E16"]
[WhiteElo "2600"]
[BlackElo "2247"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,97,50,29,29,27,22,13,13,13,17,17,14,12,12,0,0,0,13,14,13,15,17,11,12,14,45,56,58,39,54,51,66,31,53,66,81,98,98,71,76,81,72,72,228,221,388,400,394,383,435,450,313,313,445,456,431,341,475,460,531,519,394,335,364,370,270,253,528,538,573,579,945,936,934,932,861,825,779,715,5999,5891]} 1. Nf3 Nf6 2. c4 b6 3. d4 e6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 c5 7. Bxb4 cxb4 8. O-O O-O 9. a3 Qe7 10. Qb3 {LiveBook: 4 Games. E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+} Nc6 11. Nbd2 Rfc8 $146 ({Find the theoretical novelty and annotate with similar games:} 11... bxa3 12. Qxa3 Nb4 13. Rac1 Ne4 14. Nxe4 Bxe4 15. Ne5 Bxg2 16. Kxg2 a5 17. Nd3 Rfc8 {½-½ (66) Shen,Y (2443)-Hou,Y (2602) Ningbo 2011}) 12. d5 {The position is equal.} Na5 13. Qxb4 Qxb4 14. axb4 Nxc4 15. Nxc4 Rxc4 16. Ne5 Rxb4 17. Nd3 Rb3 18. dxe6 Bxg2 19. exf7+ Kxf7 20. Kxg2 a5 21. Rfc1 Ke7 22. Ra4 Ra7 23. g4 h6 24. h4 Rb5 25. Kg3 Kd8 26. Rac4 Ne8 27. Rc8+ Ke7 28. f4 Nd6 29. Rg8 Kf7 30. Rb8 Ne4+ $2 (30... a4 $16) 31. Kf3 $18 Nc5 $2 (31... Nd6 {was necessary.} 32. Ne5+ Ke6) 32. Ne5+ Ke7 33. Rd1 g5 34. fxg5 hxg5 {[#]} 35. h5 $1 {[%cal Rh5h6]} ({Not} 35. hxg5 Ne6 $16) 35... Rb3+ (35... Ne6 {might work better.} 36. Nc4 d5) 36. e3 {Threatens to win with h6.} Kf6 37. Nc4 b5 38. Nd6 Rxb2 39. h6 {Hoping for Kg3.} Rh2 40. Nf5 Kg6 {[#]} 41. Kg3 $1 ({Weaker is} 41. Rxb5 Ne6 $18) 41... Rxh6 42. Rg8+ Kf6 $2 (42... Kh7) 43. Nxh6 {White is clearly winning.} b4 44. Rd6+ Ke7 45. Nf5+ Kf7 46. Rg7+ Ke8 47. Rh6 {[%cal Rh6h8]} Kd8 48. Nd6 b3 49. Nb5 {Precision: White = 69%, Black = 47%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1.14"]
[White "Neiksans, Arturs"]
[Black "Player, Edmund C"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2582"]
[BlackElo "2226"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,120,35,30,39,26,43,35,39,34,81,75,72,71,80,73,73,79,107,91,91,91,91,91,91,91,91,91,86,81,86,89,143,143,141,141,139,144,144,145,145,150,150,143,139,139,136,135,141,131,125,111,127,60,79,85,72,71,78,72,68,88,99,97,75,82,120,110,102,113,120,20,20,20,56,64,542,1545,1373,1345,945,676,1688,1533,12267,5720,12840,12840,12841,12843,12843,12841,12845,12843,12845,12844,12846,12843,12844,12844,12851,12851,12851]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 O-O 6. Nd5 Bc5 {A28: English Opening: Four Knights Variation} (6... Re8 7. Ng5 h6 8. Nxf6+ Qxf6 9. Qh7+ Kf8 10. Ne4 Qg6 11. Qxg6 fxg6 12. Bd3 Be7 13. Nc3 Kf7 14. O-O g5 {½-½ (68) Kovalenko,I (2657)-Paichadze,L (2568) Minsk 2017}) 7. Ng5 g6 8. Nxf6+ Qxf6 9. Ne4 Qe7 10. a3 a5 11. b3 {LiveBook: 3 Games} d6 12. Bb2 Be6 13. Be2 Bb6 14. Nc3 $146 ({Predecessor:} 14. O-O Nb8 15. d4 {1-0 (30) Hellers,F (2500)-Moberg,K (2300) Stockholm 1992}) 14... Nd8 15. Nd5 Bxd5 16. cxd5 c6 17. Bf3 Rc8 18. O-O f6 19. Rac1 Rc7 20. Qd3 Qd7 21. dxc6 bxc6 22. Qa6 Rb7 23. Rxc6 $1 Nxc6 24. Qc4+ Rf7 {Hoping for ...Rc7.} 25. Bxc6 Rc7 (25... Qc7 $142) 26. Bxd7 $16 Rxc4 27. bxc4 Rxd7 {[%mdl 4096] Endgame KRB-KRB} 28. Bc3 Rc7 29. Rb1 Rc6 30. Rb5 Bc7 31. Bxa5 Bxa5 32. Rxa5 Rxc4 {[%cal Rc4c1] KR-KR} 33. Kf1 Kf7 34. Ke2 Ke6 35. Kd1 h5 36. Rb5 (36. a4 $16) 36... Rh4 37. h3 Ra4 38. Rb3 g5 39. Kc2 g4 40. hxg4 Rxg4 41. g3 h4 {[#]} 42. gxh4 $1 Rxh4 43. Rb4 Rh2 44. f4 Kd5 45. Rb1 ({White should try} 45. f5 $16) 45... exf4 $11 46. exf4 Kc5 47. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} Rh7 $2 {[%mdl 8192] [#]} (47... Rf2 $14) 48. a5 $1 $18 {White is clearly winning.} Ra7 49. Ra1 Ra6 50. Kd3 f5 51. Kc3 d5 52. Kd3 d4 53. Re1 Rh6 54. Re5+ Kb4 55. Rxf5 Rd6 56. Re5 Rf6 57. f5 Kb3 58. Kxd4 Kc2 59. Ke4 Kxd2 60. Re6 Rf8 {Precision: White = 78%, Black = 43%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1.21"]
[White "Najart, David"]
[Black "Kotsur, Pavel"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2213"]
[BlackElo "2558"]
[Annotator "TA"]
[PlyCount "35"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,35,0,19,19,14,0,0,0,0,0,56,53,106,97,94,109,152,60,58,49]} 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O a6 8. Qb3 Bd6 {A13: English Opening: 1...e6} 9. Nc3 O-O {LiveBook: 8 Games} 10. d4 (10. a4 Rb8 11. a5 Bc7 12. Qa3 c4 13. b3 cxb3 14. d4 b5 15. axb6 Rxb6 {½-½ (67) Hou,Y (2651)-Kramnik,V (2809) Medias 2016}) 10... Qc7 {The position is equal.} 11. Rd1 b5 12. e4 {[%cal Be2e4,Be4e5][%mdl 32] aiming for e5.} cxd4 $146 ({Predecessor:} 12... c4 13. Qc2 e5 14. Bg5 Bb7 15. dxe5 Bxe5 {1-0 (42) Hild,D-Grohde,W corr 1998}) 13. Nxd4 Nc5 (13... Bc5 $1 $11) 14. Qc2 $1 $14 {Threatens to win with e5!} Rb8 {[#]} (14... Be5 $14) 15. Nc6 $1 $16 {[%mdl 512] Black must now prevent Rxd6.} Rb6 {[#]} (15... Qxc6 16. e5) 16. e5 $1 {[%cal Re5d6][%mdl 512]} Rxc6 (16... Bxe5 17. Nxe5) 17. Bxc6 ({Inferior is} 17. exd6 Rxd6 18. Rxd6 Qxd6 $11) (17. exf6 $16 g6 18. Ne2) 17... Bxe5 $14 18. Bg2 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.07"]
[Round "1.25"]
[White "Tirelli, Mauro"]
[Black "Kantans, Toms"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2201"]
[BlackElo "2541"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,101,29,16,13,0,2,13,14,9,37,19,38,15,15,10,12,18,25,8,112,29,87,72,97,111,108,105,142,88,95,90,88,-47,-39,-41,-45,-44,-46,-47,-43,-46,-39,-65,-62,-50,-40,-49,-39,-95,-4,-61,-11,-119,-125,-119,-128,-150,-128,-204,-138,-138,0,0,0,0,1608,1621,12833,12834,2033,1833,1059,1952,1612,1668,1610,1620,1223,1183,1012,833]} 1. b3 Nf6 2. Bb2 g6 3. Nf3 Bg7 4. e3 O-O 5. Be2 c5 6. c4 Nc6 7. O-O b6 8. d4 cxd4 9. Nxd4 Bb7 10. Bf3 Qc7 {A30: Symmetrical English: Double Fianchetto and Hedgehog} 11. Nc3 Rac8 {[%cal Ba8c8,Bc8c5,Bc5g5][%mdl 32]} (11... Nxd4 12. Bxb7 Qxb7 13. Qxd4 Ne4 14. Qxe4 Qxe4 15. Nxe4 Bxb2 16. Rad1 d6 17. Rd5 a6 18. Rb1 {½-½ (36) Dragun,K (2621)-Sadzikowski,D (2563) Warsaw 2017}) 12. Rc1 {LiveBook: 3 Games} (12. Ndb5 {with more complications.} Qb8 13. Qd2 a6 14. Na3 d6 15. Rad1) 12... Nxd4 {The position is equal.} 13. Bxb7 $146 ({Predecessor:} 13. exd4 d5 14. c5 bxc5 15. dxc5 Bc6 16. Ne2 e5 17. Ng3 Rfd8 18. Re1 {½-½ (38) Brueckel,G (2330)-Raidna,R (2374) IECG email 2002}) 13... Qxb7 14. Qxd4 d6 15. Rfd1 Rc5 16. Qd2 Rfc8 17. a4 Rg5 {[%csl Gg5][%cal Rb7g2]} 18. f4 Rgc5 19. Ba3 Rh5 20. Qd3 g5 (20... Nd7 $11) 21. f5 (21. Qe2 $16) 21... g4 (21... Rh4 $11) 22. Nd5 g3 {[#]} 23. h3 $1 ({Of course not} 23. hxg3 $6 Rg5 $11) 23... Rh4 24. e4 Rxe4 25. Qxg3 (25. Qf3 $142) 25... Nxd5 $16 26. Rxd5 Kh8 27. Re1 (27. Qf3 $16 Rh4 28. Bb4) 27... Be5 $15 28. Qf2 Rf4 29. Qe2 Rxf5 30. Bb2 {Hoping for Qe4.} f6 31. Bxe5 Rxe5 32. Rxe5 dxe5 {[%mdl 4096] Endgame KQR-KQR} 33. Rd1 Qc6 34. Qd2 Rg8 {White must now prevent ...Qf3.} 35. Qd5 ({White should try} 35. Kh2 $15) 35... Qc8 (35... Qxd5 $17 36. Rxd5 Rg3) 36. Kh1 (36. b4 $11) 36... Qf5 {With the idea ...Qc2.} 37. b4 (37. Qd7 $11 {keeps the balance.} Qxd7 38. Rxd7) 37... Qc2 $17 {Threatens to win with ...Rxg2!} 38. c5 bxc5 39. bxc5 Rc8 40. Rd3 (40. Qd7 $17 Qxc5 41. a5) 40... Qc1+ 41. Kh2 Qf4+ (41... Qxc5 $17 42. Qf7 Rg8) 42. Rg3 $11 {Strongly threatening c6.} Rf8 43. c6 {[%cal Bc5c6,Bc6c7][%mdl 32] c7 is the strong threat.} h5 $2 {[%mdl 8192] [#]} (43... e4 $11) 44. Qd1 $1 $18 {[%cal Rd1h5] White is clearly winning.} Qf5 45. c7 {White wants to mate with Qd8.} h4 46. Rd3 e4 47. Rd8 Qe5+ 48. Kh1 Qxc7 49. Rxf8+ Kg7 50. Rd8 f5 51. Rd7 {Precision: White = 45%, Black = 50%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Shirov, Alexei"]
[Black "Krivonosov, Oleg"]
[Result "1/2-1/2"]
[ECO "C24"]
[WhiteElo "2648"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,65,6,18,14,13,13,14,15,13,15,26,23,25,16,15,8,4,-17,8,-35,-22,-29,-32,-24,-11,0,15,-54,-25,-58,-56,-70,-17,-30,0,0,0,-7,-7,-12,0,0,0,0,0,-6,-7,-6,0,0,0,0,0,0]} 1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nc3 Na5 5. Bb3 Nxb3 6. axb3 d5 7. exd5 Bb4 8. Nf3 {C28: Vienna Game: 2...Nf6 3 Bc4 Nc6} Nxd5 9. Bd2 Nxc3 10. Bxc3 Bxc3+ 11. bxc3 O-O 12. O-O f6 13. Qe2 {[#]} Bg4 $146 ({Find the theoretical novelty and annotate with similar games:} 13... Qd5 14. c4 Qd6 {½-½ (14) Pauwels,C (2551)-Freeman,M (2515) ICCF email 2010}) 14. Ra4 Bd7 15. Rh4 Bc6 16. Nd2 {[%cal Bf3d2,Bd2c4,Bc4e3,Be3f5][%mdl 32]} Qe8 17. Nc4 a5 18. Ne3 a4 19. bxa4 $1 Rxa4 20. c4 (20. Rxa4 $11 Bxa4 21. Ra1) 20... Ra5 21. Nf5 b6 22. d4 Bd7 ({Better is} 22... Qd7 $15 23. Ng3 exd4) 23. Ne3 $11 exd4 24. Rxd4 {The position is equal.} Bc6 25. Rfd1 Re5 26. h3 $1 h6 27. Qd2 Qg6 28. Rg4 Rg5 29. Qd4 Re8 30. Qf4 Re7 31. Rd8+ Kh7 32. Rc8 h5 33. Rxg5 {Precision: White = 60%, Black = 56%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Onischuk, Vladimir"]
[Black "Rakesh Kumar Jena"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2610"]
[BlackElo "2394"]
[Annotator "TA"]
[PlyCount "37"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,37,5,25,0,14,2,10,7,36,36,44,58,102,100,194,219,200,195,360,146,250,245,251,252,252,252]} 1. e4 c5 2. Nf3 e6 3. b3 b6 4. Bb2 Bb7 5. Nc3 Nf6 (5... a6 6. Qe2 Nc6 7. O-O-O Nge7 8. Qe3 Qc7 9. Kb1 b5 10. h4 O-O-O 11. h5 h6 12. Rh3 d5 13. exd5 exd5 {1-0 (41) Tomashevsky,E (2728)-Navara,D (2734) Huaian 2016}) 6. e5 {B40: Sicilian: 2...e6, Unusual lines} Nd5 7. Nxd5 Bxd5 {LiveBook: 4 Games} 8. Be2 {White has an edge.} Be7 9. c4 $146 ({Predecessor:} 9. O-O O-O 10. c4 Bb7 11. d4 f6 12. dxc5 bxc5 13. exf6 Bxf6 14. Bxf6 Rxf6 {1-0 (57) Tworzydlo,P (2153)-Zawadzka,J (2391) Wroclaw 2013}) 9... Bb7 10. d4 cxd4 11. Qxd4 Nc6 12. Qg4 Bb4+ 13. Kf1 $1 O-O (13... Qc7 $16) 14. h4 $1 $18 Be7 15. Bd3 $1 {[%cal Rd3h7] White wants to mate with Bxh7+!} g6 $2 {[#]} (15... h6 {keeps fighting.}) 16. Rd1 (16. h5 $1 $18 {[%cal Rh5g6] is the precise move to win.} f5 17. exf6 Bxf6 18. hxg6 Bxb2 19. g7 Bxa1 20. gxf8=N+ (20. Bxh7+ Kf7 $11) 20... Kxf8 21. Ng5) 16... f5 {[#]} (16... Nb4 $16) 17. exf6 $1 Bxf6 18. Ba3 {Hoping for Bxg6.} Rf7 19. Be4 {Precision: White = 57%, Black = 14%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Kovchan, Alexander"]
[Black "Mandizha, Farai"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2587"]
[BlackElo "2392"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,66,12,24,42,25,-14,2,-59,-42,-69,-54,-100,-118,-166,-164,-184,-180,-188,-199,-189,-177,-218,-204,-218,-169,-225,-215,-260,-221,-308,-308,-302,-295,-394,-391,-460,-458,-436,-440,-463,-447,-784,-784,-791,-784,-774,-781,-1031,-1009,-1056,-1000,-2051,-2037,-2712,-2612,-29983,-29984,-29984,-29985]} 1. c4 e5 2. Nc3 f5 3. d4 e4 4. g4 (4. g3 c6 5. h4 Be7 6. Nh3 Nf6 7. Nf4 Na6 8. d5 Bd6 9. Bg2 O-O 10. O-O Qe7 11. f3 exf3 12. exf3 {1-0 (40) Kraus,T (2426)-Rohacek,M (2330) Ceske Budejovice 2016}) 4... Bb4 5. gxf5 Bxc3+ 6. bxc3 {A21: English Opening: 1...e5 2 Nc3} d6 7. h4 $146 ({Predecessor:} 7. Bh3 Nd7 8. Bf4 Qh4 9. e3 Nh6 10. Bg3 Qe7 11. Qh5+ Kf8 {1-0 (40) Dornieden,M (2279)-Reichenbach,W (2305) Templin 2004}) 7... Bxf5 8. Qd2 (8. Bh3 $11 Qd7 9. Bxf5 Qxf5 10. Rb1) 8... Nf6 9. h5 h6 10. Qf4 {[#]} Qd7 $1 11. e3 O-O 12. Ne2 Nc6 {[%cal Bb8c6,Bc6a5,Ba5c4][%mdl 32]} 13. Qg3 Na5 14. Nf4 Qa4 {[#] And now ...Nb3! would win.} 15. Be2 Nxc4 16. Rb1 Qc6 17. Ng6 (17. a4 {was necessary.}) 17... Rf7 $19 {[%cal Bf8f7,Bf7f5,Bf5g5][%mdl 32]} 18. O-O b5 19. Nh4 Nd5 20. Rb3 a5 21. Nxf5 Rxf5 22. Bg4 Rg5 23. f4 exf3 24. Qxf3 Qe8 {Hoping for ...Nf6.} 25. Kh1 (25. Rb2 $142 Nxb2 26. e4) 25... Ndxe3 26. Bh3 Nxf1 ({Weaker is} 26... Rxh5 27. Bxe3 a4 28. Rbb1 $17) 27. Bxg5 Nfd2 28. Qd5+ Kh8 29. Bxd2 Nxd2 30. Rb2 Qe1+ 31. Kg2 Rf8 {( -> ...Rf2+)} 32. Bf5 Qf1+ 33. Kg3 Rxf5 {Precision: White = 16%, Black = 82%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Stocek, Jiri"]
[Black "Nesteretz, Anatoliy"]
[Result "1-0"]
[ECO "E73"]
[WhiteElo "2583"]
[BlackElo "2375"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,61,39,39,78,56,64,31,30,25,43,0,2,17,102,105,79,89,104,92,87,53,68,66,86,72,59,35,41,36,83,78,79,82,237,235,263,261,254,245,299,270,486,528,510,487,594,615,669,656,1677,1661]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Be3 Na6 7. Nf3 Qe8 {E91: King's Indian: Classical: 6 Be2, unusual replies including 6...c5 and 6...Bg4} (7... Ng4 8. Bg5 h6 9. Bh4 c5 10. O-O g5 11. Bg3 Nf6 12. dxc5 Nxc5 13. Nd2 a5 14. Rc1 e5 15. Re1 {0-1 (38) Horvath,C (2537)-Naiditsch,A (2710) Hungary 2015}) 8. O-O Ng4 9. Bc1 e5 {White is slightly better.} 10. h3 Nf6 11. Be3 {White wants to play dxe5.} exd4 12. Bxd4 c5 $146 (12... b6 $11) ({Find the theoretical novelty and annotate with similar games:} 12... Nxe4 13. Bxg7 Kxg7 14. Qd4+ Nf6 15. Nd5 Qd8 16. Ng5 {1-0 (27) Chuprikov,D (2404)-Chekhov,S (2251) Voronezh 2007}) 13. Bxf6 $1 $16 Bxf6 14. Qxd6 Bxc3 15. bxc3 Qxe4 16. Bd3 Qe6 17. Qf4 f5 18. Rae1 Qf6 19. Qh6 Qg7 20. Qh4 {[#] Threatens to win with Re7.} Qf6 21. Ng5 $36 {[%csl Gg5][%cal Rh4h7][%mdl 2048] Black is under strong pressure.} Qg7 22. f4 Nb8 $2 {[#]} (22... Bd7 $16 {is a better defense.}) 23. Be2 $1 $18 Nc6 24. Bf3 Bd7 25. Rd1 h5 26. Qf2 Nd8 $2 (26... Rae8 {might work better.} 27. Qxc5 Kh8) 27. Qxc5 {White is clearly winning.} Bc6 28. Bxc6 bxc6 29. Rfe1 Qxc3 30. Re7 Nf7 31. Qxc6 {Precision: White = 83%, Black = 38%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Braun, Arik"]
[Black "Stauskas, Lukas"]
[Result "1-0"]
[ECO "A43"]
[WhiteElo "2577"]
[BlackElo "2372"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,73,41,47,81,67,80,75,85,57,96,87,92,81,102,56,97,81,143,127,140,142,139,142,136,124,123,92,148,103,246,237,246,220,276,253,250,271,310,285,295,227,273,191,403,396,365,319,318,315,439,426,429,427]} 1. d4 c5 2. d5 g6 3. e4 Bg7 4. Nf3 d6 5. Nc3 Nf6 6. Bb5+ Nbd7 7. a4 O-O 8. O-O Ne8 9. Re1 Nc7 10. Bf1 a6 {A43: Schmid Benoni} (10... b6 11. Bf4 Bb7 12. Qd2 Ne5 13. Nxe5 dxe5 14. Be3 Qd6 15. a5 f5 16. f3 Kh8 17. Red1 Bf6 18. Ra3 Rfd8 {½-½ (72) Sjugirov,S (2665)-Novikov,M (2513) Kolomna 2016}) 11. Bf4 Rb8 12. Qd2 {LiveBook: 4 Games} Re8 {White is slightly better.} 13. a5 $146 ({Predecessor:} 13. e5 Nxe5 14. Nxe5 dxe5 15. Bxe5 Bf5 16. a5 Bxe5 17. Rxe5 {1-0 (40) Cifuentes Parada,R (2530)-Valiente,C (2320) Buenos Aires 1988}) 13... b5 14. axb6 $1 Rxb6 15. Ra2 Nb5 16. Na4 Rb8 17. c3 Bb7 18. h3 Qc7 19. Bc4 Ne5 (19... Nf8 $142) 20. Nxe5 $16 Bxe5 21. Bxe5 dxe5 22. b3 {[%cal Bb2b3,Bb3c4,Bc4d5][%mdl 32]} Nd6 23. Nb2 Bc8 24. Qc2 Qb6 (24... a5 $142) 25. Nd3 Nxc4 (25... e6 $16 {was necessary.}) 26. bxc4 $18 Qc7 27. Rea1 e6 28. Ra5 exd5 29. Rxc5 Qb6 30. cxd5 Bd7 31. c4 f5 32. Rca5 {Threatens to win with Qc3.} fxe4 $2 {[#]} (32... Qd4 33. Rd1 (33. Rxa6 fxe4 34. Ne1 Rec8 $14) 33... fxe4) 33. Nc5 Bf5 34. Qc3 ({Worse is} 34. Nxe4 Qd4 $15) 34... Rbc8 35. Qe3 ({Don't play} 35. Nxa6 $6 Qd4 $18) 35... Rc7 36. g4 Bc8 37. Nxe4 {Precision: White = 62%, Black = 33%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Alekseenko, Kirill"]
[Black "Haubro, Martin"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2575"]
[BlackElo "2367"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,57,22,22,35,28,26,14,15,16,8,0,35,14,36,33,117,62,66,50,94,33,75,52,64,59,73,89,116,91,94,92,187,207,209,33,605,566,1275,1239]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 d6 5. O-O Be7 6. c3 O-O 7. Re1 a6 8. Ba4 Re8 9. Nbd2 Bf8 10. Nf1 h6 11. Ng3 b5 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines} 12. Bc2 d5 13. Qe2 d4 {The position is equal.} 14. h3 Be6 15. Bd2 Nd7 16. cxd4 exd4 17. Nh5 {[#]} f6 $146 ({Black should try} 17... a5 $14) ({Find the theoretical novelty and annotate with similar games:} 17... Nb6 18. Nf4 Bc8 19. Bb3 {0-1 (45) Swiercz,D (2620)-Fressinet,L (2702) Berlin 2015}) 18. Qd1 (18. Rec1 $16) 18... Kh7 $14 19. Rc1 Bf7 20. Ng3 (20. Nh4 $16) 20... Nc5 21. b4 Ne6 22. a3 {Hoping for Bb3.} a5 23. Bb3 $36 {[%mdl 2048] White is in control.} Ra6 {[%cal Ra5b4]} 24. e5 axb4 25. axb4 {Threatens to win with exf6.} Nxb4 (25... Nxe5 $16 {keeps fighting.} 26. Nxe5 fxe5) 26. exf6 $18 gxf6 {[#]} 27. Nh4 $2 ({Only move:} 27. Re4 $1 $18) 27... Nc6 $2 {[%mdl 8192]} (27... f5 $14 28. Bxe6 (28. Ngxf5 Nxd3 29. Bxe6 Rexe6 $15) 28... Rexe6 29. Rxe6 Rxe6) 28. Qf3 Qd7 29. Ne4 {Precision: White = 47%, Black = 22%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Brunello, Sabino"]
[Black "Quillan, Gary"]
[Result "1/2-1/2"]
[ECO "A73"]
[WhiteElo "2566"]
[BlackElo "2361"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,53,56,45,54,52,45,52,43,45,41,42,18,30,0,0,0,0,-11,15,9,24,0,0,-8,0,-27,-27,-27,-27,-29,-18,-28,0,0]} 1. d4 e6 2. c4 Nf6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Be2 O-O 9. O-O Bg4 10. Bf4 Bxf3 11. Bxf3 Ne8 {[%cal Bf6e8,Be8c7,Bc7b5,Bb5d4][%mdl 32] LiveBook: 10 Games. A73: Modern Benoni: Classical: Unusual Black 9th moves} 12. Qd2 (12. Qb3 Qc7 13. Be2 a6 14. Bg5 Bf6 15. Be3 Nd7 16. f4 Bd4 17. Nd1 Bxe3+ 18. Qxe3 Nef6 19. Nf2 {½-½ (60) Bacrot,E (2705)-Cyborowski,L (2543) Germany 2011}) 12... Nd7 13. Rfe1 Qe7 $146 {White is slightly better.} ({Predecessor:} 13... Rb8 14. a4 a6 15. Be2 Bf6 16. a5 Qe7 17. Bf1 Nc7 18. Bg3 Na8 19. Kh1 {½-½ (69) Manojlovic,S (2166)-Toth,G (2172) Hungary 2002}) 14. h3 Nc7 15. Be2 a6 16. Bf1 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 17. Bg3 b4 18. Nd1 Nb5 19. f3 {[%cal Bf2f3,Bf3f4][%mdl 32]} Nb6 20. Ne3 Qd7 21. f4 Nd4 22. Rad1 f5 23. Nc4 Nxc4 24. Bxc4 fxe4 25. Rxe4 a5 26. Kh2 Rf7 27. Bf2 {Precision: White = 31%, Black = 62%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Zeng, Chongsheng"]
[Black "Kleinman, Michael"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2537"]
[BlackElo "2340"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,86,18,28,33,23,20,13,34,0,19,-34,-11,-25,-24,-29,-24,-109,-108,-100,-90,-112,-95,-130,-93,-101,-41,-44,-33,-41,-25,-30,-15,-67,-62,-50,-52,-83,-79,-106,-100,-127,-115,-123,-98,-91,-51,-56,-54,-133,-128,-133,-72,-498,-62,-52,0,0,321,27,34,28,154,20,82,0,0,-47,-41,-31,0,-29987,-29988,-29993,-29994]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qd2 Nf6 8. O-O-O Be7 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2} 9. f3 (9. f4 b5 10. e5 b4 11. exf6 bxc3 12. Qxc3 Bxf6 13. g4 h6 14. h4 Bb7 15. Rh2 Rc8 16. Qd2 Nxd4 17. Bxd4 Bxd4 18. Qxd4 {½-½ (49) Jakovenko,D (2703)-Inarkiev,E (2707) Geneve 2017}) 9... b5 10. Kb1 h5 {[%cal Bh7h5,Bh5h4][%mdl 32] The position is equal.} 11. Qf2 d6 12. Nb3 (12. h3 $11) 12... Bd7 $15 13. Qg3 $146 ({Find the theoretical novelty and annotate with similar games:} 13. a3 Rb8 14. Bc1 b4 15. axb4 Nxb4 16. Rd4 a5 17. Rc4 {0-1 (53) Nowicki,B (2256)-Jarmula,P (2140) Lazy 2014}) 13... h4 14. Qf2 Rb8 15. Ne2 (15. a3 $11 {remains equal.}) 15... Ne5 $17 (15... Nb4 $6 16. Nec1 $11) 16. Qe1 Nc4 17. Bf4 Rc8 18. c3 Qb6 19. Nd2 Ne5 (19... d5 $17 20. Nd4 O-O) 20. Nc1 $15 a5 21. Qe3 Qb7 22. Be2 Bc6 23. Ndb3 (23. Ncb3 $11) 23... Ra8 24. Nd4 Bd7 25. Bg5 Nc4 26. Bxc4 bxc4 27. Rhe1 Rb8 {[%csl Gb8][%cal Rb7b2]} 28. Rd2 Rh5 29. f4 {[#]} Rxg5 $1 {[%mdl 512]} 30. fxg5 Ng4 $1 {[%csl LRe3,LRh2]} 31. Qh3 (31. Qf4 $2 e5 $19) (31. Qf3 $1 $15 Bxg5 32. Rde2) 31... Bxg5 $17 32. Rc2 Ne5 (32... Ba4 $142 $1 {[%cal Ra4c2]} 33. b3 Ne5) 33. Nf3 $2 {[%mdl 8192]} (33. Rce2 $17) 33... Bxc1 $2 ({Better is} 33... Nd3 $19 34. Nxg5 Nxb2) 34. Rexc1 $15 {Threatens to win with Nxe5.} Nd3 (34... Qxe4 $15 35. Nxe5 dxe5) 35. Qxh4 $11 {aiming for e5.} a4 $2 {[%mdl 8192]} ({But not} 35... Nxb2 $6 36. Ka1 $16) (35... Ba4 $11 {and Black stays safe.} 36. Rd2 Nxc1 37. Kxc1 f6) 36. Qh8+ $2 ({White should try} 36. Rf1 $18) 36... Ke7 $14 37. Qxg7 {Hoping for e5.} a3 {[#]} (37... Nxc1 $11 {keeps the balance.} 38. Kxc1 Qxe4) 38. Ng5 (38. Rf1 $1 $16 Ba4 39. Rd2 Nxb2 40. Nd4 Nd1+ 41. Nb3) 38... Nxc1 $11 39. Rf2 (39. Qxf7+ $16 Kd8 40. Nxe6+ (40. Kxc1 Qb6 $16) 40... Bxe6 41. Qxe6) 39... Kd8 40. Kxc1 {Strongly threatening b3.} axb2+ 41. Kb1 Qa7 {[#] ( -> ...Qxa2+!)} (41... Qa6 $5 {[%cal Ra6a2]} 42. Qf6+ Kc8 43. Rxb2 Rxb2+ 44. Kxb2 Qb6+ 45. Kc2 Ba4+ 46. Kd2 Qb2+ 47. Ke3 Qxg2 48. Nxf7 Qg1+ 49. Qf2 Qc1+ 50. Qd2 Qg1+ 51. Qf2 Qc1+ 52. Qd2 Qg1+ 53. Qf2 $11) 42. Qf6+ $2 {[%mdl 8192]} (42. Nxe6+ $1 $11 {[%mdl 512]} Bxe6 43. Qf8+ Kc7 44. Qe7+ Kb6 45. Qxd6+ (45. Rxb2+ Ka6 $11) 45... Kb7 46. Rxb2+ Kc8 47. Rxb8+ Qxb8+ 48. Qxb8+ Kxb8 49. Kc2) 42... Kc7 43. a4 Qxa4 {Precision: White = 26%, Black = 54%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Berelowitsch, Alexander"]
[Black "Srinath, Rao S V"]
[Result "1-0"]
[ECO "C03"]
[WhiteElo "2527"]
[BlackElo "2324"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,79,10,20,0,37,0,31,30,29,10,33,8,48,38,75,76,125,124,145,137,133,125,175,175,175,161,173,176,221,214,212,203,254,247,280,280,280,275,269,258,300,306,296,285,381,367,486,506,485,476,590,590,667,537,702,691,824,829,827,813,1016,962]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} e6 2. d4 d5 3. Nd2 Be7 4. Ngf3 Nf6 5. e5 Nfd7 6. Bd3 c5 7. c3 b6 8. O-O Ba6 9. Bxa6 Nxa6 10. Re1 b5 {LiveBook: 12 Games. C05: French Tarrasch: 3...Nf6 4 e5 Nfd7, 5 f4 and 5 Bd3 sidelines} (10... O-O) 11. Qe2 c4 12. Nf1 Nb6 {The position is equal.} 13. Ng3 $146 ({Predecessor:} 13. Bd2 h6 14. b3 Nc7 15. a4 a5 16. Reb1 bxa4 17. bxa4 Rb8 18. Ra2 {0-1 (58) Tsaruk,M (2003)-Srinath,R (2279) St Petersburg 2016}) 13... h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 14. Qe3 Nc7 15. Qf4 h4 16. Ne2 b4 17. Qg4 g6 {[#]} 18. cxb4 $1 Bxb4 19. Bg5 Be7 20. b3 a5 21. Bxe7 Qxe7 {[#]} 22. Rab1 $1 Kd7 23. h3 ({Don't do} 23. bxc4 $6 Nxc4 24. Nf4 Rab8 $16) 23... Rab8 24. Nc3 {[%cal Be2c3,Bc3a4,Ba4c5][%mdl 32]} cxb3 25. axb3 ({Much less strong is} 25. Rxb3 $6 Nc4 $16) 25... Ra8 26. Rec1 Ra7 27. Qf4 Ke8 28. Na4 Nd7 29. Nc5 Nb6 30. Ra1 Kf8 31. Qd2 Kg7 32. Rxa5 Rha8 33. Rxa7 {White is clearly winning.} Rxa7 34. Nh2 {[%cal Bf3h2,Bh2g4,Bg4h6][%mdl 32]} Ne8 35. Ng4 Kg8 36. Kh2 Ra8 37. Rc3 Nd7 38. Nxd7 Qxd7 39. Rf3 Qe7 40. Nh6+ {Precision: White = 83%, Black = 21%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Blomqvist, Erik"]
[Black "Meissner, Felix"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2525"]
[BlackElo "2320"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,71,40,40,40,45,35,40,40,45,45,92,86,89,32,33,34,137,125,133,121,114,123,122,114,115,115,115,116,116,108,105,107,124,111,117,110,135,132,146,132,177,190,308,298,261,263,345,339,462,453,421,339,933,892,1287,1154,29972,29975,29974,29975]} 1. e4 g6 2. d4 c6 3. Nc3 d5 4. Nf3 dxe4 5. Nxe4 Nf6 (5... Bf5 6. Bd3 Bg7 7. c3 Nd7 8. O-O Bxe4 9. Bxe4 Ngf6 10. Bc2 O-O 11. Re1 Re8 12. Bf4 a5 13. h3 {1-0 (61) Wirig,A (2486)-Battaglini,G (2475) Chartres 2017}) 6. Nxf6+ {B15: Caro-Kann: 3 Nc3: 3...g6 and 3...dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6} exf6 7. Bc4 Bg7 {LiveBook: 3 Games} 8. Qe2+ {White is slightly better.} Qe7 9. Qxe7+ Kxe7 10. O-O Be6 11. Re1 b5 $146 ({Predecessor:} 11... Kd7 12. Be2 Rd8 13. h3 {1-0 (51) Ducarmon,Q (2368)-Knol,G (2130) Maastricht 2012}) 12. Bb3 Kd7 13. Nd2 ({Better is} 13. d5 $16 Bxd5 14. Bf4 Bxb3 15. axb3) 13... Re8 $14 14. Ne4 {[#] Threatens to win with Bh6!} Bxb3 (14... Na6 $14) 15. axb3 $16 {Hoping for Bd2.} a5 16. Nc5+ Kd8 {[%cal Re8e1]} 17. Bd2 Rxe1+ 18. Bxe1 f5 19. Rxa5 Rxa5 20. Bxa5+ {[%mdl 4096] Endgame KBN-KBN} Kc8 21. Bc3 Bf8 22. Nd3 Bd6 23. Bd2 Nd7 24. f3 f6 25. Kf2 h5 26. h4 Kd8 27. c4 {[%cal Bc2c4,Bc4c5][%mdl 32]} Ke8 (27... Bc7 $142 28. Nb4 Nb8) 28. c5 $18 Bc7 {[#]} 29. Bf4 $1 {[%cal Rf4c7]} Ba5 30. Bd6 Nf8 31. b4 Bd8 {Now ...Ne6 and Black clings on.} 32. Nf4 g5 $2 (32... Be7 33. Bxe7 Kxe7) 33. Bxf8 gxf4 34. Bd6 Kd7 35. d5 cxd5 36. Ke2 {Precision: White = 82%, Black = 33%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Schneider, Ilja"]
[Black "Rogule, Laura"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2519"]
[BlackElo "2314"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,79,48,59,52,49,48,35,24,20,28,24,23,6,-3,-39,32,24,151,139,146,156,284,277,306,308,481,480,444,195,406,396,408,397,393,385,457,396,473,468,456,463,456,454,616,612,607,576,510,438,918,907,1041,1015,1936,1625,12841,12841,12841,12842,12842,12843,12843,12843]} 1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 b6 5. d5 (5. Bg2 Bb7 6. d5 exd5 7. cxd5 g6 8. Nc3 Bg7 9. Bf4 O-O 10. O-O a6 11. Nd2 Nh5 12. Bd6 Re8 13. a4 a5 14. Nc4 Na6 {1-0 (34) Radjabov,T (2734)-Harikrishna,P (2727) Beijing 2014}) 5... Ba6 6. Qb3 {E10: Blumenfeld Gambit} exd5 7. cxd5 Be7 8. Nc3 O-O 9. Bg2 d6 10. O-O {LiveBook: 4 Games} Re8 11. Re1 Bf8 $146 ({Predecessor:} 11... Nbd7 12. a4 Bf8 13. e4 Bd3 {½-½ (46) Tancik,K (2123)-Govedarica,R (2415) Senta 2006}) 12. Nd2 Nbd7 {[%cal Bb8d7,Bd7e5,Be5g4][%mdl 32]} 13. a4 Ne5 14. Nb5 Bb7 15. f4 Neg4 16. e3 h5 ({Black should try} 16... a6 $15 17. Na3 c4 $1 {[%mdl 512]} 18. Naxc4 Bxd5) 17. Qd3 $14 Qc8 {[#]} (17... g6 $11) 18. Nc4 $1 $16 Qd8 19. Bd2 h4 (19... a6 $16 {was necessary.}) 20. h3 $18 ({But not} 20. gxh4 $6 a6 $16) 20... hxg3 {Strongly threatening ...Nf2.} 21. hxg4 Nxg4 (21... a6 $142) 22. e4 Qh4 23. Ncxd6 (23. Ra3 $142) 23... Ba6 $2 (23... c4 {was worth a try.} 24. Qd4 (24. Qxc4 Ba6 $18) 24... Ba6) 24. Nf5 ({Weaker is} 24. Nxe8 c4 $18) 24... Qh2+ 25. Kf1 g6 26. Qxg3 Bxb5+ 27. axb5 gxf5 28. Qxh2 {White is clearly winning.} Nxh2+ 29. Kg1 Ng4 {If only Black now had time for ...fxe4....} 30. e5 f6 {[%cal Rf6e5]} 31. d6 Rad8 32. Bd5+ Kh8 33. Bf7 fxe5 (33... Nxe5 $142 34. Bxe8 Nf3+ 35. Kf2 Nxe1 36. Rxe1 Rxd6) 34. Bxe8 Rxe8 35. fxe5 Bg7 36. Bc3 Nxe5 37. Bxe5 Bxe5 {[#]} 38. Rxe5 $1 {[%mdl 512]} Rxe5 39. d7 Rd5 40. Rxa7 {Precision: White = 75%, Black = 33%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Lei, Tingjie"]
[Black "Bente, Bjoern"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2514"]
[BlackElo "2310"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,69,13,19,29,20,20,24,24,23,28,25,31,14,27,19,30,30,26,12,11,22,23,0,35,12,22,31,70,81,70,60,87,62,135,143,422,440,427,437,429,430,428,409,424,433,391,404,695,623,667,445,518,517,601,560,545,470,570,554,638,641]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} c6 2. d4 d5 3. e5 Bf5 4. Nd2 e6 5. Nb3 Nd7 6. Nf3 Ne7 {B12: Caro-Kann: Advance Variation} 7. Be2 Nc8 8. O-O Be7 {White has an edge.} 9. a4 O-O 10. a5 a6 11. Ne1 c5 12. g4 $146 ({Predecessor:} 12. Nxc5 Nxc5 13. dxc5 Bxc5 14. Bd3 {1-0 (48) Karjakin,S (2771)-Shyam,S (2468) Dubai 2014}) 12... Bg6 13. f4 {Strongly threatening f5.} Be4 14. c3 cxd4 15. cxd4 Na7 16. Nd2 Nc6 17. Nxe4 dxe4 18. Be3 Bb4 19. Qc2 Bxa5 20. Qxe4 Bxe1 21. Raxe1 Qe7 (21... Nb6 $14) 22. f5 $16 {And now f6! would win.} Kh8 $2 {[%mdl 8192] [#]} (22... Rfd8 $16 23. Rd1 (23. fxe6 fxe6 24. g5 g6 $16) 23... Nb6) 23. f6 $1 $18 {[%mdl 512]} gxf6 24. Bd3 {[%csl Gd3][%cal Re4h7]} f5 25. gxf5 Rg8+ 26. Kh1 Nf8 27. Rg1 {[#] aiming for Rxg8+.} exf5 28. Qxf5 Rxg1+ (28... Qe6 $142 29. Qf3 Rxg1+ 30. Rxg1 Ng6) 29. Rxg1 {Black must now prevent Bg5.White is clearly winning.} Qe6 30. Bg5 {Bf6+ would kill now.} Qxf5 31. Bxf5 {[%cal Rg5f6]} Ng6 32. d5 Nd4 33. Be4 Kg7 34. Bf6+ Kf8 35. Rd1 {Precision: White = 88%, Black = 45%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Korchmar, Vasiliy"]
[Black "Nabaty, Tamir"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "2398"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,106,22,12,17,9,18,0,6,10,11,0,0,-3,-6,-10,-13,-26,-18,-25,-6,-15,-8,-38,-10,-24,-18,-22,0,0,0,0,0,0,0,0,0,0,0,0,22,14,2,14,56,51,66,62,66,53,83,72,73,50,55,14,14,14,14,14,14,14,14,14,15,16,16,0,19,18,18,17,35,10,25,0,0,-9,0,0,0,0,0,0,0,-79,-85,-79,-62,-1133,-1108,-1111,-1039,-1029,-949]} 1. d4 d5 {[%cal Bd7d5,Bd5c4][%mdl 32]} 2. c4 c6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 g6 6. O-O Bg7 7. a4 O-O 8. Na3 {LiveBook: 37 Games. D73: Fianchetto Grünfeld: 5 Nf3} Ne4 (8... Be6 9. Ng5 Bf5 10. Nxc4 h6 11. Nf3 Nbd7 12. a5 Be4 13. b3 b5 14. axb6 axb6 15. Bb2 Qc7 {½-½ (43) Laznicka,V (2679)-Vitiugov,N (2742) Dubai 2014}) 9. Nxc4 Be6 10. Qc2 {The position is equal.} (10. b3 {looks sharper.} Nd6 11. Nce5 Qb6 12. Rb1 Bf5 13. Nd3) 10... Nd6 11. Nxd6 exd6 $146 ({Predecessor:} 11... Qxd6 12. Bf4 Qb4 13. Qc3 Na6 14. Ne5 Rfd8 15. Rfd1 f6 {1-0 (59) Piesik,P (2207)-Molenda,M (1910) Krakow 2013}) 12. Bg5 Qd7 13. b4 Na6 {[%cal Bb8a6,Ba6c7,Bc7d5][%mdl 32]} 14. Qd2 Bd5 15. h4 Rfe8 16. Kh2 Nc7 17. Rfe1 Be4 18. Bh3 Bf5 19. Bxf5 Qxf5 20. Qf4 Nd5 21. Qxf5 gxf5 22. Bd2 c5 23. bxc5 dxc5 24. Rab1 b6 25. dxc5 bxc5 26. Rb5 Rac8 27. Rc1 Bf8 $1 28. e3 Nf6 29. Be1 a6 30. Rb6 Re6 31. a5 Rd8 32. Rcb1 Nd5 33. Rb8 (33. Rb7 {seems wilder.} c4 34. Nd4 Ree8 35. Nxf5 Rc8 36. Rd7) 33... Ree8 34. Rxd8 (34. R8b7 {looks sharper.} c4 35. Rc1 Rc8 36. Rd7 Rc5 37. Nd4) 34... Rxd8 35. Ne5 Nb4 36. Kg2 f6 37. Nc4 Kf7 38. Kf3 Ke6 39. Ke2 Rb8 40. Rd1 Be7 41. Nb6 Nc6 42. Bc3 Rb7 43. Nd5 Nb4 44. Nxe7 (44. Nf4+ {keeps more tension.} Kf7 45. Rd2 Rb5 46. Rd7 Rxa5 47. Ra7) 44... Kxe7 $11 {[%mdl 4096] Endgame KRB-KRN} 45. Rd2 Ke6 46. Rd8 Nd5 47. Be1 c4 {[%cal Bc5c4,Bc4c3,Bc3c2][%mdl 32]} 48. Rc8 Rc7 49. Ra8 (49. Rxc7 $11 {remains equal.} Nxc7 50. Bc3) 49... c3 $17 50. Rxa6+ {[#]} Kf7 $1 51. Rd6 $2 {[%mdl 8192] [#]} (51. Kf3 $15) 51... c2 $1 $19 {[%cal Rc2c1] Black is clearly winning.} 52. Bd2 Nc3+ 53. Kd3 Ne4 {Precision: White = 47%, Black = 70%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Ikeda, Junta"]
[Black "Jumabayev, Rinat"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "2397"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "123"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,123,50,37,13,10,6,13,-43,-30,-53,-39,-55,0,-26,-20,-38,0,-6,17,0,9,16,17,-24,0,-21,23,9,16,7,33,-13,0,0,0,-7,0,0,32,31,22,0,0,0,0,0,40,14,12,-63,13,0,-8,-13,0,0,35,0,0,0,10,-13,-13,-13,-13,-13,-12,-8,62,59,56,57,64,58,71,79,91,64,92,92,132,78,89,79,114,111,139,97,101,79,115,87,86,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 d6 7. c3 O-O 8. Re1 Re8 9. Nbd2 {C84: Closed Ruy Lopez: Unusual White 6th moves} Bf8 10. Nf1 (10. h3 h6 11. d4 b5 12. Bc2 Bb7 13. a4 exd4 14. cxd4 Nb4 15. Bb1 c5 16. d5 Nd7 17. Ra3 c4 18. axb5 axb5 19. Nd4 Rxa3 20. bxa3 Nd3 21. Bxd3 cxd3 22. Bb2 Nc5 23. Bc3 Qb6 24. Re3 Bc8 25. N4b3 Qa6 26. Bb4 Qa4 27. Qb1 f5 28. exf5 Rxe3 29. fxe3 Bxf5 30. Nd4 Bd7 31. N4f3 Bf5 {½-½ (31) Yu,Y (2750)-Harikrishna,P (2758) Shenzhen 2017}) 10... g6 11. Ng3 Bg7 12. h3 b5 {LiveBook: 3 Games} 13. Bb3 Na5 14. Bc2 c5 15. d4 (15. Be3 $11) 15... cxd4 $15 16. cxd4 exd4 17. Nxd4 Qb6 (17... Bb7 $1 $15) 18. Nf3 Bb7 19. Be3 {[#]} Qc7 $146 ({Predecessor:} 19... Qd8 20. Bd4 Nc6 21. Bc3 b4 22. Bd2 {½-½ (53) Stefanova,A (2478)-Hebden,M (2549) Catalan Bay 2004}) 20. Rc1 Qe7 21. Bd3 Nd7 22. Qd2 Nc6 23. Nh2 h5 24. Bg5 Bf6 (24... Qe5 {is more complex.} 25. b3 Qb2 26. Rc2 Qd4 27. Nf3 Qb4) 25. Bxf6 Qxf6 26. Bb1 Rad8 27. Ne2 Nb6 28. b3 d5 29. Qf4 Qe7 {[%cal Rd5e4]} 30. Ng3 d4 31. Nf3 Nd7 32. Red1 Nde5 33. Nxe5 Nxe5 34. f3 Rd6 35. Nf1 Red8 36. Nh2 (36. Qd2 $11) 36... Rc6 ({Black should try} 36... g5 $15 37. Qd2 d3) 37. Qd2 Rxc1 38. Rxc1 d3 39. Nf1 Qd6 40. Re1 Qd4+ 41. Qe3 Qc3 42. f4 Nc6 43. Rc1 Qb2 44. Rd1 Nb4 45. f5 $1 Qe5 (45... Kg7 $11) 46. a3 $14 Nc6 47. Rxd3 Rxd3 48. Bxd3 Qd6 49. b4 Ne5 50. Be2 Qc6 51. Nd2 Qc1+ {[#]} 52. Bf1 ({White should play} 52. Kf2 $1) 52... Qb2 $16 53. fxg6 fxg6 54. Nf3 ({But not} 54. Qb6 Qxd2 55. Qxb7 Qe3+ 56. Kh1 Qf4 $11) 54... Nf7 55. Be2 Qb1+ 56. Kf2 Nd6 57. Nd2 Qb2 58. Kf3 (58. e5 $16 Qxd2 59. Qxd2 Ne4+ 60. Ke3 Nxd2 61. Kxd2) 58... Qf6+ $11 {The position is equal.} 59. Qf4 Qc3+ 60. Qe3 Qf6+ 61. Qf4 Qc3+ 62. Qe3 {Precision: White = 42%, Black = 40%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Saveliev, Alexei"]
[Black "Bogner, Sebastian"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "2396"]
[BlackElo "2600"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 31,71,0,0,-5,18,6,35,33,36,31,29,25,18,27,12,24,59,66,80,79,180,173,177,185,229,100,276,162,167,148,134,38,343,342,622,544,526,508,527,530,526,505]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Qc7 8. f4 Be7 9. Be3 O-O 10. Bf3 Nc6 11. a4 Re8 12. Kh1 Nxd4 13. Qxd4 e5 14. Qd2 exf4 15. Bxf4 Be6 {B85: Sicilian Scheveningen: 6 Be2 a6, lines with early Be3} 16. Rad1 Rad8 {[#] LiveBook: 8 Games} 17. Rfe1 $146 ({Predecessor:} 17. h3 Rd7 18. Rfe1 Red8 19. Re3 h6 20. Rd3 Bc4 21. Rd4 Be6 22. Rd3 Bc4 23. Rd4 Be6 24. Be3 Rc8 25. Bf4 {½-½ (25) Landa,K (2550)-Movsesian,S (2647) Tripoli 2004}) 17... Kh8 {The position is equal.} 18. Bg3 Qb6 19. b3 Qc7 20. Ne2 Ng4 21. Bxg4 (21. Nf4 $5 {[%cal Rf4e6]} Ne5 22. Bh5 $14 (22. Nxe6 fxe6 23. Be2 Rf8 $11)) 21... Bxg4 22. h3 Bh5 23. Qd5 Bg6 24. c4 Bf8 25. Nf4 $36 {[%mdl 2048] White is really pushing.} Kg8 (25... Qc6 $16) 26. Nxg6 $18 hxg6 27. Rf1 b6 {[#]} 28. Rf3 (28. a5 $1 $18 {[%mdl 512] and the rest is easy.}) 28... Re6 $2 (28... Qa7 $16 {is a better defense.}) 29. e5 (29. Rdf1 $142) 29... Be7 30. exd6 Bxd6 {[#]} 31. Rfd3 (31. a5 $1 $16 {[%cal Ra5b6][%mdl 512] Hoping for axb6.} Kh7 (31... bxa5 32. c5) 32. Rff1 (32. axb6 Qxb6 33. Bf2 Qc7 $14)) 31... Kf8 $2 {[%mdl 8192]} (31... Qe7 $1 $14) 32. b4 {[%cal Bb3b4,Bb4c5][%mdl 32]} ({Not} 32. Bxd6+ Rexd6 33. Qxd6+ Rxd6 $16) 32... Ke7 $2 (32... Kg8 33. c5 (33. Bxd6 Rexd6 34. Qxd6 Rxd6 $14) 33... Bxg3 34. Qxd8+ Qxd8 35. Rxd8+ Kh7) 33. Bh4+ {White is clearly winning.} f6 {[#]} 34. c5 $1 {[%mdl 512]} bxc5 35. bxc5 g5 36. Bf2 {Precision: White = 34%, Black = 29%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Agmanov, Zhandos"]
[Black "Tregubov, Pavel V"]
[Result "1/2-1/2"]
[ECO "B45"]
[WhiteElo "2393"]
[BlackElo "2593"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,41,31,58,0,0,0,0,0,0,0,0,0,0,0,5,0]} 1. e4 c5 2. Nf3 {[%cal Bg1f3,Bf3d4,Bd4b5,Bb5c3,Bc3e2][%mdl 32]} e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 exd5 10. Bd3 O-O 11. O-O d4 12. Ne2 Bg4 13. Bg5 Qd6 14. Qd2 {B45: Sicilian Four Knights} h6 {[#] LiveBook: 3 Games} 15. Bxh6 $146 {[%mdl 512]} ({Predecessor:} 15. Bf4 Qd7 16. Bxh6 Bxe2 17. Bxg7 Bxd3 18. Bxf6 Qf5 19. Qh6 Qh7 20. Qg5+ Bg6 21. f4 Qh5 {0-1 (57) Adhiban,B (2666)-Tregubov,P (2585) Doha 2016}) 15... gxh6 $11 {The position is equal.} 16. f3 $1 Bh5 {White must now prevent ...Kg7.} 17. Qxh6 Bg6 $1 18. Bxg6 fxg6 19. Qxg6+ Kh8 20. Qh6+ Kg8 21. Qg6+ 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Sveshnikov, Vladimir"]
[Black "Neiksans, Arturs"]
[Result "0-1"]
[ECO "C27"]
[WhiteElo "2377"]
[BlackElo "2582"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,64,0,-6,4,4,16,26,28,32,39,14,11,-14,10,7,26,0,0,-21,-10,-58,-61,-53,-47,-93,-71,-65,-68,-73,-75,-202,-127,-114,-114,-118,-112,-152,-165,-145,-150,-156,-153,-189,-189,-277,-277,-392,-382,-862,-567,-526,-436,-607,-607]} 1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Be7 6. Qxe5 O-O {C27: Vienna Game: 2...Nf6 3 Bc4 Nxe4} 7. Nge2 {LiveBook: 3 Games} (7. d4 Nc6 8. Qf4 Na5 9. Bd5 Ne8 10. Bf3 Nc6 11. Nd5 Bd6 12. Qd2 b6 13. Ne2 Nf6 14. Ne3 {½-½ (43) Caruana,F (2782)-Giri,A (2734) Wijk aan Zee 2014}) 7... Ne8 8. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} c6 $146 {The position is equal.} ({Predecessor:} 8... d6 9. Qg3 Nf6 10. h4 Kh8 11. h5 h6 12. Bf4 Nc6 13. f3 Na5 14. Qh2 Nxb3 15. axb3 {0-1 (52) Jakubowski,K (2510)-Leniart,A (2455) Ostroda 2011}) 9. d5 d6 10. Qg3 c5 11. O-O Nd7 12. Ne4 Ndf6 13. Nxf6+ Bxf6 14. c4 g6 15. Re1 Be5 16. f4 Bf6 17. Qf3 Ng7 18. Ng3 Bd4+ 19. Kh1 Re8 20. Rxe8+ Qxe8 21. Bc2 (21. Bd2 $17) 21... Qe1+ 22. Qf1 Qxf1+ 23. Nxf1 Bg4 24. Bd3 Re8 $36 {[%mdl 2048] [#] Threatens to win with ...Re1. Black is really pushing.} 25. Bd2 Be2 26. Bxe2 Rxe2 27. Rb1 Nf5 28. b3 (28. g3 {is a better defense.}) 28... Nh4 $19 29. Re1 (29. g3 $142 Nf3 30. Rd1) 29... Rxg2 {[%csl Gd4][%cal Rg2g1] [#]} 30. Re8+ (30. Be3 $142 Bxe3 31. Rxe3) 30... Kg7 {[%csl Gd4][%cal Rg2g1] Black is clearly winning.} 31. Be3 Bxe3 32. Nxe3 Rxa2 {Precision: White = 29%, Black = 69%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Miedema, David"]
[Black "Kulaots, Kaido"]
[Result "0-1"]
[ECO "E10"]
[WhiteElo "2373"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,89,21,15,9,14,10,-19,83,72,85,12,11,-91,-94,-186,-179,-147,-75,-147,-116,-85,45,33,56,38,40,37,159,34,56,44,77,70,79,75,110,79,112,96,106,20,204,217,277,219,243,141,171,126,125,80,63,-293,-288,-266,-291,-282,-279,-277,-275,-325,-303,-492,0,-230,0,-486,-489,-475,-474,-5306,-5297,-5273]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. O-O Nbd7 8. Qc2 c6 9. Rd1 b6 10. Bf4 {LiveBook: 694 Games} Ba6 {E08: Closed Catalan: Main Line: 7 Qc2} (10... Bb7 11. Ne5 Nh5 12. Bd2 Nhf6 13. cxd5 cxd5 14. Nc6 Bxc6 15. Qxc6 Rc8 16. Qb5 Ne8 17. Qd3 Nd6 18. Nc3 Nf6 19. b3 Qd7 20. Rac1 Rfd8 21. Rc2 Nde4 22. Be1 {½-½ (22) Radjabov,T (2710)-Gelfand,B (2724) Moscow 2017}) 11. Ne5 Rc8 12. Qa4 Bxc4 (12... Nb8 $1 $11) 13. Nxc6 $16 ({Reject} 13. Nxc4 b5 $15) 13... Qe8 14. Nxa7 $146 (14. Nc3 $16) ({Find the theoretical novelty and annotate with similar games:} 14. Nc3 a5 15. e4 b5 16. Nxe7+ Qxe7 17. Nxb5 Nh5 18. Be3 dxe4 {½-½ (56) Rahman,A (2324)-Dragnev,V (2430) Khanty-Mansiysk 2016}) 14... Ra8 $11 15. Bf1 {[#]} (15. Na3 $11 {keeps the balance.} g5 16. Bc7) 15... b5 $1 $17 {[%mdl 512]} 16. Qa5 {[#]} (16. Qc2 $17 {keeps fighting.}) (16. Nxb5 Rxa4) 16... e5 $1 $19 {[%cal Re5f4][%mdl 512]} 17. dxe5 Ne4 (17... Ng4 $142 $1 18. b3 Bc5 19. bxc4 Bxf2+ 20. Kg2 g5 21. Bxg5 Rxa7 22. Qxb5 Qxe5) 18. b3 {[#]} (18. Be3 $142) 18... Nxf2 $1 {[%mdl 512]} 19. Kxf2 Rxa7 (19... Bc5+ $17 20. Ke1 Rxa7) 20. Qxa7 $14 Bc5+ 21. Qxc5 $1 Nxc5 22. bxc4 dxc4 (22... f6 $1 $14 23. e6 (23. Rxd5 $2 fxe5 24. e3 exf4 $19) 23... Ne4+ 24. Kg1 Qxe6) 23. Na3 (23. Nc3 $16) 23... Ne4+ 24. Kg1 $1 Qc6 {Strongly threatening ...Qc5+.} 25. Be3 {aiming for Bg2.} Nc3 26. Rd2 b4 27. Bg2 Qa6 28. Nc2 Qa5 29. Bd4 (29. Kh1 $16) 29... Na4 $2 (29... Nb5 $1 $11 30. Be3 Nc3) 30. Rdd1 $18 c3 31. Rab1 Nb2 32. Rdc1 ({Better is} 32. Rf1 $18) 32... Rd8 $16 33. e3 {Hoping for Nxb4!} Nd3 {[#]} 34. Rf1 $1 {Black must now prevent e6!} Qa4 35. Rbd1 $2 {[%mdl 8192]} (35. Ne1 $14 {stays ahead.} Nb2 36. Ra1) 35... Qxc2 $19 36. Be4 {[#]} Qxd1 $1 {[%mdl 512]} 37. Rxd1 c2 38. Rf1 c1=Q 39. Bxd3 Qc6 40. Rf2 $2 (40. Bb1 {is a better defense.}) 40... Qc1+ $2 ({Black should play} 40... Rc8 $19 {...Qa8 is the strong threat.} 41. Bf5 Rc7) 41. Kg2 $2 (41. Rf1 $11 {and White has nothing to worry.} Qc6 42. Rb1) 41... Qc6+ $2 (41... Rc8 42. Be4 Qc4) 42. Kg1 Rc8 {Black is clearly winning.} 43. Bf5 Rc7 44. Rb2 (44. Bg4 $142 Qc1+ 45. Rf1) 44... Qf3 {[%cal Rc7c1]} 45. Rc2 {Precision: White = 26%, Black = 46%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Haldorsen, Benjamin"]
[Black "Vorobiov, Evgeny E"]
[Result "0-1"]
[ECO "B80"]
[WhiteElo "2362"]
[BlackElo "2569"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,68,37,32,25,25,36,22,16,93,0,0,-97,-91,-91,-97,-485,-493,-504,-502,-499,-387,-391,-382,-837,-828,-785,-468,-695,-680,-693,-438,-685,-652,-793,-833,-752,-789,-1002,-1000,-1052,-1049,-1026,-990,-931,-760]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. Qd2 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 8. f3 Nbd7 9. O-O-O Bb7 10. g4 h6 11. h4 b4 12. Na4 Qa5 13. b3 Nc5 $1 {[%cal Rc5a4]} 14. a3 {B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack} Nxa4 (14... Rc8 15. Qxb4 Qc7 16. Nxc5 dxc5 17. Qa4+ Nd7 18. Ne2 Bc6 19. Qc4 Ne5 20. Qc3 Nxf3 21. Bf4 e5 22. Qxf3 exf4 23. Qxf4 {1-0 (44) Nakamura,H (2710)-Vachier Lagrave,M (2703) San Sebastian 2009}) 15. axb4 ({Avoid the trap} 15. bxa4 $2 d5 $19) 15... Qc7 {aiming for ...Nc3.} 16. bxa4 {The position is equal.} Nd7 {[#]} (16... d5 $11) 17. Rg1 (17. c4 $1 $16) 17... d5 $11 18. f4 $146 {[#]} (18. g5 $11 {remains equal.} hxg5 19. Bxg5) ({Predecessor:} 18. g5 hxg5 19. Bxg5 Qb6 20. c3 Rc8 21. Kb1 dxe4 22. fxe4 Bxe4+ {1-0 (43) Fuchs,J (2291)-Brunner,N (2425) Martigny 2015}) 18... Nf6 $1 $36 {[%cal Rf6e4,Bd7f6,Bf6g4,Bg4f2][%mdl 2080] Black is on the roll.} 19. Bg2 Qc4 20. e5 $2 {[%mdl 8192]} (20. Qd3 $17 {is a better chance.} Qxb4 21. exd5 Nxd5 22. Qb3) 20... Bxb4 $19 21. Qd3 Qa2 {[%cal Ra2a1]} 22. Nb3 Nxg4 23. Bd4 Rc8 24. Bf3 $2 {[#]} (24. Na1 Nf2 25. Qb3 Qa3+ 26. Bb2 Qxb3 27. Nxb3 Nxd1 28. Kxd1) 24... Nf2 $1 {[%mdl 512] Black is clearly winning.} 25. Bxf2 Rc3 {Threatens to win with ...Qxb3.} 26. Qxc3 (26. Bd4 $142 Rxd3 27. Rxd3) 26... Bxc3 {[%csl Gc3][%cal Ra2b2]} 27. Rd3 Qb2+ 28. Kd1 O-O 29. Be3 {intending Bc1.} Rc8 30. Bc1 Qb1 31. Rg2 Bb2 32. f5 exf5 33. Bxd5 Bxd5 34. Rxd5 Rb8 {Precision: White = 23%, Black = 77%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Migot, Tangi"]
[Black "Ghosh, Diptayan"]
[Result "1/2-1/2"]
[ECO "C95"]
[WhiteElo "2360"]
[BlackElo "2562"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,80,21,20,23,25,22,23,27,0,0,0,0,-16,0,0,0,-39,-41,-31,-12,-45,-38,-37,-45,-40,-20,-42,-37,-54,0,0,0,0,0,0,0,0,0,0,0,0,0,-4,-5,-17,0,0,0,12,91,33,41]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. a4 Bf8 14. Bd3 c6 15. b3 g6 16. Bb2 {LiveBook: 97 Games} Nh5 {C95: Closed Ruy Lopez: Breyer Variation with 10 d4} 17. Bf1 Qc7 18. Qc2 Nf4 {White has an edge.} 19. c4 {[%cal Rc4b5]} bxa4 20. Rxa4 exd4 {[#]} 21. Nxd4 $146 ({Predecessor:} 21. g3 Ne6 22. Nxd4 Nec5 {½-½ (34) Gashimov,V (2740)-McShane,L (2615) Novi Sad 2009}) 21... c5 22. N4f3 Ne6 (22... Bc6 $5 {[%cal Rc6a4]} 23. Ra3 (23. Qc3 Ne5 $11) 23... Ne5 $11) 23. g3 Ne5 {[%cal Bd7e5,Be5c6,Bc6b4][%mdl 32]} 24. h4 Nc6 25. Bh3 Nb4 26. Qb1 ({Avoid the trap} 26. Qc3 $2 Bg7 $19) 26... Bc6 27. Ra1 a5 28. e5 dxe5 (28... Nd4 $5 29. Bxd4 (29. Nxd4 cxd4 30. e6 Bg7 $15) 29... cxd4 30. Nxd4 dxe5 31. Nxc6 Nxc6 $11) 29. Nxe5 Nd4 ({Black should try} 29... Bb7 $15 30. Bg2 Bxg2 31. Kxg2 Bg7) 30. Bxd4 $11 cxd4 31. Nxc6 Nxc6 32. Bg2 $1 Bb4 33. Qd3 Bc3 34. Bxc6 Qxc6 35. Rxe8+ Rxe8 36. Rd1 Qb7 37. Qf3 Qe7 {[#] And now ...Bxd2 would win.} 38. Kg2 Kg7 39. Nb1 Qb4 (39... Ba1 $1 $11 {remains equal.}) 40. Nxc3 (40. h5 $16) 40... dxc3 {Precision: White = 65%, Black = 61%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Sanders, Isaac B"]
[Black "Boruchovsky, Avital"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2359"]
[BlackElo "2556"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,65,-4,0,-15,2,-22,12,31,42,0,0,0,0,0,0,0,212,212,212,201,207,214,430,426,1239,1218,5689,1125,1106,427,980,983,943,481,880,301,304,298,297,287,460,458,451,431,391,381,406,382,397,382,530,524]} 1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 g6 5. Bc4 Bg7 6. O-O e6 7. d3 Nge7 8. Qe1 a6 9. Qh4 {B23: Closed Sicilian: Lines without g3} (9. Bb3 h6 10. Qg3 Na5 11. f5 exf5 12. Bf4 Nxb3 13. axb3 g5 14. Bxd6 f4 15. Bxf4 Bxc3 16. Bc7 Bd4+ 17. Kh1 Qd7 18. Nxd4 cxd4 19. Rf6 Ng8 20. Rf5 Ne7 21. Rf6 Ng8 {½-½ (21) Andreikin,D (2645)-Amonatov,F (2637) Dagomys 2010}) 9... b5 10. Bb3 Na5 $146 ({Find the theoretical novelty and annotate with similar games:} 10... h6 11. f5 gxf5 12. Qg3 Rg8 13. Qh3 Nd4 14. Nxd4 cxd4 15. Ne2 Bb7 16. Ng3 fxe4 17. dxe4 {1-0 (67) Muelas Cerezuela,J (2104)-Valdes Romero,L (2372) Benidorm 2004}) 11. f5 {The position is equal.} gxf5 12. Bh6 (12. Qh5 $5 {[%cal Rf3g5]}) 12... Bxh6 13. Qxh6 Nxb3 14. axb3 {And now Ng5 would win.} Bb7 $1 15. Ng5 $36 {[%mdl 2048] aiming for Qf6. White has some pressure.} Ng8 $2 (15... Kd7 $11 {and Black has nothing to worry.}) 16. Qg7 $18 {[%csl Gg5][%cal Rg7f7] [#]} Qf6 17. Nxe6 $1 Ke7 18. Rxf5 Qxe6 $2 (18... Qxg7 {was worth a try.} 19. Nxg7 Nh6) 19. Raf1 {[%cal Rf5f7]} ({Not} 19. Qxh8 Nh6 $16) 19... Nh6 (19... Rf8 $142 20. Qxh8 Nh6 21. Qf6+ Qxf6 22. Rxf6 Ng4) 20. Rf6 Qe5 21. Qxh6 (21. Rxf7+ $142 Nxf7 22. Qxf7+ Kd8 23. Qxb7) 21... Raf8 22. Qg7 (22. R1f5 $142 Qd4+ 23. Kh1) 22... Qd4+ (22... Ke8 $142 23. Qh6 b4) 23. Kh1 {[%cal Rf6f7]} Ke8 24. Qg3 Rhg8 (24... Qe5 $142 25. Qxe5+ dxe5) 25. Qxd6 $2 {[#]} (25. Qh3) 25... Qxd6 26. Rxd6 f5 {Now ...fxe4 and Black clings on.} 27. Re1 Rf7 $2 (27... fxe4 {might work better.} 28. Nxe4 Ke7) 28. exf5+ Re7 29. Rxe7+ Kxe7 30. Ne4 Bxe4 31. Re6+ Kf7 32. Rxe4 Kf6 33. g4 {Precision: White = 46%, Black = 38%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Gokerkan, Cem Kaan"]
[Black "Shyam, Sundar M"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2357"]
[BlackElo "2547"]
[Annotator "TA"]
[PlyCount "28"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,28,11,40,37,58,26,39,35,47,10,16,30,8,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 O-O 6. O-O d6 7. Bg5 Bb6 (7... h6 $5 {[%cal Rh6g5]} 8. Bh4 g5 $11) 8. Nbd2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} Ne7 9. Nh4 (9. Bxf6 $5 gxf6 10. d4 $14) 9... c6 $146 ({Predecessor:} 9... Bg4 10. Qe1 Kh8 11. Kh1 Nh5 12. h3 Bd7 13. Qe2 Nf4 14. Bxf4 exf4 15. Nhf3 Ng6 {1-0 (47) Tiviakov,S (2623)-Van den Doel,E (2591) Leiden 2010}) 10. Bb3 {White is slightly better.} d5 11. Qf3 (11. Bxf6 $5 gxf6 12. Qf3 $14) 11... Qd6 12. Rae1 h6 13. Be3 Bc7 14. Qg3 Nh5 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Pershin, Denis"]
[Black "Schroeder, Jan-Christian"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2353"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "28"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,28,0,7,0,7,0,0,0,0,0,0,-8,64,57,68,62,61,48,133,84,100]} 1. d4 Nf6 2. Nc3 d5 3. Bf4 a6 4. e3 e6 5. g4 h6 (5... c5 6. g5 Nfd7 7. Nf3 Nc6 8. a3 b5 9. h4 Bb7 10. h5 Nb6 11. Ne5 Nxe5 12. Bxe5 {1-0 (26) Carlsen,M (2832)-Caruana,F (2808) Stavanger 2017}) 6. Qf3 {D00: 1 d4 d5: Unusual lines} b5 $146 {[%cal Bb7b5,Bb5b4][%mdl 32]} ({Predecessor:} 6... b6 7. O-O-O Bb7 8. Nge2 Nbd7 9. h4 Bd6 10. Bg2 Bxf4 11. Nxf4 Qe7 {½-½ (46) Nadassy,A (2062)-Lukacs,A (1735) Budapest 2012}) 7. h4 {[%cal Bh2h4,Bh4g5][%mdl 32]} b4 8. Nce2 {The position is equal.} c5 9. g5 Ne4 10. Ng3 hxg5 (10... Bb7 $1 $11) 11. hxg5 $14 Rxh1 12. Qxh1 Nxg3 13. fxg3 Qa5 ({Black should try} 13... Qe7 $14) 14. Kf2 Nc6 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Van Osch, Mees"]
[Black "Vishnu Prasanna  V"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2349"]
[BlackElo "2538"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,114,54,40,82,80,61,55,58,68,66,46,35,52,110,0,0,-46,-37,-25,-15,-13,-14,-61,-36,-124,-53,-79,-2,-34,-37,-33,-8,-12,0,-22,0,0,16,-35,-24,-100,-95,-83,-63,-108,-79,-90,-71,-78,-74,-210,-202,-211,-201,-187,-185,-541,-514,-775,-766,-759,-769,-725,-662,-570,-234,-200,-213,-327,-321,-385,-386,-731,-720,-1106,-1088,-1122,-1103,-1129,-804,-1102,-1073,-950,-929,-12831,-9992,-12834,-12833,-12835,-12835,-12843,-12839,-12839,-12839,-12841,-12842,-12842,-12843,-12847,-12847,-12847,-12848,-12848,-12847]} 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Bf4 c6 {C41: Philidor Defence} (6... O-O 7. Qd2 Nc6 8. O-O-O Nxd4 9. Qxd4 a6 10. f3 b5 11. g4 c5 12. Qd2 b4 13. Nd5 Nxd5 14. exd5 Bf6 15. Bd3 Re8 16. Rhe1 Rxe1 17. Rxe1 {1-0 (32) Dominguez Perez,L (2739)-Noritsyn,N (2473) chess.com INT 2017}) 7. Qd2 {LiveBook: 3 Games} b5 8. a3 O-O {White is better.} 9. Be2 a5 10. O-O Re8 $146 ({Predecessor:} 10... Nbd7 11. Nxc6 Qe8 12. Nxe7+ Qxe7 13. Bxd6 Qxd6 14. Qxd6 Ne8 {1-0 (28) Balshaw,A (2114)-Gosling,D ICCF email 2009}) 11. Rfe1 Bf8 12. Bf3 Ra6 (12... Ng4 $14) 13. b4 (13. e5 $16 dxe5 14. Bxe5 (14. Rxe5 Rxe5 15. Bxe5 c5 $16)) 13... Nbd7 $11 14. Nb3 axb4 15. axb4 Ne5 16. Rxa6 Bxa6 17. Ra1 {Black must now prevent Bxe5.} Bc8 18. Ra8 ({Better is} 18. Qd1 $15) 18... Nfd7 ({Black should play} 18... Nxf3+ $17 19. gxf3 Qd7) 19. Be2 Qc7 (19... Nb6 $17 20. Ra7 Nbc4) 20. Bg3 Nb6 21. Ra1 g6 (21... Nec4 $5 {[%cal Rc4d2]} 22. Qf4 h6 $15) 22. Na5 Be6 23. Nd1 f5 24. exf5 gxf5 25. Qg5+ (25. Bh5 $11 Ra8 26. Nc3) 25... Ng6 {Threatens to win with ...Nd5.} 26. Bd3 {[#]} (26. Ne3 $11) 26... Qg7 $1 $17 {[%cal Rg7a1]} 27. c3 Bd7 {Hoping for ...Nd5.} 28. Qd2 f4 {aiming for ...Qe5.} 29. Bxg6 Qxg6 30. Bxf4 Nd5 31. Bg3 {[#]} (31. f3 $17 {is the only way for White.}) 31... Bh6 $1 $19 {[%cal Rh6d2]} 32. f4 Qf6 $40 {[%mdl 128] Black has strong attack.} 33. Nf2 Nxf4 34. Bxf4 $2 (34. Kh1) 34... Bxf4 ({Not} 34... Qxf4 35. Qxf4 Bxf4 36. g3 $17) 35. Qd4 (35. Qd3 $142 Qh6 36. g3) 35... Qh6 36. g3 Be3 37. Qh4 Qxh4 38. gxh4 Rf8 (38... Bh3 $142 {( -> ...Kh8)} 39. Re1 Kf7) 39. Ra2 Bb6 40. Kg2 (40. Kf1 {was worth a try.}) 40... Be6 41. Re2 Bd5+ 42. Kf1 $2 (42. Kg1) 42... Bxa5 {Black is clearly winning.} 43. bxa5 {[%mdl 4096] Endgame KRB-KRN} Bc4 44. Ke1 Bxe2 45. Kxe2 {KR-KN} Rf4 46. Ke3 Ra4 47. Ne4 Rxa5 48. Nxd6 Ra4 49. Nf5 Kf7 50. h5 Kf6 51. Nd4 Rc4 52. Kd3 h6 53. h4 Ke5 54. Nf3+ Kd5 55. Nd4 {[#]} Rxd4+ $1 {[%mdl 512]} 56. cxd4 b4 57. Ke3 Kc4 {Precision: White = 31%, Black = 68%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Tokranovs, Dmitrijs"]
[Black "Bailet, Pierre"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2340"]
[BlackElo "2536"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,96,-23,-14,-12,-37,-33,-46,-40,-50,-43,-28,-24,-40,-8,-8,-18,-19,0,-123,-117,-141,-138,-105,-124,-235,-120,-118,-106,-124,-127,-115,-105,-122,-127,-105,-110,-147,-149,-182,-114,-135,-142,-269,-192,-220,-175,-327,-195,-180,-152,-204,-136,-97,0,0,0,-6,0,-8,0,-8,-8,-8,-12,-66,0,0,8,8,0,8,353,240,227,243,330,458,1181]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3 Nxe4 5. Nxe4 d5 6. Bd3 dxe4 7. Bxe4 Bd6 8. d4 exd4 9. Bxc6+ bxc6 10. Qxd4 O-O 11. Be3 {LiveBook: 3 Games. C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack} Be6 12. a3 $146 ({Predecessor:} 12. O-O Bd5 13. Ng5 f5 14. Nh3 Re8 15. Bg5 Qb8 16. Rfe1 Qb6 17. Qxb6 cxb6 18. Bf4 Bc5 {0-1 (59) Koch,J (2507)-Adams,M (2746) France 2001}) 12... Re8 13. O-O-O {Black is slightly better.} Bd5 14. Rhe1 Re4 15. Qd3 Rg4 16. Nd4 Bxg2 17. f3 Rg6 $1 18. Nxc6 Qf6 19. Nxa7 (19. Bd4 $1 $11 {remains equal.} Bf4+ 20. Be3) 19... h6 $17 20. Rd2 Qxf3 ({Much weaker is} 20... Bxf3 $6 21. Rf1 $11) 21. Nb5 {[%cal Rb5d6]} Bxh2 22. Rf2 (22. Kb1 $17) 22... Qh5 (22... Qh3 $1 $19 23. Rfe2 h5) 23. Rxg2 Rxg2 24. Qe4 Rb8 25. Qxg2 Qxb5 $40 {[%mdl 128] Black attacks with force.} 26. Bd4 {[%csl Gd4][%cal Rg2g7] [#]} Qg5+ $1 27. Qxg5 hxg5 {[%mdl 4096] Endgame KRB-KRB} 28. c4 Rd8 29. Bc3 f6 (29... g4 $19 30. b4 f5) 30. a4 g4 {[%cal Bg5g4,Bg4g3][%mdl 32]} 31. a5 (31. Re2 $17 Bd6 32. b4) 31... c5 32. Kc2 Kf7 33. b4 $2 (33. a6 {might work better.}) 33... cxb4 (33... g3 $142 {Threatens to win with ...g2.} 34. Re2 cxb4 35. Bxb4 f5) 34. Bxb4 $19 Be5 35. Kb3 (35. Bc3 $17) 35... g3 36. Bc5 Rb8+ (36... Re8 $17 37. a6 Ke6) 37. Ka4 $1 $11 Rc8 38. Kb4 Bf4 39. Kb5 Bd2 40. Re7+ Kg6 41. Bb6 $1 f5 {...f4 is the strong threat.} 42. Rd7 (42. a6 $1 $11) 42... Be1 (42... Bg5 $15 43. a6 f4) 43. Rd1 Bf2 {Hoping for ...f4.} 44. c5 f4 45. c6 {aiming for Bxf2.} f3 $2 {[%mdl 8192]} (45... Kf5 $1 $11) 46. Bxf2 $18 gxf2 47. Kb6 Rb8+ {[#]} 48. Ka7 $1 {[%cal Ra7b8]} Rb2 {[%mdl 32768] Precision: White = 39%, Black = 50%. . An unexpected result.} (48... Rh8 $142 49. a6 Kf5) 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Badelka, Olga"]
[Black "Dastan, Muhammed Batuhan"]
[Result "1/2-1/2"]
[ECO "A10"]
[WhiteElo "2335"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,86,30,23,21,23,28,16,56,54,53,55,50,53,68,66,95,102,160,132,119,118,141,133,143,123,132,68,85,57,59,58,80,79,73,59,96,86,114,53,80,53,56,54,45,45,82,75,86,63,60,65,72,8,4,8,7,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 5. d3 {[%cal Bd2d3,Bd3d4,Bd4d5][%mdl 32]} d6 6. e4 c6 7. Nge2 O-O 8. O-O e5 9. exf5 Bxf5 {A21: English Opening: 1...e5 2 Nc3} 10. d4 (10. h3 Na6 11. Be3 Kh8 12. Qd2 Qd7 13. Kh2 d5 14. cxd5 cxd5 15. d4 e4 16. Rac1 Rac8 17. b3 {½-½ (29) Nevednichy,V (2554)-Guseinov,G (2613) Tromsoe 2014}) 10... Na6 11. h3 Nb4 12. g4 Be6 13. a3 Na6 14. d5 Bd7 $146 ({Predecessor:} 14... cxd5 15. Nxd5 Nxd5 16. Bxd5 Nc7 17. Bxe6+ Nxe6 {1-0 (58) Rohrmueller,U (2233)-Bintakies,M (2206) Bayern 2014}) 15. Bg5 h6 16. Be3 h5 (16... cxd5 $142 17. Bxd5+ (17. cxd5 g5 $14) (17. Nxd5 Bc6 $16) 17... Nxd5 18. Qxd5+ Rf7) 17. dxc6 Bxc6 18. Ng3 {[%cal Rg4h5]} Bxg2 19. Kxg2 {[%cal Rg4h5]} hxg4 20. hxg4 Qd7 21. Nce4 ({White should play} 21. g5 $16 Ng4 22. Qd5+ Rf7 23. Nb5) 21... Nxg4 22. Qxd6 Qxd6 ({But not} 22... Qf7 $2 23. Ng5 $18) 23. Nxd6 Nc7 24. Nge4 b6 25. b4 Ne6 26. Rad1 Rab8 27. Bc1 (27. Rg1 $16) 27... Nh6 28. c5 (28. Rg1 {is more complex.} Nf5 29. Kf1 Ne7 30. Rd3 Rbd8 31. Bg5) 28... bxc5 29. Nxc5 Nxc5 30. bxc5 {Black must now prevent c6.} Rb3 31. Bxh6 Bxh6 32. Ne4 {Threatens to win with c6.} Rxa3 33. Rd6 Ra4 34. Rxg6+ (34. Re1 $16) 34... Kf7 $1 $132 {[%cal Rf7g6][%mdl 2048] The position is equal. Black is not keeping still} ({Reject} 34... Kh7 $6 35. Rg4 $16) 35. Rxh6 Rxe4 {[%mdl 4096] Endgame KRR-KRR} 36. Ra1 Kg7 37. Rha6 (37. Raa6 {keeps more tension.} Rc4 38. Rhg6+ Kh7 39. Rge6 Rg8+ 40. Kf3) 37... Rg4+ 38. Kf1 Rc4 39. Rxa7+ Kg6 40. R1a6+ Kf5 41. c6 Rc8 42. Ra8 Rxa8 43. Rxa8 Rxc6 {Precision: White = 64%, Black = 62%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Zarubitski, Viachaslau"]
[Black "Sulskis, Sarunas"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "2319"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,96,58,48,50,35,39,38,41,43,42,34,39,37,36,46,43,49,40,41,37,47,43,40,45,39,39,41,39,16,14,0,0,0,0,0,0,0,0,-55,-48,-44,-52,-137,-135,-134,-127,-146,-141,-143,-138,-141,-145,-140,-135,-250,-256,-285,-202,-275,-177,-179,-179,-233,-223,-275,-270,-449,-452,-423,-446,-452,-427,-494,-460,-507,-547,-639,-636,-598,-583,-2311,-2102,-7649,-6203,-29962,-918,-29979,-29967]} 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Nf3 Bg4 6. h3 Bh5 {B01: Scandinavian Defence} 7. g4 Bg6 $1 8. Ne5 Nbd7 $1 {[%cal Rd7e5] White is slightly better.} 9. Nxg6 hxg6 10. Bg2 c6 11. d5 (11. Qd3 e6 12. Bd2 Nb6 13. O-O-O Nbd5 14. Ne2 {1-0 (39) Bologan,V (2640)-Kovalenko,I (2684) Tallinn 2016}) 11... Nxd5 12. Nxd5 cxd5 13. Qxd5 Qxd5 14. Bxd5 Nc5 $146 15. Be3 e6 16. Bg2 O-O-O 17. Ke2 Na4 18. Rad1 {Black must now prevent Bxb7+!} Bc5 19. Bxc5 (19. Rxd8+ {feels hotter.} Rxd8 20. Bc1 Bd4 21. c3 Be5 22. h4) 19... Nxc5 20. f4 Na4 21. Rd3 Rxd3 22. cxd3 $11 {[%mdl 4096] Endgame KRB-KRN} Kb8 23. Kd2 Rd8 24. b3 (24. Ke3 $11) 24... Nc5 $15 25. Bf1 $1 Ne4+ 26. Kc2 ({White should play} 26. Ke3 $15 Nc3 27. Rh2) 26... Rc8+ $17 27. Kb2 Nf2 28. Rg1 Nd1+ 29. Kb1 Ne3 30. Bg2 Rc2 31. Be4 {Re1 is the strong threat.} Rf2 32. Re1 (32. Rc1 $17) 32... Nc2 $19 33. Rc1 Na3+ 34. Ka1 Rxf4 35. Kb2 Nb5 36. Rc2 (36. a4 $142 Nd4 37. Re1) 36... Nd4 37. Rc4 Rf2+ 38. Kc3 $2 (38. Kb1 {was worth a try.} Nb5 39. Rc5) 38... e5 39. Rc5 f6 40. Rd5 Kc7 41. Bxg6 {Now Be8 and White clings on.} a5 {[%csl Gd4][%cal Rf2c2]} 42. Rxd4 exd4+ 43. Kxd4 Rxa2 {KR-KB} 44. h4 a4 45. bxa4 Rxa4+ 46. Kd5 Rxg4 47. h5 {[#]} b5 (47... Rxg6 $142 $1 48. hxg6 Kd7 49. d4 b6 50. Ke4 b5 51. Ke3 f5 52. Kd3 Kd6 53. Kc3 Kd5 54. Kd3 b4 55. Ke3 {[#]} f4+ $1 {[%mdl 512]} 56. Kd3 f3 57. Kd2 Kxd4 58. Kd1 b3 59. Kc1 f2 60. Kd2 f1=R 61. Ke2 Rf8 62. Kd2 Rf2+ 63. Kd1 b2 64. Ke1 Rh2 65. Kf1 b1=Q#) 48. Ke6 b4 {Precision: White = 42%, Black = 88%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Zaiatz, Elena"]
[Black "Godena, Michele"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2316"]
[BlackElo "2517"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,79,-21,-21,0,-15,-1,0,0,-6,-8,-25,-20,-13,-8,-17,-10,-11,16,-12,18,0,3,6,16,23,22,0,4,-2,-7,-15,-6,-6,0,-16,-15,-17,-25,-30,0,0,0,0,0,-2,0,0,0,0,0,-10,20,8,102,95,98,114,112,0,80,89,95,91,98,98,100,100,105,100,104,106]} 1. Nf3 d5 2. g3 Nc6 3. Bg2 e5 4. c4 (4. O-O e4 5. Ne1 Nf6 6. d3 Bf5 7. c3 Qd7 8. Bg5 O-O-O 9. dxe4 dxe4 10. Qxd7+ Rxd7 11. Bxf6 gxf6 12. Nc2 Kb8 {1-0 (41) Petrosian,T (2592)-Sadorra,J (2587) chess.com INT 2017}) 4... dxc4 5. Qa4 Bd6 6. Qxc4 {LiveBook: 3 Games. A07: Réti Opening: New York and Capablanca Systems} Nge7 (6... Be6 $5 {[%cal Re6c4]} 7. Qa4 Nge7 $15) 7. O-O O-O 8. d4 {The position is equal.} Be6 9. Qa4 exd4 $146 ({Predecessor:} 9... Bd7 10. dxe5 Nxe5 {½-½ (41) Shakirov,A (2055)-Chesnokov,G (2015) Dimitrovgrad 2009}) 10. Nxd4 Nxd4 11. Qxd4 c6 12. Nd2 Nf5 13. Qc3 Qb6 14. Nf3 Qc5 (14... Be7 {looks sharper.} 15. Bg5 Rad8 16. Bxe7 Nxe7 17. e4 Rfe8) 15. Bd2 Qxc3 16. Bxc3 Bd5 17. Rfd1 {[#] Strongly threatening e4!} Rfe8 18. Rd2 (18. e4 $5 Bxe4 19. g4 Bxf3 20. Bxf3 $11) 18... Bc7 19. b3 Nd6 {next ...Ne4 is good for Black.} 20. Rc2 Be4 21. Rd2 Bd5 {White should prevent ...Ne4.} 22. Rc2 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 23. Rd1 a4 24. Nd4 Bxg2 25. Kxg2 Red8 26. Rb1 axb3 27. Rxb3 c5 28. Ba1 b6 29. Nc6 Re8 30. Be5 (30. Nb4 $5) 30... Ra6 31. Bf4 c4 (31... h6 $11) 32. Rb1 $16 b5 33. Nb4 Ra5 34. Nc6 Ra6 35. Nd4 {White is better.} Rea8 36. Bxd6 Bxd6 37. Nxb5 Bf8 38. Rxc4 Rxa2 39. Nd4 g6 40. e3 {Precision: White = 59%, Black = 44%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2"]
[White "Berzina, Ilze"]
[Black "Kollars, Dmitrij"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2308"]
[BlackElo "2514"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,109,0,0,0,0,0,0,0,0,0,0,5,15,21,64,58,62,44,68,55,65,57,48,57,58,62,116,75,207,204,194,164,180,169,164,152,151,143,155,150,194,196,186,179,197,188,228,219,353,349,360,337,282,178,178,178,178,178,178,178,178,178,178,178,178,178,178,178,178,178,233,87,92,62,72,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 b5 7. Bb3 d6 8. a4 b4 {LiveBook: 14 Games. C78: Ruy Lopez: Archangelsk and Möller Defences} (8... Rb8 9. axb5 axb5 10. Be3 Bxe3 11. fxe3 O-O 12. Nc3 Ne7 13. Nd5 Nfxd5 14. Bxd5 c6 15. Bb3 Ng6 16. Qe1 c5 17. Ra7 c4 18. dxc4 {1-0 (36) Smirin,I (2667)-Jones,G (2665) Wijk aan Zee 2017}) 9. a5 O-O 10. Bg5 {[%cal Bc1g5,Bg5h4,Bh4g3][%mdl 32]} h6 $146 ({Predecessor:} 10... Be6 11. Nbd2 h6 12. Bh4 g5 13. Bg3 Bg4 14. c3 bxc3 15. bxc3 Ne7 16. Qc2 {½-½ (24) Andersson,F (2225)-Husari,S (2362) Olomouc 2008}) 11. Bh4 g5 12. Bg3 Bg4 13. c3 bxc3 14. bxc3 Nh5 15. Bd5 Nxg3 16. hxg3 Bd7 17. d4 Ba7 18. dxe5 dxe5 19. Qe2 Qe7 20. Nbd2 {[%cal Bb1d2,Bd2c4,Bc4e3,Be3f5][%mdl 32]} Bc5 (20... Kg7 $14) 21. Nc4 Bd6 (21... Rab8 $16 {was worth a try.}) 22. Ne3 $18 Ra7 23. Nf5 Bxf5 24. exf5 Nb8 25. Nh2 {[%cal Bf3h2,Bh2g4,Bg4e3,Be3c4][%mdl 32]} Nd7 26. Ng4 $36 {[%mdl 2048] White is in control.} Kg7 27. Bc6 f6 28. Ne3 Nb8 29. Bd5 Bc5 30. Nc4 Rd8 31. Rad1 c6 (31... Qe8 $142 32. Be6 Nc6) 32. Be6 Rxd1 33. Rxd1 Nd7 34. Rxd7 Rxd7 35. Qh5 {[#] Qg6+ would kill now.} Kf8 36. Bxd7 ({Worse is} 36. Qxh6+ Qg7 $17) 36... Qxd7 37. Qxh6+ Ke8 38. Qh8+ ({And not} 38. Qxf6 Qd1+ 39. Kh2 Qh5+ 40. Kg1 Qd1+ 41. Kh2 Qh5+ 42. Kg1 Qd1+ $11) 38... Ke7 39. Qg7+ Ke8 40. Qxd7+ ({Stronger than} 40. Qxf6 Qd1+ 41. Kh2 Qh5+ 42. Kg1 Qd1+ 43. Kh2 Qh5+ 44. Kg1 Qd1+ $11) 40... Kxd7 {[%mdl 4096] Endgame KB-KN} 41. Kf1 Be7 42. f3 c5 {[#]} (42... Ke8 {was called for.} 43. Ke1 Bd8) 43. Ke2 (43. Nb6+ $1 $18 {and the rest is easy.} Kc6 44. c4) 43... Kc6 $16 44. Kd3 Kb5 45. Ne3 ({White should play} 45. g4 $16) 45... Bd8 $11 {The position is equal.} 46. c4+ Kxa5 {...Kb4 is the strong threat.} 47. Nd5 {Threatens to win with Kc2.} Ka4 {Strongly threatening ...Kb3.} 48. Kc2 Ka3 $1 49. Kc3 a5 50. Kc2 a4 51. Kc3 Ka2 {aiming for ...Kb1.} 52. Kc2 $1 Ka3 $1 53. Kc3 Ka2 {And now ...Kb1 would win.} 54. Kc2 $1 Ka3 $1 55. Kc3 {Precision: White = 78%, Black = 58%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2.3"]
[White "Smirin, Ilia"]
[Black "Tomazini, Zan"]
[Result "1-0"]
[ECO "B72"]
[WhiteElo "2634"]
[BlackElo "2395"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,93,22,26,21,13,22,15,18,29,35,27,31,97,89,131,118,159,133,120,122,139,97,91,94,89,99,83,87,87,94,89,19,189,200,175,118,112,121,165,37,35,0,0,0,82,73,120,119,122,114,138,147,185,183,191,191,179,179,270,278,335,331,330,315,327,275,412,393,387,391,450,455,551,557,587,596,812,808]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 a6 7. Be2 Nbd7 {B92: Sicilian Najdorf: 6 Be2} (7... Bg7 8. Qd2 Nbd7 9. g4 d5 10. exd5 Nb6 11. O-O-O Bxg4 12. f3 Bd7 13. Nb3 Nc8 14. Ne4 Nd6 15. Nbc5 O-O 16. Nxf6+ Bxf6 {½-½ (58) Eljanov,P (2755)-Jobava,B (2713) Malmo 2017}) 8. O-O Bg7 9. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} b6 {LiveBook: 4 Games. The position is equal.} 10. Nd5 $146 ({Find the theoretical novelty and annotate with similar games:} 10. Qd2 Bb7 11. f3 Rc8 12. Rfd1 O-O 13. Nb3 {1-0 (34) Simacek,P (2470)-Danielsen,H (2526) Pardubice 2008}) 10... Bb7 11. Nxf6+ Nxf6 12. f3 e5 13. Nb3 d5 14. a5 d4 (14... b5 $1 $14) 15. Bf2 $36 {[%mdl 2048] White is in control.} b5 16. c3 $1 dxc3 17. Qxd8+ Rxd8 18. bxc3 Nd7 19. Rfd1 Rc8 20. c4 bxc4 21. Nd2 c3 22. Nc4 {Black must now prevent Rdb1.} Bh6 23. Ra2 Ke7 24. Be1 ({White should play} 24. Bh4+ $1 $16 f6 25. Be1) 24... Rxc4 $2 (24... Bc6 $1 $11) 25. Bxc4 $18 Rc8 26. Bb3 ({Better is} 26. Bd3 $1 $18) 26... Nc5 $16 27. Bc2 $1 Ne6 28. Rb1 ({White must play} 28. Kf2 $1 $18) 28... Be3+ $14 29. Bf2 (29. Kf1 {looks sharper.} Ba8 30. Bh4+ f6 31. Bf2 Bd4 32. Bd3) 29... Bxf2+ 30. Kxf2 Rc7 (30... Bc6 $11 {remains equal.}) 31. Bd3 Nd4 32. Ra4 $1 c2 33. Rc1 Rc3 {[#]} 34. Ke3 $1 Rb3 {[#]} 35. Kd2 $1 Bc6 36. Ra2 Bb5 37. Bxc2 Nxc2 (37... Rb4 {was necessary.} 38. Raa1 Ne6) 38. Rcxc2 $18 {[%mdl 4096] Endgame KRR-KRB} ({But not} 38. Raxc2 Kf6 $18) 38... f5 39. exf5 gxf5 40. Rc7+ Kd6 41. Rxh7 Rd3+ (41... Kd5 $142 42. Kc2 Re3) 42. Kc1 Rc3+ 43. Rc2 Ra3 44. Rd2+ {White is clearly winning.} Ke6 45. Rh6+ Kf7 46. Rdd6 e4 47. Rh7+ {Precision: White = 75%, Black = 44%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2.18"]
[White "Kunin, Vitaly"]
[Black "Krykun, Yuriy"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2551"]
[BlackElo "2350"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,96,-44,-30,-37,-41,-44,-54,-17,-24,20,10,25,17,19,14,35,37,29,35,57,57,55,16,75,22,36,0,81,0,24,22,20,20,95,132,326,328,467,467,457,462,458,455,457,453,456,452,443,447,447,439,412,424,411,402,462,435,426,404,403,400,467,422,408,405,495,508,506,491,450,352,497,482,478,469,1260,1239,29996,29996,29999]} 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 O-O 5. e4 d5 6. e5 Ne4 7. Be3 c5 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} 8. c3 Nc6 9. Be2 cxd4 10. cxd4 {LiveBook: 5 Games} f6 11. exf6 exf6 12. O-O Bg4 (12... f5 {looks sharper.} 13. Nb3 a5 14. Rc1 g5 15. h3 f4) 13. h3 {[#]} Nxd2 $146 (13... Bxf3 {seems wilder.} 14. Nxf3 f5 15. Qd3 Rc8 16. Rad1 Re8) ({Find the theoretical novelty and annotate with similar games:} 13... Bxf3 14. Nxf3 f5 15. Bb5 {0-1 (50) Zupe,M (2323)-Jankovic,A (2535) Ljubljana 2012}) 14. Qxd2 Bf5 15. Rac1 Rc8 16. Rc5 b6 17. Rc3 {Strongly threatening Ba6.} Ne7 18. Rfc1 Qd7 19. Ba6 Rxc3 20. Rxc3 Qa4 (20... g5 $11 {keeps the balance.}) 21. Ra3 (21. Qe2 $16) 21... Qd7 $11 22. Rc3 Qa4 {[#]} 23. Ra3 (23. Qe2 $1 $16) 23... Qd7 24. Qe2 Qd6 25. Rc3 Bc8 (25... Re8 $11) 26. Bxc8 $16 Rxc8 $2 {[#]} (26... Nxc8 $16 27. b3 Re8) 27. Bf4 $1 $18 {[%cal Rf4d6][%mdl 512]} Qxf4 (27... Qd7 $142 28. Qxe7 Qxe7 29. Rxc8+ Bf8) 28. Qe6+ ({Weaker is} 28. Qxe7 Rxc3 29. Qe6+ (29. bxc3 Bf8 $11) 29... Kf8 $14) 28... Kf8 29. Rxc8+ Nxc8 30. Qxc8+ Ke7 31. Qb7+ Kf8 32. Qa8+ Ke7 33. Qxa7+ Kf8 34. Qa8+ Ke7 35. Qb7+ Kf8 36. Qxb6 Qc1+ 37. Kh2 Qf4+ 38. Kh1 Qc1+ 39. Ng1 f5 40. Qd8+ Kf7 41. Qxd5+ Ke7 42. Qb7+ Kf8 43. Qb4+ Kf7 44. b3 Qb2 (44... Qa1 {is a better defense.} 45. d5 Bd4) 45. Qc4+ Kf8 46. Nf3 Qxf2 (46... Bh6 $142 47. Qc8+ Kg7 48. Qb7+ Kg8 49. Qd5+ Kg7 50. Qe5+ Kg8 51. Qd5+ Kg7 52. Qb7+ Kh8 53. Qb8+ Kg7 54. Qe5+ Kg8 55. Qd5+) 47. Qc8+ Kf7 48. Ng5+ Kf6 {Precision: White = 76%, Black = 33%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2.20"]
[White "Sanal, Vahap"]
[Black "Tomilova, Elena"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2539"]
[BlackElo "2346"]
[Annotator "TA"]
[PlyCount "123"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,123,31,33,62,15,8,12,21,15,8,3,4,3,9,16,12,13,35,44,37,39,48,37,128,116,129,118,233,189,186,191,190,187,184,188,160,160,193,21,20,23,34,0,75,60,63,20,25,0,10,0,8,0,12,12,12,0,8,8,8,8,8,0,0,0,0,0,55,0,55,55,55,55,55,55,55,55,55,55,12835,12836,12842,12837,12837,12837,12838,12838,12839,12839,12839,12840,12840,12841,12841,12841,12842,12842,12843,12843,12843,12844,12844,12845,12846,12846,12850,12850]} 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Nf3 g6 (5... c6 6. Ne5 Nbd7 7. Nc4 Qc7 8. a4 Nd5 9. Bd3 g6 10. Qf3 N7f6 11. Nxd5 Nxd5 12. O-O Bg7 13. c3 O-O 14. Qg3 Qxg3 15. hxg3 {½-½ (28) Caruana,F (2808)-Carlsen,M (2857) Baku 2016}) 6. Nb5 {B01: Scandinavian Defence} Qb6 7. c4 c6 8. Nc3 Bg7 9. Be2 O-O 10. O-O {LiveBook: 24 Games} Bg4 11. h3 Bxf3 $1 12. Bxf3 Rd8 13. Qb3 {[#]} Qxb3 $146 14. axb3 Rxd4 15. Be3 Rd8 16. Rxa7 Rxa7 17. Bxa7 Nfd7 18. Rd1 {Bxb8 is the strong threat.} Re8 19. b4 {[%cal Bb3b4,Bb4b5][%mdl 32]} f5 20. b5 Nf8 (20... Ne5 $14) 21. Na4 $1 $16 Ne6 22. b4 $36 {[%mdl 2048] Black is under strong pressure.} Ng5 (22... Kf7 $16 23. Nc5 Nxc5 24. Bxc5 (24. bxc5 e5 $11) 24... Rc8) 23. Nc5 Nxf3+ 24. gxf3 cxb5 25. cxb5 Bc3 26. Nxb7 Bxb4 27. Rd4 Bc3 28. Rd8 $2 ({Better is} 28. Rc4 $18 Bb2 29. Na5) 28... Rxd8 $11 29. Nxd8 {[%mdl 4096] Endgame KBN-KBN} Nd7 30. Nc6 Ne5 {[#]} (30... Kf7 $11) 31. f4 $1 $16 {[%cal Rf4e5]} Nc4 $1 32. Nxe7+ Kf7 33. Nd5 Ba5 34. Bc5 {Strongly threatening b6.} (34. b6 $5 {[%cal Rb6b7]} Nd6 35. Kg2 $11) 34... Ke6 35. Ne3 Bb6 36. Nxc4 Bxc5 $11 {KB-KN} 37. Kg2 Kd5 38. Ne5 Bd4 39. Kg3 g5 {[%cal Bg6g5,Bg5f4][%mdl 32]} 40. Nf7 gxf4+ 41. Kf3 Bb6 42. h4 {[%cal Bh3h4,Bh4h5][%mdl 32]} (42. Ng5 $5 {[%cal Rg5h7]} h6 43. Nh7 $14 (43. Nf7 Ke6 $11)) 42... Bc7 (42... h5 $11) 43. Ng5 (43. h5 $1 $14 h6 44. Nh8 (44. Nxh6 Ke6 $11)) 43... h6 ({Black should play} 43... h5 $11) 44. Nh3 $1 $14 Kc5 45. Nxf4 {Black must now prevent Ne6+.} Kxb5 46. Nd5 Bd8 47. h5 $1 {Threatens to win with Ne3.} Bg5 48. Ne3 f4 $2 {[%mdl 8192]} (48... Kc5 $14) 49. Nd5 $18 {White is clearly winning.} Kc5 50. Nxf4 Kd6 {[#]} 51. Ke4 $1 {[%cal Re4f5]} Ke7 52. Kf5 Kf7 53. Ng6 Bd2 54. Ne5+ Kg7 55. Ke6 Bc1 56. Ng6 Bb2 57. f4 {[%cal Bf2f4,Bf4f5,Bf5f6][%mdl 32]} Bc3 58. f5 Bb2 59. Nf4 Bf6 60. Nd5 Bg5 61. f6+ Kf8 62. Ne7 {Precision: White = 63%, Black = 46%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2.22"]
[White "Zakhartsov, Viacheslav V"]
[Black "Zatonskih, Anna"]
[Result "1-0"]
[ECO "D58"]
[WhiteElo "2539"]
[BlackElo "2424"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,91,25,0,0,0,0,-8,3,0,32,4,2,11,12,0,16,-8,98,62,68,77,130,102,93,96,97,102,106,80,79,79,79,71,67,77,94,67,127,98,170,152,217,241,423,432,439,432,416,402,402,406,389,345,316,317,762,759,793,540,993,868,2222,2014,5289,5289]} 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 O-O 6. e3 h6 7. Bh4 b6 8. Be2 Bb7 9. Bxf6 Bxf6 10. cxd5 exd5 11. O-O Re8 12. b4 c6 13. Qb3 Qd6 14. Rfe1 {D58: Queen's Gambit Declined: Tartakower Defence} Nd7 15. Rad1 {LiveBook: 3 Games} a5 16. bxa5 {The position is equal.} Rxa5 17. a4 Be7 18. Rb1 Ba6 19. Bxa6 Rxa6 20. e4 dxe4 $1 {[#]} 21. Rxe4 $146 ({Find the theoretical novelty and annotate with similar games:} 21. Nxe4 Qg6 {1-0 (41) Karpov,A (2715)-Boensch,U (2490) Baden-Baden 1992}) 21... Nf6 22. Ne5 Rf8 (22... Qe6 $1 $11 23. Qxe6 fxe6) 23. Re2 $36 {[%mdl 2048] White is more active.} Bd8 24. Qc4 Ra7 (24... b5 $142 25. axb5 cxb5 26. Nxb5 Qe6) 25. Rc2 ({Much weaker is} 25. Nxc6 $6 Rc7 $14) 25... Rc7 26. Rxb6 Nd7 27. Nxd7 Qxd7 28. Ne2 {[%cal Rb6c6]} Re8 29. Kf1 Re6 30. g3 Rc8 31. Rb3 Rd6 32. Kg2 Bf6 (32... Ra8 $14) 33. Rb4 Rd8 {[#]} (33... Ra8 $16) 34. a5 $1 $18 {[%cal Ba4a5,Ba5a6,Ba6b7][%mdl 32]} Qa7 {[#]} (34... h5 $16) 35. a6 $1 R8d7 $2 (35... R6d7 {was worth a try.} 36. f3 (36. Qxc6 Rd6 $16) 36... Be7) 36. Rcb2 c5 37. Rb7 ({But not} 37. Rb8+ Kh7 $18) 37... Rxb7 38. axb7 Rb6 39. Rxb6 Qxb6 40. dxc5 Qc6+ 41. Kg1 Be5 $2 (41... Qxb7 42. c6 Qc8) 42. Qb4 {White is clearly winning.} Bb8 43. Nc3 Kf8 44. Qb5 Qc7 45. c6 Qd6 46. Nd5 {Precision: White = 75%, Black = 28%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2.26"]
[White "Ladva, Ottomar"]
[Black "Payen, Arnaud"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2532"]
[BlackElo "2337"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,119,13,17,20,0,-2,-4,13,13,13,13,13,14,8,8,16,4,10,8,14,10,20,0,17,18,11,18,80,76,66,64,66,66,98,95,103,98,104,82,131,112,118,122,134,140,156,146,154,102,234,189,329,269,308,267,356,351,408,399,590,637,640,570,954,951,892,869,945,941,2400,2374,1809,953,1201,1201,1154,1201,1103,1096,1096,1089,984,983,837,788,653,653,653,649,29951,8322,5114,5106,29984,29985,29971,29967]} 1. Nf3 e6 2. g3 f5 3. Bg2 Nf6 4. O-O d5 5. d4 Bd6 6. b3 Qe7 7. Bb2 c6 8. c4 b6 9. Ne5 Bb7 10. Nd2 {[%cal Bb1d2,Bd2f3,Bf3d4][%mdl 32]} O-O 11. Rc1 a5 12. Ndf3 Na6 {[%cal Bb8a6,Ba6c5,Bc5e4][%mdl 32] A90: Dutch Defence: Miscellaneous and Modern Stonewall (with ...Bd6)} 13. Nd3 {LiveBook: 18 Games} Rfd8 {[#]} 14. Qc2 $146 ({Predecessor:} 14. Nfe5 Rac8 15. e3 Ne4 16. f3 Nf6 17. g4 c5 18. g5 Nd7 19. f4 Bxe5 20. fxe5 Qxg5 {0-1 (52) Fridman,D (2628)-Nikolic,P (2646) Germany 2007}) 14... c5 {The position is equal.} 15. dxc5 Nxc5 16. Nd4 Rac8 17. Nb5 Nce4 18. Nxd6 Nxd6 19. Ne5 dxc4 20. Bxb7 Nxb7 21. bxc4 b5 22. Rfd1 Nd7 23. Qc3 (23. Rxd7 {feels hotter.} Rxd7 24. Nxd7 Qxd7 25. Qd3 Qxd3 26. exd3 b4 27. Kf1) 23... Nxe5 (23... b4 $5 {[%cal Rb4c3]} 24. Qb3 Nbc5 $11) 24. Rxd8+ Nxd8 25. Qxe5 bxc4 (25... Rc5 $1 $11 {remains equal.} 26. Qf4 b4) 26. Qxa5 $16 Nf7 27. Qa6 Qd7 $1 28. a4 Qc6 29. Qxc6 Rxc6 {[%mdl 4096] Endgame KRB-KRN} 30. f3 Nd6 31. Be5 Nf7 32. Bc3 Nd6 33. Kf2 Kf7 34. Ke3 Nb7 35. Bb4 e5 36. Kd2 (36. a5 $142) 36... g5 (36... Nd8 $16) 37. Kc3 Rh6 (37... Ke6 $142 38. Ra1 Nd6) 38. Rc2 Rxh2 39. Kxc4 Ke6 40. Kb5 e4 41. fxe4 f4 (41... Nd6+ $142 42. Kb6 Nxe4) 42. gxf4 $18 gxf4 43. Kb6 Nd8 44. Rd2 Nf7 45. a5 Ne5 46. a6 Nc4+ 47. Kb5 Nxd2 48. a7 Nxe4 49. a8=Q Rxe2 50. Qe8+ Kf6 51. Be7+ Ke5 52. Qh5+ Kd4 53. Bc5+ Kd3 54. Qf3+ Re3 55. Qf1+ Re2 56. Ba7 Nc3+ 57. Kb4 Kc2 58. Bd4 Na2+ 59. Kc4 Nc1 60. Qxf4 {Precision: White = 87%, Black = 30%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "2.29"]
[White "Rahul Srivatshav P"]
[Black "Ali Marandi, Cemil Can"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2321"]
[BlackElo "2526"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,119,31,39,45,45,44,41,0,16,13,91,85,63,-6,0,-45,13,-7,15,-2,0,0,0,0,0,-27,-4,-123,-67,-68,169,189,191,200,196,181,313,292,364,298,318,260,307,298,306,200,296,269,297,295,292,275,396,392,428,420,467,470,448,438,408,302,306,285,285,283,331,327,350,342,341,323,456,454,498,444,467,471,472,462,458,454,524,526,533,526,556,541,633,639,636,652,681,682,667,655,897,883,797,792,962,944,1660,1445,1993,1981,1884,1833,1779,1762]} 1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. f3 e6 5. e4 Be7 6. exf5 {A80: Dutch Defence: Unusual White second moves} (6. Qd2 O-O 7. O-O-O h6 8. Be3 fxe4 9. fxe4 Bb4 10. Bd3 dxe4 11. Bc4 Nc6 12. a3 Bxc3 13. Qxc3 {0-1 (32) Schenk,A (2491)-Pruijssers,R (2511) Germany 2015}) 6... exf5 {LiveBook: 4 Games} 7. Qd2 O-O 8. Nh3 {White is slightly better.} c6 9. Be2 h6 10. Be3 $146 ({Find the theoretical novelty and annotate with similar games:} 10. Bf4 b5 11. Nf2 Nh5 12. Bxb8 Rxb8 {1-0 (52) Vatter,H (2328)-Ritscher,J (2316) Halle 2010}) 10... Be6 (10... Bd6 $11) 11. Nf4 $16 Bf7 12. Nd3 (12. Bd3 $1 $14) 12... Nbd7 $11 13. Nd1 a5 ({Black should try} 13... Re8 $15) 14. N1f2 Ne8 15. a4 Nd6 {Hoping for ...Nc4.} 16. b3 Bf6 17. O-O Re8 {Strongly threatening ...Qe7.} 18. Rfe1 g5 {next ...f4 is good for Black.} (18... c5 $5 19. Bf4 Bxd4 $15) 19. Nd1 {[#]} (19. c3 $11) 19... f4 (19... c5 $1 $17 {[%mdl 512]} 20. Nxc5 Nxc5 21. dxc5 Bxa1 22. cxd6 Qxd6) 20. Bf2 $15 Ne4 $2 (20... Bg7 $15 {stays ahead.}) 21. fxe4 $18 dxe4 22. Nxf4 $1 gxf4 23. Qxf4 c5 (23... Bg5 $142 24. Qg3 Qb8) 24. Bb5 (24. Qxh6 Bg7 $16) 24... Bg5 25. Qf5 Re6 26. Rxe4 Rxe4 27. Qxe4 Nf6 28. Qd3 Nd5 (28... Ng4 $142 29. Bc4 (29. dxc5 Qxd3 30. Bxd3 Bf6 $16) 29... Qf6) 29. Bc4 Qf6 30. Bxd5 Bxd5 31. Nc3 ({Much less strong is} 31. dxc5 $6 Qxa1 32. Qxd5+ Kf8 $16) 31... Bc6 (31... Bf7 {might work better.} 32. Ne4 (32. dxc5 Bg6 $16) 32... Qf5 33. dxc5 Rd8) 32. Rf1 Qg7 33. Qc4+ Kh8 34. d5 Bd7 35. Bxc5 {And now Bd4 would win.} Rc8 {Threatens to win with ...Be3+.} 36. Qd4 Qxd4+ 37. Bxd4+ Kg8 38. Rf2 Re8 39. Kf1 Bg4 {If only Black now had time for ...Bh4....} 40. h3 Bh5 41. d6 Bh4 {[#]} (41... Re6 $142 42. Bc5 Be8) 42. g3 $1 {White is clearly winning.} Bd8 (42... Bxg3 43. d7) 43. Bf6 Bf7 44. Bxd8 Rxd8 {[%mdl 4096] Endgame KRB-KRN} 45. Nb5 Be8 46. Rd2 Bd7 47. g4 Kg7 48. Kf2 Kf6 49. Kg3 Ke5 50. c4 {[%cal Bc2c4,Bc4c5][%mdl 32]} Ke4 51. c5 Rc8 52. Nc7 Ke3 53. Rd1 Rf8 54. Nd5+ Ke2 55. Rd4 h5 56. Nb6 Rf3+ 57. Kh4 hxg4 58. hxg4 Bc6 59. d7 Bxd7 60. Rxd7 {Precision: White = 69%, Black = 30%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Nabaty, Tamir"]
[Black "Gusain, Himal"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2654"]
[BlackElo "2446"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,43,45,75,71,107,97,118,121,170,177,152,88,185,183,310,306,456,438,527,530,508,507,620,708,685,668,592,723,725,680,640,552,548,539,517,540]} 1. d4 d5 2. c4 e6 3. Nf3 c6 4. Bg5 f6 5. Bd2 (5. Bh4 dxc4 6. e4 b5 7. Be2 Bb4+ 8. Nc3 Ne7 9. O-O O-O 10. Qc2 Ng6 11. Bg3 f5 12. h4 Be7 13. h5 Nh4 14. Bxh4 Bxh4 15. a4 Ba6 16. axb5 cxb5 17. exf5 {1-0 (29) Laznicka,V (2651)-Vavra,P (2391) Czech Republic 2017}) 5... dxc4 6. e4 {D30: Queen's Gambit Declined: Systems without Nc3} b5 7. a4 a6 8. b3 $146 {White is better.} ({Find the theoretical novelty and annotate with similar games:} 8. axb5 cxb5 9. b3 a5 10. bxc4 b4 11. c5 Bb7 12. Bb5+ Bc6 {1-0 (26) Milare,T (1789)-Schauties,N (1691) Willingen 2017}) 8... c3 9. Nxc3 Bb7 10. g3 ({Much less strong is} 10. axb5 $6 cxb5 11. d5 Bc5 $16) ({White should try} 10. b4) 10... b4 (10... c5 $16) 11. Ne2 $18 {[%cal Bc3e2,Be2f4,Bf4e6][%mdl 32]} c5 (11... g5 {was worth a try.} 12. Bh3 Qe7) 12. Nf4 cxd4 (12... Bc8 $142 13. dxc5 Nc6) 13. Nxe6 {White is clearly winning.} Qe7 14. Bc4 Nc6 15. O-O Qd7 16. Bf4 Rc8 17. e5 Na5 {[%cal Bc6a5,Ba5c4,Bc4e3][%mdl 32]} 18. exf6 Nxc4 19. Re1 {[#] Black must now prevent Nc5+.} Ne3 20. fxg7 Bxg7 21. Nxg7+ Qxg7 22. Nxd4 {Precision: White = 83%, Black = 24%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Jumabayev, Rinat"]
[Black "Bakalchuk, Johnatan"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2610"]
[BlackElo "2394"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,67,12,2,58,46,54,7,73,74,92,86,99,88,82,89,87,97,141,138,136,132,159,150,153,170,175,139,156,162,156,147,151,137,147,141,124,135,204,200,293,292,395,378,389,379,361,354]} 1. Nf3 Nf6 2. d4 g6 3. g3 Bg7 4. Bg2 O-O 5. c4 d6 6. Nc3 Nc6 7. O-O Rb8 8. Bf4 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6} (8. d5 Na5 9. Nd2 c6 10. b4 Nxc4 11. Nxc4 Nxd5 12. Nxd5 Bxa1 13. Nf4 Bg7 14. e4 e5 15. Nd3 Be6 16. Qc2 {½-½ (33) Mamedyarov,S (2747)-Jones,G (2645) Reykjavik 2016}) 8... a6 9. Rc1 h6 10. h3 g5 11. Bd2 e5 12. d5 {LiveBook: 6 Games} Nd4 ({Black should try} 12... Ne7 $11) 13. Ne1 $14 g4 $146 ({Predecessor:} 13... b5 14. e3 Nf5 15. cxb5 axb5 16. Nd3 {1-0 (49) Ushenina,A (2438)-Sandu,M (2207) Reykjavik 2015}) 14. h4 c5 (14... Nh5 $11 {remains equal.}) 15. dxc6 $16 bxc6 16. e3 Ne6 17. Bxc6 Rxb2 18. Nd3 Rb8 19. Bg2 Nc5 20. Nxc5 dxc5 21. e4 Qd3 22. Nd5 Nxe4 23. Be3 Qxd1 24. Rfxd1 f5 25. Bxe4 fxe4 26. Bxc5 Rf7 27. Ne7+ Kh7 28. Nxc8 Rxc8 29. Be3 Rfc7 (29... Kg6 $16 {is a better defense.} 30. c5 Kf5) 30. c5 $18 Rc6 (30... h5 $142 31. Kg2 Kg6) 31. h5 Kg8 32. Rc4 {White is winning.} Kf7 33. Rxe4 Bf8 34. Rc1 {Precision: White = 93%, Black = 40%.} ({Weaker is} 34. Rxe5 Bxc5 35. Rd7+ Kf6 $18) 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Tregubov, Pavel V."]
[Black "D`Costa, Lorin A R"]
[Result "1/2-1/2"]
[ECO "E59"]
[WhiteElo "2593"]
[BlackElo "2390"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,98,22,12,8,-15,-13,-19,16,0,59,46,63,16,14,13,9,10,27,37,36,37,35,28,36,35,43,35,52,14,18,3,42,1,2,2,2,2,2,2,3,3,3,0,0,0,0,0,0,-56,-43,-80,-39,-76,-78,-68,-42,-67,0,-27,0,0,0,-58,-44,-243,-80,-350,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. a3 Bxc3+ 7. bxc3 dxc4 8. Bxc4 c5 9. Nf3 Nc6 10. O-O Qc7 11. h3 b6 {E58: Nimzo-Indian: Rubinstein: Main Line: 7...Nc6 8 a3 Bxc3} (11... e5 12. Bb2 Bf5 13. Ba2 Rad8 14. Qe2 Rfe8 15. d5 b5 16. c4 Na5 17. Nd2 Nxc4 18. Bxc4 bxc4 19. e4 Nxd5 20. exd5 {1-0 (33) Lenic,L (2659)-Iturrizaga Bonelli,E (2653) Tromsoe 2014}) 12. Qe2 Bb7 13. Bb2 Rad8 14. Rfd1 e5 ({Black should play} 14... Na5 $11) 15. Ba2 h6 $146 ({Find the theoretical novelty and annotate with similar games:} 15... Qe7 16. d5 Nb8 17. c4 Nbd7 18. Bb1 Ne8 19. Bf5 e4 20. Nd2 Nd6 21. Qg4 Ne5 22. Bxh7+ Kxh7 {1-0 (41) Van der Stricht,G (2403)-Tjiam,D (2386) Netherlands 2013}) 16. Nh4 Ne7 17. Rac1 Rfe8 18. Bb1 ({Wrong is} 18. Qc4 $2 Bd5 $19) 18... Be4 19. dxe5 Qxe5 20. c4 Qe6 21. Bxf6 gxf6 22. Bxe4 Qxe4 23. Qh5 Kg7 24. Kh1 Qe5 25. Qf3 f5 26. Qb7 Qe4 $132 {[%mdl 2048] Black puts up resistance} 27. Rxd8 Rxd8 28. Qxe7 Qxe7 29. Nxf5+ Kf6 30. Nxe7 Kxe7 $11 {[%mdl 4096] Endgame KR-KR} 31. Rc3 Rd2 32. Kg1 Kd6 33. g4 a6 34. h4 (34. Kf1 $11) 34... b5 $1 $15 35. cxb5 axb5 36. Kg2 c4 37. a4 Kc5 $1 {[#] aiming for ...b4.} 38. axb5 Kxb5 {White must now prevent ...Kb4.} (38... Kb4 $5 {[%cal Rb4c3]} 39. Rc1 Kxb5 $14) 39. Ra3 Rd7 {...Rc7 is the strong threat.} 40. Kf3 Kb4 41. Ra8 (41. Ra6 $11) 41... c3 {[%mdl 1024] Black has compensation.} 42. Rb8+ $2 {[#]} (42. Ke2 $15) 42... Ka3 $2 (42... Kc4 $19 {And now ...c2 would win.} 43. Ke2 Rd2+ 44. Ke1 Rb2) 43. Ke2 $2 {[%mdl 8192]} (43. Rc8 $17 Kb2 44. Ke2) 43... c2 $2 (43... Rd2+ $19 44. Ke1 Rb2) 44. Ra8+ {The position is equal.} Kb2 45. Rb8+ Ka2 46. Ra8+ Kb2 47. Rb8+ Ka3 48. Ra8+ Kb2 49. Rb8+ Ka2 {Precision: White = 44%, Black = 58%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Neiksans, Arturs"]
[Black "Das, Sayantan"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "2582"]
[BlackElo "2436"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,73,54,56,50,44,41,55,23,50,40,128,135,148,149,131,89,90,90,80,102,200,183,261,257,281,264,259,213,210,232,224,220,232,214,232,185,217,200,341,301,257,267,1181,1335,1295,1208]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. O-O Nbd7 8. Qc2 c6 9. Rd1 b6 10. Bf4 Bb7 11. Ne5 Nxe5 {E08: Closed Catalan: Main Line: 7 Qc2} (11... Nh5 12. Bd2 Nhf6 13. cxd5 cxd5 14. Nc6 Bxc6 15. Qxc6 Rc8 16. Qb5 Ne8 17. Qd3 Nd6 18. Nc3 Nf6 19. b3 Qd7 20. Rac1 Rfd8 21. Rc2 Nde4 22. Be1 {½-½ (22) Radjabov,T (2710)-Gelfand,B (2724) Moscow 2017}) 12. dxe5 Nd7 13. cxd5 cxd5 14. e4 Rc8 15. Nc3 dxe4 {LiveBook: 7 Games} 16. Bxe4 Bxe4 17. Qxe4 Qc7 {[#]} 18. Rac1 $146 ({Predecessor:} 18. Nb5 Nc5 19. Qf3 Qb8 20. b4 {1-0 (58) Jumabayev,R (2606)-Seirawan,Y (2620) Berlin 2015}) 18... Nc5 19. Qf3 Rfd8 (19... Rcd8 $14) 20. Nb5 $1 $16 {[%cal Rb5c7]} Qb8 21. b4 $1 {[%cal Rb4c5]} Na6 22. Rxc8 Qxc8 {[#]} 23. Rxd8+ $1 Qxd8 24. a3 $36 {[%mdl 2048] Keeping Black busy.} ({Much worse is} 24. Nxa7 $6 Nxb4 25. Nc6 Nxc6 $11) 24... Qb8 {[#]} (24... Nc7 $16 25. Nxa7 Bf8) 25. Qc6 $1 $18 Kf8 (25... h6 {was called for.} 26. Qd7 Qd8 27. Qxd8+ (27. Qxa7 Qd1+ 28. Kg2 Qd5+ 29. Kh3 Qxb5 $14) 27... Bxd8 28. Nxa7 Nc7) 26. Be3 g5 27. Qd7 Qd8 28. Qxd8+ Bxd8 29. Nxa7 {[%mdl 4096] Endgame KBN-KBN} Nb8 30. Kg2 g4 31. h3 h5 32. hxg4 hxg4 33. Kf1 Nd7 (33... Bc7 $142 34. Ke2 Ke8) 34. Nc6 Bc7 35. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} Bxe5 $2 (35... Ke8 36. a5 bxa5) 36. Nxe5 Nxe5 37. a5 {Precision: White = 95%, Black = 22%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Kulaots, Kaido"]
[Black "Bernotas, Arturs"]
[Result "1-0"]
[ECO "A18"]
[WhiteElo "2577"]
[BlackElo "2431"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,57,30,31,24,41,25,58,32,39,39,40,35,56,37,39,47,43,51,76,80,128,114,248,261,270,253,255,255,405,408,407,397,399,397,395,384,395,393,406,390,802,784,1291,642]} 1. c4 Nf6 2. Nc3 e6 {[%cal Be7e6,Be6d5][%mdl 32]} 3. e4 d5 4. cxd5 exd5 5. e5 Ne4 6. Nf3 Nc6 7. Bb5 Be7 {A18: English Opening: Flohr-Mikenas System (1 c4 Nf6 2 Nc3 e6 3 e4)} 8. O-O O-O {LiveBook: 4 Games} 9. d4 (9. Re1 Bf5 10. Bxc6 bxc6 11. Nd4 Bd7 12. Nxe4 dxe4 13. Rxe4 c5 14. Nf3 Bc6 15. Re3 {0-1 (41) Ding,L (2730)-Wang,Y (2711) Shenzhen 2014}) 9... Bf5 {White has an edge.} 10. Be3 f6 $146 ({Predecessor:} 10... Na5 11. Nxe4 dxe4 12. Nd2 a6 13. Be2 Nc6 14. Nb3 Nb4 15. Qd2 {½-½ (80) Karatekin,T (2280)-Demircioglu,E (2218) Konya 2015}) 11. Qa4 (11. Rc1 $5 {[%cal Rc3d5]}) 11... Nb4 12. Rac1 c6 13. Be2 a5 14. a3 Nxc3 15. Rxc3 Na6 16. Qb3 Qb8 17. Bf4 {aiming for exf6.} Qa7 18. Re3 Rac8 (18... Bg4 $16 {was called for.} 19. Rd1 Rae8) 19. Nh4 $18 Be6 {White should prevent ...fxe5.} 20. exf6 Bxf6 21. Rxe6 Bxh4 {[#]} (21... Qxd4 $142 22. Bd6 (22. Qxb7 Nc5 $11) 22... Bxh4) 22. Be5 $1 Bf6 23. Bxf6 Rxf6 24. Rxf6 gxf6 25. Qe3 Rf8 26. Bd3 {[#] And now Qe6+ would win.} Qb8 27. Qe6+ Kg7 $2 (27... Kh8 28. Qe7 (28. Qd7 Qc7 $16) 28... f5) 28. Qf5 {[%csl Gd3][%cal Rf5h7]} Rh8 29. Re1 {Precision: White = 74%, Black = 39%.} (29. Qd7+ $142 Kh6 30. Re1) 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Vorobiov, Evgeny E."]
[Black "Fruebing, Stefan"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2569"]
[BlackElo "2417"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,107,18,0,6,4,20,18,17,16,33,25,30,27,27,17,24,27,39,39,36,37,41,37,37,21,46,46,48,41,45,45,45,41,41,41,46,41,48,47,48,47,41,12,46,46,47,52,54,53,64,44,65,61,70,45,45,43,45,38,41,37,38,20,56,52,58,21,41,20,27,27,34,34,35,39,45,0,0,0,22,0,50,5,9,0,43,0,36,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. cxd5 Bxf3 6. Qxf3 cxd5 7. Nc3 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4} (7. Bd3 Nc6 8. O-O e6 9. a3 Be7 10. b4 O-O 11. Bb2 Qd7 12. Nd2 a5 13. b5 Na7 14. a4 Bb4 {½-½ (33) Wojtaszek,R (2741)-Giri,A (2793) Baku 2015}) 7... Nc6 8. Bd3 e6 9. O-O Be7 10. Rd1 O-O 11. Bf1 {LiveBook: 5 Games} Qd7 $146 ({Predecessor:} 11... Rc8 12. Bd2 Nd7 13. Na4 Bb4 14. Qe2 Bxd2 15. Qxd2 {½-½ (67) Vorobiov,E (2585)-Tate,A (2350) Pardubice 2017}) 12. Bd2 Ne8 13. Be1 Nd6 14. Qe2 f5 15. Na4 Bf6 16. Nc5 Qf7 17. Rac1 Rfc8 18. Rc2 Rc7 19. Rdc1 Rac8 20. Nd3 Qe7 21. b3 {[%cal Bb2b3,Bb3b4,Bb4b5][%mdl 32]} g6 22. a4 Kg7 23. Qd1 Kg8 24. b4 Nd8 25. b5 N8f7 26. Bb4 Rxc2 27. Rxc2 Qe8 28. Qc1 Rxc2 29. Qxc2 Qc8 30. Qc5 b6 31. Qc6 Be7 32. Ne5 Nd8 33. Qxc8 Nxc8 34. Bc3 Bd6 35. f3 Kg7 36. Kf2 Kf8 37. h4 Ke8 38. Bd3 Nf7 39. Nc6 Nd8 40. Nxd8 Kxd8 $14 {[%mdl 4096] Endgame KBB-KBN} 41. e4 Kd7 42. e5 Be7 43. Kg3 Ke8 44. Kh3 Kf7 45. g4 Ba3 46. h5 Ne7 47. hxg6+ hxg6 48. Bd2 Bb2 49. Be3 Bc3 (49... f4 $5 50. Bxf4 Bxd4 $14) 50. Kh4 Bb4 51. Kg5 Ng8 {[#] And now ...Be7+ would win.} 52. Kh4 Ne7 53. Kg5 Ng8 {Hoping for ...Be7+.} 54. Kh4 {Precision: White = 57%, Black = 45%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Ghosh, Diptayan"]
[Black "Agmanov, Zhandos"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2562"]
[BlackElo "2393"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,78,25,16,16,13,14,-70,23,16,16,16,22,14,16,16,16,10,17,0,0,0,0,0,0,0,3,0,4,2,5,4,7,5,5,0,10,13,8,9,12,8,8,9,10,10,9,10,10,9,10,8,8,1,4,1,4]} 1. d4 d5 2. c4 e6 3. Nf3 c6 4. e3 Nf6 5. Nc3 Nbd7 6. Qc2 Bd6 7. Bd3 O-O 8. O-O e5 9. cxd5 cxd5 10. e4 exd4 11. Nxd5 Nxd5 12. exd5 h6 13. Nxd4 Qh4 {[%csl Gd6][%cal Rh4h2] [#] D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} 14. Nf3 Qh5 15. Bh7+ Kh8 {Hoping for ...g6.Black is slightly better.} 16. Qf5 $1 {[%cal Rf5h5]} Qxf5 {The position is equal.} 17. Bxf5 Nf6 18. Bxc8 (18. Bc2 b6 19. Rd1 Bb7 20. Bb3 Rad8 21. Be3 {½-½ (41) Mamedyarov,S (2772)-Topalov,V (2741) Shamkir 2017}) 18... Rfxc8 19. Rd1 Rd8 20. Be3 Be7 {[#]} 21. Ne5 $146 (21. d6 $5 Bxd6 22. g3 $11) ({Predecessor:} 21. d6 Rxd6 22. Rxd6 Bxd6 {½-½ (40) Potkin,V (2576)-Kobalia,M (2613) Sochi 2017}) 21... Kg8 22. d6 Rxd6 23. Rxd6 Bxd6 24. Nc4 Bc7 25. Bd4 Nd5 26. Rd1 Nf4 {[#] Strongly threatening ...Rd8.} 27. Be3 Ne6 28. g3 b5 29. Nd2 Be5 30. Nf3 Bxb2 31. Rb1 Bc3 32. Rxb5 a5 33. a4 Rd8 34. Bb6 Rd1+ 35. Kg2 Ra1 $1 {[%cal Ra1a4]} 36. Bxa5 Bf6 $1 37. Rb4 Nc5 $1 38. Bb6 (38. Rc4 $5 {[%cal Rc4c5]} Nxa4 39. Rc8+ Kh7 40. h4 $11) 38... Nxa4 39. Be3 Nc3 {Precision: White = 80%, Black = 92%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Shyam, Sundar M."]
[Black "Migot, Tangi"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2547"]
[BlackElo "2360"]
[Annotator "TA"]
[PlyCount "137"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,137,42,29,32,20,15,0,19,2,8,9,8,10,26,0,1,0,0,0,8,8,23,20,38,39,47,45,41,23,22,21,29,3,3,6,8,0,15,14,14,19,22,11,17,0,0,0,0,0,0,0,0,0,1,0,12,0,6,0,6,7,51,51,51,51,51,51,51,51,96,96,96,96,96,96,96,96,103,103,103,103,103,103,103,103,103,103,103,103,103,103,120,50,101,101,101,54,72,66,101,50,101,42,42,19,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 g6 4. b3 Bg7 5. Bb2 O-O 6. c4 c6 7. O-O a5 8. d3 Na6 9. cxd5 {A11: English Opening: 1...c6} (9. Nbd2 Be6 10. a3 Qc8 11. Re1 Bh3 12. Bh1 h6 13. Qc2 Qd8 14. Rac1 Nc7 15. cxd5 Ncxd5 16. Nc4 Nb6 {1-0 (35) Malakhov,V (2694)-Polgar,J (2685) Dubai 2014}) 9... cxd5 10. Nc3 {LiveBook: 8 Games} Nb4 11. a3 $146 ({Predecessor:} 11. Qd2 Re8 12. Na4 Bd7 13. Nc5 Rc8 14. Rfc1 b6 15. Nxd7 Qxd7 16. Bd4 Qd6 17. Be5 Qd7 18. Bd4 Qd6 {½-½ (18) Baumegger,S (2483)-Freitag,M (2382) Austria 2014}) 11... Nc6 12. Nb5 Bg4 13. h3 Bxf3 14. Bxf3 e5 15. e3 Qd7 16. Kg2 Rac8 17. Rc1 Rfd8 18. Be2 (18. d4 $5 {[%cal Rd4e5]}) 18... Ne8 19. d4 e4 20. Nc3 b6 21. Ba6 Rb8 22. Bb5 Rbc8 23. Qe2 (23. Na4 $5 {[%cal Ra4b6]} Qb7 24. Qe2 $14) 23... Qe6 24. Ba6 Rc7 25. Na4 Na7 26. Qd2 Bf8 27. Be2 Rdc8 28. Bg4 f5 29. Be2 Be7 30. Nc3 Nf6 31. Ba6 Rb8 {aiming for ...b5.} 32. Nb5 Nxb5 33. Bxb5 Rbc8 34. Ba6 Rxc1 35. Rxc1 Rxc1 36. Qxc1 Ne8 37. Bb5 (37. Bc8 $5 {[%cal Rc8e6]} Qd6 38. Bb7 $14) 37... Kf7 38. Qc2 Nd6 39. Bc6 Nc4 40. Ba8 Nxb2 41. Qxb2 Qd6 {[#]} 42. b4 $1 {[%mdl 512]} axb4 43. axb4 Ke6 44. Qa2 Qd7 45. Qa6 Bxb4 46. Qxb6+ Bd6 47. Bc6 Qc7 48. Qb5 h5 49. Bxd5+ Ke7 50. Bb3 Kf6 51. Qe8 Qe7 52. Qg8 Qf8 53. Qe6+ Kg7 54. Bd5 h4 {[#]} 55. gxh4 (55. g4 $1 $16) 55... Be7 ({Black should play} 55... Kh6 $1 $14) 56. h5 $1 $16 gxh5 57. f3 exf3+ 58. Kxf3 Qf6 59. Qg8+ Kh6 {[#]} 60. Qg3 (60. Bf7 $1 $16) 60... Bd6 $14 61. Qg1 (61. Qf2 {with more complications.} h4 62. Qc2 f4 63. Qe4 Kg5 64. Ke2) 61... Qg5 62. Qxg5+ {White is slightly better.} Kxg5 {[%mdl 4096] Endgame KB-KB} 63. Be6 h4 64. Bd7 Kf6 65. Ba4 Bc7 66. Bc2 Bd6 67. Bb1 Bc7 68. e4 fxe4+ 69. Kxe4 {Precision: White = 60%, Black = 63%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Schroeder, Jan-Christian"]
[Black "Gokerkan, Cem Kaan"]
[Result "1/2-1/2"]
[ECO "B56"]
[WhiteElo "2539"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,114,10,26,31,51,0,35,28,25,22,26,15,30,16,30,0,0,-5,-1,-11,0,0,-9,-50,-35,-67,-60,-76,-70,-81,-82,-80,-60,-52,-52,-61,-56,-126,-82,-129,-116,-156,-136,-114,-125,-110,-120,-132,-127,-110,-96,-127,-87,-112,-113,-112,-102,-106,-66,-103,-116,-133,-73,-73,-63,-75,-79,-225,-195,-193,-190,-193,-158,-160,-121,-105,-114,-98,-98,-339,-333,-357,-355,-334,-316,-302,-91,-91,-91,-95,-22,-64,0,-16,-16,-16,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Nb3 Nc6 7. Be3 {B56: Classical Sicilian: Unusual Lines} g6 8. f3 (8. Nd5 $14 Nxd5 9. exd5) (8. Nd5 Nxd5 9. exd5 Ne5 10. Bd4 Bh6 11. Be2 O-O 12. O-O b5 13. a4 b4 14. c3 Bb7 15. cxb4 Bxd5 {0-1 (29) Anand,V (2776)-Vachier Lagrave,M (2811) Bastia 2016}) 8... h5 9. Qd2 {White is slightly better.} Bg7 10. O-O-O b5 11. Kb1 Be6 $146 ({Find the theoretical novelty and annotate with similar games:} 11... Bd7 12. Nd5 Rb8 13. Bg5 Nxd5 14. exd5 Ne5 15. Re1 f6 {1-0 (32) Lange,C (1657)-Kirschner,A (1544) Greifswald 2001}) 12. Nd5 {Bb6 is the strong threat.} Rc8 13. Bg5 Bxd5 14. exd5 Ne5 {[%cal Bc6e5,Be5d7,Bd7c5][%mdl 32]} 15. Qa5 Qxa5 16. Nxa5 Rc5 17. Be2 (17. Bxf6 $5 Bxf6 18. c3 $11) 17... Rxd5 18. f4 {Threatens to win with Bxf6.} Ned7 19. c4 bxc4 20. Rxd5 Nxd5 21. Bxc4 Nc7 22. Rc1 Nc5 23. Bh4 e6 24. b4 ({White should play} 24. Rc2 $15) 24... Ne4 25. Be1 Kd7 $1 26. a4 Rb8 27. Ka2 f5 28. Ka3 Bd4 29. Rc2 Be3 30. g3 Nf6 31. Be2 Nfd5 32. Bf3 {[#]} h4 $1 {[%mdl 512]} 33. Nc4 (33. gxh4 Bxf4) 33... Ba7 34. gxh4 Rh8 35. Bg3 Bd4 36. Na5 Bc3 ({Black should try} 36... Bf6 37. h5 gxh5) 37. Nc6 $17 Bf6 38. h5 $1 gxh5 {[%cal Bg6h5,Bh5h4][%mdl 32]} 39. h3 (39. Bf2 $17) 39... h4 40. Bh2 Rg8 41. Kb3 Ne3 42. Rc1 Ncd5 43. b5 axb5 44. axb5 {[#]} Nb6 $1 45. Nb4 $2 {[#]} (45. Kb4 $17) 45... d5 $1 $19 46. Rc6 Nec4 47. Kc2 {White hopes to continue with Na6.} Be7 48. Nd3 Rc8 $2 (48... Ra8 $19 {And now ...Ra2+ would win.} 49. Ne5+ Nxe5 50. fxe5 Ra2+ 51. Kb1 Rf2) 49. Rxc8 $17 Kxc8 50. Bg1 Kc7 (50... Nd7 $17 {With the idea ...Na3+.} 51. Kd1 Na3) 51. Bh5 Na3+ (51... Nd7 $1 $15 52. Bf7 Kd6) 52. Kb3 {The position is equal.} Nxb5 {next ...Nd7 is good for Black.} 53. Bf7 Nc4 {Hoping for ...Nd2+.} 54. Bxe6 Nd2+ 55. Kb2 Bf6+ 56. Kc1 Nf3 57. Bf2 Bd4 {Precision: White = 55%, Black = 53%.} (57... Nfd4 $5 {[%cal Rd4e6]} 58. Bxd5 Kd6 $11) 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Vishnu Prasanna.  V"]
[Black "Kaasen, Tor Fredrik"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2538"]
[BlackElo "2399"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,65,57,78,67,79,83,123,58,173,174,188,174,188,173,175,165,247,155,166,100,178,190,437,464,513,543,528,525,533,527,516,504,2367,2358,29984,29985,29989,29990,29991,29992,29992,29993,29993,29994,29995,29996]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Be3 c5 7. Nf3 cxd4 8. Nxd4 Nc6 9. Be2 Nxd4 10. Bxd4 Qa5 11. O-O Be6 12. f4 {[%cal Bf2f4,Bf4e5][%mdl 32] B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0} (12. Rc1 Rfc8 13. b3 a6 14. f4 b5 15. f5 Bd7 16. Bxf6 Bxf6 17. Nd5 Bc6 18. Nxf6+ exf6 19. fxg6 hxg6 20. Qxd6 Qxa2 {1-0 (29) Bruzon Batista,L (2650)-Escalante Ramirez,B (2338) Medellin 2017}) 12... Rfc8 13. b3 a6 14. Qd3 $146 ({White should try} 14. a4 $16) ({Predecessor:} 14. Na4) 14... Bd7 (14... b5 $14) 15. e5 $18 Bf5 16. Qe3 dxe5 17. fxe5 Nd7 18. Nd5 $36 {[%mdl 2048] White has strong initiative.} Qa3 (18... Re8 $142 19. Bc3 Qc5) 19. Kh1 {c5! is the strong threat.} Rc6 20. Qg3 ({Better is} 20. Bc3 $18 {Black must now prevent Bb4.} a5 21. g4) 20... Kh8 (20... e6 $16) 21. Rf3 Be4 $2 {[#]} (21... Re6) 22. Rxf7 Bxd5 23. cxd5 Rc1+ 24. Rxc1 Qxc1+ 25. Kh2 Qd2 26. Bd3 Kg8 (26... Qb4 $142) 27. Rxe7 Bh6 28. e6 {White mates.} Nf6 29. Bxf6 Bf4 30. Rg7+ Kf8 {[#]} 31. Rxh7 $1 {[%cal Rh7h8]} Bxg3+ 32. Kxg3 {[%cal Rh7h8]} Qe3+ 33. Kg4 {Precision: White = 64%, Black = 12%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Sulskis, Sarunas"]
[Black "Sanders, Isaac B"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2519"]
[BlackElo "2359"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,43,26,36,30,35,5,14,10,7,1,10,4,89,88,92,59,99,86,98,55,269,261,441,434,408,275,768,762,673,316,328,330]} 1. Nf3 f5 2. d3 {[%cal Bd2d3,Bd3d4,Bd4d5][%mdl 32]} Nc6 (2... Nf6 3. Nc3 d6 4. e4 g6 5. e5 dxe5 6. Nxe5 Bg7 7. d4 Be6 8. Be2 Nbd7 9. O-O Nxe5 10. dxe5 Nd5 11. Nxd5 Qxd5 12. Qxd5 Bxd5 {0-1 (60) Malakhov,V (2713)-Nepomniachtchi,I (2767) Doha 2016}) 3. d4 e6 4. g3 d6 5. Bg2 Nf6 6. O-O {A04: Unusual lines after 1 Nf3 and King's Indian Attack} Be7 7. c4 O-O {LiveBook: 10 Games} 8. d5 {White is slightly better.} Ne5 9. Nd4 Nxc4 10. dxe6 g6 $146 11. Bh6 {Black should prevent Qc1.} Re8 12. Bc6 Ng4 ({Wrong is} 12... Nxb2 $2 13. Qb3 $18 (13. Qe1 Ng4 $15)) (12... bxc6 $2 13. Nxc6 Bxe6 14. Nxd8 $18) (12... Rf8 $11 {remains equal.} 13. Bb5 (13. Bxf8 Bxf8 14. Bb5 Nb6 $14) 13... Ne5) 13. Bxe8 $16 Qxe8 14. Qc1 Nb6 {[#]} 15. Bg5 $1 c5 {[#]} 16. Nb5 $1 {Black must now prevent N1c3.} Bxg5 $2 (16... a6 $14 17. Nc7 Qd8 18. Nxa8 Bxg5) 17. Qxg5 $18 {Hoping for Nc7.} Qxb5 $2 (17... Bxe6 18. Nc7 (18. Nxd6 Qd7 $14) 18... Qd7) 18. Qd8+ Kg7 19. Nc3 Qc6 $2 (19... Qc4) 20. Qe7+ Kh6 21. f3 (21. Qf8+ $142 Kh5 22. h3) 21... Bxe6 22. fxg4 {Precision: White = 74%, Black = 37%.} ({Stronger than} 22. Qxe6 Re8 $11) 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Fedorovsky, Michael"]
[Black "Sirosh, Ilja"]
[Result "1-0"]
[ECO "A49"]
[WhiteElo "2467"]
[BlackElo "2299"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,57,4,13,15,28,11,62,62,99,73,76,70,72,73,73,71,63,66,54,37,46,50,64,33,35,33,138,20,83,75,142,122,119,97,108,106,111,118,154,112,162,163,709,710]} 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 d5 5. O-O O-O 6. c3 c6 7. Nbd2 Bf5 8. Nh4 Bg4 {LiveBook: 9 Games. D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} (8... Be6 9. Qc2 Nbd7 10. f4 Bg4 11. Re1 e6 12. e4 Nxe4 13. Nxe4 dxe4 14. Qxe4 Bf6 15. Nf3 Bxf3 16. Qxf3 {1-0 (41) Karjakin,S (2767)-Dominguez Perez,L (2751) Baku 2014}) 9. f3 Bc8 $146 {[#] aiming for ...g5.} ({Predecessor:} 9... Bd7 10. e4 Na6 11. f4 dxe4 12. Nxe4 Qb6 13. Nxf6+ exf6 14. Qd3 Rfe8 15. Be3 Rad8 16. b4 {½-½ (31) Sandipan,C (2603)-Lichtenstern,C (2212) Bad Wiessee 2014}) 10. e4 c5 (10... Re8 $11) 11. e5 $1 $14 g5 {And now ...Ne8 would win.} 12. exf6 Bxf6 13. dxc5 gxh4 14. f4 hxg3 15. hxg3 Kh8 16. Qh5 Rg8 17. Qxd5 Qxd5 18. Bxd5 Rxg3+ 19. Kh2 {[%cal Bg1h2,Bh2g2,Bg2f2][%mdl 32]} (19. Kf2 $5 {[%cal Rf2g3]} Bh4 20. Nf3 Rg5+ 21. Nxh4 Rxd5 22. Be3 $14) 19... Rh3+ 20. Kg2 {Threatens to win with Bxb7!} Rd3 (20... Nc6 $14) 21. Bf3 ({Only move:} 21. Be4 $16 Bh3+ 22. Kh2 Bxf1 23. Bxb7) 21... Nc6 (21... Na6 $1 $11 {remains equal.}) 22. Ne4 $16 {[%cal Bd2e4,Be4g3,Bg3h5][%mdl 32]} Bg7 (22... Be6 $142) 23. Kf2 Bf5 24. Be3 Rd7 25. Ng3 Bd3 26. Rh1 e5 27. Nh5 exf4 28. Bxf4 Be5 $2 {[#]} (28... Bg6) 29. Bxc6 $1 {Precision: White = 76%, Black = 32%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Hambleton, Aman"]
[Black "Gluhovsky, Mark"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2461"]
[BlackElo "2281"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,67,-11,0,-18,-29,-8,48,56,66,20,11,0,0,-9,20,35,111,111,85,102,108,114,172,192,187,162,159,89,155,123,132,133,205,178,351,362,565,530,1074,919,2017,1627,29982,29983,29983,29983]} 1. e4 c5 2. Ne2 Nc6 3. Nbc3 Nf6 4. g3 g6 5. d4 cxd4 6. Nxd4 Bg7 7. Nde2 O-O 8. Bg2 Rb8 9. a4 d6 10. O-O a6 11. h3 b5 12. axb5 axb5 13. Bg5 {B70: Sicilian Dragon: 6 g3 and 6 Be2 (without a later Be3)} h6 14. Be3 Ne5 (14... b4 $11 15. Nd5 Nd7) (14... b4 15. Nd5 Nd7 16. Qc1 Kh7 17. Rd1 Bb7 18. Nd4 e6 19. Nxc6 Bxc6 20. Nf4 Ne5 {1-0 (42) Polgar,J (2709)-Mamedov,R (2628) Konya 2012}) 15. b3 $14 {White is slightly better.} Bb7 $146 ({Predecessor:} 15... Bd7 16. Nd5 Nxd5 17. exd5 f5 18. f4 Nf7 19. Bd4 Bxd4+ 20. Nxd4 Qb6 21. Kh2 Ra8 22. Re1 Rfe8 23. Rxa8 {1-0 (23) Vulicevic,N (2320)-Moskow,E (2240) New York 1992}) 16. f4 {[%cal Bf2f4,Bf4f5][%mdl 32]} Ned7 {White must now prevent ...b4.} 17. Ra7 {Hoping for Rxb7!} b4 18. Nd5 $36 {[%mdl 2048] And now Nxf6+ would win. White is pushing.} Nxd5 19. exd5 Nc5 {[#]} ({Black should play} 19... Qc7 $14) 20. f5 $1 $16 Qb6 21. Ra2 g5 22. Nd4 Bf6 {[#]} (22... Nd7 $16) 23. h4 $1 $18 {[%mdl 512]} Ra8 (23... gxh4 24. gxh4) 24. Rxa8 Rxa8 25. hxg5 (25. Re1 $142) 25... hxg5 (25... Bxg5 $142 26. Qg4 Nd7 27. Bxg5 Ne5) 26. Qd2 Ra2 27. Rf2 Ra1+ {[#]} (27... Nd7 $16) 28. Kh2 $1 Ra2 $2 (28... Ra8 29. Nc6 (29. Bxg5 Ne4 $16) 29... Bxc6) 29. Nc6 ({Less strong is} 29. Bxg5 Ne4 $16) 29... Bxc6 (29... Nxb3 $142 30. cxb3 (30. Bxb6 Nxd2 31. Nxb4 Rb2 $17) 30... Rxd2 31. Bxb6 Rxf2) 30. dxc6 Qa5 31. Bxg5 Nxb3 32. Qf4 Qc5 33. Bxf6 exf6 34. Re2 {Precision: White = 67%, Black = 14%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Goh, Wei Ming Kevin"]
[Black "Smirin, Ilia"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "2446"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,94,40,42,52,53,75,58,58,42,65,52,56,60,52,35,56,19,50,0,3,6,6,8,25,9,80,70,238,-128,-109,-146,-137,-114,-110,-112,-76,-161,-126,-150,-118,-144,-115,-120,-146,-215,-208,-264,-277,-256,-247,-243,-186,-278,-71,-76,-73,-76,-74,-62,-60,-60,-48,-110,-79,-247,-238,-237,-221,-239,-232,-222,-217,-312,-305,-320,-310,-742,-742,-686,-646,-585,-499]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Qc7 7. Be2 Bb4 8. Nc2 Be7 {B41: Sicilian: Kan Variation: 5 c4} 9. f4 O-O 10. O-O d6 {White is slightly better.} 11. Qd3 b6 12. b4 Bb7 13. Bb2 Nbd7 {[#]} 14. Rac1 $146 ({Find the theoretical novelty and annotate with similar games:} 14. a3 Rac8 15. Rac1 Qb8 16. Qg3 {1-0 (38) Fier,A (2568)-Mohammad,N (2408) Sharjah 2017}) 14... Rac8 15. Qe3 Qb8 16. Rfd1 Bd8 17. Qg3 g6 18. Ne3 b5 19. cxb5 Bb6 (19... Qa7 $11 20. bxa6 (20. Rxd6 Rxc3 21. Rxc3 Nxe4 $17) 20... Bxa6 21. Bxa6 (21. Rxd6 $2 Bxe2 22. e5 Bb6 $19) 21... Qxa6) 20. bxa6 $16 Rxc3 $2 ({Black should play} 20... Bxa6 $14 21. Bxa6 Qa7 22. Bxc8 Bxe3+ 23. Kh1 Bxc1 24. Rxc1 Rxc8) 21. Bxc3 $2 (21. Rxc3 $18 Nxe4 22. Qe1) 21... Nxe4 $17 22. Qf3 Nxc3 23. axb7 Nxd1 24. Rxd1 Qa7 25. Rd3 (25. Rxd6 $17 Bxe3+ 26. Kh1) 25... d5 26. a3 Nf6 27. g3 Qxb7 28. Kg2 Rc8 29. Bd1 (29. Rd2 $17) 29... Ne4 30. h4 h5 31. f5 Kg7 ({Don't do} 31... exf5 32. Bb3 $17) 32. Bb3 Qe7 ({Don't play} 32... gxf5 33. Nxf5+ $1 {[%mdl 512]} exf5 34. Qxf5) 33. Nf1 (33. fxe6 $142 fxe6 34. Qe2) 33... Rh8 $2 (33... gxf5 $19 {has better winning chances. Strongly threatening ...Qf6.} 34. Qxh5 Rc1) 34. fxe6 fxe6 35. Qe2 Rf8 36. Rf3 Rxf3 $1 37. Qxf3 Qc7 {Threatens to win with ...Qc1.} 38. Qd3 (38. Qe2 $15) 38... Qc1 $36 {[%mdl 2048] Black has strong initiative.} 39. Bc2 $2 (39. Bd1 $17) 39... Qe1 $19 40. Qf3 Nf6 41. Bd3 e5 {And now ...e4 would win.} 42. Bb5 Qc1 43. a4 {[#]} (43. Kh3 $142) 43... Qb2+ $1 44. Qe2 Qd4 {( -> ...Qg1+)} ({Weaker is} 44... Qxb4 45. Qxe5 Kf7 46. Bd3 $11) 45. Qe3 $2 (45. Kh3 Ne4 46. Qg2) 45... Qxe3 {Black is clearly winning.} 46. Nxe3 Bxe3 47. a5 Bd2 {Precision: White = 39%, Black = 55%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Ochsner, Bjorn Moller"]
[Black "Onischuk, Vladimir"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2443"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,110,36,48,-43,10,0,30,32,28,31,50,37,43,52,57,47,44,46,55,49,67,53,66,33,35,-6,-6,-9,-7,-24,0,-11,0,-3,0,-5,-9,-16,-16,-15,-16,-15,-14,-16,-14,-10,-6,-58,-46,-29,-25,-44,-40,-34,0,-3,-8,-78,-78,-96,-87,-83,-48,-61,-4,-8,-8,-8,0,-66,-65,-65,-66,-65,-28,-26,-14,-14,-14,-853,-849,-4922,-4922,-4922,-4898,-687,-687,-29983,-29984,-29984,-29985,-29985,-29986,-29986,-29987]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 c6 5. Qd2 Nbd7 6. f3 b5 7. g4 Nb6 8. b3 Bg7 {B07: Pirc Defence: Miscellaneous Systems} (8... Bb7 9. g5 Nfd7 10. h4 Bg7 11. h5 Rg8 12. a4 b4 13. Nce2 a5 14. c4 c5 15. Rc1 e6 16. d5 exd5 17. exd5 {1-0 (40) Berbatov,K (2454)-Chatalbashev,B (2602) Bankia 2011}) 9. g5 Nh5 {[%cal Bf6h5,Bh5f4,Bf4h3][%mdl 32] LiveBook: 3 Games} 10. Rd1 ({White should play} 10. Nce2 $14) 10... Qc7 $146 (10... f5 $15) ({Predecessor:} 10... O-O 11. Nce2 f5 12. gxf6 Bxf6 13. Ng3 Bh4 14. Bf2 Nf4 15. N1e2 Nh3 16. Bxh3 Bxh3 {½-½ (26) Haskel,J (2241)-Goumas,G (2391) Golden Sands 2014}) 11. Nce2 e5 12. Ng3 Nf4 13. N1e2 Nh3 14. dxe5 dxe5 15. Qd6 Qxd6 16. Rxd6 h6 17. gxh6 Bxh6 18. Bxh6 Rxh6 19. Rxc6 Ng5 20. Kf2 Bd7 21. Rd6 (21. Rc5 {with more complications.} Ke7 22. Rxe5+ Ne6 23. Nd4 Kf6 24. Rxe6+ fxe6 25. Bxb5 Bxb5 26. Nxb5 Nd7 27. h3) 21... Ke7 22. Rd3 $132 {[%mdl 2048] White is not keeping still} Rah8 23. Kg1 (23. h3 $5) 23... Ne6 24. Bg2 b4 25. Rd2 Rh4 26. c4 Nc5 27. Nf1 f5 28. exf5 gxf5 29. Ne3 Be6 30. h3 a5 31. Kf2 a4 32. Rb1 (32. Nc1 $11) 32... axb3 $15 33. axb3 f4 34. Ng4 Nbd7 35. Rbd1 Rxh3 36. Bxh3 Rxh3 37. Rg1 (37. Rd5 $11 {keeps the balance.}) 37... e4 $1 $17 38. fxe4 ({But not} 38. Nd4 $2 Bxg4 39. Nc6+ Ke8 $19) 38... Nxe4+ 39. Ke1 Nxd2 40. Kxd2 Rxb3 (40... Nc5 $1 $15 41. Nxf4 Nxb3+ 42. Ke1 Rc3) 41. Nxf4 $11 Bxc4 {next ...Kd6 is good for Black.} 42. Ne3 Bf7 43. Ned5+ ({White should try} 43. Nd3 $11) 43... Kd6 $1 $15 44. Kc2 Rf3 45. Rd1 b3+ 46. Kb2 $1 Nc5 {Hoping for ...Na4+.} (46... Kc5 $5 {[%cal Rd7e5]} 47. Nd3+ Kb5 48. Nc3+ Kc4 $17) 47. Nb4+ Kc7 48. Rc1 $2 {[%mdl 8192] [#]} (48. Nbd3 $11) 48... Kb6 $1 $19 ({Less strong is} 48... Rxf4 49. Rxc5+ Kd6 50. Rc6+ Ke7 51. Nd3 $15) 49. Nfd5+ Kb5 {( -> ...Na4+)} 50. Ka3 Bxd5 51. Nxd5 {[#]} b2+ $1 {[%mdl 512]} 52. Nc3+ (52. Kxb2 Nd3+) 52... Kc4 {Black mates.} 53. Kxb2 Nd3+ 54. Kc2 Nxc1 55. Ne4 Nb3 {Precision: White = 44%, Black = 65%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Lugovskoy, Maxim"]
[Black "Stocek, Jiri"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "2440"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,28,25,25,28,0,0,-8,0,-8,-12,-16,-2,-9,0,-2,0,0,24,19,23,25,33,5,35,42,42,-4,-12,-16,-22,-114,-122,-124,-120,-181,-197,-239,-255,-249,-211,-200,0,-116,0,0,0,0,0,0,0,0,0,0]} 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Bg5 a6 5. a4 Nc6 6. Nge2 {B06: Modern Defence} Nf6 7. g3 $146 ({Predecessor:} 7. Qd2 h6 8. Bf4 e5 9. dxe5 dxe5 10. Qxd8+ Kxd8 11. O-O-O+ Bd7 12. Bd2 Kc8 {1-0 (53) Balogh,C (2621)-Dinstuhl,V (2409) Germany 2017}) 7... h6 8. Bxf6 Bxf6 9. Nd5 Bg7 10. Bg2 e5 {[%cal Rc6d4]} 11. c3 Bg4 12. f3 Bd7 13. O-O Ne7 14. Ne3 O-O 15. f4 h5 16. Kh1 Rb8 17. b4 Qe8 18. Qd3 exd4 19. cxd4 Bxa4 {Black wants to play ...Bb5.} 20. Rxa4 (20. Nc3 $11 {keeps the balance.} Bd7 21. f5) 20... Qxa4 $17 21. f5 Nc6 22. Nd5 (22. fxg6 $17 fxg6 23. e5 Rxf1+ 24. Bxf1) 22... Nxb4 $19 23. Ne7+ Kh7 24. Qf3 Rbe8 25. f6 Bh8 $2 (25... Bh6 $19 {...Nc2 is the strong threat.} 26. Nf4 Nc2) 26. e5 (26. g4 $1 $11 Qb5 27. gxh5 Qxh5 28. Qxh5+ gxh5 29. e5) 26... Nc6 {[#]} ({Better is} 26... dxe5 $17 27. Nc3 Qb3) 27. Qxh5+ $3 $11 {[%mdl 512] The position is equal.} gxh5 28. Be4+ Kh6 29. Nf5+ Kh7 30. Ne7+ $1 Kh6 31. Nf5+ {Precision: White = 51%, Black = 69%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Gholami, Aryan"]
[Black "Braun, Arik"]
[Result "1/2-1/2"]
[ECO "B44"]
[WhiteElo "2434"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,61,0,0,24,35,49,49,27,-41,-41,-37,-31,-41,-41,-42,-36,-37,-28,-27,-29,-29,-8,-8,-8,-5,0,-15,-16,-26,-10,-23,-10,-9,-8,-9,-9,-8,-8,-15,0,-11,-11,-11,-9,-13]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Bd3 Nf6 7. O-O d5 8. Nc3 Be7 9. Qf3 O-O 10. Re1 d4 {B40: Sicilian: 2...e6, Unusual lines} 11. e5 dxc3 12. exf6 Bxf6 {White is slightly better.} 13. bxc3 (13. b4 $11) 13... Qa5 $1 $15 14. Qxc6 $146 {[#] And now Qe4 would win.} ({Find the theoretical novelty and annotate with similar games:} 14. Bd2 Ba6 15. Qxc6 Bxd3 16. cxd3 Rac8 17. Qe4 Bxc3 18. Bxc3 Rxc3 {½-½ (53) Wibe,T (2380)-Stein,B (2380) Oslo 1985}) 14... Bd7 15. Qxd7 {aiming for Rb1.} Bxc3 16. Bd2 $1 {[%cal Rd2c3]} Bxd2 17. Re4 Bc3 18. Rd1 Rfd8 19. Qa4 Qh5 20. Rb1 g6 21. g3 Rab8 22. Rb3 Ba5 23. Rh4 Qe5 24. Qf4 Qxf4 25. Rxf4 {The position is equal.} Bb6 26. Kg2 Rbc8 27. a4 f5 28. Rc4 e5 29. Rxc8 Rxc8 30. f3 Kf7 31. Rb5 {Precision: White = 78%, Black = 60%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Laurusas, Tomas"]
[Black "Sanal, Vahap"]
[Result "1/2-1/2"]
[ECO "E18"]
[WhiteElo "2409"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,64,7,9,-1,11,0,16,29,43,44,42,18,18,17,17,10,18,14,39,18,18,10,18,18,28,18,18,18,35,35,35,35,35,35,35,0,35,35,39,35,39,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2 d6 9. Nxe4 {E18: Queen's Indian: Old Main Line (4 g3 Bb7 5 Bg2 Be7 6 0-0 0-0 7 Nc3)} (9. d5 Nxd2 10. Nxd2 e5 11. b4 a5 12. bxa5 Rxa5 13. Nb3 Ra8 14. a4 Bc8 15. a5 Na6 16. Nb5 f5 17. Ra3 f4 18. axb6 cxb6 19. Nd2 Bg4 20. Bf3 Bh3 21. Bg2 Bg4 22. Bf3 Bh3 23. Bg2 {½-½ (23) Tomashevsky,E (2711)-Rapport,R (2692) Sharjah 2017}) 9... Bxe4 {LiveBook: 5 Games} 10. Bc3 Nd7 11. d5 {dxe6 is the strong threat.} exd5 $146 ({Predecessor:} 11... e5 12. Nxe5 Nxe5 13. Bxe4 f5 14. Bg2 Bf6 15. Qc2 g6 16. Rae1 Bg7 {1-0 (33) Laxman,R (2461)-Yogit,S (1985) Chennai 2012}) 12. cxd5 Bxf3 13. Bxf3 f5 14. b4 Bf6 15. Rc1 a5 16. a3 axb4 17. axb4 Rf7 18. Bxf6 Nxf6 19. Ra1 g6 20. Qd4 Kg7 21. Rfc1 Re7 22. e3 h5 23. h4 Qe8 24. Rxa8 Qxa8 25. Ra1 Qe8 26. Rc1 Qf7 27. Rc6 Kh7 28. Bg2 Qg7 29. Rc1 Ne4 {The position is equal.} 30. Qxg7+ Kxg7 31. Kf1 Nf6 32. Ke2 Ng4 {Precision: White = 57%, Black = 56%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Lodici, Lorenzo"]
[Black "Zakhartsov, Viacheslav V"]
[Result "0-1"]
[ECO "E52"]
[WhiteElo "2408"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,94,16,27,0,0,-14,16,8,35,19,18,2,12,0,0,0,0,0,9,13,21,26,35,27,22,12,31,26,30,25,26,26,43,44,159,162,168,164,206,222,427,435,418,423,425,422,386,241,372,366,406,405,527,278,1033,988,940,741,757,701,727,703,683,243,249,172,145,-29983,-29984,-29984,-29985,-29985,-29986,-29984,-29944]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. a3 Bxc3+ 8. bxc3 dxc4 9. Bxc4 c5 10. O-O Qc7 11. Qe2 Bb7 12. Bd3 {E54: Nimzo-Indian: Rubinstein: Main Line: 7...dxc4 8 Bxc4} (12. Ne5 Nbd7 13. Nxd7 Qxd7 14. f3 Rac8 15. Bb2 Nd5 16. Bb5 Qe7 17. Bd3 c4 18. Bc2 e5 19. Rfe1 f5 20. dxe5 Qxe5 {½-½ (29) Maiorov,N (2552)-Postny,E (2662) Plovdiv 2012}) 12... Be4 13. a4 Nbd7 14. Bb2 $146 {The position is equal.} ({Predecessor:} 14. Nd2 Bxd3 15. Qxd3 Rfd8 16. e4 cxd4 17. cxd4 Rac8 18. f3 Ne5 19. Qe3 Nc4 20. Nxc4 Qxc4 {½-½ (47) Sbarra,M (2305)-Pelizzola,D (2010) Milan 2012}) 14... Rac8 15. Ba6 Bb7 16. Bxb7 Qxb7 17. c4 cxd4 18. exd4 Qe4 19. Qd1 Qb7 (19... Qf5 $5 {[%cal Rc8c4]}) 20. Qb3 Rc7 21. Rfe1 Rfc8 22. Nd2 h6 23. h3 a6 24. Rab1 Qc6 25. Ba3 Rb7 26. Rbc1 Rd8 27. Nf3 {[%cal Bd2f3,Bf3d4,Bd4f5,Bf5h6,Bh6f7,Bf7e5][%mdl 32]} Rbb8 {[#]} (27... Ra8 $14) 28. d5 $1 $36 {[%cal Rd5c6][%mdl 2560] White has strong initiative.} exd5 29. Nd4 Qa8 30. Nf5 dxc4 $2 (30... Kh7 31. Qc2 Kh8) 31. Qg3 $18 {[%csl Gf5][%cal Rg3g7]} Nh5 {[#]} 32. Nxh6+ $1 Kh7 33. Qg5 Ndf6 34. Nxf7 Rd3 (34... Qd5 {was necessary.}) 35. Bb2 {[%cal Ba3b2,Bb2c3,Bc3d4][%mdl 32] And now Bxf6 would win.} Qd5 36. Ne5 Rb3 37. Bc3 b5 $2 (37... Kg8 38. Rcd1 Qb7) 38. Rcd1 Qc5 39. Bd4 Qc7 40. g4 Kg8 41. gxh5 Rxh3 42. h6 $2 (42. Qg2 Rh4 {[#]} 43. Nd7 $1 {[%mdl 512]} Qxd7 44. Bxf6) 42... Rxh6 43. Ng4 Nxg4 44. Re7 $2 {[%mdl 8192] [#]} (44. Qxg4 $16 Qf7 45. Re5) 44... Rh1+ $1 {[%mdl 512] Black mates.} 45. Kg2 (45. Kxh1 Qh2#) 45... Qh2+ 46. Kf3 Rf8+ 47. Bf6 Rxf6+ {Precision: White = 54%, Black = 35%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Lostuzzi, Manlio"]
[Black "Sasikiran, Krishnan"]
[Result "0-1"]
[ECO "A40"]
[WhiteElo "2405"]
[BlackElo "2688"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,66,26,24,36,53,55,23,0,12,2,36,36,36,36,36,36,36,32,34,34,30,11,12,12,11,0,0,-34,0,0,0,0,0,-89,-120,-217,-255,-253,-253,-239,-229,-789,-379,-514,-506,-566,-565]} 1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 cxd4 5. Nxd4 d5 6. Bg2 e5 7. Nf3 d4 8. O-O Nc6 9. e3 Bc5 10. exd4 exd4 11. Nbd2 O-O 12. Nb3 {E01: Catalan: Early deviations} Qb6 13. Nxc5 (13. Bg5 Ne4 14. Bf4 Re8 15. Re1 Bg4 16. h3 Bh5 17. g4 Bg6 18. Nh4 d3 19. Nxc5 Nxc5 {0-1 (46) Smirnov,P (2564)-Grischuk,A (2752) Cheliabinsk 2016}) 13... Qxc5 14. b3 {White has an edge.} Bg4 15. h3 Bh5 16. Bb2 Rfd8 $146 ({Find the theoretical novelty and annotate with similar games:} 16... Rad8 17. Re1 Rd7 18. Qd2 Rfd8 19. Rad1 h6 {1-0 (50) Petrosyan,M (2449)-Hambartsumian,Y (2322) Yerevan 2015}) 17. Re1 a5 18. Qd2 a4 19. Rad1 {aiming for g4.} axb3 20. axb3 {And now g4 would win.} Ra2 21. Ra1 Rxa1 22. Bxa1 h6 23. Rd1 Ne4 24. Qe1 Bxf3 25. Bxf3 Ng5 $36 {[%cal Be4g5,Bg5h3,Bh3f2,Bf2g4,Bg4e3,Be3c2][%mdl 2080] Black has good play.} 26. Bg2 Qf5 27. f4 (27. b4 $11 {keeps the balance.}) 27... Nxh3+ $17 28. Kh2 {[#]} (28. Kf1 $17) 28... Nf2 $1 $19 {[%mdl 512]} 29. Rd2 {[#]} (29. Qxf2 Qh5+) 29... Ng4+ $1 30. Kg1 Qc5 31. Be4 $2 (31. Bf3 h5 32. Bxg4 hxg4 33. Bb2) 31... d3+ (31... Re8 $142 32. Bh7+ Kf8) 32. Kg2 Ne3+ 33. Kf3 Nc2 $1 {Precision: White = 28%, Black = 72%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Harsha Bharathakoti"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2404"]
[BlackElo "2648"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,60,0,0,-17,0,-8,0,-6,0,-7,0,0,0,0,0,0,0,-5,0,-4,6,6,6,6,11,11,10,2,6,-33,-33,-33,-33,-33,-33]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. Bd3 O-O 8. O-O dxc4 9. Bxc4 b5 10. Bd3 Bb7 11. a3 Qe7 12. Ng5 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} (12. e4 e5 13. Bg5 Rfe8 14. dxe5 Nxe5 15. Nxe5 Bxe5 16. f4 Bd4+ 17. Kh1 h6 18. Bh4 Qc5 19. e5 Nd5 {0-1 (41) Kasimdzhanov,R (2672)-Gelfand,B (2755) Jermuk 2009}) 12... h6 13. Nge4 Nxe4 14. Nxe4 c5 {LiveBook: 6 Games} 15. Bxb5 {[#]} (15. Nxd6 {keeps more tension.} Qxd6 16. Bxb5 cxd4 17. Rd1 Rac8 18. Qe2) 15... cxd4 $146 {[#] Threatens to win with ...Rac8.} (15... Bxh2+ $5 16. Kxh2 Qh4+ 17. Kg1 Bxe4 $11) ({Predecessor:} 15... Bxh2+ 16. Kxh2 Qh4+ 17. Kg1 Bxe4 18. Qe2 Rfd8 19. f3 Bg6 {1-0 (29) Gajewski,G (2569)-Szabo,K (2517) Cappelle-la-Grande 2011}) 16. Bxd7 Qxd7 17. Nxd6 Qxd6 18. exd4 Qd5 {[%csl Gb7][%cal Rd5g2]} 19. f3 Qxd4+ 20. Qf2 Qxf2+ 21. Rxf2 a5 22. a4 Rfc8 23. Bd2 Rc4 24. b3 Rd4 25. Be1 Bd5 26. Rb2 Rb8 27. Bxa5 {[#] And now b4 would win.} Rxb3 28. Rxb3 Bxb3 {Black is slightly better.} 29. Bb6 Rxa4 30. Rxa4 Bxa4 {Precision: White = 59%, Black = 42%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Kumsiashvili, Nikoloz"]
[Black "Berelowitsch, Alexander"]
[Result "1-0"]
[ECO "A81"]
[WhiteElo "2403"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,67,47,37,35,45,33,44,39,70,53,112,100,196,208,218,189,193,184,190,169,192,172,198,193,237,231,199,200,214,204,209,211,371,368,365,349,376,343,369,352,385,368,597,585,810,790,765,552,519,517,518,502,565,556]} 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. O-O O-O 6. c4 d6 7. Nc3 Qe8 8. Re1 e5 9. e4 {Black must now prevent dxe5. A87: Dutch Defence: Leningrad System: 5 Nf3} (9. dxe5 dxe5 10. e4 Nc6 11. Nd5 fxe4 12. Ng5 Nxd5 13. cxd5 Nd4 14. Nxe4 Bf5 15. Be3 Qd7 16. Qd2 Bxe4 17. Bxe4 Nf3+ 18. Bxf3 Rxf3 {½-½ (46) Amin,B (2663)-Idani,P (2573) Dubai 2017}) 9... Nc6 10. exf5 Bxf5 11. h3 $146 {White is slightly better.} ({Find the theoretical novelty and annotate with similar games:} 11. dxe5 dxe5 12. Bg5 h6 13. Bxf6 Bxf6 14. Nd5 Qf7 15. Nxf6+ Qxf6 16. Qd5+ Be6 17. Qe4 Bf5 18. Qd5+ Be6 19. Qe4 Bf5 20. Qd5+ Be6 {½-½ (20) Safargaliyev,T (1963)-Minbayev,B (2038) Sochi 2016}) 11... Rd8 12. d5 Nb4 (12... Ne7 $1 $14) 13. g4 $1 $16 {[%cal Rg4f5]} Nxg4 (13... Bc8 $16) 14. hxg4 $18 Bxg4 15. a3 Na6 {[#]} 16. Ne4 $1 Nc5 17. a4 Rd7 18. Nxc5 dxc5 19. Re4 Bh5 20. Qb3 Rdf7 {[%cal Rh5f3]} 21. Ng5 Rxf2 22. Be3 (22. Qxb7 h6 $11) 22... Rxg2+ 23. Kxg2 h6 $2 (23... Qe7 24. Kh2 (24. Qxb7 h6 $11) 24... b6) 24. Bxc5 Rf5 25. Ne6 (25. Qxb7 Rxg5+ 26. Kh3 Qd7+ 27. Kh2 Bf3 $19) 25... Qf7 {And now ...Bf3+ would win.} 26. Ra3 b6 27. Bg1 Bf8 {[#]} 28. c5 $1 bxc5 $2 (28... Be7 29. Qc3 (29. Nxc7 Rg5+ 30. Kh2 Qf1 $17) 29... bxc5) 29. Qb8 {White is clearly winning.} Bf3+ {[#]} 30. Rxf3 $1 Rxf3 31. Qxf8+ Qxf8 32. Nxf8 Rxf8 33. Bxc5 Rb8 34. b4 {Precision: White = 89%, Black = 32%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Ikeda, Junta"]
[Black "Ovsejevitsch, Sergei"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2397"]
[BlackElo "2596"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,102,18,27,4,5,5,14,-18,18,-29,0,-8,-1,-12,20,7,10,-9,2,-37,-25,-38,-42,-53,-43,-62,-30,-44,-21,-47,-40,-54,-50,-47,-34,-14,-8,-7,0,-42,0,0,0,0,0,0,0,-125,-132,-120,-148,-201,-199,-199,-192,-149,-154,-193,-197,-186,-178,-229,-197,-434,-420,-955,-962,-643,-596,-12839,-12839,-12839,-12839,-12846,-12847,-12845,-12843,-12845,-12846]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Qc2 Nbd7 8. Bd3 O-O 9. Nge2 Re8 10. O-O Nf8 11. f3 Be6 12. Rad1 Rc8 13. Kh1 {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2)} Ng6 {LiveBook: 35 Games} (13... a6 14. a3 b5 15. Nf4 h6 16. Bh4 N6d7 17. Bxe7 Rxe7 18. Qf2 Nb6 19. Nce2 Nc4 20. Ng3 g6 {1-0 (33) Rodshtein,M (2687)-Dervishi,E (2564) Baku 2016}) 14. h3 Nh5 $146 ({Predecessor:} 14... Qd7 15. Nf4 Nxf4 16. Bxf4 h6 17. Qf2 Rcd8 18. Bc2 Qc8 19. e4 dxe4 20. fxe4 Bc4 {1-0 (37) Chen,P (2129)-Kalogridakis,G (2017) Istanbul 2012}) 15. Bxe7 {The position is equal.} Qxe7 16. Qd2 (16. g4 $5 {[%cal Rg4h5]}) 16... Rcd8 17. Rc1 Qd6 (17... Bc8 $5 {[%cal Re7e3]}) 18. Nd1 Bc8 19. Qe1 Re7 20. g4 Nf6 {[%cal Bh5f6,Bf6e8,Be8d6][%mdl 32]} 21. Qg3 (21. Kg2 {looks sharper.} Nf8 22. Qg3 Qxg3+ 23. Nxg3 Ne8 24. h4) 21... Ne8 22. a3 Qxg3 23. Nxg3 Nd6 24. b4 Nh4 25. a4 a6 26. Ne2 h5 27. Kh2 hxg4 28. hxg4 g5 {...f5 is the strong threat.} 29. b5 axb5 30. axb5 cxb5 {Threatening ...f5.} 31. Rc5 b6 32. Rc6 f5 33. Nec3 Rf7 34. gxf5 Bxf5 35. Be2 Nc4 {Threatens to win with ...Nd2.} 36. Nxb5 (36. Rg1 $11) 36... Bd7 $36 {[%mdl 2048] Black is in control.} 37. Rxc4 dxc4 38. Bxc4 (38. Ndc3 $17 Rh7 39. Kg1) 38... Bxb5 $19 39. Bxb5 {next Bc4 is good for White.} Rxf3 40. Rxf3 Nxf3+ $17 {[%mdl 4096] Endgame KRN-KBN} 41. Kg3 Nd2 42. Kg4 Kg7 43. Bc6 (43. Nb2 {is a better defense.}) 43... Rc8 $19 44. d5 $2 {[#]} (44. Bb5) 44... Kf6 45. Nc3 (45. Nb2 $142) 45... Nc4 {Black is clearly winning.} 46. Ne4+ Ke5 47. Nxg5 Nxe3+ 48. Kf3 Nxd5 49. Bb7 Rg8 50. Nh3 Kd4 51. Nf2 b5 {Precision: White = 16%, Black = 62%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Krivonosov, Oleg"]
[Black "Brunello, Sabino"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "2397"]
[BlackElo "2566"]
[Annotator "TA"]
[PlyCount "30"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,30,27,26,60,18,27,23,28,28,43,29,16]} 1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 Nh5 7. Bd2 Nf6 8. Bf4 Ne4 9. e3 Nxc3 10. bxc3 e6 11. Bd3 {LiveBook: 28 Games} Be7 {D13: Slav Defence: Exchange variation without ...Bf5} (11... Bd6 12. Bxd6 Qxd6 13. O-O O-O 14. Rc1 e5 15. dxe5 Nxe5 16. Be2 Rd8 17. Nxe5 Qxe5 18. Qb3 b6 19. c4 {½-½ (31) Wang,Y (2718)-Mamedyarov,S (2743) Tromsoe 2014}) 12. Ne5 Nxe5 13. Bxe5 O-O 14. O-O g6 $146 ({Predecessor:} 14... Bd7 15. Qb1 Rc8 16. Bxh7+ Kh8 17. Bd3 Rxc3 18. Qd1 f5 19. e4 {0-1 (29) Zanetti,B (2008)-Starostits,I (2460) Neuchatel 2004}) 15. c4 dxc4 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Saveliev, Alexei"]
[Black "Blomqvist, Erik"]
[Result "0-1"]
[ECO "B83"]
[WhiteElo "2396"]
[BlackElo "2525"]
[Annotator "TA"]
[PlyCount "38"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,38,0,4,14,0,0,5,0,-54,-52,-62,-55,-289,-59,-493,-501]} 1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 d6 6. Be2 Nf6 7. O-O Be7 8. Be3 O-O 9. f4 e5 10. fxe5 dxe5 11. Nf5 Bxf5 12. Rxf5 Rc8 13. Bd3 {[#] LiveBook: 6 Games. B83: Sicilian Scheveningen: 6 Be2, lines without ...a6} Nd7 $146 ({Predecessor:} 13... Bb4 14. Bg5 Bxc3 15. bxc3 Qb6+ 16. Rf2 Ne8 17. Rb1 Qc5 18. Rxb7 Nd6 19. Rb3 f5 20. exf5 e4 {½-½ (45) Jakovenko,D (2671)-Alekseev,E (2639) Moscow 2006}) 14. Nd5 Bc5 15. Bxc5 {The position is equal.} Nxc5 16. Qg4 (16. Rb1 $11) 16... Nxd3 $15 17. cxd3 Ne7 18. Nf6+ Kh8 19. Rh5 $2 {[%mdl 8192] [#]} ({White has to play} 19. Qh3 $1 $15 h6 20. Rf2) 19... Qb6+ {Precision: White = 17%, Black = 84%.} ({Inferior is} 19... gxf6 20. Qh4 $11) 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Mandizha, Farai"]
[Black "Schneider, Ilja"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "2392"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,88,9,8,14,11,0,-14,12,8,5,6,13,8,20,0,0,0,0,0,12,25,21,0,0,0,0,0,0,0,0,-67,-70,-61,-69,-63,-60,-114,-111,-120,-116,-110,-106,-150,-141,-154,-133,-161,-154,-167,-150,-150,-147,-154,-146,-258,-254,-231,-195,-197,-185,-178,-178,-187,-134,-141,-104,-130,-110,-157,-129,-269,-263]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. a4 e6 6. Bg5 a5 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} 7. e3 Be7 8. Be2 Na6 9. O-O O-O 10. Rc1 {LiveBook: 12 Games} (10. Qb3 Nb4 11. Na2 dxc4 12. Qxc4 Nxa2 13. Qxa2 Nd5 14. Bxe7 Qxe7 {½-½ (34) Zhou,W (2635)-Malakhov,V (2695) China 2016}) 10... Nb4 11. Qb3 b6 12. Ne5 Nd7 $146 (12... Bb7 {seems wilder.} 13. Bh4 Rc8 14. Bg3 Nd7 15. Rfd1 Nxe5 16. Bxe5 Ba6) ({Predecessor:} 12... Bb7 13. Rfd1 Nd7 14. Bxe7 Qxe7 15. Nxd7 Qxd7 16. cxd5 exd5 {0-1 (46) Kierzek,M (2244)-Plischki,S (2377) Prague 2016}) 13. Bxe7 Qxe7 14. Nxd7 Bxd7 15. Rfd1 Rfd8 16. Bf3 Rac8 17. Na2 dxc4 18. Rxc4 {[%cal Ra2b4]} Nxa2 19. Qxa2 e5 {Threatening ...e4.} 20. Qb1 exd4 21. exd4 Qf6 22. Qc1 g6 23. Qc3 Kg7 24. Rc1 (24. h3 $11) 24... Be6 $1 $15 {[%cal Re6c4]} 25. Rxc6 Rxc6 26. Bxc6 Qxd4 27. h3 (27. Rb1 $15) 27... Qxc3 $17 28. bxc3 {[%mdl 4096] Endgame KRB-KRB} Rc8 29. Bb5 Bc4 30. Bd7 {[#]} Rc7 $1 {[%cal Rc7d7]} 31. Rd1 Kf8 32. Rd4 Ke7 33. Bg4 Bb3 34. Re4+ Kf8 35. Rd4 Rxc3 36. Kh2 (36. Be2 $17 {is a better defense.}) 36... Rc4 $19 37. Rd8+ Kg7 38. Rb8 Bxa4 39. Rxb6 Bc6 40. Ra6 Rc5 (40... a4 $19 41. Bd1 h5) 41. Bd1 $17 Bd5 42. Ba4 Be6 43. Bd1 Kf6 44. f4 (44. Ba4 $17) 44... Kf5 {Precision: White = 53%, Black = 82%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Kleinman, Michael"]
[Black "Lei, Tingjie"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "2340"]
[BlackElo "2514"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,84,22,26,17,18,28,33,39,0,0,-7,30,-8,46,31,74,50,37,45,81,-26,-34,-151,-94,-90,0,-190,-190,-176,-96,-384,-334,-428,-423,-1073,-1109,-1105,-1096,-1094,-1063,-973,-873,-1261,-841,-1016,-933,-1666,-754,-1041,-615,-1719,-1668,-1693,-1685,-1816,-1527,-2174,-1589,-1600,-1572,-1618,-1600,-1813,-1796,-29982,-29982,-29994,-29995]} 1. e4 c6 2. Nc3 d5 3. Nf3 Nf6 4. e5 Ne4 5. Ne2 Qb6 6. d4 {B11: Caro-Kann: Two Knights Variation} e6 7. Nfg1 f6 8. f3 Ng5 9. exf6 gxf6 10. f4 {LiveBook: 49 Games} Ne4 11. Ng3 Bd7 12. a4 $146 ({Predecessor:} 12. Nxe4 dxe4 13. c3 {0-1 (46) Vachier Lagrave,M (2819)-Anand,V (2770) Saint Louis 2016}) 12... a5 13. Nxe4 (13. c3 {with more complications.} Na6 14. Qh5+ Kd8 15. Bd3 f5 16. Nf3) 13... dxe4 14. Qh5+ Kd8 15. c3 Be7 ({Better is} 15... Na6 $11) 16. Bc4 Na6 {[#]} 17. f5 $1 {[%mdl 512]} e5 $1 {[%cal Re5d4]} (17... exf5 18. Ne2) 18. dxe5 fxe5 19. Bg5 (19. Nh3 $16) 19... Qxb2 $11 20. Bxe7+ {[#]} (20. Rc1 $1 $15 Qxg2 21. Bxe7+ Kc8 22. Qg5 Qxh1 23. Qg7) 20... Kc8 (20... Kc7 $142 $1 21. Rd1 Qxc3+ 22. Kf1 Qxc4+ 23. Ne2 Rae8) 21. Ra3 $17 {Black must now prevent Nh3.} Nb4 (21... Qxg2 $17 22. Qg5 Qxh1) 22. Rb3 $2 {[#]} (22. cxb4 $11 {and White stays safe.} Qxa3 23. Qf7) 22... Qc1+ $1 $40 {[%mdl 128] Black is out for blood.} ({Inferior is} 22... Nd3+ 23. Bxd3 Qxb3 24. Bxe4 $11) 23. Kf2 {Threatens to win with Bg5.} Nc2 (23... Nd3+ $19 24. Bxd3 exd3) 24. Ne2 $2 {[%mdl 8192]} (24. Qe2 $17 {only move.} Bxf5 25. h4 Qf4+ 26. Nf3 exf3 27. Qxf3) 24... e3+ 25. Kg3 Qxh1 26. Qg5 (26. Rb2 $142 Ne1 27. Nc1 Nxg2 28. Rxg2 Qxc1 29. Qf7) 26... Ne1 27. Kh3 Qf1 28. Be6 Bxe6 29. fxe6 Qxe2 30. Bf6 Re8 31. e7 Qd1 32. c4 e2 33. Re3 Nc2 34. Rxe2 Qxe2 35. Qf5+ Kc7 36. c5 Kb8 37. Qd7 Qh5+ 38. Bh4 Ra6 39. g4 Qf7 {( -> ...Qf1+)} 40. Bf6 Ka7 41. Qd8 Ne3 42. Kg3 Qxf6 {Precision: White = 41%, Black = 51%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Rahul Srivatshav P"]
[Black "Meskovs, Nikita"]
[Result "0-1"]
[ECO "E46"]
[WhiteElo "2321"]
[BlackElo "2495"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,62,0,16,14,25,13,22,10,11,11,10,-3,-1,-3,0,-14,37,44,45,-103,-91,-104,-68,-25,-22,-117,-72,-89,-91,-74,-41,-49,-36,-89,-53,-56,-38,-120,-125,-484,-476]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nge2 Re8 6. a3 Bf8 7. Ng3 d5 8. Be2 {E46: Nimzo-Indian: Rubinstein: 4 e3 0-0 5 Ne2 without early Bd3} b6 9. cxd5 exd5 10. O-O Bb7 11. b4 Nbd7 12. Qb3 c6 {LiveBook: 4 Games} 13. a4 {[#]} a5 $146 ({Predecessor:} 13... g6 14. Bf3 Bg7 15. Ba3 Rc8 {0-1 (43) Gorovets,A (2522)-Bruzon Batista,L (2626) Merida 2016}) 14. bxa5 Rxa5 15. Ba3 g6 16. Rfe1 h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 17. Bf3 h4 {[#] Hoping for ...Bxa3.} 18. Nf1 Bxa3 19. Rxa3 Nf8 (19... h3 $11) 20. Rb1 $14 N6d7 21. e4 (21. Nd2 $14) 21... Ne6 $17 22. Qd1 Qe7 23. Ra2 dxe4 24. Nxe4 (24. Bxe4 $11 {remains equal.} Ng5 25. Re2) 24... c5 25. dxc5 {Strongly threatening Qxd7!} Bxe4 ({Reject} 25... Nexc5 $6 26. Nxc5 Nxc5 27. Rxb6 $11) 26. Bxe4 Ndxc5 {[%cal Bd7c5,Bc5a4,Ba4c3][%mdl 32]} ({But not} 26... Nexc5 $6 27. Bc6 $11) 27. Bf3 Rd8 $36 {[%mdl 2048] White is under pressure.} (27... h3 $5) 28. Qe1 ({White should play} 28. Rd2 $15) 28... Rxa4 29. Rxa4 Nxa4 30. Ne3 ({Better is} 30. Bg4 $15) 30... Nd4 31. Bd5 $2 {[%mdl 8192] [#]} (31. h3 $17) 31... Nc3 $1 {[%mdl 512] Precision: White = 23%, Black = 56%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Seresin, Francesco"]
[Black "Thorfinnsson, Bragi"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "2265"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,96,43,50,47,56,57,60,54,58,37,46,35,44,0,0,-20,17,0,6,-94,-51,-62,-58,-52,-49,-43,-49,-93,-96,-106,-37,-35,-20,-136,-121,-93,-121,-227,-32,-294,-289,-313,-310,-336,-303,-500,-498,-455,-447,-421,-418,-420,-381,-484,-455,-561,-546,-615,-591,-461,-406,-410,-413,-716,-364,-554,-549,-631,-561,-681,-597,-1139,-1119,-1066,-1032,-1617,-1627,-2033,-1674,-1975,-1775,-29998,-29999]} 1. d4 d5 2. c4 e6 3. Nc3 c6 {[%cal Bc7c6,Bc6d5][%mdl 32]} 4. e4 Bb4 5. cxd5 cxd5 6. e5 Nc6 7. Nf3 Nge7 8. Bd3 Nf5 9. a3 {C02: French: Advance Variation} Bxc3+ 10. bxc3 Qc7 11. O-O {White is slightly better.} Na5 (11... Bd7 12. a4 Na5 13. Qc2 Rc8 14. Bd2 Nc4 15. Bf4 Qa5 16. Rfb1 b6 {½-½ (44) Caprio,G (2435)-Markoja,B (2148) Meissen 2013}) 12. Bd2 $146 ({Predecessor:} 12. Qc2 Nc4 13. Nd2 Bd7 14. Nxc4 dxc4 15. Be4 Ne7 16. a4 Bc6 {1-0 (28) Molinari,G-Van Kempen,J Hengelo 1999}) 12... Bd7 13. Re1 Nc4 14. Bxf5 exf5 15. Ng5 (15. Bf4 $5 {[%cal Re5e6]} Qc6 16. Nd2 $11) 15... Be6 16. Qh5 O-O-O 17. Nf3 (17. Qe2 $11) 17... Kb8 18. Qg5 h6 19. Qxg7 Nxd2 20. Nxd2 Qxc3 21. Nf1 Qxd4 22. Qf6 f4 (22... Qg4 $17 23. Rad1 d4) 23. Rab1 a5 $36 {[%mdl 2048] Black is pushing.} 24. Rb5 {[#]} (24. Rbd1 $11 Qa4 25. Rd3) 24... Rhg8 $1 $17 25. Reb1 Rd7 {Threatens to win with ...Qe4.} 26. g3 {[#]} (26. Qxh6 $17 Qxe5 27. Nd2) 26... h5 $2 (26... Rc7 $1 $19 {[%cal Rc7c2]} 27. R5b3 h5) 27. R5b3 $2 {[%mdl 8192]} (27. Rxa5 $15 Qd3 28. Rab5) 27... fxg3 $19 28. hxg3 h4 29. Rf3 Qe4 30. Nd2 $2 (30. Rd1) 30... Qc2 31. Qf4 hxg3 32. Rxg3 Rxg3+ 33. fxg3 Qc5+ 34. Qf2 Qxa3 35. Nf3 Qd3 36. Ra1 Qc3 37. Ra4 Bf5 38. Rh4 Rd8 39. Qb6 (39. Rf4 $142 Bg6 40. Qd4) 39... Qc7 ({Less strong is} 39... Qxf3 40. Qxd8+ Bc8 41. Qg5 $15) 40. Qb2 (40. Qxc7+ {is a better defense.} Kxc7 41. Kf2) 40... Be4 41. Nd4 Rg8 42. Kh2 f6 {[%cal Bf7f6,Bf6e5][%mdl 32]} 43. Rh6 Qg7 {[%csl Gg8][%cal Rg7g3]} 44. Rh3 fxe5 45. Nc6+ Ka8 46. Qb6 bxc6 47. Qxc6+ Qb7 48. Qe6 Qb2+ {Precision: White = 20%, Black = 63%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Tirelli, Mauro"]
[Black "Yankelevich, Lev"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "2201"]
[BlackElo "2447"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,126,18,18,14,15,22,25,26,31,21,28,22,27,20,34,14,20,26,21,14,18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-5,-5,-5,-5,-5,-5,-5,-6,-5,0,0,0,0,21,12,41,41,35,27,36,29,49,0,0,0,0,0,0,-8,-8,-12,-12,-21,-18,-18,-8,-8,-8,-8,-8,-8,-8,-9,0,0,0,-39,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-29987,-29988,-29990,-4134]} 1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. c4 g6 5. Nf3 d6 6. d4 {A01: Nimzowitsch-Larsen Opening} exd4 7. Nxd4 (7. exd4 Bg7 8. d5 Ne7 9. h3 O-O 10. Be2 c6 11. dxc6 Nxc6 12. O-O d5 13. Na3 {1-0 (44) Nakamura,H (2775)-Anand,V (2785) Dubai 2014}) 7... Nxd4 8. Bxd4 {White has an edge.} Bg7 9. Be2 O-O 10. O-O Be6 11. Nc3 d5 12. cxd5 $146 ({Find the theoretical novelty and annotate with similar games:} 12. c5 c6 13. Bf3 {½-½ (22) Cvek,R (2442)-Plachetka,J (2395) Baden 1999}) 12... Nxd5 13. Bxg7 Kxg7 14. Nxd5 Qxd5 15. Rc1 c6 16. Qc2 Qe5 17. Rfd1 Rfd8 18. Bc4 Bg4 19. Be2 Bf5 20. Bd3 Bg4 21. Be2 Bf5 22. Bd3 Rxd3 23. Rxd3 Bxd3 24. Qxd3 $11 {[%mdl 4096] Endgame KQR-KQR} Qb2 25. Qc2 Qxc2 26. Rxc2 {KR-KR} a5 (26... Rd8 {keeps more tension.} 27. g3 Rd1+ 28. Kg2 Kf6 29. f4 Ke6) 27. Kf1 a4 28. b4 a3 29. Rc3 Ra4 30. Rb3 Kf6 31. Ke2 Ke5 32. Kd3 b5 33. f4+ Kd6 34. g4 f5 35. h3 Kd5 36. Rb1 c5 37. bxc5 Kxc5 38. gxf5 gxf5 39. Rb3 b4 {White should prevent ...Ra6.} 40. e4 fxe4+ 41. Kxe4 Ra7 {[#] ...Re7+ is the strong threat.} 42. Rb1 $1 Re7+ 43. Kd3 Rg7 44. f5 Rg3+ 45. Ke4 Kd6 46. Rxb4 Rxh3 {aiming for ...Rh4+.} 47. Rb6+ (47. Rd4+ {with more complications.} Ke7 48. Rd2 Kf6 49. Rd6+ Kg5 50. Ra6) 47... Ke7 48. Rb7+ Kf6 49. Rb6+ Kg5 50. Ra6 Rc3 51. Kd4 Rf3 52. f6 Kg6 53. Ra7 h5 54. Ke4 Rxf6 55. Rxa3 h4 56. Rf3 Ra6 57. a3 Kg5 58. Rf8 Kg4 59. Rg8+ Kh3 60. Kf3 Rxa3+ 61. Kf2 Rg3 62. Rxg3+ $2 {[%mdl 8192] [#]} (62. Rh8 $11) 62... hxg3+ {[%cal Bh4g3,Bg3g2][%mdl 32]} 63. Kg1 g2 {Precision: White = 73%, Black = 67%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Abdumalik, Zhansaya"]
[Black "Alekseenko, Kirill"]
[Result "1/2-1/2"]
[ECO "C75"]
[BlackElo "2575"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,72,16,21,-7,36,17,15,14,27,27,35,14,25,26,58,47,54,55,55,55,53,50,52,46,42,50,83,52,59,63,60,61,61,59,73,66,87,43,37,29,36,0,42,41,49,42,43,41,26,25,112,113,114,25,139]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7 5. c3 d6 6. d4 Bd7 7. O-O Ng6 8. Re1 Be7 9. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3][%mdl 32]} O-O 10. Nf1 exd4 11. Nxd4 {C75: Ruy Lopez: Deferred Steinitz: 5 c3 Bd7 6 d4 without ...g6} Bg5 $146 ({Predecessor:} 11... Bf6 12. Nxc6 bxc6 13. Ng3 Rb8 14. Nh5 Be7 15. f4 Re8 16. Bb3 Bf8 17. Ng3 a5 18. Be3 d5 {0-1 (37) Ashwin,J (2127)-Safin,S (2528) Mumbai 2004}) 12. Ne3 Re8 13. Bc2 {The position is equal.} Nce5 14. Ndf5 Bc6 15. g3 Bxe3 $1 16. Nxe3 Qc8 {[#] White must now prevent ...Nh4!} 17. f4 Nd7 18. Nd5 Bxd5 19. Qxd5 Nf6 20. Qd1 Re7 21. Qf3 $1 Qe8 22. a4 a5 23. Bd2 Qd7 24. Re2 Rae8 25. Rae1 Qc6 26. Kg2 Nd7 27. Be3 Nb6 28. Bxb6 Qxb6 29. h4 {[%cal Bh2h4,Bh4h5,Bh5h6][%mdl 32]} Nf8 30. h5 Nd7 31. h6 g6 32. Qd3 Qc5 33. Qd4 {[%csl Gh6][%cal Rd4g7] [#]} f6 34. Qd2 Kf8 (34... Qc4 $11) 35. b4 $16 Qc4 36. Bd3 ({But not} 36. bxa5 Ra8 $14) (36. Bb1 $16) 36... Qe6 {Precision: White = 64%, Black = 43%.} (36... Qb3 $11) 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3"]
[White "Vovk, Ilja"]
[Black "Thybo, Jesper Sondergaard"]
[Result "1/2-1/2"]
[ECO "D38"]
[BlackElo "2464"]
[Annotator "TA"]
[PlyCount "40"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,40,26,25,23,43,46,50,47,35,32,39,37,41,30,29,32,36,33,31,30,31,39,37]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. cxd5 exd5 5. Nc3 Bb4 6. Bg5 h6 7. Bxf6 Qxf6 8. Qb3 Nc6 9. e3 O-O 10. Be2 Be6 11. O-O {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4)} Rfd8 $146 ({Predecessor:} 11... Bxc3 12. Qxc3 Rfc8 13. b4 Ne7 14. a4 a5 15. bxa5 c5 16. Rfb1 Nf5 17. Qd2 c4 18. Qc3 Nd6 {½-½ (47) Petran,P (2425)-Holzmann,H (2215) Balatonbereny 1997}) 12. a3 Bxc3 13. Qxc3 Rdc8 14. Rfc1 Ne7 15. Qb4 b6 16. Ba6 c5 $1 {[%cal Rc5b4]} 17. dxc5 bxc5 18. Qa5 Rcb8 {[#] Hoping for ...c4.} 19. Qxc5 Rxb2 20. Qd4 Qxd4 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3.10"]
[White "Mu, Ke"]
[Black "Kunin, Vitaly"]
[Result "1-0"]
[ECO "D25"]
[WhiteElo "2411"]
[BlackElo "2551"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,147,19,26,15,30,15,10,18,27,0,30,30,34,47,36,0,0,0,0,0,0,0,10,0,-4,-22,0,0,0,0,0,0,0,1,1,0,0,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-17,-38,-88,0,-5,0,0,0,-22,0,-6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,12841,12841,12841,12842,12842,12843,12843,12843,12844,12842,12842,12843,12843,12843,12844,12189,12846,12845,12845,12846,12846,12847,12847,12847,12848,12848]} 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. Nc3 Nc6 7. h3 Bh5 8. Be2 Bd6 9. O-O O-O 10. b3 a6 11. Bb2 Qe8 {LiveBook: 22 Games} 12. Ng5 $146 {D22: Queen's Gambit Accepted: 3 Nf3 a6 4 e3} (12. Ne5 $5 Bxe2 13. Nxe2 $14) ({Predecessor:} 12. Ne5 Bxe2 13. Nxe2 Rd8 14. Qb1 Nd5 15. e4 Nde7 16. Nc4 f5 17. Nxd6 cxd6 18. Nf4 Qf7 19. d5 exd5 20. exf5 Nxf5 {0-1 (48) Romanishin,O (2474)-Damaso,R (2438) Figueira da Foz 2015}) 12... Bg6 13. Bd3 Bxd3 14. Qxd3 {The position is equal.} Nb4 15. Qd2 (15. Qb1 {feels hotter.} h6 16. Nf3 c5 17. dxc5 Bxc5 18. a3) 15... h6 16. Nge4 Nbd5 17. Nxd6 cxd6 18. Rfe1 Nxc3 19. Bxc3 Qd7 (19... Ne4 $5 {[%cal Re4d2]} 20. Qd3 Nxc3 21. Qxc3 Qd7 $11) 20. Rac1 Rfc8 21. Bb4 d5 22. Ba3 Ne4 {[%cal Bf6e4,Be4g3,Bg3f5][%mdl 32]} 23. Qb2 Rxc1 24. Rxc1 Rc8 25. f3 Ng3 26. Kf2 Nf5 27. Rxc8+ Qxc8 28. e4 Nh4 29. g3 Ng6 30. Qc1 Qd8 31. Qc5 b6 32. Qc3 h5 33. h4 dxe4 34. fxe4 Nxh4 35. gxh4 Qxh4+ 36. Ke3 Qg3+ 37. Kd2 Qg2+ 38. Kd3 Qf3+ 39. Kd2 Qxe4 40. Qc8+ Kh7 41. Qxa6 Qf4+ 42. Kc3 h4 43. Qd3+ f5 44. Kc2 Qh2+ 45. Kc3 Qxa2 (45... h3 $1 $17 46. Qf3 Kh6) 46. Bd6 $11 Qa1+ 47. Kc2 $1 Qa2+ 48. Kc3 Qa1+ 49. Kc2 $1 Qh1 {Threatens to win with ...Qc6+.} (49... Qa8 $5 {[%cal Ra8c6]} 50. Be5 Qg2+ 51. Kd1 Qd5 $15) 50. Be5 Qg2+ 51. Kc3 h3 {aiming for ...h2.} 52. d5 h2 {[#]} ({Don't play} 52... Qxd5 $6 53. Qxh3+ Kg8 54. Qg3 $16) 53. Bxh2 $1 {[%mdl 512]} Qxh2 {[%mdl 4096] Endgame KQ-KQ} 54. d6 Kg6 {Strongly threatening ...Kf7.} 55. d7 Qc7+ 56. Kd2 Qd8 57. Qd6 Kf7 58. Ke2 g5 (58... e5 $5) 59. Kf3 {[#]} e5 $1 60. Kf2 (60. Qxe5 Qxd7) 60... g4 61. Kg3 Qh8 $2 {[%mdl 8192]} (61... f4+ $11 62. Kxg4 Qg8+ 63. Kf5 Qh7+ 64. Kxe5 Qh5+ 65. Ke4 Qh1+ 66. Kf5 Qh5+ 67. Ke4 Qh1+ 68. Kf5 Qh5+ 69. Ke4) 62. d8=Q $18 {White wants to mate with Q8e7+.White is clearly winning.} Qh3+ 63. Kf2 {[%csl Gd6][%cal Rd8f8]} Qf3+ 64. Ke1 $1 {[%csl Gd6][%cal Rd8f8]} Qe3+ 65. Kd1 $1 {[%csl Gd6][%cal Rd8f8]} Qxb3+ 66. Kc1 {[%csl Gd6][%cal Rd8f8]} Qc3+ 67. Kb1 $1 {[%csl Gd6][%cal Rd8f8]} Qb3+ 68. Ka1 $1 {[%csl Gd6][%cal Rd8f8]} Qc3+ 69. Ka2 $1 {[%csl Gd6][%cal Rd8f8]} Qc4+ 70. Ka3 {[%csl Gd6][%cal Rd8f8]} Qc3+ {[#]} 71. Ka4 $1 {[%csl Gd6][%cal Rd8f8]} Qc4+ {[#]} 72. Qb4 $1 {[%cal Rb4c4]} Qc6+ 73. Kb3 {Qbe7+ would kill now.} Qf3+ 74. Qc3 {Precision: White = 70%, Black = 54%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3.14"]
[White "Sreeves, Clement"]
[Black "Ladva, Ottomar"]
[Result "1/2-1/2"]
[ECO "B47"]
[WhiteElo "2406"]
[BlackElo "2532"]
[Annotator "TA"]
[PlyCount "153"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,152,0,3,0,8,7,6,7,49,43,39,43,70,0,0,-10,36,47,39,0,292,274,310,259,433,464,491,490,443,470,507,470,435,429,481,467,423,376,312,245,245,245,268,225,561,529,679,675,670,617,579,427,562,534,564,513,458,468,475,518,497,497,581,481,696,695,606,519,692,691,692,686,692,690,671,656,624,594,761,470,916,792,730,468,461,427,437,381,337,0,343,309,320,215,215,208,302,302,301,233,207,110,108,0,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. f4 a6 7. Nxc6 Qxc6 8. Bd3 b5 9. Qe2 Bb7 10. Bd2 Bc5 11. O-O-O {B47: Sicilian: Taimanov: 5 Nc3 Qc7 6 f4, 6 g3 and 6 Be2} Ne7 12. a3 O-O 13. Rhf1 f5 14. g4 d5 {[%cal Rd5e4] LiveBook: 3 Games} 15. exd5 exd5 ({Of course not} 15... Nxd5 16. Nxd5 exd5 17. Bxf5 $14) 16. gxf5 Nxf5 {[#]} 17. Qg4 $146 ({Predecessor:} 17. Bxf5 Rxf5 18. Qd3 Rh5 {½-½ (88) Bachmann,A (2598)-Swapnil,S (2438) Dubai 2014}) 17... Bc8 {[%cal Bb7c8,Bc8e6,Be6g4][%mdl 32]} (17... Qg6 $5 {[%cal Rg6g4]} 18. Qh3 Rad8 $11) 18. Rfe1 g6 19. Qg2 Be6 {[#]} 20. Ne4 $1 {[%mdl 512]} Nh4 $11 (20... dxe4 21. Bxe4) 21. Qh1 Bg4 22. Nxc5 {Be2 is the strong threat.} Bxd1 23. Ne6 Rfe8 $2 {[%mdl 8192]} (23... Bf3 $1 $11 24. Qf1 Be4 25. Nxf8 Rxf8) 24. Nd4 $18 Rxe1 25. Qxe1 (25. Nxc6 $2 {loses.} Rxh1 26. Ba5 Bg4+ 27. Kd2 Rxh2+ 28. Ke3 Nf5+ 29. Bxf5 Re8+ 30. Kd4 Bxf5 $19) 25... Qf6 $2 (25... Nf3 {was worth a try.}) 26. Kxd1 Rf8 27. Qe5 Qxe5 28. fxe5 Rf2 29. h3 Rh2 30. Bf1 Nf5 31. Nxf5 gxf5 32. Bg5 Kf7 33. h4 Ke6 {[#]} 34. Bf6 $1 f4 35. Bd3 f3 $2 (35... h6 36. Bg6 f3) 36. Ke1 h6 37. b4 Rg2 38. Kf1 Rh2 39. Bg6 d4 40. Be4 Re2 41. Bxf3 Rxc2 42. Bg4+ Kf7 43. Bd8 {And now e6+ would win.} Ke8 44. Bb6 d3 {Threatening ...Rc1+.} 45. Ke1 Rh2 (45... Rc4 $142) 46. h5 Rg2 47. Bf5 Re2+ 48. Kd1 Rxe5 49. Bxd3 Kf8 50. Bg6 Kg8 51. Kd2 Rg5 52. Kd3 Rg2 53. Be3 Ra2 (53... Kg7 $142 54. Be4 Ra2) 54. Bc1 Kg7 55. Kc3 Rh2 56. Be3 Rh4 57. Bd4+ Kg8 58. Be3 Kg7 $1 59. Bc5 Rh3+ 60. Kb2 Rh2+ 61. Kc1 Rh1+ (61... Rh3 $142 62. Bd4+ Kf8) 62. Kd2 Rh2+ 63. Kd3 Ra2 64. Bd4+ (64. Bb6 $18) 64... Kg8 $16 65. Be4 ({White should try} 65. Bc3 $16) 65... Rxa3+ $11 {The position is equal.} 66. Bc3 (66. Kc2 $5 {[%cal Re4d5]} a5 67. Bd5+ Kh7 68. bxa5 Rxa5 69. Bf7 $16) 66... a5 $1 {[%cal Ra5b4] White must now prevent ...axb4.} 67. Kc2 ({But not} 67. bxa5 $2 b4 $19) (67. Bd5+ {is more complex.} Kh7 68. Kd4 Rxc3 69. Kxc3 axb4+ 70. Kxb4) 67... Rxc3+ 68. Kxc3 axb4+ {[%mdl 4096] Endgame KB-K3P} 69. Kd4 b3 70. Ke5 Kg7 71. Kf5 b2 72. Bb1 b4 73. Ke6 b3 74. Ke7 Kh8 75. Kf6 Kg8 76. Kg6 Kh8 $1 77. Kf7 $2 {[%mdl 8192] Precision: White = 68%, Black = 53%.} (77. Kf5) 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.08"]
[Round "3.33"]
[White "Nikitenko, Mihail"]
[Black "Kotsur, Pavel"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "2369"]
[BlackElo "2558"]
[Annotator "TA"]
[PlyCount "185"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,185,0,0,0,1,0,0,0,0,0,0,24,8,108,105,92,104,85,28,95,67,87,53,35,10,14,9,10,18,10,10,19,0,0,6,10,0,0,0,9,-22,-8,-364,-360,-340,-326,-449,-369,-400,-482,-481,-475,-473,-475,-472,-464,-456,-443,-436,-434,-416,-402,-398,-276,-352,-347,-267,-249,-261,-261,-257,-247,-245,-235,-252,-233,-239,-161,-260,-260,-320,-244,-1285,-1467,-994,-832,-1062,-967,-617,-1495,-1529,-1519,-1370,-1446,-1360,-1014,-1377,-597,-483,-436,-457,-1154,-533,-411,-327,-19,-410,-46,-35,-8,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd7 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5 Qxd5} (6... Qd8 7. O-O Nc6 8. Nb3 a6 9. Nbxd4 Nxd4 10. Nxd4 Qc7 11. Bb3 Bd6 12. Qh5 Nf6 13. Qh4 Bd7 14. Bg5 O-O-O 15. Rad1 h6 16. Bxf6 gxf6 {½-½ (24) Navara,D (2737)-Harikrishna,P (2737) Biel 2017}) 7. O-O Nc6 8. Nb3 Nf6 9. Qe2 a6 10. a4 Bd6 11. Rd1 {LiveBook: 24 Games} e5 12. Nbxd4 Nxd4 13. Rxd4 Qe7 14. Rxd6 Qxd6 {[#]} 15. b3 $146 Be6 16. Ba3 Qc7 (16... Bxc4 $11 {remains equal.} 17. Qxc4 Qd5) 17. Nxe5 O-O-O 18. Bxe6+ $1 fxe6 19. Nc4 (19. Bb2 $16) 19... Qc6 (19... Rhe8 $11) 20. Bb2 Qe4 21. Qxe4 Nxe4 22. Bxg7 (22. f3 $5 {[%cal Rf3e4]} Nd2 23. Bxg7 $14) 22... Rhg8 23. Be5 {[%cal Rc4b6]} b5 24. axb5 axb5 25. Ne3 {Strongly threatening Ra7.} Kb7 $1 26. f3 Nd6 27. Kf2 Nf5 28. Nf1 Rc8 29. c3 Ra8 30. Rxa8 Rxa8 $11 {[%mdl 4096] Endgame KRN-KBN} 31. g4 $2 {[%mdl 8192]} (31. Bf6 $1 $11 {and White is okay.}) 31... Ra2+ $19 32. Ke1 Nh4 33. f4 {and the idea Nd2 leaves White hopeful.} Nf3+ 34. Kd1 Nxe5 35. fxe5 {KR-KN} Kc6 36. Nd2 Kd5 37. Ke2 Kxe5 38. Ke3 Rc2 39. Nf3+ Kd5 40. Kd3 Rc1 41. h4 Rd1+ 42. Ke2 Rh1 43. Ke3 Rb1 44. c4+ Kd6 ({Not} 44... bxc4 45. bxc4+ Kd6 46. h5 $17) 45. Nd2 Rg1 46. Kf4 b4 $1 47. Ne4+ Ke7 48. Nc5 Rh1 49. h5 (49. Nd3 $142) 49... h6 50. Nd3 Rb1 51. Nxb4 $2 (51. Nc5) 51... Rxb3 52. Nc6+ Kf6 $1 53. Ne5 Rb1 54. Nd7+ Ke7 55. Ne5 Rd1 56. Ke4 {[#]} Kf6 $1 57. Nf3 Rf1 58. Ke3 Ra1 (58... e5 $142 59. c5 Rc1) 59. Kd4 Rc1 60. Ne5 {[#]} Rd1+ $1 61. Nd3 Rd2 62. Ke3 Rg2 $2 (62... Ra2 $19 63. Kf4 Ra1) 63. Kf4 $2 {[%mdl 8192]} (63. Nf2 $1 $11) 63... Re2 $2 ({Black should try} 63... Rc2 $19 64. Ne5 Rd2) 64. Nc5 $1 $15 e5+ 65. Kf3 {The position is equal.} Rc2 {And now ...Rc3+ would win.} 66. Ne4+ Ke7 (66... Ke6 $5 {[%cal Rc2c4]} 67. g5 hxg5 68. Nxg5+ Kf5 $19) 67. c5 Rc4 68. g5 hxg5 {[%cal Bh6g5,Bg5g4][%mdl 32] ...g4+! is the strong threat.} 69. h6 g4+ 70. Kg3 Kf8 ({Wrong is} 70... Rxe4 $2 71. h7 $18) 71. Nf6 Kf7 72. Nd7 Kg8 73. Nxe5 Rxc5 74. Nxg4 Kh7 75. Kf4 Kg6 76. Ne5+ Kxh6 77. Kf5 Ra5 78. Kf6 Ra6+ 79. Kf5 Kg7 80. Ng4 Ra1 81. Ne5 Rf1+ 82. Ke6 Rf4 83. Nd3 Rf6+ 84. Ke5 Kf7 85. Nf4 Rh6 86. Kf5 Rh1 87. Ke5 Ra1 88. Kd6 Re1 89. Nd5 Re4 90. Nc3 Re6+ 91. Kd5 Ke7 92. Ne4 Rh6 93. Ke5 {Precision: White = 51%, Black = 72%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Sasikiran, Krishnan"]
[Black "Lugovskoy, Maxim"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "2688"]
[BlackElo "2440"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,46,-7,-2,-16,25,16,22,0,0,0,0,-5,-2,-22,-16,-19,0,0,0,12,59,0,27,-53,0,-72,-73,-66,-38]} 1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 b6 5. c3 Be7 6. Be2 O-O 7. O-O c5 8. e5 {C00: French: Unusual White 2nd moves} (8. Re1 Qc7 9. Bf1 Nc6 10. a3 a5 11. a4 Ba6 12. Qc2 Rac8 13. exd5 exd5 14. Nb1 Bd6 15. Na3 Ng4 {½-½ (59) Orlov,A (2535)-Bluebaum,M (2513) Dortmund 2013}) 8... Nfd7 9. d4 Ba6 10. Bxa6 Nxa6 {[%cal Bb8a6,Ba6c5,Bc5e4][%mdl 32] LiveBook: 3 Games} 11. Re1 (11. Qe2 $5 {[%cal Re2a6]} Qc8 12. b3 $11) 11... cxd4 12. Nxd4 $146 ({Find the theoretical novelty and annotate with similar games:} 12. cxd4 Rc8 13. a3 Qc7 14. Qe2 Nab8 15. Nf1 {0-1 (36) Jensen,I (1986)-Stojanovski,S (2191) Helsingor 2012}) 12... Nac5 13. N2b3 Qc7 14. Bf4 Rfe8 15. Re3 Nf8 16. Qh5 Ng6 $36 {[%mdl 2048] Black has some pressure.} 17. Bg3 Ne4 18. f3 Nxg3 19. hxg3 b5 {[%cal Bb6b5,Bb5b4][%mdl 32]} 20. f4 ({White should try} 20. Nxb5 $14 Qb6 21. N5d4) 20... a5 21. Rf1 (21. Nxb5 $11 Qb6 22. N3d4) 21... a4 (21... b4 $15) 22. Nc1 (22. Nxb5 $11 {keeps the balance.} Qd7 23. N3d4) 22... b4 $17 23. Nce2 a3 {Precision: White = 19%, Black = 38%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Shirov, Alexei"]
[Black "Vovk, Ilja"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2648"]
[BlackElo "2307"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,75,0,20,23,24,32,69,49,69,57,128,129,129,129,131,123,161,141,160,157,157,121,121,120,151,145,171,178,173,175,232,219,212,177,179,166,164,158,187,134,293,296,277,202,301,310,293,295,290,160,474,508,497,479,600,605,672,487,475,464,594,464,444,428,503,491,840,751]} 1. e4 c6 {[%cal Bc7c6,Bc6c5][%mdl 32]} 2. d4 d5 3. e5 c5 4. Ne2 Nc6 5. c3 a6 (5... Bg4 6. h3 Bxe2 7. Bxe2 e6 8. O-O Qb6 9. dxc5 Bxc5 10. b4 Be7 11. Be3 Qc7 12. f4 Nh6 13. Na3 {½-½ (44) Vachier Lagrave,M (2796)-Anand,V (2786) Stavanger 2017}) 6. f4 $146 {B12: Caro-Kann: Advance Variation} ({Predecessor:} 6. Be3 Nh6 7. Bxh6 gxh6 8. a3 Bg4 9. f3 Bh5 10. b4 cxd4 11. cxd4 e6 12. Nbc3 f6 13. Ng3 {½-½ (45) Fernandez Cardoso,A (2445)-Macieja,B (2529) Leon 2017}) 6... Nh6 7. dxc5 Nf5 8. Ng3 {White is slightly better.} h5 9. Bd3 g6 (9... Nxg3 $14 10. hxg3 Bg4) 10. Nxf5 $16 Bxf5 11. Bxf5 gxf5 12. Be3 Qd7 13. Nd2 Bg7 14. Nf3 f6 15. Bd4 fxe5 16. fxe5 Nxd4 17. cxd4 Qb5 18. Qc2 Bh6 19. a4 Qb4+ (19... Qd7 {was called for.} 20. b4 e6) 20. Qc3 $18 a5 21. Qxb4 axb4 22. a5 Kd7 23. Ra4 Kc6 {[#]} 24. Rxb4 (24. Ke2 $1 $18) 24... Rxa5 $2 (24... b5 $16 25. e6 Rxa5 26. Ne5+ Kc7) 25. Rb6+ Kc7 26. Kf2 Ra6 (26... h4 {keeps fighting.} 27. Rd1 (27. Nxh4 Be3+ 28. Kxe3 Rxh4 $16) 27... h3 28. gxh3 Bf4) 27. Rxa6 bxa6 {[%mdl 4096] Endgame KRB-KRN} 28. Ra1 Rb8 29. Kg3 ({Better is} 29. Rxa6 $18 Bf4 30. Nh4) 29... Rxb2 $2 {[#]} (29... Rg8+ $16 30. Kh3 Kb7) 30. Rxa6 {White is clearly winning.} Be3 31. Ra7+ Kd8 32. e6 Re2 33. Rd7+ Ke8 34. Rxd5 Bf2+ 35. Kh3 Rxe6 36. Rxf5 Re4 37. c6 {[%cal Bc5c6,Bc6c7][%mdl 32]} Bxd4 (37... Kd8 $142 38. d5 Kc7 39. Rxh5 Kd6) 38. c7 {Precision: White = 90%, Black = 22%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Smirin, Ilia"]
[Black "Fedorovsky, Michael"]
[Result "1/2-1/2"]
[ECO "B72"]
[WhiteElo "2634"]
[BlackElo "2467"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,63,13,9,9,9,57,38,35,34,40,32,30,19,29,14,17,0,26,-33,-27,-28,-20,-47,-33,-72,-27,-33,-23,-27,-27,-29,-16,-18,-5,-8,0,-28,0,-18,9,-22,0,-10]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 O-O 8. Qd2 Nc6 9. O-O-O Ng4 10. Bxg4 Bxg4 11. f3 Bd7 12. h4 Ne5 {With the idea ...Nc4. B72: Sicilian Dragon: 6 Be3, lines with h3+Bc4 and sidelines} 13. b3 Qa5 14. Kb1 Rfe8 {White is slightly better.} 15. Nd5 Qxd2 16. Rxd2 {Black must now prevent Nc7.} Rac8 17. Ne2 b6 {[%cal Bb7b6,Bb6b5][%mdl 32] [#]} 18. Bd4 $146 ({Predecessor:} 18. h5 f5 19. Bg5 Bf8 20. hxg6 hxg6 21. exf5 Bxf5 {½-½ (67) Yu,Y (2615)-Motylev,A (2677) Beijing 2012}) 18... h5 19. Rf1 Bc6 (19... Bh6 $5 {[%cal Rh6d2]} 20. Be3 Bg7 $11) 20. Bb2 (20. a4 $11) 20... b5 $15 21. Re1 a6 22. Nd4 Bb7 (22... Bxd5 $5 23. exd5 Rc5 $11) 23. Rdd1 Rc5 (23... Bxd5 $5 24. exd5 Rc5 $15) 24. Ne3 Rc7 25. Ne2 {[%cal Bd4e2,Be2f4,Bf4d5][%mdl 32]} Rec8 26. Nf4 Kf8 27. Re2 Re8 28. Nfd5 Rcc8 (28... Bxd5 $5 29. Nxd5 Rcc8 $11) 29. Ba3 Kg8 30. Bb2 {The position is equal.} Kf8 31. Rf2 Kg8 32. Re2 {Precision: White = 41%, Black = 39%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Onischuk, Vladimir"]
[Black "Hambleton, Aman"]
[Result "1-0"]
[ECO "C15"]
[WhiteElo "2610"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,43,19,19,19,10,22,23,22,0,0,0,0,0,0,0,80,59,164,175,252,217,271,263,271,245,390,342,500,471,483,475]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Bd3 Nc6 6. a3 Bxc3+ 7. bxc3 Nf6 8. Ne2 O-O {C01: French: Exchange Variation} 9. O-O Bg4 10. f3 Bh5 {White has an edge.} 11. Ng3 Bg6 12. f4 {[#] f5 is the strong threat.} Bxd3 13. cxd3 Re8 $146 ({Predecessor:} 13... Ne7 14. f5 Kh8 15. Bf4 Neg8 16. Be5 {1-0 (40) Pablo Marin,A (2434)-Campos Moreno,J (2475) Mondariz 2002}) 14. f5 b5 (14... Nb8 $11) 15. Qb3 Qd7 (15... Nb8 $14) 16. Bg5 $18 Ng4 (16... Kh8 $142 17. Bxf6 (17. Qxb5 Ng4 $16) 17... gxf6 18. Qxb5 Qd6) 17. Rf4 ({Less strong is} 17. Qxb5 h6 $16) 17... Ne3 18. Rf3 Na5 19. Qb2 Ng4 (19... Nec4 $142 20. dxc4 Nxc4) 20. h3 h6 (20... f6 {was called for.} 21. Bf4 (21. hxg4 fxg5 22. f6 Rf8 $18) 21... Nh6 22. Bxh6 gxh6) 21. Bh4 Ne3 22. Qf2 {Precision: White = 86%, Black = 35%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Ovsejevitsch, Sergei"]
[Black "Lanka, Zigurds"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2596"]
[BlackElo "2434"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,54,19,0,1,0,0,0,0,0,0,0,0,0,-12,-11,0,0,0,-7,0,-15,0,-3,-7,-6,0,-17,-9,-7,-7,-6,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. g3 c5 6. Bg2 Bb7 7. a3 Bxd2+ 8. Qxd2 cxd4 {E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+} 9. Qxd4 (9. O-O Bxf3 10. exf3 Nc6 11. f4 O-O 12. b4 Rc8 13. Bb2 d6 14. Bxc6 Rxc6 15. Qxd4 Qc7 16. Rfc1 Rc8 17. b5 Rc5 18. a4 Ne8 19. Qe3 Qb7 20. Qd3 Qc7 21. Qe3 Qb7 22. Qd3 Qc7 23. Qe3 {½-½ (23) Wei,Y (2696)-Karjakin,S (2773) Bilbao 2016}) 9... Nc6 10. Qh4 {LiveBook: 7 Games. The position is equal.} Na5 {[#] aiming for ...Nb3.} 11. Bg5 Rc8 12. Rc1 $1 h6 13. O-O Rg8 $146 ({Predecessor:} 13... O-O 14. Bd2 Nb3 15. Rcd1 Nxd2 16. Rxd2 {½-½ (66) Stefanova,A (2524)-Kosteniuk,A (2497) Rostov on Don 2011}) 14. Bxf6 Qxf6 15. Qxf6 gxf6 16. Nd2 Bxg2 17. Kxg2 Ke7 18. e4 h5 19. Kh3 Rc7 20. Rc3 Nb7 21. Rfc1 a5 22. b3 Rgc8 23. Kh4 Nd6 24. b4 axb4 25. axb4 Nb5 26. Rd3 Nd6 27. Rdc3 Nb5 {Precision: White = 59%, Black = 65%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Kovchan, Alexander"]
[Black "Nesteretz, Anatoliy"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "2587"]
[BlackElo "2375"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,77,-32,-31,26,17,21,0,62,50,93,74,91,41,107,100,129,106,164,174,143,170,128,131,222,223,304,241,222,183,266,273,290,281,643,332,346,323,339,278,278,270,318,324,314,301,406,382,544,540,731,29]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Nf3 Ne7 8. a4 b6 9. Bb5+ Bd7 10. Bd3 Nbc6 11. O-O h6 12. Re1 O-O 13. Bf4 Ng6 {C19: French: 3 Nc3 Bb4: Main line: 7 Nf3 and 7 a4} 14. Bg3 cxd4 15. Nxd4 {LiveBook: 6 Games} Nxd4 (15... Na5 $15) 16. cxd4 $11 Qc3 $146 ({Predecessor:} 16... Qd8 17. Re3 Rc8 18. Qd2 a5 19. c3 Qe7 20. Bc2 Rc4 21. f4 {1-0 (60) Zontakh,A (2550)-Skomorokhin,R (2450) St Petersburg 1996}) 17. h4 Ne7 (17... Qxd4 $2 18. h5 $18) ({Black should play} 17... Kh8 $11) 18. Re3 $1 $14 Kh8 19. Bf1 Qc7 20. Bh2 Nf5 {[#]} (20... Rab8 $14) 21. Rh3 $1 $16 Qd8 22. h5 f6 (22... Ne7 $16) 23. Qd2 $18 Kg8 24. Raa3 fxe5 25. Bxe5 Be8 (25... Qg5 $16 {was worth a try.} 26. Qxg5 hxg5) 26. Bd3 a5 27. Bxf5 Rxf5 28. Rag3 $40 {[%mdl 128] [#] White threatens Qxh6 and mate. White has strong attack.} Rxe5 (28... Rg5 {was necessary.} 29. f4 Rxe5 30. fxe5 Kh8) 29. dxe5 {Strongly threatening Qxh6.} Kh8 30. Qd4 Rc8 $2 (30... Qc7 31. Rf3 Bf7) 31. Rc3 Rxc3 32. Rxc3 Bxh5 {[%mdl 4096] Endgame KQR-KQB} 33. Rb3 Qg5 34. Qe3 ({Don't play} 34. Qxb6 $6 Qc1+ 35. Kh2 Qxc2 $18) (34. Rxb6 Bf3 $16) 34... Qg4 35. Rxb6 ({Not} 35. Qxb6 Kh7 $18) 35... Bg6 36. f3 Qxa4 37. Rxe6 d4 (37... Kh7 {keeps fighting.} 38. c3 Qd1+ 39. Kh2 Qd3) 38. Qf4 {Threatening mate with Qf8+.} Qxc2 39. Qf8+ {[%mdl 32768] Precision: White = 77%, Black = 28%. . Loss on Time!?} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Alekseenko, Kirill"]
[Black "Popov, Mikhail"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2575"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,71,-14,-3,-5,8,8,6,10,11,4,28,20,25,20,24,31,29,27,37,32,156,101,322,298,319,318,314,308,350,304,527,514,527,518,491,359,355,354,336,344,348,366,345,344,343,346,401,365,472,383,392,310,376,261,589,599,598,606,661,653,832,831,1047,1037]} 1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Na6 5. e3 c6 6. Nc3 {D00: 1 d4 d5: Unusual lines} Qb6 (6... Bb4 7. Nge2 O-O 8. a3 Bd6 9. Ng3 Nc7 10. Bd3 Re8 11. Bxd6 Qxd6 {0-1 (42) Rapport,R (2717)-Wei,Y (2707) Yancheng 2016}) 7. a3 c5 8. Nf3 {The position is equal.} Bd7 9. Rb1 Nh5 10. Bg5 $146 ({Predecessor:} 10. Be5 f6 11. dxc5 Bxc5 {1-0 (49) Bortnyk,O (2552)-Miedema,D (2352) Schwaebisch Gmuend 2016}) 10... h6 11. Bh4 cxd4 12. Ne5 Nf6 13. exd4 Bd6 14. Bd3 Qxd4 {[#]} (14... Rc8 $14) 15. Bxf6 $40 {[%mdl 128] White wants a kill.} (15. Nxf7 $142 $1 Qxh4 16. Nxd6+ (16. Nxh8 Nc5 $16) 16... Ke7 17. Nxb7) 15... Bc5 $2 (15... Bxe5 $2 16. Ne2 $18) (15... gxf6 $16 16. Nxd7 Nc7) 16. Qh5 $18 {[%csl Ge5][%cal Rh5f7]} (16. Qf3 $6 Qxf2+ 17. Qxf2 Bxf2+ 18. Kxf2 gxf6 $18) 16... Qxf2+ 17. Kd1 {[%csl Ge5][%cal Rh5f7]} Qxf6 18. Rf1 g6 {[#] And now ...Qxf1+! would win.} 19. Nxg6 ({Stronger than} 19. Rxf6 gxh5 20. Nxd7 (20. Rxf7 O-O-O $15) 20... Kxd7 $15) 19... fxg6 $2 (19... Qg7) 20. Bxg6+ (20. Rxf6 $2 {too greedy.} gxh5 21. Kd2 Rg8 $19) 20... Ke7 21. Rxf6 Kxf6 22. Ke2 Raf8 23. b4 Bb6 24. Rf1+ Ke7 25. Qh4+ Kd6 {If Black can now play ...Rxf1 this consolidates a bit.} 26. Rxf8 Rxf8 27. Qxh6 Rf2+ 28. Ke1 Rxg2 29. Ne2 Rf2 30. c3 {[%cal Bc2c3,Bc3d4][%mdl 32]} Nc7 31. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Rf3 $2 (31... Rf6 {is a better chance.} 32. h5 Bf2+ 33. Kd1 e5) 32. Nd4 {White is clearly winning.} Bxd4 33. cxd4 Nb5 34. Qh8 Nc3 35. h5 Kc7 36. Qe5+ {Precision: White = 88%, Black = 29%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Brunello, Sabino"]
[Black "Nikitenko, Mihail"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2566"]
[BlackElo "2369"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,61,50,30,155,71,131,138,196,81,75,87,87,75,93,68,131,136,206,82,142,144,138,147,166,110,115,112,114,110,143,117,380,93,196,210,250,225,225,194,1454,1512]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 {[%cal Be7e6,Be6e5][%mdl 32]} 5. Nbd2 Nbd7 6. Bd3 Bd6 7. O-O O-O 8. e4 e5 9. cxd5 cxd5 10. Re1 Re8 {D05: Colle System with ...e6} (10... h6 11. exd5 exd4 12. Nc4 Nb6 13. Nxd6 Qxd6 14. Nxd4 Nbxd5 15. Bf1 Rd8 16. Nb5 Qb6 17. Qf3 Bd7 18. Nc3 Bc6 19. Nxd5 Rxd5 20. b3 Re5 21. Qc3 Ng4 22. Be3 Nxe3 23. Qxe5 {½-½ (23) Onischuk,A (2685)-Duda,J (2697) Khanty-Mansiysk 2017}) 11. exd5 exd4 12. Ne4 {LiveBook: 18 Games} Ne5 (12... Qb6 $11 {remains equal.}) 13. Nxe5 (13. Nxd4 $6 Bg4 $11) (13. Bg5 $142 $1) 13... Rxe5 $146 ({Black should try} 13... Bxe5 14. Bg5 Bf5) ({Predecessor:} 13... Bxe5 14. Bg5 Bf5 15. Nxf6+ gxf6 16. Bh6 Qd7 17. h3 Bd6 18. Qf3 Bxd3 19. Qxd3 Rxe1+ 20. Rxe1 {0-1 (26) Khurtsidze,N (2415)-Sahin,D (2155) Mersin 2016}) 14. Bg5 $1 $16 Rxd5 (14... Rxg5 $16 15. Nxg5 Bb4) 15. Qf3 (15. Bc4 $18 {has better winning chances.} Rf5 16. Qb3) 15... Bg4 16. Nxf6+ (16. Bxf6 $2 Qd7 $19) 16... gxf6 17. Qxg4 {Threatening mate with Bxf6+.} Rxg5 18. Qh3 Rg6 (18... h5 $14) 19. Rac1 {[%mdl 1024] White has strong compensation.} Qa5 (19... Bf8 $16 {keeps fighting.} 20. Bxg6 hxg6) 20. Qd7 (20. Bxg6 $18 hxg6 21. Rc8+ Rxc8 22. Qxc8+ Kg7 23. Re8) 20... Be5 (20... f5 $142) 21. Re2 Kg7 22. g3 Qb6 23. f4 ({Don't play} 23. Bxg6 $6 hxg6 24. Qe7 Rd8 $16) (23. Rc8 $18 Rxc8 24. Qxc8) 23... Bd6 24. Kf2 Rd8 25. Qf5 h5 26. h4 Rh6 $2 {[%mdl 8192]} (26... Rh8 $16 {might work better.}) 27. Kf3 $2 $40 {[%mdl 128] White goes for the king.} (27. g4 $1 $18 {and the rest is easy.}) 27... Bf8 {[#]} (27... Kf8 $16) 28. g4 $1 $18 {[%cal Bg3g4,Bg4g5][%mdl 32]} Qd6 29. Rg2 ({Resist} 29. gxh5 Kh8) 29... Kh8 {[#]} 30. g5 $1 {[%cal Rg5h6]} ({Less strong is} 30. gxh5 Qe6 $14) 30... Qe7 $2 (30... Rg6 31. gxf6 Qxf6) 31. Re2 {Precision: White = 49%, Black = 16%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Kotsur, Pavel"]
[Black "Sanders, Isaac B"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "2558"]
[BlackElo "2359"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,102,-22,-29,-8,-47,-53,-77,-93,-68,-64,-78,-77,-88,-64,-106,-13,-356,-8,-14,-5,-5,0,-4,-5,-18,-18,-10,-11,-10,-10,-10,-20,-12,0,0,0,0,0,0,0,0,12,12,12,12,12,13,37,12,18,0,0,0,0,0,34,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Bb3 d5 7. exd5 {C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack} Nxd5 8. Re1 (8. h3 a5 9. a3 Nd4 10. Nxd4 exd4 11. Re1 Ra6 12. Qf3 Re6 13. Rxe6 Bxe6 14. Nd2 c6 15. Ne4 a4 16. Bc4 {½-½ (30) Radjabov,T (2740)-Ponomariov,R (2733) Medias 2010}) 8... Bg4 9. c3 Bh5 10. h3 {LiveBook: 4 Games} Kh8 11. g4 Bg6 12. Nxe5 Nxe5 13. Rxe5 c6 $146 ({Predecessor:} 13... Nb6 14. d4 {0-1 (25) Goldshtein,Y-Meshkov,Y (2285) Smolensk 1982}) 14. Bxd5 Bd6 $1 {[%cal Rd6e5]} 15. Re1 cxd5 16. Qf3 Qh4 (16... f5 $17 {Strongly threatening ...fxg4.} 17. g5 Re8) 17. Qxd5 $2 {[%mdl 8192] [#]} (17. Be3 $11) 17... Rad8 $2 (17... Bh2+ $1 $19 {[%mdl 512]} 18. Kh1 (18. Kg2 $2 f5 $19) (18. Kxh2 Qxf2+) 18... Qxf2) 18. Bg5 $11 Qxh3 {( -> ...Bh2+)} 19. Qg2 $132 {[%mdl 2048] White is fighting back} Qxg2+ 20. Kxg2 Rde8 21. Be3 Bxd3 22. Rd1 Be4+ 23. f3 Bc6 24. Rxd6 Rxe3 25. Nd2 h6 26. Kf2 Re7 27. Nb3 f5 28. gxf5 Rxf5 29. Nd4 Rd5 (29... Rh5 {is more complex.} 30. Nxc6 bxc6 31. Kg3 Rg5+ 32. Kf2 Rh5) 30. Nxc6 bxc6 31. Rxd5 cxd5 {[%mdl 4096] Endgame KR-KR} 32. Rd1 Re5 33. Rd4 Kh7 34. b4 Kg6 35. f4 Rf5 36. b5 Kh5 37. Kg3 g5 $1 {The position is equal.} 38. a4 {Black must now prevent a5.} Rf7 39. fxg5 hxg5 40. Rb4 Rc7 41. Rb3 Kg6 42. a5 Kf5 43. Kf3 Ke5 44. Kg4 Kd6 45. Kxg5 Kc5 46. Kf6 Rb7 47. Ke6 (47. b6 $5) 47... Rxb5 48. Rxb5+ Kxb5 49. Kxd5 {White threatens c4+ and mate.} Kxa5 50. c4 {Intending c5 and mate.} Kb6 51. Kd6 {c5+ would kill now.} Kb7 {Precision: White = 54%, Black = 63%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Kunin, Vitaly"]
[Black "Tomilova, Elena"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2551"]
[BlackElo "2346"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,115,31,33,27,31,30,42,24,25,16,20,23,55,8,24,21,20,16,47,45,69,65,74,61,77,76,79,80,155,162,186,186,185,170,183,171,156,145,176,193,186,194,207,197,291,276,321,319,400,339,316,310,305,286,29964,29965,29963,29966,29962,29964,29958,29953,2235,1681,29966,29966,29972,29974,29972,29973,29973,29974,29976,29977,29980,29981,29981,29982,29982,29983,29986,29987,29991,29992,29992,29993,29993,29994,29994,29995,29995,29993,29995,29996]} 1. g3 d5 2. Nf3 Bg4 3. Bg2 Nd7 4. d4 c6 5. O-O Ngf6 6. Nbd2 e6 7. Re1 Be7 8. e4 dxe4 9. Nxe4 Nxe4 10. Rxe4 Nf6 11. Re1 h6 12. c3 O-O 13. Qb3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} Qc8 (13... Qb6 14. Ne5 Bf5 15. Nc4 Qxb3 16. axb3 g5 17. h4 Nd5 18. hxg5 hxg5 19. Na5 Rab8 20. Bd2 Rfd8 {½-½ (59) Pantsulaia,L (2604)-Aryan,C (2447) Dubai 2016}) 14. Ne5 Bf5 15. Bd2 $146 {White is slightly better.} ({Predecessor:} 15. a4 Nd7 16. Nc4 Bd3 17. a5 a6 18. Ne3 Rd8 19. c4 Bg6 20. d5 Nc5 {0-1 (29) Jacobsen,H (1918)-Simonsen,H (2184) Klaksvik 2014}) 15... Rd8 16. h3 Nd5 17. c4 Nf6 18. Bc3 Qc7 19. Rad1 a5 {[#] Strongly threatening ...a4.} 20. Rd2 Bb4 21. a3 $36 {[%mdl 2048] White is pushing.} Bxc3 22. bxc3 Nd7 23. Rb2 Rdb8 24. Nxd7 Qxd7 25. c5 e5 (25... Qc7 $142) 26. Rxe5 $16 Bxh3 27. Bxh3 Qxh3 28. Re7 Qf5 29. Rbe2 ({Don't play} 29. Rxb7 $6 Rxb7 30. Qxb7 Re8 $16) 29... a4 30. Qb6 Qf3 31. R2e3 {[%cal Be2e3,Be3f3,Bf3f7][%mdl 32]} Qd1+ 32. Kg2 Qb3 33. Qc7 Rc8 (33... Qd5+ $142 34. Kg1 Rf8) 34. Qxb7 $18 Qd5+ 35. Rf3 Rf8 36. Re5 Qb3 37. Qxc6 Qxa3 {[#]} 38. Rxf7 $3 {[%mdl 512] Threatens to win with Ree7.} Qxc3 $2 (38... Qa2 $18 39. Rxg7+ Kxg7 40. Re7+ Rf7 41. Rxf7+ Kxf7) (38... Rxf7 39. Qxa8+) 39. Ref5 Qc4 40. Rxf8+ Rxf8 41. Rxf8+ Kxf8 {[%mdl 4096] Endgame KQ-KQ} 42. Qd6+ Kf7 43. c6 a3 44. Qxa3 {White mates.} ({Less strong is} 44. c7 a2 $18) 44... Qxc6+ 45. Qf3+ Qf6 46. Qxf6+ Kxf6 {K3P-KPP} 47. f4 Kf5 48. Kf3 h5 49. Ke3 g5 50. fxg5 Kxg5 {KPP-KP} 51. Ke4 Kg4 52. d5 Kxg3 {KP-KP} 53. d6 h4 54. d7 h3 55. d8=Q h2 56. Qd1 Kg2 57. Qf3+ Kg1 58. Ke3 {Precision: White = 85%, Black = 35%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Kantans, Toms"]
[Black "Krykun, Yuriy"]
[Result "1/2-1/2"]
[ECO "C95"]
[WhiteElo "2541"]
[BlackElo "2350"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 37,84,26,31,0,0,-22,-4,-18,-1,-22,-14,-58,-16,-51,0,-94,-87,-153,-150,-135,-138,-118,-114,-245,-231,-341,-338,-420,-427,-422,-404,-386,-380,-328,-315,-367,-368,-385,-276,-404,-388,-502,-315,-332,-327,-264,-333,-326,-316]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. a4 c5 16. d5 c4 17. Bg5 Nc5 {C95: Closed Ruy Lopez: Breyer Variation with 10 d4} (17... h6 18. Be3 Nc5 19. Qd2 h5 20. Bg5 Bg7 21. Rf1 Qc7 22. Bh6 Bh8 23. Ng5 Nh7 24. Nxh7 Kxh7 25. Be3 Qe7 26. f4 exf4 27. Bxf4 Kg8 {1-0 (51) Zherebukh,Y (2605)-Caruana,F (2817) Saint Louis 2017}) 18. Qd2 Be7 19. Bh6 Nfd7 {LiveBook: 22 Games. White has an edge.} 20. h4 bxa4 $146 ({Wrong is} 20... Bxh4 $2 21. Nxh4 Nb6 22. a5 $18) ({Predecessor:} 20... Nb6 21. axb5 axb5 22. Rxa8 Bxa8 23. h5 Nba4 24. Rb1 Bb7 25. Bg5 Bxg5 26. Nxg5 Qf6 27. Bxa4 bxa4 28. Nf3 Qf4 29. Qe2 {½-½ (29) Braun,C (2420)-Antonsen,M (2475) Gothenburg 2015}) 21. Ra3 Nb3 ({Don't go for} 21... Bxh4 $2 22. Nxh4 a5 23. Bg5 $18) 22. Qe3 Ndc5 ({Avoid the trap} 22... Bxh4 $2 23. Nxh4 Ndc5 24. Ngf5 $18) 23. h5 Bc8 24. Nh2 Bh4 25. Rf1 Ra7 (25... Bd7 $15) 26. Kh1 (26. Nf3 $11 Bf6 27. Nd2) 26... Bf6 27. f4 {[#]} (27. Nf3 $142) 27... exf4 $1 $17 28. Rxf4 Bg5 29. Bxg5 Qxg5 30. Qf3 (30. Ngf1 $17) 30... Rae7 31. Nhf1 (31. Ng4 {keeps fighting.} Bxg4 32. Qxg4 Qxg4 33. Rxg4) 31... Bd7 $19 32. Ne2 f5 {[%cal Bf7f5,Bf5e4][%mdl 32]} 33. hxg6 fxe4 34. Qe3 {Rf8+! would now be nice for White.} Qxg6 35. Rh4 Qf6 36. Rf4 Qg7 37. Nfg3 {and the idea Nh5 leaves White hopeful.} Rf8 38. Nh5 (38. Kg1 $142) 38... Qg6 39. Rh4 Bg4 40. Nef4 {Black has a decisive advantage.} Qg5 41. Qg3 {[#]} Rxf4 $1 42. Nxf4 (42. Qxf4 Qxh4+) 42... Rg7 {[%mdl 32768] Precision: White = 12%, Black = 74%. . An unexpected result.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Zakhartsov, Viacheslav V"]
[Black "Mu, Ke"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2539"]
[BlackElo "2411"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,42,14,14,14,23,25,16,18,17,13,11,4,12,-15,-14,-11,-7,-9,0,0,0,-17,0]} 1. Nf3 Nf6 2. c4 c6 3. Nc3 d5 4. e3 e6 5. d4 Nbd7 6. Qc2 Bd6 7. Bd3 dxc4 8. Bxc4 b5 9. Be2 Bb7 10. O-O O-O 11. e4 e5 12. dxe5 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} Nxe5 13. Nh4 Bc8 14. Nf5 {The position is equal.} (14. h3 Ng6 15. Nf5 Bxf5 16. exf5 Nf4 17. Bf3 Rc8 18. Rd1 Qe7 19. Be3 Rfd8 {1-0 (56) Aronian,L (2793)-Giri,A (2771) Leuven 2017}) 14... Bxf5 15. exf5 Re8 {[#]} 16. Rd1 $146 ({Find the theoretical novelty and annotate with similar games:} 16. Bg5) 16... Qc7 17. h3 Rac8 18. Be3 Ned7 19. Bf3 Ne5 20. Be2 Ned7 21. Bf3 Ne5 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Ladva, Ottomar"]
[Black "Laurusas, Tomas"]
[Result "1-0"]
[ECO "A33"]
[WhiteElo "2532"]
[BlackElo "2409"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,68,35,29,31,36,54,54,54,54,54,51,56,56,64,70,57,64,64,67,71,52,54,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,10,10,3,0,25,25,29,14,16,11,16,18,91,18,32,12,36]} 1. Nf3 {[%cal Bg1f3,Bf3d4,Bd4b5][%mdl 32]} Nf6 2. c4 c5 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. Bf4 Bb4 7. Ndb5 O-O 8. Bd6 Bxd6 9. Nxd6 Qb6 {A33: Symmetrical English: 2 Nf3 Nf6 3 d4 cxd4 4 Nxd4 e6 5 Nc3 Nc6} 10. Qd2 Nd4 11. O-O-O Qxd6 {White is slightly better.} 12. Qxd4 Qxd4 13. Rxd4 b6 14. e4 e5 15. Rd2 Bb7 16. f3 {[#]} Bc6 $146 ({Predecessor:} 16... Rfd8 17. Be2 {½-½ (31) Agrest,E (2505)-Eingorn,V (2590) Graz 1997}) 17. b4 Rfd8 18. Be2 Kf8 19. Nd5 (19. Kb2 $14) 19... Bxd5 $11 20. cxd5 a5 21. bxa5 Rxa5 22. Rb2 Ne8 23. Kb1 Rb8 24. d6 b5 25. Rd1 b4 26. Bc4 Rb6 27. Rd5 Rxd5 28. Bxd5 Nxd6 {[%mdl 4096] Endgame KRB-KRN} (28... f5 $5) 29. a4 Ke7 30. Kc2 Nb7 $1 31. Bxb7 $1 Rxb7 32. Kb3 Ke6 (32... d5 $11) 33. a5 (33. Rd2 $16) 33... d5 34. a6 {[%mdl 1024] White has compensation.} Ra7 {Precision: White = 68%, Black = 69%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Blomqvist, Erik"]
[Black "Kumsiashvili, Nikoloz"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2525"]
[BlackElo "2403"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,79,8,6,17,3,8,2,17,14,16,10,12,5,4,0,0,-4,19,-14,-19,-11,0,0,-2,-7,-17,-20,-18,-30,-28,-39,-11,-18,0,0,0,0,-7,-10,0,0,0,0,0,-2,-1,-2,0,-1,-6,-8,-4,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. g3 Bg4 3. Bg2 c6 4. c4 e6 5. O-O Nf6 6. cxd5 Bxf3 7. Bxf3 cxd5 8. d4 {A11: English Opening: 1...c6} Nc6 9. e3 Be7 10. Nc3 O-O 11. Qe2 {LiveBook: 12 Games} (11. Bd2 Rc8 12. Rc1 Nd7 13. Qe2 Nb6 14. Rfd1 a6 15. Be1 Bf6 16. Bg2 Rc7 17. Qc2 {½-½ (48) Cordova,E (2651)-Sevian,S (2601) Medellin 2017}) 11... Qd7 12. Rd1 Rfc8 13. Bd2 Ne8 14. Be1 Bf6 $146 ({Predecessor:} 14... Nd6 15. Kh1 f5 16. g4 Ne4 17. gxf5 exf5 {1-0 (48) Seeman,T (2392)-Colovic,A (2487) Tromsoe 2014}) 15. Rac1 Nd6 16. Bg2 Rc7 17. f3 Rac8 18. Bf2 Na5 19. Bf1 a6 20. a3 Nb3 21. Rb1 Nc4 22. Rd3 Nba5 23. Be1 b5 24. Rbd1 Nc6 25. Na2 Qe8 26. Nb4 {The position is equal.} Nxb4 27. axb4 Nb6 {[%cal Bc4b6,Bb6a4,Ba4b2][%mdl 32]} 28. Ra1 Rc2 29. Qd1 {Threatens to win with Bc3.} Na4 {[#]} 30. Bc3 $1 {[%mdl 512]} R2xc3 (30... Nxc3 31. Qxc2) 31. bxc3 Nb2 32. Qb3 (32. Qc2 $5 {[%cal Rc2b2]} Nxd3 33. Bxd3 $11) 32... Nxd3 33. Bxd3 Rc6 34. Kf2 {[%cal Bg1f2,Bf2e1,Be1d2][%mdl 32]} Qc8 35. Ra3 g6 36. f4 Bg7 37. Ke1 f5 38. Kd2 Bf8 39. Qa2 Qb7 40. Qa1 {Precision: White = 62%, Black = 70%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Schneider, Ilja"]
[Black "Nabaty, Tamir"]
[Result "0-1"]
[ECO "D12"]
[WhiteElo "2519"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,68,15,6,0,6,5,8,1,-4,0,0,1,0,0,-2,-6,-24,-27,-19,0,-8,0,-19,39,-21,-22,-39,-22,-20,-20,-26,-19,-175,-173,-184,-188,-245,-236,-317,-287,-301,-295,-304,-295,-291,-187,-294,-299,-1359,-1362,-1339,-1300,-1234,-1235,-1235,-1231,-1193,-1168]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Bd3 Bg6 7. Ne5 Bxd3 {D12: Slav Defence: 3 Nf3 Nf6 4 e3 Bf5} 8. Qxd3 Bd6 (8... Nbd7 {is interesting.} 9. O-O Be7 10. f4 Bb4 11. Nd1 Ne4) 9. O-O O-O {The position is equal.} 10. b3 Qc7 $146 ({Predecessor:} 10... Nbd7 11. Nxd7 Qxd7 {½-½ (11) Korobkov,P (2460)-Motylev,A (2690) Rogaska Slatina 2011}) 11. f4 Bb4 12. Ne2 Ne4 13. c5 Qe7 14. Ng3 Nxg3 15. hxg3 Ba5 (15... f6 $5 {[%cal Rf6e5]} 16. Ng4 Nd7 $11) 16. g4 f6 17. Nf3 $1 Nd7 (17... e5 $11 18. dxe5 Nd7) 18. Bb2 ({White should play} 18. b4 $14 Bd8 19. Re1) 18... e5 $36 {[%mdl 2048] White is under pressure.} 19. dxe5 fxe5 20. Nxe5 Nxc5 {[%cal Bd7c5,Bc5e4,Be4g3][%mdl 32]} 21. Qc2 Ne4 {next ...Qh4 is good for Black.} 22. a3 $2 (22. Rf3 $1 $11 {and White stays safe.}) 22... Qh4 $19 23. Rf3 {[#]} Ng3 $1 24. Kf2 {[#]} (24. Rxg3 $142 Qxg3 25. Bd4) 24... Bb6 $1 {Threatens to win with ...Rae8.} 25. Qd3 {[#]} Rxf4 $1 {[%mdl 512]} 26. Rxf4 Nh5+ $1 27. Ke2 Nxf4+ 28. exf4 {Black must now prevent Rf1.} Qf2+ 29. Kd1 {Qf5 is the strong threat.} Qxb2 30. Qf5 $2 (30. Rb1 Qxg2 31. Qf5) 30... Qxa1+ {Black is clearly winning.} 31. Ke2 Qb2+ 32. Ke1 Qc1+ 33. Ke2 Qe3+ 34. Kd1 Qxb3+ {Precision: White = 30%, Black = 71%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Lei, Tingjie"]
[Black "Neiksans, Arturs"]
[Result "1-0"]
[ECO "C92"]
[WhiteElo "2514"]
[BlackElo "2582"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,69,26,72,45,98,95,97,82,107,106,103,91,81,95,79,91,188,190,187,175,214,182,174,157,327,323,314,262,262,268,229,235,596,585,564,559,692,439,6511,6511,29992,5514,29997,29998]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Bb7 10. d4 Nd7 11. Nbd2 exd4 {C92: Closed Ruy Lopez: 9...Be6, Karpov and Flohr-Zaitsev Variations} 12. cxd4 Bf6 13. Nf1 Na5 14. Bc2 c5 {LiveBook: 4 Games} 15. e5 dxe5 (15... Be7 $1 $14) 16. dxe5 $16 {Black must now prevent Qd3.} Be7 $146 ({Find the theoretical novelty and annotate with similar games:} 16... Bxf3 17. Qd3 g6 18. exf6 Bc6 19. Bg5 Re8 20. Qg3 {0-1 (33) Prince,A-Mannion,S (2380) Largs 1997}) 17. Qd3 {[%csl Gc2][%cal Rd3h7]} g6 18. Bh6 Re8 19. e6 fxe6 20. Rad1 $40 {[%mdl 128] Black is in trouble.} Bd5 21. Ne3 (21. Qc3 $2 Bf6 $19) 21... c4 (21... Bxf3 $16 22. gxf3 Nc6) 22. Qe2 $18 Bb4 {[#]} 23. Ng4 $1 ({Worse is} 23. Nxd5 exd5 24. Qxe8+ Qxe8 $11) 23... Bxe1 24. Qxe1 {Strongly threatening Bg5.} Nc6 ({Wrong is} 24... Bxf3 $2 25. Rxd7 Qxd7 26. Nf6+ Kf7 27. Nxd7 $18) 25. Be4 Qa5 $2 (25... b4 $16) 26. Qe3 Re7 ({Much worse is} 26... Qxa2 27. Qc3 $18) 27. Rxd5 exd5 28. Bxd5+ Kh8 {[#]} 29. Qf4 $1 Rc8 $2 (29... Qb6 {is a better chance.} 30. Ng5 Nd4 31. Nf7+ Kg8) 30. Bxc6 $1 Rxc6 31. Qd4+ Kg8 {Threatens to win with ...Qb6.} 32. Bg5 Re1+ (32... Kf7 $142 33. Nh6+ Ke8 34. Qh8+ Nf8 35. Bxe7 Kxe7 36. Qg7+ Ke8 37. Qf7+ Kd8 38. Qxf8+ Kc7) 33. Nxe1 Qxe1+ 34. Kh2 {Nh6+ would kill now.} Qe6 35. Nh6+ {Precision: White = 98%, Black = 40%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Meskovs, Nikita"]
[Black "Kulaots, Kaido"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2495"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "134"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,134,45,50,-8,-5,-6,27,31,42,35,45,47,45,58,45,-14,-14,-33,-20,-49,-50,-54,-55,-93,-87,-102,-100,-122,-118,-231,-249,-239,-112,-115,-102,-128,-113,-129,-119,-112,-123,-124,-103,-190,-161,-154,-155,-157,-170,-184,-104,-178,-209,-263,-260,-251,-228,-267,-141,-134,-127,-147,-147,-147,-145,-133,-135,-127,-127,-122,-126,-111,-119,-135,-123,-170,-202,-187,-183,-183,-176,-200,-179,-172,-160,-150,-63,-63,-63,-63,-63,-63,-63,-64,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8]} 1. c4 Nf6 2. Nf3 g6 3. d4 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 e5 8. d5 Nb8 {LiveBook: 97 Games} 9. a4 $146 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6} (9. b3 $14) ({Find the theoretical novelty and annotate with similar games:} 9. e4 a5 10. Ne1 Na6 11. Nd3 Nb4 12. Ne1 Na6 13. f4 exf4 14. gxf4 Re8 15. Nd3 Ng4 16. h3 Bd4+ 17. Kh1 {½-½ (25) Inarkiev,E (2727)-Sutovsky,E (2650) Poikovsky 2017}) 9... a5 $11 10. c5 Na6 11. cxd6 {White has an edge.} cxd6 12. Nd2 Nc5 13. Nc4 b6 14. Nb5 Ne8 15. f4 (15. e4 $14) 15... e4 16. Be3 f5 17. Rb1 Ba6 18. Nba3 Rf7 19. b4 axb4 20. Rxb4 Bxc4 21. Nxc4 Rfa7 $1 22. Nxb6 (22. g4 $17) 22... Rb8 $19 23. Qb1 Ra6 (23... Bc3 $1 $19 {[%cal Rc3b4] is more deadly.} 24. Rb5 Nc7 25. Rxc5 dxc5) 24. Nc4 $17 Rxb4 25. Qxb4 Rxa4 26. Qb6 Qxb6 27. Nxb6 {Black must now prevent Bxc5.} Rb4 28. Nc8 Na4 29. Ne7+ (29. g4 $17) 29... Kf7 30. Nc6 Rb5 31. Ba7 Nc3 ({Don't do} 31... Rxd5 32. Rb1 $17) 32. e3 Nxd5 (32... Nf6 $19 33. Ra1 Ng4) 33. Rc1 (33. Rd1 $17 {keeps fighting.}) 33... Rb3 $19 34. Nd8+ Ke7 35. Nc6+ Kd7 36. Bf1 Rc3 ({But not} 36... Nxe3 37. Na5 $19) (36... Bb2 $19 37. Rc2 Bc3) 37. Rxc3 $17 Bxc3 38. Bb5 Kc7 39. Kf2 Nef6 40. h3 Kb7 41. Bd4 {[#]} Bxd4 $1 42. Nxd4 {[%mdl 4096] Endgame KBN-KNN} Kb6 43. Be2 Nc3 44. Bc4 d5 45. Bf1 {[#]} Nd1+ $1 46. Ke2 Nb2 47. Ke1 Nc4 48. Kf2 Na5 49. Be2 Nc6 50. Ne6 h5 ({Black should try} 50... Ka5 $17 51. Ke1 Kb4) 51. Nf8 Ne7 52. Ke1 Kc5 53. Kd2 Kb4 54. Bd1 Ne8 {[#]} ({Better is} 54... Nfg8 $15) 55. Nxg6 $1 $11 {[%mdl 512] The position is equal.} Nxg6 56. Bxh5 Nxf4 $1 57. gxf4 {KB-KN} Nf6 $1 {[%cal Rf6h5]} 58. Bg6 d4 59. Bxf5 Kc5 60. h4 {Strongly threatening Be6.} dxe3+ 61. Kxe3 Kd6 62. Bxe4 {And now Bb7 would win.} Nh5 63. Bh7 {Threatens to win with Bg6.} Ke7 64. f5 {aiming for Bg6.} Kf6 65. Kf3 Ng7 66. Kg4 (66. h5 $5 Nxh5 67. Kg4 $11) 66... Nxf5 67. Bxf5 Kg7 {Precision: White = 55%, Black = 72%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Wan, Yunguo"]
[Black "Bruedigam, Martin"]
[Result "1-0"]
[ECO "C85"]
[WhiteElo "2482"]
[BlackElo "2408"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,119,-10,23,-12,-15,-22,-14,-15,-14,-4,0,0,0,-11,0,-1,27,25,30,20,22,20,23,23,51,57,107,95,65,80,107,51,54,39,41,39,33,16,22,19,14,12,18,18,18,16,19,0,0,-21,29,0,0,0,0,0,0,0,0,0,0,-47,-37,-57,0,0,0,0,14,0,0,0,0,0,0,0,0,0,249,0,0,0,53,57,110,110,116,109,107,70,879,867,739,670,29988,729]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 {[%cal Bg8f6,Bf6d7,Bd7c5][%mdl 32]} 5. O-O Be7 6. Bxc6 dxc6 7. d3 Nd7 8. Nbd2 O-O 9. Nc4 f6 10. Nh4 Nc5 11. Nf5 Kh8 {C85: Closed Ruy Lopez: Deferred Exchange Variation} (11... Bxf5 12. exf5 Re8 13. Qg4 Qd7 14. Re1 b5 15. Bh6 Bf8 16. Nd2 Qd4 17. Qxd4 exd4 18. Bf4 Na4 19. Nf3 Rxe1+ 20. Rxe1 {½-½ (74) Jovanovic,Z (2533)-Bosiocic,M (2610) Valpovo 2017}) 12. Qf3 Ne6 13. Qg3 Rf7 {LiveBook: 6 Games. The position is equal.} 14. Kh1 Bf8 15. a4 c5 $146 ({Find the theoretical novelty and annotate with similar games:} 15... b6 16. f3 Bd7 17. Qf2 Be8 18. f4 b5 19. Na5 {½-½ (31) Schreiner,P (2463)-Mahdy,K (2380) Vienna 2014}) 16. h3 Bd7 17. a5 Qe8 18. b3 $40 {[%mdl 128] White mounts an attack.} Rd8 19. Bd2 Bc8 20. Rae1 Qc6 (20... g6 $5 {[%cal Rg6f5]} 21. Nfe3 Kg8 $11) 21. f4 exf4 22. Bxf4 Nxf4 23. Rxf4 Re8 24. Ref1 g6 25. Nfe3 Bh6 26. R4f3 Bxe3 27. Nxe3 Ref8 28. Qe1 (28. h4 $16) 28... Qd6 29. Nc4 Qd4 30. Rf4 {Strongly threatening e5.} Be6 31. Ne3 Qe5 32. b4 Kg7 33. Qd2 Rd8 34. bxc5 Qxc5 35. h4 Qe5 36. Qb4 c5 37. Qe1 Qd4 38. e5 (38. Nf5+ $5 Bxf5 39. exf5 $14) 38... Qxe5 39. Re4 Qd6 {[#]} 40. Rxe6 $1 {[%mdl 512]} Qxe6 {[#]} 41. Nf5+ $1 {[%mdl 512]} Qxf5 $1 (41... gxf5 42. Qxe6) 42. Rxf5 gxf5 $11 {[%mdl 4096] Endgame KQ-KRR} 43. Qe6 Rd4 44. g3 {[#]} f4 (44... c4 $1 $15) 45. Qg4+ Kf8 46. Qf5 Ra4 47. h5 fxg3 48. Kg2 Ra1 49. h6 {Hoping for Qc8+.} Rb1 50. Qc8+ Ke7 51. Qxc5+ Ke8 $2 (51... Kd8 $11 {and Black is okay.}) 52. d4 $2 ({Not} 52. Kxg3 Re7 $11) ({Only move:} 52. Qc8+ $18 Ke7 53. d4 (53. Kxg3 Kd6 $16)) 52... Re7 53. d5 {[%cal Bd4d5,Bd5d6,Bd6d7][%mdl 32] Threatens to win with d6.} Re2+ (53... Rbe1 $1 $11) 54. Kxg3 $14 {Qc8+ is the strong threat.} Rbe1 (54... Re5 $1 $14) 55. Qc8+ $16 Kf7 56. Qxb7+ Kg6 57. d6 ({Don't do} 57. Qxa6 Kg5 $18) 57... Rxc2 $2 {[%mdl 8192]} (57... Kxh6 $14 58. Qxa6 Re6) 58. Qg7+ $18 Kh5 59. d7 Rd2 60. Qg4+ {Precision: White = 66%, Black = 49%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Pavlov, Sergey"]
[Black "Sreeves, Clement"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "2475"]
[BlackElo "2406"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,65,24,16,24,14,15,-11,-3,-14,-8,-22,-7,-17,0,-7,-17,-6,-12,-15,0,0,77,65,93,71,141,138,209,222,216,213,259,255,236,230,272,252,383,383,383,381,634,614,665,664,664,653]} 1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. d4 cxd4 5. Nxd4 Bb4 6. g3 O-O 7. Bg2 d5 8. cxd5 Nxd5 9. Qb3 Nc6 10. Nxc6 bxc6 11. O-O Rb8 {E20: Nimzo-Indian: 4 g3 and 4 f3} (11... Qa5 12. Ne4 Ba6 13. Qc2 Rfc8 14. Rd1 h6 15. Bf3 Be7 16. Bd2 Qb6 17. Nc3 Rab8 18. b3 Rd8 19. Na4 Qb5 {1-0 (43) Yu,Y (2734)-Zhao,J (2622) Wuxi 2016}) 12. Qc2 Ba6 13. Ne4 Be7 {The position is equal.} 14. a3 Qb6 15. Re1 c5 $146 ({Predecessor:} 15... Rfc8 16. Nd2 Bc5 17. Ne4 Be7 18. Nd2 Bc5 19. Ne4 Be7 {½-½ (19) Skytte,R (2409)-Groszpeter,A (2449) Kecskemet 2015}) 16. Nd2 Bf6 17. e4 Nc7 $1 18. e5 $36 {[%mdl 2048] White has good play.} Be7 19. Nc4 Bxc4 $1 20. Qxc4 Nb5 {[#]} (20... Rfd8 $11) 21. Be3 $1 $16 Nd4 {[#]} 22. b4 $1 {[%cal Bb2b4,Bb4c5,Bc5c6][%mdl 544] Hoping for bxc5.} Qb5 {[#]} ({Better is} 22... g6) (22... cxb4 23. Bxd4) 23. Rac1 $1 Rfc8 (23... Qxc4 $16 {was called for.} 24. Rxc4 Rfc8) 24. Qxb5 $18 Nxb5 25. bxc5 Nxa3 26. c6 Nb5 27. Red1 Bb4 28. Rd7 a5 (28... Ba5 {might work better.} 29. f4 h6) 29. c7 Nxc7 30. Rcxc7 a4 $2 (30... Rxc7 31. Rxc7 a4) 31. Rxf7 {White is clearly winning.} Rxc7 32. Rxc7 a3 33. Bh3 {Precision: White = 74%, Black = 30%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Thybo, Jesper Sondergaard"]
[Black "Jumabayev, Rinat"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2464"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "113"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,113,-4,-14,-2,32,36,43,2,25,14,41,42,143,141,141,131,137,114,112,23,63,51,60,52,69,76,75,41,49,42,41,43,45,0,36,8,73,8,8,8,12,0,0,0,0,0,0,0,0,0,0,0,0,0,6,6,12,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 c5 2. c4 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nc6 6. Nc3 Nc7 {[%cal Bd5c7,Bc7e6,Be6d4,Bd4f5][%mdl 32]} 7. Qa4 Bd7 8. Qe4 g6 9. Ne5 Bg7 10. Nxd7 Qxd7 {LiveBook: 94 Games} 11. h4 {[%cal Bh2h4,Bh4h5,Bh5h6][%mdl 32] A34: Symmetrical English: 2 Nc3, lines with ...d5} (11. O-O O-O 12. d3 Rab8 13. Qa4 b5 14. Qd1 Rfd8 15. Be3 Nd4 16. Rc1 Rbc8 17. Ne4 Nce6 18. Bd2 f5 19. Nc3 h6 20. Nd5 {½-½ (67) Nabaty,T (2622)-Baron,T (2557) Jerusalem 2016}) 11... Ne6 $146 ({Predecessor:} 11... h5 12. Qc4 Ne6 13. O-O O-O 14. Rb1 Rab8 15. Bh3 f5 16. Bg2 Kh7 17. d3 Ne5 18. Qd5 Qc8 19. Nb5 a6 20. Na7 Qd7 21. b4 Qxd5 22. Bxd5 Nd4 23. Rb2 Rfd8 24. Bg2 c4 25. a3 cxd3 {0-1 (25) Hillarp Persson,T (2438)-Wedberg,T (2505) Linkoping 2001}) 12. h5 Ned4 13. h6 {White is slightly better.} Bf6 14. e3 Nf5 15. Qd5 c4 (15... Bxc3 $14 16. Qxd7+ Kxd7 17. bxc3 e5) 16. Qxc4 $16 O-O 17. d4 Rac8 {[%cal Rc6d4] and if ...Ncxd4 works, Black does fine.} 18. Qa4 Rfd8 19. d5 (19. Kf1 $16) 19... Ne5 {[#] White must now prevent ...Rxc3!} 20. Qxd7 Nxd7 21. Bd2 Ne5 22. Ne4 Bh8 23. Ke2 Nc4 $1 24. g4 Nfd6 25. Nxd6 exd6 26. Be4 Nxb2 27. Rac1 Nc4 (27... Na4 $11 {remains equal.}) 28. Bd3 (28. Bb4 $16) 28... Nxd2 $11 {The position is equal.} 29. Kxd2 Kf8 30. Rxc8 (30. g5 {feels hotter.} Bb2 31. Rb1 Bc3+ 32. Ke2 Rd7 33. Rhc1) 30... Rxc8 31. Rc1 (31. Rb1 {is interesting.} Bc3+ 32. Ke2 Rc7 33. Rb3 Ba5 34. Rb5) 31... Rxc1 32. Kxc1 {[%mdl 4096] Endgame KB-KB} Bc3 33. f4 Ke7 34. Kc2 Be1 35. Kd1 Bb4 36. Ke2 Ba3 37. g5 Bb2 38. a4 f6 39. f5 fxg5 40. fxg6 hxg6 41. Bxg6 Kf6 42. Bh5 a6 43. Be8 Ke5 44. Kf3 Kxd5 45. Kg4 Ke4 46. Bd7 b6 47. Bc8 a5 48. Kxg5 Kxe3 49. Bb7 Kd4 50. Kf5 Kc5 51. Ke6 Be5 52. Bd5 Bf4 53. h7 Be5 54. Bf3 Kb4 55. Bc6 Kc4 56. Bd5+ Kc5 57. Bf3 {Precision: White = 57%, Black = 68%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Thorfinnsson, Bragi"]
[Black "Vishnu Prasanna  V"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2461"]
[BlackElo "2538"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,78,-6,15,10,4,-6,0,-8,-7,-14,-16,-10,-20,-16,0,-15,-8,-2,0,0,0,0,0,-19,-20,-16,-23,-24,-21,-14,-23,-20,-20,-20,-25,-20,-15,-23,-25,-16,-11,-32,-8,-8,-2,-8,-12,-10,0,-1,0,0,0,0,0,0,0,0,0,-9,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Bf4 e6 3. e3 d5 4. Nc3 Bd6 (4... Bb4 5. Nge2 O-O 6. a3 Bd6 7. Ng3 c5 8. dxc5 Bxc5 9. Bd3 Nc6 10. O-O Bd6 11. Bg5 h6 12. Bxf6 Qxf6 {0-1 (74) Navara,D (2734)-Wojtaszek,R (2734) Berlin 2015}) 5. Nf3 a6 6. Bd3 {D00: 1 d4 d5: Unusual lines} b5 7. a3 Bb7 8. Bg5 $146 ({Predecessor:} 8. O-O Nbd7 9. Re1 O-O 10. Ne2 Qe7 11. Ng3 c5 12. c3 {1-0 (40) Koleva,A (1642)-Stoyanov,G Sofia 2014}) 8... Nbd7 9. e4 dxe4 10. Nxe4 Be7 11. Qe2 Nxe4 12. Bxe4 Bxe4 13. Qxe4 O-O 14. Bxe7 Qxe7 15. O-O c5 16. dxc5 Nxc5 17. Qe2 Na4 18. c3 Rfd8 19. Ne5 {And now Nc6 would win.} Qc7 20. Rfe1 Rd6 21. Rac1 {Threatening c4.} f6 22. Ng4 Qc4 23. Ne3 Qxe2 24. Rxe2 Rad8 25. g3 Nb6 26. Kg2 {The position is equal.} Rc8 27. Rcc2 Kf7 28. h4 (28. Red2 $5 {[%cal Rd2d6]} Rxd2 29. Rxd2 $11) 28... Nc4 29. Nxc4 bxc4 30. Rcd2 Rxd2 31. Rxd2 $11 {[%mdl 4096] Endgame KR-KR} Ke7 32. Kf3 h5 33. Ke3 e5 34. Rd5 Ke6 35. Ra5 Rc6 36. Ke4 f5+ 37. Ke3 Rb6 38. Rc5 Rxb2 39. Rxc4 Rb3 {Precision: White = 69%, Black = 76%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Yankelevich, Lev"]
[Black "Sulskis, Sarunas"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2447"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,120,3,-10,-7,-18,7,2,0,-5,0,-8,17,15,14,-6,6,7,5,-17,-18,-22,-22,-21,-15,-22,-7,-21,-13,-41,-22,-22,-22,-22,-22,-22,-22,-36,-41,-50,-41,-35,-31,-38,-37,-34,-31,-40,-39,-42,-41,-85,-82,-116,-37,-94,-72,-140,-147,-138,-135,-126,-81,-98,-76,-485,-448,-506,-496,-465,-453,-561,-564,-538,-493,-526,-526,-455,-482,-376,-438,-431,-433,-614,-602,-470,-401,-572,-532,-1322,-1173,-12841,-12841,-12841,-12842,-12842,-12843,-12843,-12843,-12844,-12844,-12845,-12845,-29987,-29988,-29988,-29989,-29989,-29990,-29990,-29991,-29994,-29995]} 1. d4 d5 2. Nf3 Bf5 3. Bf4 e6 4. e3 Bd6 5. Bg3 Nf6 6. Bd3 {LiveBook: 6 Games. D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} (6. Nbd2 O-O 7. Be2 c5 8. c3 Nc6 9. Ne5 Bxe5 10. dxe5 Nd7 11. f4 Qb6 12. Qb3 c4 13. Qxb6 axb6 14. e4 dxe4 15. Nxc4 {½-½ (54) Golubov,S (2481)-Morozevich,A (2683) Moscow 2016}) 6... O-O 7. O-O Ne4 8. Bxe4 $146 {The position is equal.} ({Predecessor:} 8. Bxd6 Qxd6 9. Nbd2 Nxd2 10. Qxd2 Bxd3 11. Qxd3 Nd7 12. c4 dxc4 13. Qxc4 c5 14. dxc5 Qxc5 15. Qxc5 Nxc5 {½-½ (30) Brumen,D (2356)-Bontempi,P (2362) Bol 2015}) 8... Bxe4 9. Nc3 Bf5 10. Nh4 c6 11. Nxf5 exf5 12. Qf3 g6 13. Bxd6 Qxd6 14. Qf4 Qxf4 15. exf4 Re8 16. Rfe1 Nd7 17. g3 a5 18. a4 Nf8 19. f3 Rxe1+ 20. Rxe1 $15 {[%mdl 4096] Endgame KRN-KRN} Ne6 21. Rd1 Kf8 22. Kf2 Ke7 23. Ne2 Kd6 24. g4 fxg4 25. fxg4 b5 26. Ra1 b4 27. Rd1 Rc8 28. Kf3 c5 29. dxc5+ Rxc5 30. f5 gxf5 31. gxf5 Ng7 (31... Ng5+ $17 32. Ke3 Rxc2) 32. Nd4 (32. c3 $15) 32... Ke5 $17 33. f6 ({Better is} 33. Rd2) 33... Ne6 ({But not} 33... Kxf6 $6 34. Rd2 $11) 34. Nxe6 Kxe6 {KR-KR} 35. Rd2 Kxf6 36. Ke3 Ke5 37. Kd3 $2 {[%mdl 8192] [#]} (37. Re2 $17 {nothing else works.}) 37... Rc4 $1 $19 38. Rg2 Rd4+ 39. Ke3 Rh4 40. Kd3 Rh3+ 41. Kd2 f5 42. Re2+ Kd4 43. Rf2 Ke4 44. Re2+ Kf4 45. Rf2+ Kg4 46. Rg2+ (46. c3 $142 bxc3+ 47. bxc3) 46... Kf3 47. Re2 f4 {[%cal Bf5f4,Bf4f3,Bf3f2][%mdl 32]} 48. Ke1 (48. c3 {was worth a try.} bxc3+ 49. bxc3) 48... d4 {[%cal Bd5d4,Bd4d3,Bd3d2][%mdl 32]} 49. Kf1 {[#]} b3 $1 {[%mdl 512]} 50. cxb3 d3 51. Rg2 Ke3 52. Ke1 f3 53. Rg7 f2+ 54. Kf1 d2 55. Re7+ Kd3 56. Rd7+ Kc2 {Black mates.} 57. Rc7+ Kxb2 58. Rd7 Kc2 59. Rc7+ Rc3 60. Kxf2 Rxc7 {Precision: White = 31%, Black = 63%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Fruebing, Stefan"]
[Black "Dastan, Muhammed Batuhan"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "2417"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,109,0,5,8,8,14,7,0,21,18,18,22,51,0,0,0,0,0,11,0,0,0,8,7,7,0,6,5,0,0,8,0,0,0,2,0,0,-20,27,-2,0,0,0,-93,-60,-66,-74,-64,-70,-75,-9,-31,0,0,0,0,0,0,0,-1,0,-27,6,-10,-18,-15,0,0,0,0,0,0,0,0,0,-141,-106,-190,-96,-150,-160,-215,-209,-755,-761,-752,-743,-29998,-649,-29999]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 a6 7. Bb3 h6 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} 8. Re1 O-O 9. h3 Re8 10. Nbd2 Be6 11. Bxe6 (11. Nf1 Bxb3 12. Qxb3 d5 13. Be3 Bf8 14. Rad1 Na5 15. Qc2 {0-1 (43) So,W (2812)-Carlsen,M (2832) Paris 2017}) 11... Rxe6 {LiveBook: 9 Games} 12. b4 Ba7 13. Qc2 {[#]} d5 $146 ({Predecessor:} 13... Ne7 14. Nf1 Ng6 {½-½ (14) Ganguly,S (2654)-Kasimdzhanov,R (2703) Tashkent 2016}) 14. Nb3 Qd7 15. a4 Rd8 16. b5 Nb8 17. Be3 (17. Bb2 $14) 17... Bxe3 $11 18. Rxe3 {aiming for Nc5.} Qe7 19. c4 {[%cal Bc3c4,Bc4c5][%mdl 32]} c6 20. Ree1 dxe4 21. dxe4 Rc8 {White should prevent ...cxb5.} 22. bxa6 Nxa6 23. c5 $1 Nd7 {[%cal Ra6c5]} 24. Rac1 Ra8 25. Qc3 Nc7 26. Na5 Ra7 27. Red1 Ne8 28. Nd2 Nef6 29. Re1 Qf8 30. Ndb3 Re8 31. Qb4 Rea8 32. Rc4 (32. Nc4 $11 {keeps the balance.}) 32... Qc8 33. Rc2 Qc7 {[%cal Ra7a5]} 34. Nc4 Rxa4 35. Qc3 Re8 ({Better is} 35... Nh7 $17) 36. Kh2 Re6 37. f3 Ra8 38. Rb1 Nh5 39. Rd2 Nf4 40. Rbd1 Nf8 41. Rd6 Rae8 42. Qb2 (42. g3 $5 {[%cal Rg3f4]} Nh5 43. R6d2 $11) 42... R6e7 43. R1d2 N8g6 44. Ne3 Nf8 45. Nc4 h5 46. Qc3 Re6 47. Qb4 Qe7 48. Ne3 {[#]} (48. Nba5 $1 $11) 48... Qg5 $1 $17 49. Nf1 {[#]} (49. Qxb7 $17 {might work better.} Nxh3 50. Nf5) 49... R8e7 (49... Rg6 $1 $19 50. Qxb7 N8e6) 50. Na5 ({White should play} 50. Ne3) 50... Rg6 51. Qb2 (51. Rxg6 $17 {was called for.} N8xg6 52. Nc4) 51... N8e6 $19 52. Nxb7 $2 (52. Nc4 Nxc5 53. Rxg6 Nxg6 54. Nce3) 52... Qh4 53. Nd8 {[#]} Nxh3 $1 {[%cal Bf4h3,Bh3g5,Bg5f3][%mdl 544]} 54. Nxe6 (54. gxh3 Qf4+) 54... Ng5+ 55. Kg1 Nxf3# {Precision: White = 46%, Black = 61%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Bracker, Frank"]
[Black "Vorobiov, Evgeny E"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2405"]
[BlackElo "2569"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 33,77,36,35,0,0,0,110,9,9,30,8,7,5,14,6,4,3,6,5,12,10,-21,0,0,0,0,0,0,0,0,0,0,0,0,0,-5,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 8. Qd2 Nbd7 9. g4 h6 10. O-O-O Bb7 11. h4 b4 12. Na4 Qa5 13. b3 Nc5 14. a3 {B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack} Nxa4 (14... Rc8 15. Qxb4 Qc7 16. Nxc5 dxc5 17. Qa4+ Nd7 18. Ne2 Bc6 19. Qc4 Ne5 20. Qc3 Nxf3 21. Bf4 e5 22. Qxf3 exf4 23. Qxf4 {1-0 (44) Nakamura,H (2710)-Vachier Lagrave,M (2703) San Sebastian 2009}) 15. axb4 Qc7 16. bxa4 Nd7 17. Nb3 d5 {LiveBook: 6 Games} 18. Na5 (18. exd5 Bxd5 19. Bf4 Qb7 $11) (18. Bf4 $5 {[%cal Rf4c7]} e5 19. Bg3 $11) 18... Rc8 19. c4 {[#] And now c5 would win.} ({Wrong is} 19. exd5 $2 {[#]} Bxb4 $1 {[%mdl 512]} 20. Qd3 Ne5 $19) 19... Nb6 $146 (19... Ba8 $11 {keeps the balance.}) ({Predecessor:} 19... Ba8 20. c5 Nxc5 21. bxc5 Bxc5 22. Bxc5 Qxc5+ {0-1 (32) Draoui,N (2369)-Shchekachev,A (2592) Issy les Moulineaux 2006}) 20. Kb1 ({Inferior is} 20. exd5 Nxd5 21. Nxb7 Bxb4 $15) (20. Bf4 $16 Qd7 21. Kb1) 20... Nxc4 $11 21. Bxc4 dxc4 22. Bb6 {[%cal Be3b6,Bb6c7,Bc7f4][%mdl 32] The position is equal.} c3 23. Bxc7 {[%csl Gd1][%cal Rd2d7] [#]} cxd2 24. Bf4 $1 Ba8 {Threatens to win with ...Rc3.} 25. Bxd2 f5 26. gxf5 exf5 27. Kb2 (27. Rc1 $5 {[%cal Rc1c8]} Rd8 28. Rh2 $14) 27... fxe4 28. fxe4 Be7 {White must now prevent ...0-0.} 29. Rc1 O-O 30. Rxc8 Rxc8 31. Bc3 Rf8 ({But not} 31... Bxe4 $2 32. Re1 $18) 32. Rg1 Rf7 33. b5 axb5 34. axb5 Bxe4 35. b6 Bc5 36. Rg4 Rf2+ 37. Ka1 Rf1+ 38. Kb2 {Hoping for b7.} Rf2+ 39. Ka1 {Precision: White = 65%, Black = 79%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "D`Costa, Lorin A R"]
[Black "Bogner, Sebastian"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "2390"]
[BlackElo "2600"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,112,-5,-43,-23,-20,-10,-13,0,0,0,0,0,6,6,-2,6,0,-4,-2,8,4,0,-42,-42,-44,-35,-35,-31,-53,-54,-52,-46,-54,-48,-44,-25,-70,-70,-70,-70,-71,0,-41,-41,-44,-43,-43,-43,-119,-36,-45,-42,-69,-69,-66,-29,-102,-93,-98,-16,-15,-14,-6,0,-1,0,0,0,-386,-355,-481,-408,-510,-512,-962,-956,-1014,-958,-29962,-29950,-5518,-1410,-1443,-1379,-5618,-2682,-29972,-29972,-29980,-29977,-29986,-29987,-29987,-29988]} 1. Nf3 d5 2. g3 Nf6 {[%cal Bg8f6,Bf6d7,Bd7b6,Bb6d5][%mdl 32]} 3. Bg2 g6 4. c4 dxc4 5. Qa4+ Nfd7 6. O-O Bg7 7. Nc3 O-O 8. Qxc4 e5 9. d3 Nb6 10. Qb3 Nc6 11. Be3 {LiveBook: 3 Games. A16: English Opening: 1...Nf6 with ...d5} (11. Bg5 Nd4 12. Nxd4 Qxg5 13. Nf3 Qe7 14. Rfc1 Be6 15. Qc2 f5 16. Rab1 a5 17. b3 Rad8 18. Na4 Nxa4 19. bxa4 {1-0 (30) Chadaev,N (2567)-Piasetski,L (2269) Groningen 2009}) 11... Be6 12. Qc2 Nd5 $146 (12... Nd4 $5 {[%cal Rd4c2]} 13. Qc1 c6 $11) ({Predecessor:} 12... Nd4 13. Bxd4 exd4 14. Ne4 Bd5 15. Nc5 Nd7 16. b4 Nxc5 17. Qxc5 c6 18. Rfb1 a5 19. bxa5 Rxa5 {0-1 (37) Hoffman,A (2450)-Medarde Santiago,L (2160) Sanxenxo 2014}) 13. Bg5 {The position is equal.} f6 {Hoping for ...Nxc3.} 14. Bd2 Re8 15. Rfc1 {[%cal Bf1c1,Bc1b1,Bb1b5][%mdl 32]} Bf8 16. a3 Nxc3 17. bxc3 Bc5 18. Rcb1 Rb8 19. a4 a5 20. Rb5 b6 21. Be3 (21. Ne1 $5 {[%cal Rg2c6]} Bd5 22. Bh6 $11) 21... Bxe3 22. fxe3 Ne7 23. e4 Nc8 24. Rf1 Nd6 25. Rbb1 Qe7 26. Nd2 Kg7 27. Rf2 b5 28. d4 Bd7 29. axb5 Nxb5 30. Qd3 Red8 (30... Nd6 $17) 31. e3 a4 32. Rbf1 Rf8 33. c4 Qa3 34. Qc2 {[#]} (34. Qxa3 $15 Nxa3 35. c5) 34... Nc3 ({Worse is} 34... exd4 35. cxb5 dxe3 36. Rf3 $11) ({Black should play} 34... Na7 $1 $17 35. Nf3 Nc6) 35. Qd3 {Threatening dxe5.} Nb1 36. Qe2 Nxd2 $1 37. Qxd2 Be6 38. Qa5 (38. c5 $1 $11) 38... Qxe3 $17 39. Qxc7+ {[#]} Kg8 (39... Kh6 $1 $17 40. d5 Bg4) 40. Qc6 $1 $11 {[%cal Rc6e6]} Bf7 $36 {[%mdl 2048] Black is more active.} 41. dxe5 $1 {Black must now prevent e6.} fxe5 42. Kh1 a3 {Threatens to win with ...Qd4.} 43. Qc7 Be6 (43... Rb1 {is more complex.} 44. Rxf7 Rxf1+ 45. Rxf1 Rxf1+ 46. Bxf1 Qxe4+ 47. Kg1 Qd4+) 44. Qxe5 $2 {[%mdl 8192]} (44. Qd6 $11 {and White has nothing to worry.} Rfe8 45. Rf8+ Rxf8 46. Qxe6+ Kg7 47. Qe7+ Kg8 48. Qe6+ Kh8 49. Qxe5+ Kg8 50. Qe6+ Kh8 51. Qe5+ Kg8 52. Qe6+ Kh8 53. Qe5+) 44... Bxc4 $19 45. Rxf8+ Rxf8 46. Rxf8+ Kxf8 47. Qh8+ (47. h4 $142 a2 48. Qh8+ Bg8 49. Qf6+ Bf7 50. Qh8+ Ke7 51. Qe5+ Kd7 52. Kh2) 47... Ke7 48. Qe5+ Kd7 49. Bh3+ Kc6 50. Qe8+ Kc5 (50... Kb6 $142 51. Qd8+ Kb5 52. Qb8+ Ka5 53. Qd8+ Kb4) 51. Qe7+ Kb6 52. Qd8+ Kb5 {( -> ...Qe1+)} 53. Qb8+ Ka5 {Black mates.} 54. Qc7+ Kb4 55. Qb7+ Kc3 56. Qb1 a2 {Precision: White = 43%, Black = 54%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Pultinevicius, Paulius"]
[Black "Tregubov, Pavel V"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2389"]
[BlackElo "2593"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,116,0,0,-2,0,10,6,4,6,13,8,-4,0,0,0,-8,1,1,-5,-8,16,-2,-2,-6,-10,-28,-12,-26,-6,-45,0,0,0,0,0,0,0,0,0,0,0,0,0,-83,0,-415,-409,-566,-562,-553,-515,-493,-468,-709,-648,-441,-140,-140,-130,-124,-79,-89,-55,-55,-55,-55,-64,-112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. O-O e6 5. c4 c6 6. cxd5 exd5 7. d3 Na6 {A11: English Opening: 1...c6} 8. Nc3 Be7 9. Nd4 Bg6 10. e4 O-O {LiveBook: 9 Games} 11. a3 $146 ({Predecessor:} 11. h3 Re8 12. Re1 dxe4 13. dxe4 Bc5 14. Nb3 Qxd1 15. Rxd1 Nxe4 16. Nxe4 Bxe4 17. Bxe4 Rxe4 18. Nxc5 Nxc5 {½-½ (64) Safarli,E (2657)-Balogh,C (2659) Baku 2015}) 11... Bc5 12. Nb3 dxe4 13. dxe4 Qxd1 14. Rxd1 Bb6 15. h3 Rfe8 {[%cal Rf6e4]} 16. Re1 Nd7 17. Be3 Ndc5 18. Nxc5 Nxc5 19. Rad1 f5 20. b4 Nxe4 21. Nxe4 fxe4 22. Bxb6 axb6 23. Re3 c5 24. b5 Red8 25. Rxd8+ Rxd8 26. Bxe4 Bxe4 27. Rxe4 $11 {[%mdl 4096] Endgame KR-KR} Kf7 28. Kf1 Rd6 29. h4 Re6 30. Rf4+ Ke7 31. g4 (31. h5 $11 {remains equal.}) 31... Kd6 (31... g6 $1 $17) 32. g5 $2 {[%mdl 8192]} (32. Rf7 $11) 32... Re7 $19 33. h5 Kd5 34. g6 hxg6 35. hxg6 {[#]} Re6 $1 36. a4 (36. Rf7 $142 Rxg6 37. Rf4) 36... c4 37. Rf7 {[#]} Rxg6 $2 (37... c3 $1 $19 {[%cal Rc3c2] and Black stays clearly on top. Strongly threatening ...c2.} 38. Rc7 (38. Rxg7 $2 c2 $19) 38... Kd4) 38. Rxb7 $17 Kc5 39. Rc7+ Kb4 40. Rc6 Rf6 (40... Rg5 {looks sharper.} 41. Ke2 Re5+ 42. Kd1 Kxa4 43. Rxc4+ Kxb5 44. Rg4 g5) 41. Ke2 Kxa4 42. Rxc4+ Kxb5 43. Rg4 g6 ({Better is} 43... Rf7 $17 44. Rg1 Kb4 45. Rb1+ Kc5 46. Rc1+ Kd4) 44. f4 $11 {The position is equal.} Rd6 45. Rg1 Kc4 {Hoping for ...Re6+.} 46. Rc1+ Kb3 47. Rb1+ Kc2 48. Rb5 Kc3 49. Rb1 $1 Re6+ 50. Kf3 Kd3 (50... Kc4 $5 {[%cal Rb6b5]} 51. Rc1+ Kb3 52. Rb1+ Kc2 $17) 51. Kg4 Rc6 52. Kg5 Kc2 (52... b5 $5 53. Rxb5 Ke4 $11) 53. Rb5 Kc3 54. Rb1 {White threatens Rc1+ and mate.} Kd3 55. Kh6 Ke4 (55... Kc4 $5 {[%cal Rb6b5]}) 56. Kg5 Kd5 57. Rd1+ Ke4 {aiming for ...b5.} 58. Rb1 Kd3 {Precision: White = 73%, Black = 61%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Miedema, David"]
[Black "Kryakvin, Dmitry"]
[Result "0-1"]
[ECO "A40"]
[WhiteElo "2373"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,48,46,60,58,50,50,62,45,60,50,42,30,32,16,17,0,0,0,0,0,0,0,0,0,0,20,0,-702,-692,-715,-714,-676,-669,-593,-590,-5461,-5321]} 1. d4 g6 2. c4 Bg7 3. e4 d6 4. Nc3 e5 5. d5 Nd7 6. Bd3 a5 {A42: Modern Defence: Averbakh Variation} 7. Nge2 Ne7 {LiveBook: 3 Games} 8. h4 $146 ({Predecessor:} 8. O-O O-O 9. Ng3 Nc5 10. Bc2 f5 11. exf5 Nxf5 {0-1 (37) Agdestein,S (2625)-Movsziszian,K (2503) LLucmajor 2014}) 8... h5 {White is slightly better.} 9. Bg5 f6 10. Be3 Nc5 11. Bc2 O-O {[%cal Bh8f8,Bf8f5,Bf5f2][%mdl 32]} 12. Ng3 b6 13. a3 (13. Qe2 {looks sharper.} f5 14. exf5 Nxf5 15. Bxf5 Bxf5 16. Bxc5 bxc5 17. Nxf5 Rxf5 18. Ne4) 13... f5 14. exf5 (14. Bg5 $5 {[%cal Re4f5]}) 14... Nxf5 15. Nxf5 Bxf5 16. Bxf5 Rxf5 17. g4 hxg4 18. Qxg4 {aiming for Ke2.} Nd3+ 19. Ke2 e4 20. Qxg6 $4 {[%mdl 8192] [#]} (20. Rag1 $11 Qf8 21. Nxe4) 20... Rxf2+ $3 $19 {[%mdl 512] Black is clearly winning.} 21. Kd1 (21. Bxf2 Nf4+) 21... Nxb2+ 22. Kc1 Nd3+ 23. Kd1 {[#]} Qf8 $1 {[%cal Rf8f3][%mdl 512] ( -> ...Qf3+)} 24. Qxe4 {White hopes to continue with Rg1.} Re8 {Precision: White = 46%, Black = 81%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Haldorsen, Benjamin"]
[Black "Ghosh, Diptayan"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2362"]
[BlackElo "2562"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,129,10,16,9,22,14,18,-10,-8,-33,-38,-41,-35,-41,-40,-39,-39,-35,-51,-46,-28,-35,0,-54,28,16,30,23,34,13,15,25,19,0,0,0,0,0,6,0,0,0,14,0,0,0,0,-8,0,0,0,0,239,218,221,195,274,160,399,402,424,396,688,684,1025,1033,1026,1025,991,931,1277,1264,1106,56,87,60,69,0,0,-101,0,0,0,-103,0,-16,0,0,0,0,0,-91,-68,-119,-78,-139,-133,-345,-343,-312,-329,-320,-244,-407,-380,-1849,-389,-1133,-1054,-29981,-29982,-29981,-29982,-29981,-29982,-29979]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Nxf6+ Bxf6 7. Bxf6 Qxf6 8. Nf3 O-O {[%cal Bh8f8,Bf8d8,Bd8d5,Bd5h5][%mdl 32] LiveBook: 109 Games} 9. Qd3 {C13: French: Classical System: 4 Bg5 Be7, Alekhine-Chatard Attack} (9. Qd2 c5 10. O-O-O Rd8 11. Qc3 cxd4 12. Rxd4 Rxd4 13. Qxd4 Qxd4 14. Nxd4 b6 15. Be2 Bb7 16. Nb5 Nd7 17. Rd1 {0-1 (44) Onischuk,V (2608)-Howell,D (2684) Minsk 2017}) 9... Bd7 $146 ({Find the theoretical novelty and annotate with similar games:} 9... Nd7 10. Qe3 Nb6 11. Bd3 Nd5 12. Qe4 g6 13. O-O Rd8 14. Rad1 Rb8 15. Ne5 Ne7 16. c3 h5 {½-½ (54) Kovachev,D (2308)-Tan,J (2448) Oslo 2017}) 10. O-O-O Bc6 11. h4 {The position is equal.} Bxf3 12. gxf3 Nc6 13. Qe4 Rfd8 {[%cal Rc6d4]} 14. c3 Rd5 15. Bd3 Rh5 16. Rdg1 g6 17. Rg4 {[%cal Bg1g4,Bg4h4,Bh4h7][%mdl 32]} Rd8 18. f4 $1 Rhd5 {[%cal Rc6d4] next ...Nxd4! is good for Black.} 19. Bc2 (19. Qf3 $11) 19... Ne7 (19... h5 $15 20. Rg5 Ne7) 20. h5 $1 $11 c6 21. hxg6 hxg6 22. Rgh4 Nf5 23. Rh7 Kf8 24. Bb3 Nd6 25. Qe3 Ra5 26. Kb1 Nf5 27. Qe4 Nd6 28. Qe3 Ke8 29. a3 Kd7 30. c4 Rf5 31. d5 exd5 32. cxd5 cxd5 33. Rd1 {[%cal Bh1d1,Bd1d4,Bd4e4,Be4e3,Be3g3,Bg3g4][%mdl 32]} Qe6 $2 (33... Kc7 $11 {and Black is okay.}) 34. Qxa7 $18 Ke7 35. Qa5 Qe4+ (35... b6 $142 36. Qxb6 Ne4) 36. Ka2 (36. Bc2 $18 Qxf4 37. Bxf5 Qxf5+ 38. Ka1) 36... d4 $2 (36... Qxf4 $16 37. Bxd5 Rc8) 37. Qb4 Qxf4 38. Rxd4 Qxf2 $2 {[#]} (38... Qe5 39. Rd1 Qc5) 39. Rh8 $1 {[%mdl 512]} Rd7 (39... Rxh8 40. Qxd6+) 40. Re4+ Kf6 41. Qc3+ Kg5 42. Re3 Rf4 43. Rg3+ Rg4 44. Qe5+ $2 (44. Qc1+ $18 Kf5 45. Bc2+ Ke6 46. Rxg4) 44... Nf5 $1 $14 45. Rxg4+ $1 ({Of course not} 45. Rgh3 Re7 $15) 45... Kxg4 46. Qe4+ (46. Rh2 $14 Qd4 47. Rg2+ Kh5 48. Qe1) 46... Kg5 $11 47. Rh3 {[#]} (47. Rh1 $11) 47... Qf4 ({Black should try} 47... Rd2 $1 $17 {[%cal Rd2b2]} 48. Qe5 Qd4 49. Qxd4 Rxd4 50. Bxf7 Kf6) 48. Qe8 Re7 49. Qd8 {[#]} (49. Qb5 $11 {keeps the balance.}) 49... Qd6 ({Black should play} 49... Qd4 $1 $17 {[%cal Rd4d8]} 50. Qc8 Re2) 50. Qh8 Qf6 $36 {[%mdl 2048] ...Qxh8 is the strong threat. White is under pressure.} 51. Qc8 Qd4 52. Qc1+ Kf6 53. Rc3 (53. Rh7 $11 {remains equal.}) 53... Kg7 $17 54. Rc4 (54. Qc2 $15) 54... Qe3 {Strongly threatening ...Qxc1.} 55. Qh1 (55. Qd1 $142) 55... Nd4 56. Rb4 $2 (56. Rc3 $17 Qe5 57. Bd5) 56... Nxb3 $19 57. Rxb3 {[%mdl 4096] Endgame KQR-KQR} Qe6 58. Qf3 Qc4 59. Qg3 $2 (59. Ka1 {was necessary.}) 59... f5 {[%cal Bf7f5,Bf5f4][%mdl 32]} 60. Qd6 $2 (60. Kb1 f4 61. Qh4) 60... Kf7 $2 (60... Re3 61. Qd7+ Kh6) 61. Qd8 $2 (61. Qh2 f4 62. Qh7+ Kf6 63. Qh8+ Kf5 64. Qf8+ Rf7 65. Qh6) 61... f4 {And now ...Re3 would win.} 62. Qh8 Re3 {Black mates.} 63. Qh7+ Kf6 64. Qh8+ Kf5 65. Qf8+ {Precision: White = 38%, Black = 54%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Migot, Tangi"]
[Black "Boruchovsky, Avital"]
[Result "0-1"]
[ECO "C92"]
[WhiteElo "2360"]
[BlackElo "2556"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,80,24,-14,11,10,61,52,58,55,61,0,0,0,0,-3,-3,-9,-10,-10,0,-8,0,0,0,-8,-9,-16,-26,-174,-166,-163,-153,-135,0,0,0,0,0,0,0,-3,-7,-179,-184,-12842,-12843,-12843,-12843,-12844,-12844,-12845,-12843]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Bb7 10. d4 Nd7 11. Nbd2 exd4 {C92: Closed Ruy Lopez: 9...Be6, Karpov and Flohr-Zaitsev Variations} 12. cxd4 Bf6 13. Nf1 Na5 14. Bc2 Re8 15. Rb1 c5 16. b4 {LiveBook: 4 Games} cxb4 17. Rxb4 Nc4 $146 (17... Nb6 $11) ({Predecessor:} 17... Rc8 18. a4 Qc7 19. Ne3 Bxe4 20. Bxe4 Rxe4 21. axb5 axb5 22. Rxb5 {½-½ (75) Kosteniuk,A (2555)-Khademalsharieh,S (2435) Khanty-Mansiysk 2016}) 18. a4 $14 Qa5 19. Rb1 Rac8 20. Ne3 (20. N1d2 $14) 20... Bxe4 $11 21. Nxc4 Bxf3 $1 22. Nxa5 Bxd1 23. Rxd1 {And now Bf5 would win.} (23. Rxe8+ $2 Rxe8 24. Bxd1 Re1+ 25. Kh2 Rxd1 $17) 23... Rxc2 24. axb5 axb5 25. Rxb5 Ree2 26. Be3 $1 h6 27. Nb7 (27. Rb7 $5 {[%cal Rb7d7]} Nf8 28. Rb8 $11) 27... Be7 28. Ra1 Nf6 29. Ra6 {[#]} (29. Kf1 $11) 29... Ne4 $1 $19 {[%cal Re4f2]} 30. Ra8+ Kh7 31. Re8 Ng3 (31... Rc7 $17 32. Na5 {[#]} d5 $1 {[%mdl 512]}) 32. Rb1 $1 $11 ({Don't blunder} 32. Rxe7 $2 Re1+ 33. Kh2 Nf1+ 34. Kh1 Nxe3+ 35. Kh2 Nf1+ 36. Kg1 Rxe7 $19) 32... Bg5 {aiming for ...Nf5.} 33. Nxd6 f5 {[%cal Bf7f5,Bf5f4,Bf4e3,Be3e2][%mdl 32] White must now prevent ...f4.} 34. Nf7 f4 $36 {[%mdl 2048] Black is pushing.} 35. Nxg5+ ({Avoid the trap} 35. Rh8+ $2 Kg6 $19) 35... hxg5 36. Re5 $2 (36. fxg3 $11 {and White stays safe.} Rxg2+ 37. Kf1 fxe3 38. Rxe3) 36... fxe3 37. fxg3 $2 (37. Rxe3 Rxe3 38. fxe3) 37... Rxg2+ $19 {Black is clearly winning.} 38. Kh1 Rh2+ (38... Rxg3 $2 39. Re1 $17) 39. Kg1 Rcg2+ 40. Kf1 e2+ {Precision: White = 40%, Black = 70%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Pershin, Denis"]
[Black "Shyam, Sundar M"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2353"]
[BlackElo "2547"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,75,-16,-16,-13,-15,0,0,0,-21,0,-1,9,19,11,17,63,0,0,-25,-22,-26,-27,-82,-25,-33,-16,-18,39,25,29,20,41,13,0,0,0,8,2,8,111,13,225,214,261,241,337,338,396,400,912,954,1564,917,1028,1022,1019,1002,980,962,904,920,29970,29973,29992,29993]} 1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Na6 5. e3 Be7 6. h3 {D00: 1 d4 d5: Unusual lines} O-O 7. Nf3 {LiveBook: 10 Games} c6 8. Nc3 {The position is equal.} Qb6 9. a3 c5 10. Rb1 $146 ({Find the theoretical novelty and annotate with similar games:} 10. Be2 Bd7 11. O-O Qxb2 {1-0 (41) Bortnyk,O (2568)-Volokitin,A (2640) Lvov 2016}) 10... Qa5 11. Qd2 Bd7 12. Be2 Rfc8 13. O-O {aiming for Nxd5!} c4 14. Bh2 (14. e4 $14) 14... Be8 $11 15. Qe1 (15. Ne4 $5 Qxd2 16. Nxf6+ Bxf6 17. Nxd2 $11) 15... Qd8 16. Ne5 b5 17. f4 (17. Bf3 $11) 17... b4 (17... Ne4 $17) 18. axb4 Bxb4 19. f5 exf5 (19... Nc7 $11) 20. Rxf5 $14 Ne4 21. Bf3 f6 22. Ng4 Bxc3 $1 23. bxc3 {Hoping for Nf2.} Bg6 24. Bxe4 $1 dxe4 25. Rfb5 $36 {[%mdl 2048] White is more active.} h5 {[#]} (25... Nc7 $11 26. Ra5 Nd5) 26. Nf2 (26. Nxf6+ $1 $16 Qxf6 27. Be5) 26... Be8 $2 (26... Nc7 $11) 27. Nxe4 $18 {Threatens to win with Rb7.} Bxb5 28. Rxb5 {[%cal Bb1b5,Bb5h5,Bh5h6][%mdl 32]} Rc6 29. Rxh5 g6 30. Rh6 Kg7 (30... Qe7 $142) 31. Qh4 {[#] White wants to mate with Rh7+.} Qg8 32. g4 Re8 33. g5 {[%cal Rg5f6]} Rxe4 34. Qxe4 {Intending Qe7+ and mate.} fxg5 35. Qxc6 Kxh6 36. Qxa6 Qe8 37. Be5 Qd7 38. Qf6 {Precision: White = 48%, Black = 40%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Badelka, Olga"]
[Black "Kollars, Dmitrij"]
[Result "1/2-1/2"]
[ECO "A15"]
[WhiteElo "2335"]
[BlackElo "2514"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,77,32,41,20,41,0,0,0,14,0,12,-25,-21,-43,-29,-58,0,0,0,-7,10,-45,-65,-57,-46,-43,-35,-70,-39,-35,-39,-34,-51,-39,-50,-44,-63,-99,-64,-209,-201,-214,-179,-273,0,0,29,17,17,25,25,28,11,6,8,0]} 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e4 d6 6. Nge2 c5 7. O-O Nc6 8. d3 Ne8 9. Be3 Nd4 10. Qd2 Nc7 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7} 11. Bh6 Rb8 (11... Bh3 12. Bxg7 Kxg7 13. Nxd4 Bxg2 14. Nf5+ gxf5 15. Kxg2 fxe4 16. dxe4 Ne6 17. f4 Kh8 18. Ne2 {1-0 (38) Flores,D (2579)-Belyakov,B (2487) Doha 2016}) 12. Bxg7 Kxg7 {LiveBook: 3 Games. White is slightly better.} 13. Nxd4 cxd4 14. Ne2 e5 15. b4 $146 ({Predecessor:} 15. f4 b5 16. f5 f6 17. g4 bxc4 18. dxc4 {0-1 (31) Martin Capitan,F (2116)-Matnadze,A (2355) Linares 2016}) 15... Bd7 16. f4 f6 17. f5 b5 18. g4 a5 19. a3 g5 (19... bxc4 $15 20. dxc4 Na6) 20. Rfb1 $11 axb4 21. axb4 Ra8 22. Nc1 (22. Bf3 $11) 22... Be8 $15 23. Nb3 Bf7 24. Rxa8 Nxa8 25. Na5 Qd7 26. Bf1 Nb6 27. cxb5 $1 Qxb5 28. Rc1 Rc8 29. Rxc8 Nxc8 30. Kf2 Nb6 31. Nb7 (31. h4 $1 $15 h6 32. Nc4 Nxc4 33. dxc4) 31... Qd7 $19 32. Na5 {[#]} Na4 $1 33. Qc1 (33. Kg1 {was necessary.}) 33... Qb5 $2 (33... Nc3 $19 {Threatens to win with ...Qa4.} 34. h4 h6) 34. Qc7 $1 $11 {Hoping for Nc4.} Qxb4 35. Nc4 Qc5 $1 {[%cal Rc5c7]} 36. Qe7 Qc8 $1 37. Nxd6 Qf8 38. Qc7 Nc3 39. Be2 {Precision: White = 50%, Black = 64%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4"]
[White "Lavendelis, Egons"]
[Black "Christiansen, Johan-Sebastian"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "2271"]
[BlackElo "2475"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,115,7,11,10,14,0,0,-14,37,20,31,38,109,110,107,93,116,139,127,90,97,99,85,88,81,61,55,54,91,22,102,117,174,122,179,44,64,33,118,0,0,0,53,10,20,-9,-8,-19,-23,-129,-25,-61,0,0,0,0,0,0,0,-24,-28,-36,-36,-374,-373,-483,-442,-477,-374,-585,-555,-886,-850,-12835,-12835,-12835,-12835,-12839,-12839,-12840,-12840,-6605,0,0,0,-1042,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. f4 d5 3. e5 c5 4. Nf3 Nc6 5. c3 Nh6 6. Na3 Qb6 {C00: French: Unusual White 2nd moves} (6... Be7 7. Nc2 O-O 8. d4 cxd4 9. cxd4 Qb6 10. Bd3 Bd7 11. O-O Rac8 12. Kh1 f6 13. exf6 Bxf6 14. Ne5 {0-1 (58) Perelshteyn,E (2524)-Lenderman,A (2623) Manchester 2016}) 7. Nc2 Bd7 {LiveBook: 16 Games} 8. Be2 f6 9. exf6 gxf6 10. O-O $146 ({Predecessor:} 10. d4 Rg8 11. O-O cxd4 12. cxd4 Bd6 13. Kh1 O-O-O {0-1 (30) Chen,T (2288)-Schwarz,F (2244) Germany 2013}) 10... Bd6 (10... O-O-O $11) 11. Kh1 O-O-O 12. d4 Rdg8 (12... Bc7 $14) 13. dxc5 $1 $16 Bxc5 14. b4 Be7 15. Be3 Qc7 16. Nfd4 Kb8 17. f5 $36 {[%mdl 2048] White has strong initiative.} Nxf5 18. Nxf5 exf5 19. Qxd5 Ne5 $1 20. Nd4 Rd8 21. Bf4 (21. Qb3 $16) 21... Bc8 (21... Bxb4 $11 22. Rab1 (22. cxb4 Bc8 $14) 22... Bc8) 22. Qb3 Rhe8 (22... Bd6 $16 {was worth a try.}) 23. Bh5 (23. Rad1 $18) 23... Rg8 (23... Rf8 $16 {was necessary.} 24. Rad1 Ka8) 24. Bf7 (24. Bf3 $1 $18) 24... Rg4 $14 25. Bd5 a6 ({Better is} 25... Rxf4 $1 $14 26. Rxf4 Bf8) 26. h3 (26. g3 $16) 26... Rxf4 $1 $11 27. Rxf4 Ng4 (27... Ng6 $1 $11 28. Rxf5 Bxf5 29. Nxf5 Qe5 30. Nxe7 Nxe7) 28. Qc4 {aiming for Qxc7+.} (28. Raf1 $5 {[%cal Rh3g4]} Ne3 29. c4 Nxf1 30. Rxf1 $14) 28... Bd6 29. hxg4 {Threatens to win with Rff1.} Bxf4 30. gxf5 Qe5 31. Rf1 (31. Bf3 $11 {remains equal.}) 31... Bd2 ({Not} 31... Rxd5 32. Rxf4 $1 {[%mdl 512]} Qe3 33. Rf3 $14 (33. Qxd5 Qxf4 34. Qf3 Qxf3 $11)) (31... Be3 $1 $17 {[%cal Re3d4] And now ...Bxd4 would win.} 32. Be6 Bxd4 33. cxd4 Bxe6 34. Qxe6 Qxd4) 32. Be6 Bxc3 (32... Qe3 $1 $15 33. Rf3 Qe1+ 34. Kh2 Be3) 33. Qxc3 {Bxc8 is the strong threat.} Qxd4 34. Qxd4 Rxd4 $15 {[%mdl 4096] Endgame KRB-KRB} 35. a3 Rd3 36. Rf4 (36. g4 {seems wilder.} Rd4 37. Kg2 Rxg4+ 38. Kf3 Rg5 39. Re1) 36... Rxa3 37. Bxc8 Kxc8 $11 {KR-KR} 38. Rh4 $2 {[%mdl 8192] [#]} ({Only move:} 38. g4 $1 $15) 38... Ra4 $1 $19 39. Rh6 Rxb4 40. Rxf6 a5 41. Rf8+ (41. Rf7 $142 a4 42. f6) 41... Kd7 42. Rf7+ Kd6 43. Rxh7 a4 44. Rh8 b5 45. Ra8 Ke5 46. Kg1 Rb3 47. Kf2 a3 $2 (47... Kxf5 $19 {Strongly threatening ...a3.} 48. Ke2 a3) 48. g4 $11 b4 {Hoping for ...Rh3.} (48... Kf6 $5 {[%cal Rb5b4]}) 49. Ra5+ $2 {[%mdl 8192]} (49. Ra6 $11) 49... Kf4 $2 ({Black should try} 49... Kf6 $19 50. Ke2 Rg3 51. Ra6+ Kg5 52. Rg6+ Kh4 53. Rh6+ Kg5 54. Rg6+ Kh4 55. Rh6+ Kxg4) 50. f6 $1 {The position is equal.} Kxg4 (50... Ke4 $5 {[%cal Rb3f3]}) 51. Ra4 Rf3+ 52. Ke2 Kg3 53. Rxb4 a2 54. Ra4 Kg2 55. Kd2 (55. f7 $5) 55... Rf1 56. f7 Rxf7 57. Kc2 Rf2+ (57... a1=Q $5 58. Rxa1 Rf4 $11) 58. Kb3 {Precision: White = 47%, Black = 57%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4.13"]
[White "Stocek, Jiri"]
[Black "Gholami, Aryan"]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "2583"]
[BlackElo "2434"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,68,19,3,22,0,7,-16,23,0,0,0,-6,0,-3,3,10,2,6,0,2,0,12,4,31,14,4,0,5,-47,0,0,31,18,15,0,0,0,5,-10,-10,-10,-13,-9,-7,-50,-33,-48,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 Nf6 2. Nc3 c5 3. Nf3 d5 4. cxd5 Nxd5 5. e3 Nc6 {[%cal Bb8c6,Bc6b4,Bb4d3][%mdl 32]} 6. Bc4 {LiveBook: 13 Games. A34: Symmetrical English: 2 Nc3, lines with ...d5} Nb6 7. Bb3 $146 ({Predecessor:} 7. Be2 e6 8. b3 Be7 9. Bb2 O-O 10. O-O Nd5 11. Rc1 b6 12. Nxd5 Qxd5 13. d4 cxd4 14. Nxd4 Nxd4 15. Bxd4 {½-½ (39) Bachmann,A (2633)-Dias,A (2182) Cuiaba 2015}) 7... c4 8. Bc2 Nb4 9. Ba4+ Bd7 10. Bxd7+ Qxd7 11. O-O Nd3 12. b3 e5 13. bxc4 Nxc4 14. Rb1 Rc8 15. e4 f5 16. exf5 {Black must now prevent Ng5.} Bc5 17. Qa4 Qxa4 18. Nxa4 b6 19. Rb3 (19. Nxc5 $11 Rxc5 20. Ne1) 19... e4 {[#] Hoping for ...Bxf2+.} (19... Bxf2+ $5 20. Kh1 Nxc1 21. Rxc1 O-O $15) 20. Ng5 Nd6 (20... Bxf2+ $5 21. Rxf2 Nxc1 $11) 21. Nxc5 (21. Bb2 $5 Nxb2 22. Rxb2 $14) 21... Nxc5 22. Ra3 O-O 23. g4 a5 24. Rh3 h6 25. Ne6 Nxe6 26. fxe6 Rfe8 27. d3 Rc3 28. Re3 Rxd3 29. Rxd3 {The position is equal.} exd3 $15 {KRB-KRN} 30. Rd1 Rxe6 {...Nc4 is the strong threat.} 31. Rxd3 Re1+ 32. Kg2 Rxc1 33. Rxd6 Rc2 34. Rxb6 Rxa2 {Precision: White = 48%, Black = 39%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4.14"]
[White "Braun, Arik"]
[Black "Abdumalik, Zhansaya"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2577"]
[BlackElo "2423"]
[Annotator "TA"]
[PlyCount "181"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,181,72,79,76,127,122,120,120,179,176,156,165,172,151,159,150,200,182,197,195,328,327,320,305,303,308,393,380,379,304,379,351,362,324,371,379,440,420,553,552,531,534,507,355,348,188,188,188,188,188,188,188,185,184,189,196,221,223,217,213,209,171,291,227,213,214,218,210,268,235,210,196,187,62,63,32,37,18,19,0,0,0,61,0,0,0,0,0,0,0,0,0,144,145,143,141,187,25,25,0,141,0,0,0,0,0,25,8,14,15,12,14,38,0,14,13,22,12,12,14,16,19,27,27,31,28,63,52,58,64,65,33,90,96,272,277,277,263,314,308,628,622,625,629,595,76,406,581,594,582,594,569,521,450,492,283,12840,12840,12841,12841,6003,2058,12850,12851,12851,12851,12851,12851,12851,12851,12851,12851,12851,12851]} 1. g3 Nf6 2. Bg2 g6 3. e4 {[%cal Be2e4,Be4e5][%mdl 32]} d5 (3... d6 4. d4 Bg7 5. Ne2 O-O 6. h3 e5 7. O-O Nc6 8. d5 Ne7 9. c4 Nd7 10. Nbc3 f5 11. Be3 Nf6 12. Qd2 fxe4 13. g4 h5 14. g5 Nh7 15. Nxe4 Nf5 {½-½ (35) Bocharov,D (2558)-Smirin,I (2658) Minsk 2015}) 4. e5 Ng4 5. d4 {[%cal Bd2d4,Bd4c5][%mdl 32]} h5 6. Ne2 {A00: Irregular Openings} c5 (6... Bg7 $142) 7. h3 $1 $16 {[%cal Rh3g4]} ({But not} 7. dxc5 $6 e6 $15) 7... Nh6 8. dxc5 $146 {White is better.} ({Predecessor:} 8. e6 Bxe6 9. dxc5 Bd7 10. Qd4 Rg8 11. Qxd5 {1-0 (49) Bohn,U (2126)-Michalski,D (2112) Amsterdam 2015}) 8... e6 (8... Qa5+ $16 9. c3 Qxc5) 9. c4 $18 dxc4 10. Qxd8+ Kxd8 11. Na3 Bxc5 12. Nxc4 Kc7 13. O-O Nf5 14. Bg5 Bd7 {[#]} (14... Nc6 $142 15. Rfd1 b6) 15. b4 $1 {[%mdl 512]} Be7 (15... Bxb4 16. Rfb1) 16. Bxe7 Nxe7 17. Rac1 Bc6 18. Nd6 Kb6 19. Nc3 Nd7 20. Bxc6 bxc6 21. Nxf7 Rhb8 22. Rfd1 Kc7 23. b5 Nc5 24. bxc6 Nxc6 25. Ne2 Rb5 26. Ng5 Kb7 {[#]} 27. f4 (27. a4 $142 $1 {[%mdl 512]} Ra5 (27... Nxa4 28. Rd7+) 28. Rb1+ Kc7 29. Nf4) 27... Rd8 28. Rxd8 Nxd8 29. Nd4 Rb4 30. Rxc5 Rxd4 {[%mdl 4096] Endgame KRN-KRN} 31. Rc2 a5 32. Kf2 Rd3 33. Ne4 Kb6 34. Nc5 Rd1 35. h4 Rh1 (35... Kb5 {was called for.} 36. Ne4 Kb6) 36. Ke3 Re1+ 37. Kd3 Rg1 38. Kc4 Rxg3 39. Rd2 Kc7 40. Rd7+ Kc8 41. Kb5 (41. Rg7 $18 Rg2 42. a3) 41... Rg2 $1 $14 42. Rg7 (42. Ra7 $5 {[%cal Rc5a4]}) 42... Rb2+ 43. Ka6 Rxa2 44. Rxg6 (44. Ne4 {seems wilder.} Nc6 45. Kb6 Nd4 46. Rxg6 Rc2 47. Kxa5 Rb2 48. Ka4) 44... a4 45. Rg3 {And now Rc3 would win.} Rc2 (45... Ra1 $1 $11) 46. Nxa4 (46. Kb5 $1 $14) 46... Kd7 $11 47. Kb6 {Hoping for Nc5+.} Ke7 48. Nc5 {Black must now prevent Rg7+.} Rb2+ $1 49. Kc7 {aiming for Rg7+.} Rc2 50. Rg7+ Nf7 (50... Ke8 $11 51. Kb6 Rb2+ 52. Ka6 Ra2+ 53. Kb5 Rb2+ 54. Ka6 Ra2+ 55. Kb6 Rb2+ 56. Ka6) 51. Kb6 $16 Rb2+ 52. Kc6 Rc2 {[#]} 53. Kb5 $2 (53. f5 $1 $18 {[%cal Rf5e6][%mdl 512]} exf5 54. e6 Rxc5+ 55. Kxc5 Kxe6 56. Kd4) 53... Rb2+ $11 54. Kc6 (54. Kc4 $11) 54... Rc2 $1 $16 55. Rg6 (55. f5 $16 exf5 56. e6 Rxc5+ 57. Kxc5 Kxe6 58. Kd4) 55... Nd8+ $1 $11 56. Kb5 Rb2+ 57. Kc4 {Kd3 is the strong threat.} Rf2 58. Nd3 Rh2 59. Kd4 Rxh4 60. Ke4 Rh3 61. Ne1 Rh1 (61... Kf7 $5 {[%cal Rf7g6]} 62. Rf6+ Kg7 $14) 62. Nf3 Kf7 63. Rg2 (63. Rf6+ {is more complex.} Kg7 64. Ke3 h4 65. Kf2 Rh3 66. Nd4) 63... Ra1 64. Ng5+ Ke7 65. Rc2 Ra4+ 66. Kf3 Ra3+ 67. Kg2 Kd7 68. Ne4 Nf7 69. Nf6+ Kd8 70. Nxh5 Re3 (70... Nh8 $14) 71. Rc5 $16 Nh6 $2 {[#]} (71... Ra3 $16 {was necessary.} 72. Rc6 Ra2+ 73. Kh3 Kd7) 72. Ng7 $1 $18 Kd7 {[#]} 73. Rb5 $1 Ng4 74. Ra5 Ke7 $2 (74... Rc3 75. Ra7+ Kc6 76. Nxe6 Kd5) 75. Ra7+ Kd8 76. Nxe6+ Kc8 77. Rc7+ Kb8 {Now ...Nxe5 and Black clings on.} 78. Rc5 Kb7 79. Nd4 Kb6 80. Rc6+ Kb7 81. Re6 Kc7 82. Nf3 (82. Re7+ $142 Kb6 83. Nf5) 82... Kd7 $2 (82... Re4 83. Kg3 Ne3) 83. Rg6 {White is clearly winning.} Re2+ 84. Kf1 Rf2+ 85. Kg1 Rxf3 86. Rxg4 {KR-KR} Ke6 87. Kg2 Ra3 88. Rg3 Ra4 89. Kf3 Kd5 90. Rg6 Ra3+ 91. Kg4 {Precision: White = 67%, Black = 48%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.09"]
[Round "4.17"]
[White "Sanal, Vahap"]
[Black "Krupenski, Juri"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2539"]
[BlackElo "2413"]
[Annotator "TA"]
[PlyCount "49"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,49,24,35,9,13,10,18,3,15,4,84,75,73,68,84,63,70,67,73,64,57,83,81,68,117,70,58,65,211,229,198,227,227,219,279,313,263,255]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O Ngf6 5. Re1 a6 6. Bxd7+ Nxd7 7. d4 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} (7. b3 e5 8. c3 Be7 9. d4 O-O 10. dxe5 dxe5 11. c4 Re8 12. Nc3 f6 13. Be3 Nf8 14. Qxd8 Rxd8 {0-1 (36) Delgado Ramirez,N (2583)-Mareco,S (2562) Maringa 2013}) 7... e6 {LiveBook: 16 Games} 8. Nc3 (8. Bg5 $5 {[%cal Rg5d8]} f6 9. Be3 $14) 8... Be7 9. dxc5 {The position is equal.} Nxc5 10. Bf4 O-O $146 ({Predecessor:} 10... b5 11. b4 Nb7 12. a4 bxa4 13. Nxa4 Bd7 14. Be3 Bxa4 15. Rxa4 O-O 16. Qd3 a5 17. Rea1 d5 18. bxa5 Rxa5 19. Rxa5 Nxa5 20. exd5 {½-½ (20) Schoenthier,F (2325)-Scholz,C (2396) Germany 2004}) 11. b4 Nd7 (11... e5 $11) 12. Bxd6 $16 Nb6 13. Bc5 Bxc5 14. bxc5 {[#] Threatens to win with Qxd8.} Nd7 15. Na4 Qa5 16. Qd4 $36 {[%mdl 2048] Black is under pressure.} e5 $1 {[%cal Re5d4]} 17. Qc4 b5 18. cxb6 Bb7 19. Rab1 {Qc7 is the strong threat.} Rac8 20. Qb3 Nf6 {[#]} (20... Bc6 $1 $14) 21. Qb4 $1 $18 {[%cal Rb4a5]} Qxb4 22. Rxb4 Rxc2 23. Nxe5 Nxe4 24. f3 Ng5 25. Rb2 {Precision: White = 80%, Black = 52%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Sasikiran, Krishnan"]
[Black "Thorfinnsson, Bragi"]
[Result "1-0"]
[ECO "C75"]
[WhiteElo "2688"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,75,45,48,55,66,36,69,45,47,47,47,34,84,40,96,83,111,109,91,91,104,121,110,111,142,94,98,82,164,114,137,81,85,57,61,43,62,66,66,12,70,55,106,83,131,37,173,136,1664,1641,2116,2065,1877,1835,29993,29994]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. O-O g6 7. d4 Bg7 8. Re1 Nge7 9. Be3 O-O 10. Nbd2 Qe8 {C76: Ruy Lopez: Deferred Steinitz: 5 c3 Bd7 6 d4 g6} 11. Bb3 Kh8 {LiveBook: 4 Games} (11... b6 12. dxe5 dxe5 13. a4 Kh8 14. Nc4 a5 15. Bxb6 cxb6 16. Nd6 Qb8 17. Ng5 Nd8 18. Ndxf7+ Nxf7 19. Nxf7+ Rxf7 20. Bxf7 {½-½ (33) Areshchenko,A (2665)-Demchenko,A (2600) Abu Dhabi 2016}) 12. dxe5 dxe5 {White is slightly better.} 13. Bc5 Rd8 $146 ({Find the theoretical novelty and annotate with similar games:} 13... b6 14. Ba3 Na5 15. Bc2 f6 16. Qe2 Qf7 17. Bd3 b5 18. b4 {½-½ (34) Marinkovic,S (2434)-Budimir,B (2240) Tuzla 2004}) 14. Qe2 b6 15. Ba3 Na5 16. Bd5 ({Much weaker is} 16. Qxa6 Bb5 $15) 16... c6 17. Bb3 Bc8 (17... c5 $14) 18. Bc2 $36 {[%mdl 2048] White is in control.} c5 19. b4 cxb4 20. Bxb4 Nac6 21. Ba3 b5 22. Bc5 Bh6 23. Nf1 Be6 {[#] Threatens to win with ...Bc4.} 24. Bb3 g5 (24... Qd7 $16) 25. Ne3 Rg8 26. Rad1 ({White should try} 26. Bxe6 fxe6 27. Ng4) 26... Ng6 $16 27. Nf5 Nf4 28. Qc2 Bf8 29. Be3 f6 30. Bxf4 (30. h4 $14) 30... Rxd1 (30... gxf4 $11 31. Bxe6 Qxe6) 31. Rxd1 $14 Bxb3 (31... gxf4 $14 32. Bxe6 Qxe6) 32. Qxb3 gxf4 33. Kf1 ({White should play} 33. Nd6 $16 Bxd6 34. Rxd6) 33... b4 (33... Nd8 $1 $14) 34. Nd6 {[%cal Bf5d6,Bd6f7,Bf7e5][%mdl 32]} Qg6 $2 {[%mdl 8192]} (34... Bxd6 $16 35. Rxd6 bxc3) 35. Nh4 $18 Qh5 36. Nf7+ Kg7 37. Nf5+ Kg6 {[#]} 38. Nxe5+ $1 {[%mdl 512] Precision: White = 45%, Black = 36%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Nabaty, Tamir"]
[Black "Lei, Tingjie"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2654"]
[BlackElo "2514"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,105,17,13,16,12,12,0,26,-3,-7,-8,-7,-23,0,0,0,0,0,-8,-21,-16,-5,-37,-44,-80,-59,-64,-64,-92,-77,-81,-81,-81,-79,-91,-94,-90,-83,-77,-89,-70,-71,-102,0,-4,0,-20,7,0,10,13,40,16,46,40,50,17,33,21,51,49,105,104,102,95,99,104,104,102,172,164,209,190,210,210,209,206,205,200,557,580,564,564,577,575,637,637,625,607,603,587]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 e5 6. dxe5 Nxe5 7. Qe2 Qe7 8. Bb5+ Bd7 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack} (8... Nc6 9. Be3 Nf6 10. h3 g6 11. Nd2 Bg7 12. Bc5 Qxe2+ 13. Nxe2 Nd7 14. Bd6 Nb6 15. a4 Bd7 16. a5 {1-0 (68) Efimenko,Z (2648)-Rapport,J (2334) Zalakaros 2017}) 9. Bxd7+ {LiveBook: 5 Games} Kxd7 10. Qb5+ Kc7 {White must now prevent ...Nd3+.The position is equal.} 11. Bf4 g5 $1 {[%cal Rg5f4]} 12. Bxe5+ $146 ({Find the theoretical novelty and annotate with similar games:} 12. Qa5+ Kc8 13. Bxe5 Qxe5+ 14. Ne2 Nf6 15. Na3 Bxa3 16. Qxa3 {½-½ (32) Hausdorf,H (2295)-Popov,V (2276) ICCF email 2010}) 12... Qxe5+ 13. Ne2 Re8 14. Nd2 a6 $36 {[%mdl 2048] Black has the initiative.} 15. Qd3 $1 Nf6 16. Nf3 Qe4 17. Qxe4 dxe4 18. Nxg5 Rg8 19. Nh3 Rxg2 20. Nhf4 Rg4 21. h3 Rg5 22. Rg1 Rf5 23. Rd1 Bh6 24. Ng2 Rf3 25. Rh1 Nd7 {Hoping for ...Ne5.} 26. Nd4 Rf6 $1 27. Ke2 Ne5 28. b3 Nd3 {[%csl Gd3][%cal Rf6f2]} 29. Rdf1 Nf4+ ({Black should play} 29... Rd8 $17 30. Ne3 Nf4+ 31. Kd1 Rc6) 30. Nxf4 $11 Bxf4 31. Rhg1 Rg6 32. Rg4 Rxg4 33. hxg4 {[%mdl 4096] Endgame KRB-KRN} Rg8 34. f3 (34. Rh1 $5 {[%cal Rh1h7]}) 34... exf3+ 35. Kxf3 Bg5 36. Re1 Rd8 37. Re5 Bd2 38. Ke4 Kb6 (38... h6 $14) 39. Kd3 $1 $16 {[%cal Rd3d2]} Bc1 40. Kc2 Ba3 41. Rf5 Rg8 42. Rf6+ Kc5 {[#]} (42... Ka7 $16) 43. b4+ $1 $18 Kd5 44. Kb3 ({But not} 44. Rxf7 $6 Bxb4 45. Rd7+ (45. cxb4 Kxd4 46. Rxh7 b5 $14) (45. Rxh7 Rxg4 46. cxb4 Rxd4 $14) (45. Rxb7 Bc5 $16) 45... Bd6 $16) 44... Bc1 45. Rxf7 Rxg4 46. Rxh7 b5 {[#]} 47. Rd7+ $1 Ke4 $2 (47... Ke5 {is tougher.} 48. a4 bxa4+ 49. Kxa4 Rg6) 48. Rd6 {White is clearly winning.} Rg2 49. Nc2 Bd2 50. Rxa6 Rg1 {( -> ...Rb1+)} 51. Na3 Bf4 52. Rb6 Be5 53. Rxb5 {Precision: White = 74%, Black = 51%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Jumabayev, Rinat"]
[Black "Wieczorek, Oskar"]
[Result "1/2-1/2"]
[ECO "D70"]
[WhiteElo "2610"]
[BlackElo "2460"]
[Annotator "TA"]
[PlyCount "162"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,162,33,33,34,39,29,42,53,58,39,39,45,43,25,25,29,30,16,29,26,44,33,41,31,31,31,43,41,58,60,62,53,56,47,84,80,90,60,85,84,131,92,97,94,152,168,162,163,153,136,155,92,272,266,281,264,234,226,354,352,342,323,310,176,196,191,195,195,177,179,173,135,241,234,266,259,278,216,234,206,197,216,218,214,205,202,207,127,134,45,116,102,122,118,166,164,147,168,202,201,190,179,183,159,136,95,253,145,152,160,139,98,90,80,76,64,75,75,203,203,559,60,62,55,68,71,66,34,40,22,22,16,15,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 c5 5. Bg2 Qa5+ 6. Bd2 Qb6 7. dxc5 Qxc5 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3} 8. Qb3 Ne4 9. Be3 Qa5+ 10. Nbd2 Nc6 11. O-O Nd6 {LiveBook: 4 Games} 12. Bf4 $146 ({Predecessor:} 12. Rfd1 Nf5 13. Nf1 Nxe3 14. Nxe3 O-O 15. Rac1 {0-1 (54) Grachev,B (2672)-Inarkiev,E (2666) Vladivostok 2014}) 12... Nf5 13. Ne4 d6 14. Bd2 Qc7 15. e3 O-O 16. Rac1 Qb6 17. Bc3 Qxb3 18. axb3 a5 19. Ra1 Bd7 20. Rfd1 Nb4 21. Ne1 Bc6 22. Bxb4 axb4 23. Nd3 Rxa1 24. Rxa1 d5 25. cxd5 Bxd5 26. Nec5 Bxg2 27. Kxg2 Rd8 {Hoping for ...b6.} 28. Ra7 Nd6 29. Kf3 $36 {[%mdl 2048] White is more active.} b6 30. Rd7 Rc8 31. Na6 Kf8 32. Nc7 Nb7 ({Black should try} 32... Ne8 33. Nd5 Nf6 34. Nxf6 (34. Nxb6 Nxd7 35. Nxc8 Ne5+ 36. Ke2 Nc6 $16) (34. Nxe7 Re8 $17) 34... Bxf6) 33. Ne6+ $1 $16 fxe6 34. Rxb7 $18 {[%mdl 4096] Endgame KRB-KRN} Rc6 35. Ke4 Rd6 36. g4 (36. f4 $142) 36... Kf7 $2 (36... g5 $16) 37. g5 (37. Nxb4 Bxb2 38. Nd3 Bf6 $16) 37... Bh8 38. h4 (38. Nxb4 Bxb2 39. Rc7 Ba3 $16) 38... Bg7 39. Rb8 (39. Nxb4 $6 Bxb2 40. Rc7 Rd2 $16) 39... h6 (39... Rc6 {is a better defense.} 40. Nxb4 Rd6) 40. gxh6 (40. Nxb4 hxg5 41. hxg5 Bxb2 $16) 40... Bxh6 41. Ne5+ (41. Nxb4 Bg7 $16) 41... Kg7 42. Nc4 (42. f4 $142) 42... Rd5 43. Rxb6 Rh5 44. Rxe6 Rxh4+ 45. Kf3 Bg5 46. Re4 Rh8 (46... Rh3+ $16 47. Kg2 Rh5) 47. Ne5 $1 Rb8 48. Nd3 Bf6 49. Ke2 (49. Nxb4 Kf7 $16) 49... g5 50. Kd2 ({Resist} 50. Nxb4 $6 Kg6 $16) 50... Kg6 51. Kc2 Kf5 52. Rc4 ({But not} 52. Rxb4 $6 Rxb4 53. Nxb4 g4 $16) 52... g4 53. Nxb4 Rh8 {intending ...Rh2.} 54. Nd5 Bg5 55. Rc5 (55. Kd3 $1 $16) 55... Kg6 (55... Rh2 $14) 56. Rc6+ Kf5 {[#]} 57. Kd3 $1 Rb8 58. b4 e6 59. Nb6 Bd8 60. Rc5+ Kg6 61. Nc4 Rxb4 62. Ne5+ Kf6 63. Nc6 Rb7 $2 (63... Rb3+ $16 {keeps fighting.} 64. Rc3 Rb7) 64. b4 (64. Nxd8 $18 Rd7+ 65. Kc3 Rxd8 66. b4) 64... Rd7+ $16 {[#]} 65. Ke2 $1 Bc7 66. Nd4 Bd6 67. Rc6 Bxb4 68. Rxe6+ Kg5 69. Re5+ Kf6 (69... Kg6 $16) 70. Re4 $18 Rg7 $2 (70... Bc3 71. Rxg4 Ra7 72. Rf4+ Kg6 73. Rg4+ Kh5) 71. Ne6 $2 ({White must play} 71. Rf4+ $18 Kg6 72. Rxg4+ Kf6 73. Rxg7 Kxg7 74. e4) 71... Kf5 $14 72. Kd3 Rd7+ 73. Nd4+ Kg5 74. Re5+ Kh4 75. Rb5 Be1 {The position is equal.} 76. Ke2 Bc3 77. Ne6 Rd2+ 78. Kf1 g3 79. fxg3+ Kxg3 80. Ng5 (80. Nd4 $5) 80... Rd1+ 81. Ke2 Rd2+ {Precision: White = 63%, Black = 53%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Bogner, Sebastian"]
[Black "Yankelevich, Lev"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2600"]
[BlackElo "2447"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,121,22,37,47,85,91,91,81,92,85,89,89,100,100,100,96,101,81,85,64,66,77,61,62,79,80,67,67,82,65,70,68,73,64,85,35,42,42,47,41,43,40,35,18,31,17,27,27,43,19,23,34,41,0,0,0,0,0,0,0,0,0,0,0,0,0,135,0,0,0,0,16,150,0,13,0,0,0,141,0,0,0,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 e5 8. dxe5 dxe5 9. Bg5 Be6 10. Qa4 Qe8 {LiveBook: 5 Games. E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6} (10... h6 11. Rad1 Qe7 12. Nd5 Bxd5 13. Bxf6 Bxf6 14. cxd5 Nd4 15. e4 Nxf3+ 16. Bxf3 Rfd8 17. Rc1 Qd7 18. Qxd7 Rxd7 {½-½ (35) Edouard,R (2628)-Bacrot,E (2692) Cap d'Agde 2016}) 11. Nd2 Nd4 $146 {White must now prevent ...Nxe2+!} ({Predecessor:} 11... h6 12. Bxf6 Bxf6 13. Nd5 Bd8 14. Ne4 f5 15. Nc5 Bc8 16. Rad1 Nd4 17. Qxe8 Rxe8 18. Nc3 {½-½ (44) Michiels,B (2536)-Kovalev,A (2517) Gent 2017}) 12. Qxe8 $1 Raxe8 {White is better.} 13. e3 Nf5 14. Bxf6 Bxf6 15. Bxb7 Rb8 16. Bd5 $1 Rxb2 17. Nde4 Be7 18. Bxe6 fxe6 19. c5 Kf7 20. Rfd1 Rd8 21. Rxd8 Bxd8 22. Rb1 Rxb1+ 23. Nxb1 $16 {[%mdl 4096] Endgame KBN-KNN} Ke8 24. Kf1 Kd7 25. Ke2 Kc6 26. Kd3 Be7 27. Kc4 a5 28. g4 Nh6 $1 29. Nbd2 Nxg4 30. Nf3 Kb7 $1 31. Kb5 Nf6 $1 32. c6+ (32. Nfg5 {is interesting.} Nxe4 33. Nxe4 a4 34. Kxa4 Kc6 35. Kb4) 32... Ka7 $1 33. Nxf6 Bxf6 $11 {KB-KN} 34. a4 g5 $1 35. Nd2 ({Of course not} 35. Kxa5 e4 $17) 35... g4 36. Ne4 Bh4 37. Kxa5 Kb8 38. Ka6 Be7 39. Kb5 Bh4 40. Ka6 Be7 41. a5 Bh4 42. Kb5 Ka7 (42... h6 $11 {keeps the balance.}) 43. a6 (43. Nc5 $1 $16 {[%cal Rc5e6]} Kb8 44. Nd7+ (44. Nxe6 Bxf2 45. Nf8 h5 $17) 44... Ka7 45. Nxe5) 43... Kb8 44. Ka5 h6 45. Kb5 h5 {[#]} (45... Be7 $1 $11) 46. Ka5 ({White has to play} 46. Ng3 $1 $16) 46... Ka8 47. Ka4 (47. Ng3 $11) 47... Ka7 $16 48. Kb5 Kb8 {[#]} 49. Kb4 (49. Ng3 $1 $16) 49... Ka7 $11 {The position is equal.} 50. Ka5 Ka8 51. Nc5 Bxf2 52. Nxe6 Bxe3 53. Nxc7+ Kb8 $132 {[%mdl 2048] Black is not keeping still} 54. Nd5 Ba7 $1 55. Kb5 {Threatening mate with c7+.} Kc8 $1 56. Nf6 Kc7 57. Nxh5 e4 58. Kc4 Kxc6 59. Nf6 $1 Bb8 60. Nxg4 Bxh2 61. Nxh2 {Precision: White = 71%, Black = 80%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Kryakvin, Dmitry"]
[Black "Bernotas, Arturs"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2583"]
[BlackElo "2431"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,47,93,84,91,87,96,95,97,97,109,110,118,119,169,123,127,125,120,127,153,153,165,160,193,177,195,164,245,183,459,456,734,719]} 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Nf6 5. dxc5 e5 (5... Na6 6. e4 Nxc5 7. Nc3 d6 8. Qd2 Bd7 9. Nge2 h6 10. Be3 Rc8 11. a4 Qa5 12. Nf4 g5 13. Nd3 Nxd3+ 14. cxd3 {1-0 (66) Adhiban,B (2672)-Karthikeyan,M (2585) Chengdu 2017}) 6. Bxe5 {A45: Trompowsky Attack} Bxc5 7. Bd4 Qb6 8. Bxc5 Qxc5 9. Qd2 {LiveBook: 3 Games} O-O {[#]} 10. Nc3 $1 d5 11. e3 Nc6 {[%cal Bb8c6,Bc6e5,Be5c4][%mdl 32]} 12. O-O-O Be6 13. Nge2 Rac8 $146 14. Nd4 Ne5 15. Kb1 a6 16. Bd3 b5 17. Nce2 Bd7 18. g4 Rfd8 19. Nf4 Nc4 20. Qf2 Ne8 21. Rhe1 Bc6 (21... Qd6 $142 22. Qh4 g6) 22. Nf5 {aiming for Qh4.} Qb4 $2 {[#]} (22... g6 {was worth a try.}) 23. c3 $18 Qf8 (23... Qxb2+ $142 24. Qxb2 Nxb2 25. Kxb2 Rc7) 24. Qh4 {Precision: White = 78%, Black = 33%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Neiksans, Arturs"]
[Black "Zakhartsov, Vladimir"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2582"]
[BlackElo "2430"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,55,19,29,12,12,4,70,60,129,123,161,141,243,220,231,229,232,223,340,322,385,326,343,318,2019,1991,1992,1896]} 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O d6 7. d4 cxd4 8. Qxd4 a6 9. Rd1 Be7 10. b3 Nbd7 11. Bb2 Qc7 12. e4 O-O 13. Qe3 Rfe8 14. Rac1 {A30: Symmetrical English: Double Fianchetto and Hedgehog} Rac8 15. h3 Qb8 {[#] LiveBook: 14 Games} 16. Nh2 $146 {White has an edge.} ({Predecessor:} 16. Nd4 Bf8 17. Re1 Ba8 18. Rcd1 Nc5 19. f3 g6 20. Qf2 Bg7 21. Bf1 Nh5 22. Bg2 Nf6 23. Re2 Rcd8 24. Ba1 Nh5 25. Red2 Bh6 26. Re2 Bg7 27. Red2 Bh6 28. Re2 {½-½ (28) Bocharov,D (2581)-Rozum,I (2602) Khanty-Mansiysk 2016}) 16... Qa8 17. Ng4 Nh5 ({Black should play} 17... Nxg4 $11 18. hxg4 b5) 18. Bf3 $14 Kf8 (18... Nhf6 $14) 19. Rd2 Nc5 {[#]} 20. Rcd1 $1 Qb8 (20... Rcd8 $16 {might work better.} 21. b4 Nd7) 21. b4 $18 Nd7 {[#]} 22. e5 $1 {[%cal Be4e5,Be5d6][%mdl 544]} Bxf3 (22... dxe5 23. Rxd7) 23. Qxf3 g6 (23... Qa8 {was worth a try.} 24. Qxa8 Rxa8) 24. exd6 Bg5 25. Ne4 Bxd2 26. Rxd2 Qb7 $2 (26... e5 27. Ng5 f6 28. Nxf6 Nhxf6) 27. Nh6 {[%csl Gh6][%cal Rf3f7]} f6 28. Nxf6 {Precision: White = 87%, Black = 30%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Kulaots, Kaido"]
[Black "Wan, Yunguo"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2577"]
[BlackElo "2482"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,52,5,21,15,16,18,0,191,176,197,117,117,117,248,291,296,292,296,220,235,172,191,152,268,182,225,211,209,266,256,194,194,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Bf4 d5 3. e3 g6 4. Nc3 Bg7 5. h4 O-O (5... c6 6. Nf3 Bg4 7. Be2 Nbd7 8. Ne5 Bxe2 9. Qxe2 h5 10. O-O-O Qa5 11. Kb1 {1-0 (44) Karjakin,S (2781)-Giri,A (2771) Stavanger 2017}) 6. h5 {D00: 1 d4 d5: Unusual lines} c5 7. hxg6 {LiveBook: 4 Games} hxg6 8. Qd2 Nc6 9. O-O-O c4 $146 (9... Qa5 $11 {and Black stays safe.}) ({Predecessor:} 9... Bf5 10. Bd3 Bxd3 11. Qxd3 {½-½ (20) Deghose,M (2192)-Storkan,Z (2146) LSS email 2011}) 10. f3 $1 $18 b5 11. g4 ({White should try} 11. Nxb5 $18 Nh5 12. e4) 11... b4 $16 {[#]} 12. Na4 $1 b3 (12... Qa5 $16 13. b3 Rd8) 13. axb3 $18 cxb3 14. cxb3 Bd7 15. Qh2 Nb4 {next ...Bxa4 is good for Black.} 16. Bh6 {Black must now prevent Bxg7.} Rc8+ 17. Kb1 {aiming for Bxg7.} Rc2 (17... Qc7 $16) 18. Ne2 {Hoping for Bxg7.} Bxa4 19. Bxg7 $40 {[%csl Gg7,Gh1][%cal Rh2h8][%mdl 128] White attacks with force.} (19. bxa4 $2 Qc8 $19) 19... Nh5 20. bxa4 ({Weaker is} 20. Bxf8 Bxb3 21. Bxe7 (21. gxh5 Qa5 $17) 21... Qa5 $17) 20... Qd7 21. Bxf8 ({But not} 21. gxh5 $2 Qxa4 22. Nc3 Qb3 $19) 21... Qxa4 {[%csl Gb4][%cal Ra4a2] [#]} 22. Nc3 $2 (22. Nc1 $1 $18 Rxh2 23. b3 Rxh1 24. bxa4 Kxf8 25. gxh5 gxh5 26. Ne2) 22... Rxc3 $1 $11 {The position is equal.} 23. bxc3 Qb3+ 24. Kc1 (24. Qb2 $5 {[%cal Rb2b3]} Qxd1+ 25. Qc1 Qb3+ 26. Qb2 Qd1+ 27. Qc1 Qb3+ 28. Qb2 Qd1+ $11) 24... Qxc3+ 25. Kb1 Qb3+ 26. Kc1 (26. Qb2 $5 {[%cal Rb2b3]} Qxd1+ 27. Qc1 Qb3+ 28. Qb2 Qd1+ 29. Qc1 Qb3+ 30. Qb2 Qd1+ $11) 26... Qc3+ {Precision: White = 83%, Black = 64%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Vorobiov, Evgeny E"]
[Black "Henderson de La Fuente, Lance"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2569"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "35"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,35,0,0,-18,-18,-22,-25,-13,0,0,0,0,27,19,56,-77,-77,-73,-25,-24]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Be2 d5 5. exd5 Nxd5 6. O-O Nxc3 7. bxc3 e4 {C47: Scotch Four Knights and Four Knights with 4 g3} 8. Ne1 Bd6 9. f3 Bf5 {LiveBook: 12 Games. The position is equal.} 10. Rb1 O-O 11. fxe4 $146 ({Predecessor:} 11. Rb5 Bg6 12. fxe4 Qh4 13. e5 Nxe5 14. d4 Ng4 15. Nf3 {1-0 (47) Popov,I (2627)-Paravyan,D (2428) Moscow 2014}) 11... Bxe4 {White must now prevent ...Qh4.} 12. Nf3 Qe7 13. d4 Rae8 14. Bd3 f5 15. Ng5 (15. Rxb7 $2 Nxd4 $1 {[%mdl 512]} 16. cxd4 Bxb7 $17) 15... Na5 16. Bd2 {[#]} (16. Qh5 $1 $14 {stays ahead.} g6 17. Qh6) 16... h6 $1 $17 {[%cal Rh6g5]} 17. Nh3 b6 18. Qh5 {Precision: White = 59%, Black = 47%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Ghosh, Diptayan"]
[Black "Percivaldi, Martin"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2562"]
[BlackElo "2407"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,65,45,37,40,40,29,34,30,30,33,33,38,29,55,54,63,34,46,37,43,37,43,44,96,99,164,157,157,136,145,137,126,131,181,190,317,233,340,299,325,323,310,279,29988,29989,29989,29990,29990,29991]} 1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. Nc3 a6 5. d4 Bf5 6. Ne5 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} Nbd7 7. Qb3 Qc7 8. cxd5 Nxe5 9. dxe5 Nxd5 10. Nxd5 {LiveBook: 39 Games} cxd5 11. Bd2 e6 12. Rc1 Qd7 13. Be2 {And now Qb6 would win.} Be7 {[#]} 14. Ba5 $146 Bd8 15. Bb4 Be7 16. Bxe7 Qxe7 17. Qb6 {Black must now prevent Rc7.} O-O 18. Rc7 Qg5 19. O-O Bh3 {[%csl Gh3][%cal Rg5g2] [#]} 20. Bf3 f6 ({Black should try} 20... h6 $14) 21. Kh1 $16 Bg4 (21... Bf5 $16 {keeps fighting.}) 22. Bxg4 $18 (22. Rxb7 $6 fxe5 23. Bxg4 Qxg4 $16) 22... Qxg4 23. h3 $36 {[%mdl 2048] White is on the roll.} ({Resist} 23. Qxb7 $6 fxe5 24. b3 Qg6 $14) 23... Qf5 24. exf6 Qxf6 25. Rxb7 Rac8 26. Qxa6 Rc2 (26... Ra8 {is a better defense.} 27. Qd6 Rxa2) 27. Qd6 h5 (27... Rd8 {was called for.} 28. Qb6 e5 29. Qxf6 gxf6) 28. Re7 Rd2 29. Rxe6 Qxb2 30. Re5 Qxa2 $2 {[#]} (30... Rf6 $18 31. Qe7 Qb8 32. Rxh5 Qd6 33. Qe8+ Rf8) 31. Qe6+ {White mates.} Rf7 32. Rf5 d4 33. Qe8+ {Precision: White = 85%, Black = 31%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Boruchovsky, Avital"]
[Black "Bracker, Frank"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2556"]
[BlackElo "2405"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,117,13,16,38,27,53,0,0,8,50,39,54,36,44,36,36,36,36,36,33,25,41,7,4,3,5,-13,0,-28,33,33,37,0,0,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,66,66,85,66,66,66,125,108,137,25,25,25,25,25,1419,1160,361,25,889,25,1425,1386,954,752,681,615,12835,12835,12840,12840,12842,12840,12842,12843,12847,12847,12849,12849,12850,12850,12850,29975,29972,29972,29982,29983,29983,29984,29985,29985,29985,29986]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. O-O d6 6. c3 {[%cal Bc2c3,Bc3d4,Bd4d5][%mdl 32]} O-O 7. h3 a6 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5} (7... Ne7 8. Re1 c6 9. Ba4 Ng6 10. d4 Bb6 11. Nbd2 Re8 12. Bc2 h6 13. a4 Bc7 14. Nf1 d5 15. Nxe5 Nxe5 16. dxe5 Bxe5 {1-0 (36) Hou,Y (2666)-Bacrot,E (2715) Biel 2017}) 8. Bxc6 bxc6 9. d4 {LiveBook: 7 Games} exd4 {The position is equal.} 10. cxd4 Bb6 11. Bg5 $146 (11. Nc3 $14) ({Predecessor:} 11. Nc3 Bb7 12. Re1 h6 13. Bf4 Re8 14. Qd3 g5 15. Bh2 Qd7 {½-½ (15) Kovarik,O (2103)-Puskas,M (2142) Slovakia 2003}) 11... h6 $11 12. Bh4 Re8 13. Nc3 Bb7 14. Qd2 c5 15. d5 Ba5 16. Rae1 c6 17. e5 dxe5 18. Nxe5 Bxc3 19. bxc3 Qxd5 (19... cxd5 $2 20. Ng4 $18) 20. Qb2 Bc8 $1 (20... Rxe5 $2 21. c4 $18) 21. f4 Bf5 22. Rd1 Rab8 (22... Qe4 $11) 23. Qf2 $14 Qe6 24. Bxf6 Qxf6 25. c4 Red8 26. Qxc5 Rxd1 27. Rxd1 Rb2 {White must now prevent ...Bxh3!} (27... Bxh3 $5 28. Nxc6 (28. gxh3 Qxf4 29. Nd3 Qg3+ 30. Kf1 Qxh3+ 31. Ke1 Qg4 $15) 28... Bg4 $11) 28. Qd4 $36 {[%mdl 2048] Black is under pressure.} ({But not} 28. Nxc6 Be4 $19) 28... Rxa2 29. g4 Bc2 30. Rd2 c5 31. Qd8+ Kh7 $1 32. Qxf6 gxf6 33. Nxf7 $11 {[%mdl 4096] Endgame KRB-KRN} Ra1+ (33... a5 $11) 34. Kf2 $14 Bg6 35. Rd7 Bxf7 $1 36. Rxf7+ {KR-KR} Kg6 37. Rc7 {And now h4 would win.} h5 38. Rxc5 ({Better is} 38. Rc6 $1 $16) 38... hxg4 $1 $11 39. hxg4 {aiming for Rc6.} a5 40. Rc6 {g5 is the strong threat.} Kf7 $2 {[%mdl 8192]} (40... Kg7 $11) 41. Kf3 Re1 42. Rc5 $2 ({White must play} 42. Rc7+ $1 $18 Ke8 43. Rc5) 42... Rc1 $2 {[%mdl 8192]} (42... a4 $11) 43. Ke4 $2 (43. Rc7+ $18 Ke8 44. Ke4) 43... Kg6 $2 {[%mdl 8192]} (43... a4 $11) 44. Rc6 $18 Re1+ 45. Kd4 Rf1 46. Ke3 $1 Kf7 47. Ke4 Rc1 48. Kf5 Ke7 49. Re6+ Kd7 50. Ra6 Rxc4 51. Rxa5 Ke7 {[#]} 52. Ra6 $1 {[%cal Ra6e6]} Rc5+ {[#]} 53. Kg6 $1 Rc8 54. Rxf6 Rg8+ {White mates.} 55. Kf5 Rxg4 56. Re6+ ({Not} 56. Kxg4 Kxf6 57. Kh5 Kf7 $11) 56... Kf7 57. Kxg4 Kxe6 58. Kg5 Kf7 59. Kf5 {Precision: White = 60%, Black = 47%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Schroeder, Jan-Christian"]
[Black "Kaasen, Tor Fredrik"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2539"]
[BlackElo "2399"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,63,17,8,22,20,33,32,31,26,21,25,33,37,37,19,27,33,82,51,214,203,218,218,220,247,225,234,239,244,217,197,439,421,432,432,416,400,893,821,1296,176,1824,1760,29996,29997,29997,29998]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 a6 6. a4 {C50: Hungarian Defence and Giuoco Pianissimo} d6 7. c3 Ba7 8. Re1 O-O 9. h3 h6 10. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1g3,Bg3f5][%mdl 32] LiveBook: 59 Games} Re8 11. b4 Be6 12. Bxe6 Rxe6 13. Qc2 Ne7 14. Nf1 Ng6 {[#]} 15. Ng3 $146 d5 16. c4 dxc4 17. dxc4 Nf4 18. Rd1 Rd6 $2 ({Black should play} 18... Qe8 $14) 19. Bxf4 $1 $18 exf4 20. Nf5 Rxd1+ 21. Rxd1 Qe8 22. e5 Nh7 {[#]} 23. Qe4 $1 {[%cal Re4b7]} Qxa4 24. Re1 {aiming for e6.} Qxb4 $2 (24... Re8 {was called for.}) 25. e6 fxe6 26. Qxe6+ Kh8 27. Qg6 {[%csl Gf5][%cal Rg6g7]} Rg8 (27... Bxf2+ $142 28. Kxf2 Qb2+ 29. Re2 Nf8 30. Qxh6+ (30. Rxb2 Nxg6 31. N3d4 Rb8 $18) 30... gxh6 31. Rxb2 b6) 28. Re8 {[%csl Gf5][%cal Rg6g7]} Nf8 {[#]} 29. Qf7 $2 $40 {[%mdl 128] White has strong attack.} (29. Rxf8 $1 {[%csl Gf5][%cal Rg6g7][%mdl 512]} Bxf2+ (29... Qxf8 30. Ng5) 30. Kh2 Bg3+ 31. Kh1 Qb1+ 32. Ng1 Qxf5 33. Rxf5) 29... Qc5 $2 (29... Bc5 30. Ne5 Qb2) 30. Ne7 {[%csl Ge7][%cal Rf7g8]} Qxf2+ 31. Kh2 {[%csl Ge7][%cal Rf7g8]} Qg3+ 32. Kh1 {Precision: White = 69%, Black = 18%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Vishnu Prasanna  V"]
[Black "Pavlov, Sergey"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "2538"]
[BlackElo "2475"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,70,6,30,-133,51,52,52,50,42,-43,-35,-41,-22,-5,-37,-40,-45,-46,-38,-171,-164,-164,-170,-160,-142,-208,-158,-232,-164,-164,-172,-169,-148,-260,-262,-265,-264,-250,-259,-244,-250,-365,-363,-329,-331,-447,-436,-521,-517,-566,-564,-985,-496]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 Qb6 10. Bd3 Ba6 11. c4 $2 {B45: Sicilian Four Knights} (11. Bxa6 $11 Qxa6 12. Qe2 Qxe2+ 13. Kxe2) (11. Qe2 Bxd3 12. Qxd3 f5 13. exf6 Nxf6 14. Nxf6+ gxf6 15. Be3 Qxb2 16. O-O Qa3 17. Qe2 h5 18. Rab1 Bc5 19. Rb3 Bxe3+ {½-½ (19) Fernandez Romero,E (2434)-Parligras,M (2494) Seville 2007}) 11... Ne3 $2 (11... Qd4 $17 12. Qb3 Nb4) 12. Qe2 $1 $14 Bb4+ 13. Kf2 $146 {White is slightly better.} ({Predecessor:} 13. Bd2 Bxd2+ 14. Qxd2 Nf5 15. c5 Qb7 16. Bxa6 Qxa6 17. g4 Ne7 18. Nd6+ Kf8 19. f5 Nd5 20. fxe6 dxe6 21. Rf1 {1-0 (21) Hoffmann,H (2320)-Werner,H (1898) Leipzig 2001}) 13... Nc2+ 14. Kg3 ({White should play} 14. Be3 $1 $14 Nxe3 15. Qxe3) 14... Nxa1 $15 15. Be3 Qa5 16. Rxa1 Be7 17. Bd2 Qc7 18. Rd1 c5 19. Nd6+ (19. Bc2 $15) 19... Bxd6 $19 20. exd6 Qxd6 21. Be4 Rc8 22. Bc3 (22. b3 $17 {was necessary.}) 22... Qe7 23. Qg4 (23. Qc2 $17 {keeps fighting.}) 23... f6 ({Don't go for} 23... Bxc4 $2 24. Qxg7 Qf8 25. Qxh8 $18) 24. Qh5+ Kf8 25. b3 d6 {[%cal Bd7d6,Bd6d5][%mdl 32]} 26. f5 {[#]} (26. Re1 $17) 26... d5 $1 {[%cal Rd5e4]} 27. cxd5 exd5 28. Bf3 d4 29. Bd2 Bb7 30. Re1 (30. Be2 {might work better.}) 30... Bxf3 31. Qxf3 Qd7 32. Bf4 Kf7 {Black is clearly winning.} 33. Qh5+ g6 34. Qh6 Qxf5 35. Rf1 Qh5 {Precision: White = 25%, Black = 75%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Bailet, Pierre"]
[Black "Agmanov, Zhandos"]
[Result "0-1"]
[ECO "C07"]
[WhiteElo "2536"]
[BlackElo "2393"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,90,23,26,17,27,20,41,0,0,0,-2,-17,0,0,0,-32,0,0,16,27,13,-8,-8,-8,0,4,26,21,43,40,96,61,87,64,133,126,129,83,74,59,58,57,69,0,0,0,0,0,0,-658,-657,-657,-655,-635,-629,-557,-543,-528,-528,-520,-513,-616,-603,-644,-622,-635,-622,-625,-612]} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. Nxd4 Nc6 6. Bb5 Bd7 7. Nxc6 Bxc6 8. Bxc6+ bxc6 9. c4 Nf6 10. Qa4 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5 Qxd5} Qd7 11. e5 Ng8 {[%cal Bf6g8,Bg8e7,Be7g6][%mdl 32]} (11... Ng4 12. Nf3 f6 13. exf6 gxf6 14. cxd5 exd5 15. O-O Bd6 16. Bf4 c5 17. Rfe1+ Be7 18. Rxe7+ Kxe7 {1-0 (46) Anand,V (2803)-Bartel,M (2622) Berlin 2015}) 12. O-O Ne7 {LiveBook: 18 Games} 13. Rd1 $146 ({Predecessor:} 13. Nf3 Nf5 14. Bd2 Bc5 15. Rac1 Bb6 16. Rfe1 Ne7 17. c5 Bd8 {½-½ (30) Kaczur,F (2431)-Kosic,D (2486) Budapest 2017}) 13... Ng6 14. Nf3 Bc5 15. b3 O-O 16. cxd5 exd5 17. Bb2 Rac8 18. Rac1 Bb6 19. h3 Rfe8 20. Bd4 Bxd4 21. Qxd4 Qf5 22. Qd3 Qxd3 23. Rxd3 f6 24. Rdc3 $36 {[%mdl 2048] White is pushing.} fxe5 (24... Nxe5 {looks sharper.} 25. Nd4 Rcd8 26. R1c2 Rd7 27. f4 Ng6) 25. Rxc6 Rxc6 26. Rxc6 $11 {[%mdl 4096] Endgame KRN-KRN} Rd8 (26... Nf4 $14) 27. Kf1 d4 28. Nd2 Rd7 ({Black should try} 28... Nf4 $14) 29. g3 $16 Kf7 30. Ke2 Ne7 31. Ra6 {And now Nc4 would win.} Nd5 32. Nc4 Nc3+ 33. Kd3 (33. Kd2 $14 Ne4+ 34. Kd1) 33... e4+ $11 34. Kd2 {Ne5+ is the strong threat.} Kf8 35. Ne5 Re7 36. Nc6 $2 {[%mdl 8192]} (36. Nc4 $11) 36... e3+ $1 $19 {Black is clearly winning.} ({Not} 36... Re6 37. Nb8 $15) 37. Ke1 exf2+ 38. Kxf2 Re2+ $1 39. Kf3 d3 {[%cal Bd4d3,Bd3d2][%mdl 32] White must now prevent ...d2.} 40. Rxa7 d2 $1 {[%cal Rd2d1]} 41. Rd7 {[#]} Rh2 $1 42. Rd8+ Kf7 43. Ne5+ {[#]} Ke7 $1 {[%cal Re7d8]} 44. Nc6+ Ke6 {Threatens to win with ...Nd5.} 45. Nd4+ Kf7 {Precision: White = 55%, Black = 48%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Dastan, Muhammed Batuhan"]
[Black "Smirin, Ilia"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2529"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,80,10,18,8,9,10,20,21,27,27,42,6,6,11,16,-16,-11,-64,-58,-93,-89,-88,-88,-88,-56,-34,-39,-18,-33,-32,5,0,55,-29,0,0,0,0,14,15,20,0,0,0,0,0,0,0,5,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h4 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} Nc6 {LiveBook: 7 Games} 7. Be3 Ng4 8. Nxc6 bxc6 9. Bd2 h5 10. f3 Ne5 $146 ({Predecessor:} 10... Nf6 11. Bg5 Be6 12. Qd2 g6 13. Ne2 Bg7 {1-0 (46) Shankland,S (2676)-Ortiz Suarez,I (2570) Matanzas 2017}) 11. Be3 Rb8 12. b3 g6 13. Bd4 Bg7 14. Ne2 (14. f4 $11) 14... O-O (14... c5 $5 {[%cal Rc5d4]} 15. Bc3 O-O $15) 15. f4 Ng4 16. Bxg7 Kxg7 17. Qd2 e5 18. fxe5 $1 dxe5 (18... Qb6 $5 {[%cal Rb6f2]} 19. Qd4 dxe5 20. Qxb6 Rxb6 $17) 19. Qxd8 $1 Rxd8 20. Rh3 f5 21. Rc3 f4 (21... Rb4 $11) 22. g3 (22. Ng1 $1 $14) 22... Ne3 {[#] aiming for ...Rb4.} (22... Rf8 {seems wilder.} 23. gxf4 Rb4 24. Bg2 exf4 25. Rxc6 f3) 23. gxf4 {The position is equal.} Nxf1 24. Kxf1 Bg4 25. Ke1 exf4 {Hoping for ...Rb4.} 26. Rxc6 Rf8 {[#] Strongly threatening ...f3.} 27. Nc3 ({Wrong is} 27. Rxa6 $2 f3 $19) 27... Rbc8 28. Rxc8 Rxc8 $11 {[%mdl 4096] Endgame KRB-KRN} 29. Kd2 $1 Kf6 (29... g5 $5) 30. Nd5+ Ke5 31. c4 Rf8 32. Ke1 Kxe4 {Threatens to win with ...Kf3.} 33. Kf2 a5 {[%cal Ba6a5,Ba5a4][%mdl 32]} 34. Ne7 a4 35. Re1+ Kd4 36. Nxg6 Rf6 37. Ne5 axb3 38. axb3 Ra6 {...Ra2+ is the strong threat.} 39. Nf3+ Kc3 40. Re4 Ra2+ {Precision: White = 62%, Black = 54%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Ali Marandi, Cemil Can"]
[Black "Gokerkan, Cem Kaan"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2526"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,109,37,37,60,23,41,0,11,-23,-18,-29,-25,-22,-19,-21,0,-39,-28,-41,0,0,15,19,20,7,0,-4,72,55,65,58,118,114,285,300,290,279,328,247,439,433,490,490,473,468,843,771,810,602,750,580,750,451,451,451,451,451,451,445,512,505,825,818,864,858,801,622,1027,981,1418,1407,1104,1029,1132,1060,4698,5522,1581,5054,12839,12839,12840,12840,12843,12842,12842,12841]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 5. d4 O-O 6. c4 dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bd2 Ra7 {E05: Open Catalan: 5 Nf3 Be7} (10... Be4 11. Qc1 c6 12. Rd1 Nbd7 13. Nc3 Bg6 14. a3 c5 15. Be3 Qc7 16. Ne5 cxd4 17. Nxg6 hxg6 18. Bxa8 dxe3 19. Nd5 exf2+ {1-0 (80) Hou,Y (2652)-Hammer,J (2621) Moscow 2017}) 11. Rc1 Be4 12. Qb3 Bd5 13. Qe3 {LiveBook: 8 Games} Ne4 14. Be1 $146 (14. Ne5 $5 {[%cal Rg2e4]} Nd6 15. Bxd5 exd5 16. Bb4 $14) ({Predecessor:} 14. Ba5 Nd6 15. b3 Nc6 16. Rxc6 Nf5 17. Qc1 Bxc6 18. Qxc6 Nxd4 19. Nxd4 Qxd4 {½-½ (41) Rut,V (2105)-Walid,A (1887) Prague 2013}) 14... Nd6 15. Nbd2 Nd7 16. Qd3 Qa8 17. Nb3 Nc4 18. Bc3 Be4 19. Qd1 Rc8 20. Nbd2 Nxd2 21. Qxd2 c5 (21... a5 $5 {[%cal Rb5b4]} 22. Qf4 b4 $15) 22. dxc5 Nxc5 23. Qf4 f6 24. Qe3 {Ba5 is the strong threat.} a5 25. Bh3 Kf7 (25... f5 $1 $11 {remains equal.}) 26. Nd4 b4 27. Be1 $1 {[%cal Bc3e1,Be1f2,Bf2e3][%mdl 32] And now Nxe6! would win.} Ra6 {[#]} (27... Rd8 $14) 28. Nxe6 $1 $16 {[%mdl 512]} Rxe6 $2 (28... Nxe6 $16 29. Rxc8 Qxc8 30. Qxe4 g6) 29. Bxe6+ $18 Kxe6 30. f3 f5 31. Bf2 ({Much less strong is} 31. fxe4 $6 Nxe4 32. Bf2 (32. Rxc8 Qxc8 33. Rc1 Bc5 $18) 32... Bc5 $18) 31... g5 $2 (31... a4 {was called for.} 32. Be1 Qb7 33. fxe4 Nxe4 34. Rxc8 Qxc8 35. Qb6+ Kf7 36. Bxb4 Bf6) 32. fxe4 {White is clearly winning.} Nxe4 33. Qb3+ Ke5 34. Qf7 ({Weaker is} 34. Rxc8 Qxc8 35. Rd1 Nxf2 $18) 34... Bf8 (34... Rxc1+ $142 35. Rxc1 Qf8 36. Qxh7 Nf6 37. Bd4+ Ke6 38. Rc6+ Bd6) 35. Be3 Nd6 36. Qxh7 Qe4 37. Bf2 Nc4 38. Qh8+ ({Less strong is} 38. b3 Ne3 $14) 38... Ke6 {intending ...Ne3.} 39. Qd4 Qxd4 40. Bxd4 Kd5 41. Rd1 Ke4 42. Rac1 a4 (42... Be7 $142 43. b3 Nd6) 43. b3 axb3 44. axb3 Nd6 45. Bc5 f4 46. g4 f3 47. exf3+ Kxf3 48. Rf1+ Kxg4 {[#]} 49. Rxf8 $1 {[%mdl 512]} Rxf8 50. Bxd6 {KRB-KR} Rf3 51. Rb1 Kh3 52. Bxb4 g4 53. Bc5 Rc3 54. b4 Rc2 55. Rb3+ {Precision: White = 77%, Black = 24%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Blomqvist, Erik"]
[Black "Braun, Arik"]
[Result "1/2-1/2"]
[ECO "A10"]
[WhiteElo "2525"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,66,3,45,13,22,19,21,10,20,16,13,15,15,16,9,12,3,0,0,0,19,0,0,0,0,0,-5,-36,-14,-45,-27,-66,-30,-38,-45,-48,-42,-41,0,0,56,52,62,66,71,0,102,0,0,0,0,0,0,0,0]} 1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. e3 Nc6 5. Ne2 d6 6. Nbc3 h5 7. h3 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7} Nh6 {LiveBook: 12 Games} (7... e5 8. a3 Be6 9. d3 Nge7 10. Nd5 O-O 11. Rb1 Rb8 12. Nec3 a6 13. g4 h4 14. g5 b5 {0-1 (55) Vera Gonzalez Quevedo,R (2439)-Oliva Castaneda,K (2498) Matanzas 2017}) 8. b3 Bd7 9. Bb2 a6 $146 ({Predecessor:} 9... Nf5 10. Rb1 a6 11. O-O Rb8 12. Ne4 Bxb2 13. Rxb2 b5 14. d3 bxc4 15. dxc4 {0-1 (46) Kleman,M (2207)-Lanc,A (2369) Banska Stiavnica 2013}) 10. d4 cxd4 $1 11. Nxd4 Nxd4 12. exd4 Rb8 13. Qd2 Nf5 14. Ne4 b5 15. c5 d5 16. Nc3 e6 17. Ne2 b4 18. O-O Bb5 19. Rfe1 O-O 20. h4 (20. a4 $5 {[%cal Ra4b5]} bxa3 21. Rxa3 $11) 20... Qf6 21. Red1 Rfc8 (21... Bh6 $5 {[%cal Rh6d2]} 22. Qc2 a5 $15) 22. a4 bxa3 (22... Bxe2 $5 23. Qxe2 a5 $11) 23. Rxa3 Bh6 24. Qc2 g5 25. hxg5 $1 Qxg5 26. Bc1 Qg4 (26... Qg7 $11) 27. Nf4 $14 {Threatens to win with Bh3.} Bxf4 28. Bxf4 Rb7 29. Kh2 (29. b4 $16) 29... Nh4 (29... h4 $11 {keeps the balance.}) 30. Bh3 (30. b4 $16) 30... Nf3+ $11 {The position is equal.} 31. Kg2 Nh4+ 32. Kh2 Nf3+ 33. Kg2 Nh4+ {Precision: White = 42%, Black = 60%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Sulskis, Sarunas"]
[Black "Onischuk, Vladimir"]
[Result "0-1"]
[ECO "E73"]
[WhiteElo "2519"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "148"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,148,37,43,21,56,2,8,12,21,0,0,0,0,0,0,0,0,-45,-17,-25,-27,-20,-24,-27,-13,-18,-9,-15,-11,-9,-8,-2,0,-29,0,0,0,0,0,-4,0,0,0,0,0,0,0,0,0,0,0,0,0,-79,-75,-70,-70,-65,-35,-31,-7,0,0,0,0,0,-3,-3,-8,-83,-82,-85,-71,-70,-20,-72,-75,-162,-119,-108,-100,-105,-113,-113,-110,-112,-105,-107,-100,-117,-100,-74,-47,-63,-52,-62,-64,-61,0,-8,0,-56,-9,-9,0,-8,0,-30,-30,-30,-30,-30,-33,-33,-31,-49,-17,-34,-16,-74,-74,-74,-68,-68,-24,-24,-24,-71,-71,-71,-71,-400,-32,-114,-116,-1301,-1348]} 1. c4 d6 2. d4 g6 3. Nc3 Bg7 4. e4 Nf6 5. Be2 O-O 6. Be3 c6 7. h4 {E73: King's Indian: Averbakh Variation without 6...c5} (7. Nf3 Na6 8. O-O e5 9. dxe5 dxe5 10. h3 Qe7 11. Qc2 Nh5 12. Rfd1 Nf4 13. a3 Nc5 14. b4 Nxe2+ 15. Nxe2 Ne6 16. c5 a5 17. Bd2 Re8 18. Bc3 Nc7 {0-1 (51) Vogel,R (2462)-Naiditsch,A (2702) Dresden 2017}) 7... h5 {LiveBook: 3 Games} 8. Qd2 e5 $146 ({Predecessor:} 8... a5 9. O-O-O a4 10. a3 Qa5 11. f3 Nbd7 12. g4 e5 13. Kb1 Rb8 14. g5 Ne8 {½-½ (67) Mueller,K (2525)-Buhr,C (2392) Hamburg 2001}) 9. Rd1 (9. O-O-O $14) 9... exd4 $11 10. Bxd4 Re8 11. Nf3 Nxe4 12. Nxe4 Rxe4 13. Bxg7 Kxg7 14. Ng5 Re8 15. O-O Nd7 {[%cal Bb8d7,Bd7f6,Bf6g4][%mdl 32]} 16. Rfe1 Nf6 17. Qxd6 Qxd6 18. Rxd6 Bf5 19. Kf1 Ng4 20. Nf3 Rad8 21. Red1 Rxd6 22. Rxd6 Nf6 23. Nd2 a5 24. f3 a4 25. Kf2 Ra8 26. Nf1 a3 27. b3 Nd7 28. Ng3 Nc5 29. Nxf5+ gxf5 {[%mdl 4096] Endgame KRB-KRN} 30. Bd1 f4 31. b4 Na6 32. b5 Nb4 33. bxc6 (33. Bb3 $11) 33... bxc6 $17 34. Bb3 c5 35. g3 fxg3+ (35... Rb8 $5 {[%cal Rb4a2]} 36. gxf4 Nxa2 37. Bxa2 Rb2+ 38. Ke3 Rxa2 $17) 36. Kxg3 Re8 37. Rd7 Re3 38. Rc7 Nd3 39. Ra7 Re2 40. Rxa3 f5 41. f4 (41. Ra7+ $11 {remains equal.} Kf6 42. Rh7) 41... Re3+ 42. Kh2 {[#] Threatens to win with Bd1.} Nxf4 43. Ra5 Rh3+ 44. Kg1 Ne6 45. Rb5 (45. Ba4 $17 {is a better defense.}) 45... Kf6 46. a4 Nd4 47. Rb6+ Ke5 48. Bd1 Ra3 {aiming for ...Ra1.} 49. Bxh5 Rxa4 50. Bf7 Ra7 51. Bd5 Rh7 52. Rb8 Ne2+ 53. Kf2 Nc3 $1 {[%cal Rc3d5]} 54. Rc8 Kd4 55. Rf8 Ke5 (55... Rh5 $15) 56. Rc8 $11 Kd4 57. Rf8 $1 Ne4+ 58. Kf3 Nd2+ (58... Rxh4 $5 {[%cal Rh4h2]} 59. Rxf5 Nd2+ 60. Kg3 Rh6 $11) 59. Kg3 Nf1+ 60. Kf4 Rxh4+ 61. Kxf5 {And now Kg5 would win.} Ne3+ 62. Kg5 Rg4+ 63. Kh5 Rg7 64. Bg8 Ke5 65. Bf7 Rg1 66. Bg6 (66. Re8+ $11 Kd4 67. Rd8+ Kc3 68. Rc8) 66... Nxc4 $17 67. Re8+ Kd6 68. Bf7 Nb6 69. Re6+ Kc7 70. Rg6 Rf1 71. Bg8 Nd7 {Strongly threatening ...Nf6+.} 72. Kg5 $2 {[%mdl 8192] [#]} (72. Bb3 $17 {is tougher.}) 72... Ne5 $2 (72... Nf8 $1 $19 {[%cal Rf8g6]} 73. Rg7+ Kd6) 73. Re6 (73. Rf6 $15 Nf3+ 74. Kf5) 73... Rg1+ 74. Kf5 $2 {[%mdl 8192]} (74. Kf6 $17) 74... Nc6 {Precision: White = 51%, Black = 60%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Kollars, Dmitrij"]
[Black "Pershin, Denis"]
[Result "1/2-1/2"]
[ECO "B18"]
[WhiteElo "2514"]
[BlackElo "2353"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,56,29,0,0,2,23,0,0,0,0,-10,-10,-28,-18,-29,-29,-18,-25,-19,0,-45,0,-11,0,0,0,-26,-21,-35,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nf6 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 c5 12. Ne4 {B19: Classical Caro-Kann: 4...Bf5 main line} cxd4 (12... Nc6 13. Bc3 cxd4 14. Nxd4 Nb4 15. Nxf6+ gxf6 16. Bxb4 Bxb4+ 17. c3 Be7 18. O-O-O Qb6 19. Qb5+ Kf8 {1-0 (55) Wei,Y (2727)-Wang,H (2690) China 2017}) 13. Nxf6+ {LiveBook: 5 Games} Qxf6 14. Qxd4 $146 ({Find the theoretical novelty and annotate with similar games:} 14. Qb5+ Nd7 15. Qxb7 Rb8 16. Qxa7 Bc5 17. Qa6 Rxb2 18. O-O O-O 19. Rab1 Rbb8 {1-0 (52) Salai,L (2395)-Gavrilov,A (2487) Olomouc 2002}) 14... Nd7 15. Be3 Bc5 16. Qxf6 gxf6 17. Bxc5 Nxc5 18. Ke2 Rg8 19. g3 Ke7 20. Rh4 f5 21. Rd4 Rac8 22. Rad1 Rc7 23. c3 Ne4 24. Ne5 Nf6 25. Rc4 Rxc4 26. Nxc4 f4 27. gxf4 Nxh5 28. f5 Rc8 {Precision: White = 54%, Black = 66%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Meskovs, Nikita"]
[Black "Alekseenko, Kirill"]
[Result "1-0"]
[ECO "E15"]
[WhiteElo "2495"]
[BlackElo "2575"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,97,30,17,27,0,0,0,10,4,4,10,20,-27,-8,-24,-27,-25,-28,-18,-18,-106,0,0,0,0,0,0,0,0,0,0,0,0,88,97,305,303,310,312,295,280,281,260,305,309,256,303,322,319,299,297,332,325,347,339,546,543,542,534,950,958,718,695,659,656,796,756,1202,1160,1514,1514,2029,1632,29985,29986,29973,1031,1845,1541,29991,29992,29992,29991]} 1. c4 e6 2. Nf3 Nf6 3. d4 b6 4. g3 Bb4+ 5. Nbd2 Bb7 6. Bg2 O-O 7. O-O d5 8. Ne5 Re8 {E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+} (8... Nbd7 9. Nxd7 Qxd7 10. a3 Be7 11. cxd5 exd5 12. Nf3 Bd6 13. Bf4 Bxf4 14. gxf4 c5 15. e3 Qe7 16. dxc5 bxc5 17. Qc2 Rac8 18. Qf5 Rfd8 {½-½ (33) Eljanov,P (2757)-Vitiugov,N (2718) Novi Sad 2016}) 9. a3 {LiveBook: 4 Games} Bd6 10. cxd5 exd5 {The position is equal.} 11. Ndc4 Bf8 (11... Bxe5 $5 12. Nxe5 Nbd7 $11) 12. Bg5 $146 ({Predecessor:} 12. Qc2 Ne4 13. Nd2 Nxd2 14. Bxd2 c5 15. Bc3 Nd7 16. Qf5 Nxe5 17. dxe5 Rb8 {½-½ (57) Lopez Mulet,I (2343)-Mesaros,F (2270) Prague 2016}) 12... Qc8 13. Nd2 Qe6 (13... Qf5 $5 {[%cal Rf5g5]} 14. Bxf6 Qxf6 $11) 14. f4 c5 15. f5 Qd6 16. Bf4 Qd8 17. e3 Nc6 18. g4 (18. Ndf3 $11) 18... h6 ({Black should try} 18... cxd4 $17 19. Nxc6 Bxc6 20. exd4 Bb5) 19. Ndf3 $1 $11 Bd6 20. h4 h5 $1 {[%cal Rh5g4]} 21. g5 $1 $36 {[%cal Rg5f6][%mdl 2048] White has the initiative.} Ng4 22. g6 fxg6 23. fxg6 {aiming for Nf7.} Bxe5 24. dxe5 Ne7 {[#]} (24... Qd7 $11 {keeps the balance.}) 25. Ng5 $1 $16 {Black must now prevent Bg3.} Rf8 $2 {[#]} (25... Qc8 $16 {was necessary.}) 26. Bh3 $1 $18 {[%cal Rh3g4]} ({Weaker is} 26. Ne6 Qd7 $14) 26... Qe8 27. Bxg4 hxg4 28. h5 Nf5 29. Qxg4 Qc6 30. Rae1 Rae8 ({Reject} 30... d4 31. e4 $18) 31. Nh7 Bc8 {intending ...Nxe3.} 32. Nxf8 Rxf8 33. Bh2 Be6 34. Qg5 Qd7 35. Rf3 Rd8 $2 (35... Nh6) 36. Ref1 {[%cal Rf3f5]} Nh6 37. Bg3 d4 38. Bh4 Re8 39. Qf4 {Intending Qf8+! and mate.} Qc8 40. exd4 cxd4 41. Qxd4 Nf5 42. Qf2 Nxh4 43. Qxh4 {White threatens h6 and mate.} Bd5 44. R3f2 {White wants to mate with h6.} Qe6 45. Qb4 Qc8 46. Kh2 (46. Qf4 $142 Qc5 47. h6 Kh8 48. hxg7+ Kxg7 49. Qf6+ Kg8 50. g7 Qe7 51. Qf8+ Rxf8 52. gxf8=Q+ Qxf8 53. Rxf8+ Kg7 54. R1f6) 46... a5 47. Qxb6 Bc6 48. Qb3+ Kh8 49. Qf7 {Precision: White = 78%, Black = 46%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Christiansen, Johan-Sebastian"]
[Black "Badelka, Olga"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2475"]
[BlackElo "2335"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,98,0,0,-1,6,3,46,0,5,8,0,-9,6,-8,0,-18,-4,-14,-22,-25,11,12,22,13,19,0,29,30,12,-12,0,0,0,0,1,0,25,18,15,0,0,0,0,0,0,0,0,0,0,-9,0,0,0,0,41,26,30,43,88,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Nxc6 bxc6 7. Bd3 d5 8. O-O Be7 9. Qe2 O-O {LiveBook: 28 Games. B40: Sicilian: 2...e6, Unusual lines} 10. Re1 (10. b3 Bb7 11. Bb2 c5 12. Rad1 Qc7 13. Nb5 Qb6 14. e5 Nd7 15. c4 d4 16. f4 g6 17. Be4 Bxe4 18. Qxe4 {1-0 (61) Pichot,A (2544)-Tregubov,P (2585) Doha 2016}) 10... Re8 11. Bf4 $146 ({Predecessor:} 11. b3 Bb4 12. Bd2 Qa5 13. a3 Bxc3 14. b4 Qd8 15. Bxc3 d4 16. Bb2 e5 17. c3 {½-½ (49) Muratet,L (2045)-Di Nicolantonio,L (2322) Nimes 2012}) 11... d4 12. Nb1 Nd7 13. Nd2 e5 14. Bg3 Bf6 15. c3 Rb8 16. Rab1 Nc5 17. Bc4 dxc3 18. bxc3 Be6 19. Bxe6 Rxe6 20. Nc4 {[%cal Bd2c4,Bc4e3,Be3f5,Bf5d4][%mdl 32]} Na4 21. Rbd1 Qc7 22. Qc2 Nb6 23. Ne3 Bg5 24. Nf5 g6 25. h4 Bf4 26. Bxf4 exf4 27. Nd4 Re7 28. c4 (28. e5 $5) 28... Rbe8 29. Nf3 Nd7 30. Qd2 c5 31. Re2 Nb6 32. Qc2 Nd7 33. Qa4 Ne5 34. Nxe5 Qxe5 35. Qa5 f3 36. gxf3 Qh5 37. Re3 Re5 38. Rd8 (38. Rd5 $16) 38... Qxh4 $11 {The position is equal.} 39. Rxe8+ Rxe8 40. Qxc5 {[%mdl 4096] Endgame KQR-KQR} Rd8 {[#] ( -> ...Rd1+)} 41. Re1 Rd3 42. Kg2 Qf4 43. Re3 Rd1 44. Qa5 h5 {[#] ...h4 is the strong threat.} (44... a6 $5) 45. Re1 $1 {[%cal Re1d1]} Rd3 46. Re3 $1 {[%cal Re3d3]} Rd1 47. Re1 $1 {[%cal Re1d1]} Rd3 48. Re3 $1 {[%cal Re3d3]} Rd1 49. Re1 $1 {[%cal Re1d1]} Rd3 {Precision: White = 72%, Black = 45%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Tang, Andrew"]
[Black "Lavendelis, Egons"]
[Result "1-0"]
[ECO "D70"]
[WhiteElo "2475"]
[BlackElo "2271"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,127,28,28,40,34,33,0,89,78,86,63,117,65,93,70,75,58,69,62,47,34,26,0,69,54,50,41,64,14,15,22,84,33,140,133,140,133,206,203,206,206,257,232,238,230,230,231,227,227,385,375,466,469,614,618,582,614,606,585,630,625,666,756,725,713,701,698,764,749,729,712,716,644,958,885,1027,1016,2400,2388,1312,1177,5377,3607,6418,10834,12790,12790,9400,9204,5469,4658,3964,847,843,843,843,837,831,779,29972,29973,29973,29974,29981,29983,29986,29987,29988,29987,29987,29988,29991,29992,29992,29993]} 1. d4 Nf6 2. c4 g6 3. f3 d5 4. cxd5 Nxd5 5. e4 Nb6 6. Nc3 Bg7 7. Be3 O-O 8. Qd2 c6 {D70: Grünfeld: Unusual White 3rd moves (met by ...d5)} (8... Nc6 9. O-O-O Qd6 10. Kb1 Rd8 11. Nb5 Qd7 12. d5 a6 13. Nc3 Qe8 14. Qc1 Na5 15. h4 e6 16. Bf4 Rd7 17. Bh6 Bxh6 18. Qxh6 exd5 {½-½ (35) Aronian,L (2809)-Svidler,P (2749) Geneve 2017}) 9. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} e5 10. d5 f5 (10... cxd5 $11 {remains equal.} 11. exd5 h5) 11. h5 $16 cxd5 12. exd5 f4 ({Black should try} 12... gxh5 $14 13. Rxh5 f4) 13. Bf2 $146 (13. Bc5 $16) ({Find the theoretical novelty and annotate with similar games:} 13. Bc5 Re8 14. hxg6 hxg6 15. O-O-O Bf5 16. Bxb6 axb6 {0-1 (40) Ehlvest,J (2536)-Lavendelis,E (2271) Tallinn 2017}) 13... Bf5 $14 14. Bd3 N8d7 15. Nge2 Rc8 16. hxg6 hxg6 17. Bxf5 gxf5 18. d6 Nf6 ({Black should play} 18... Nc4 $11 19. Qd5+ Rf7) 19. Bxb6 Qxb6 20. O-O-O Qe3 21. Qxe3 fxe3 22. Ng3 Nd7 {[#]} (22... f4 $11 23. Nf5 Kf7) 23. Kb1 (23. Rh5 $1 $16) 23... Nb6 {[#]} (23... f4 $1 $14 24. Nge4 Kf7) 24. Rh5 $1 $16 f4 25. Nf5 Kf7 (25... Bf6 $16) 26. Nxg7 $18 Kxg7 27. Rxe5 Nc4 28. Re7+ Rf7 29. Rxf7+ Kxf7 {[%mdl 4096] Endgame KRN-KRN} 30. d7 Rd8 31. Rd4 Nd2+ $2 (31... Ne5 32. Rxf4+ Kg6) 32. Kc2 Ke6 33. Ne2 Rxd7 34. Nxf4+ Ke7 35. Rxd7+ Kxd7 {KN-KN} 36. Kd3 Kd6 37. b3 Ke5 38. Kxe3 Nf1+ 39. Kf2 Nd2 40. Ne2 a5 41. Ke3 Nf1+ 42. Kd3 b5 43. Nd4 Kf4 44. Nxb5 Ne3 45. Nd6 Nxg2 46. Nc4 Ne1+ 47. Kc3 Nxf3 48. Nxa5 Ke5 49. Nc4+ Kd5 50. a4 Ng5 51. Ne3+ Ke4 52. Nc2 Kd5 53. Nb4+ Kc5 54. Nd3+ Kd5 55. Kb4 Ne6 56. a5 Kc6 57. Kc4 {White mates.} Nc7 58. b4 {[%cal Bb3b4,Bb4b5,Bb5b6,Bb6b7][%mdl 32]} Kb7 59. b5 Na8 60. Nc5+ Ka7 61. Kd5 Nc7+ 62. Kc6 Kb8 63. b6 Kc8 64. b7+ {Precision: White = 83%, Black = 43%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Fedorovsky, Michael"]
[Black "Sanal, Vahap"]
[Result "1/2-1/2"]
[ECO "E19"]
[WhiteElo "2467"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,59,35,15,18,0,0,0,6,-11,-8,-8,-9,-17,-8,-8,-12,-27,-21,-23,-11,-1,30,0,0,0,0,0,0,0,0,0,46,36,75,61,65,75,85,48,105,108,143,152]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 Be4 10. Rd1 f5 {E19: Queen's Indian: Old Main Line with 7...Ne4 8 Qc2 Nxc3 8 Qxc3} (10... d6 11. Qe3 d5 12. Ne5 Bxg2 13. Kxg2 c6 14. cxd5 cxd5 15. Bd2 Qd6 16. Rac1 f6 17. Nf3 Nc6 18. Rc2 Rac8 19. Rdc1 Rc7 20. Bb4 {1-0 (20) Radjabov,T (2696)-Indjic,A (2573) Novi Sad 2016}) 11. d5 $146 ({Predecessor:} 11. Be3 Bf6 12. Qd2 d6 13. Rac1 Nc6 14. Ng5 Bxg5 15. Bxg5 Ne7 16. Bxe4 fxe4 17. Qc2 e3 18. f3 {1-0 (63) Staniszewski,P (2419)-Strzemiecki,Z (2421) Poronin 2012}) 11... Bf6 12. Qa3 e5 {The position is equal.} 13. c5 bxc5 14. Qxc5 d6 15. Qc4 Nd7 16. Ne1 Nb6 17. Qc6 Bxg2 18. Nxg2 a5 19. Be3 g5 20. Rac1 (20. Bxb6 $5 cxb6 21. Rac1 $11) 20... f4 $1 {[%cal Rf4e3]} 21. Bxb6 cxb6 22. Qa4 b5 23. Qe4 Qd7 24. Rc6 Ra7 25. Rdc1 a4 26. Ne1 {[%cal Bg2e1,Be1d3,Bd3f2][%mdl 32]} Rb7 27. Nd3 Bd8 28. Kg2 Rf6 {[#]} (28... Bb6 $14) 29. f3 $1 $16 h5 30. Nf2 {Precision: White = 75%, Black = 57%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Hambleton, Aman"]
[Black "Sirosh, Ilja"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2461"]
[BlackElo "2299"]
[Annotator "TA"]
[PlyCount "113"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,113,26,17,33,32,35,29,29,29,29,29,22,33,56,48,66,50,53,48,82,71,85,61,107,93,100,105,97,109,107,52,125,86,85,68,56,40,49,45,57,0,42,43,135,154,130,156,271,268,312,310,375,347,366,372,356,252,234,135,134,144,129,137,113,124,193,197,199,195,193,183,196,195,331,268,316,219,386,359,438,420,366,366,537,510,391,293,760,788,555,493,1479,1636,12837,12837,12839,12835,12842,12842,12851,12851,12851,12851]} 1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 4. e3 Bg7 5. h4 c5 (5... c6 6. Nf3 Bg4 7. Be2 Nbd7 8. Ne5 Bxe2 9. Qxe2 h5 10. O-O-O Qa5 11. Kb1 {1-0 (44) Karjakin,S (2781)-Giri,A (2771) Stavanger 2017}) 6. Nb5 {A45: Trompowsky Attack} Na6 7. c3 {LiveBook: 5 Games} h6 8. Be2 {White is slightly better.} O-O 9. Nf3 Bg4 $146 ({Predecessor:} 9... Ne4 10. Ne5 Nd6 11. a4 {1-0 (47) Zhang,Z (2641)-Praggnanandhaa,R (2447) Dubai 2017}) 10. Ne5 Bxe2 11. Qxe2 Nd7 12. Nf3 h5 13. O-O Re8 14. Rfd1 cxd4 15. exd4 Nf6 16. Ne5 Ne4 17. a4 Rf8 18. Nf3 Qd7 19. Re1 Qf5 20. g3 Rfe8 21. Ng5 ({White should try} 21. Rad1 $16) 21... Nxg5 (21... e5 $1 $14 22. Bxe5 (22. Nxe4 exf4 23. Nbd6 Qe6 $11) 22... Bxe5) 22. Bxg5 Bf6 23. Bxf6 Qxf6 24. Qd2 Red8 25. Re5 e6 26. Qh6 ({White should play} 26. Rg5 $14) 26... Qg7 (26... Nc5 $5) 27. Qf4 Rd7 (27... Nb8 $1 $14) 28. g4 $1 $36 {[%mdl 2048] White has strong initiative.} hxg4 29. h5 f6 (29... Nb8 $16 {was called for.}) 30. Rxe6 $18 {Hoping for h6.} gxh5 31. Rxf6 Rf7 32. Rxf7 Qxf7 33. Qg5+ Kh7 34. Re1 {aiming for Re7.} Rg8 35. Re7 ({Better is} 35. Qe5 $18) 35... Rxg5 $16 36. Rxf7+ {[%mdl 4096] Endgame KRN-KRN} Rg7 37. Rf5 Kg6 38. Rxd5 Nc7 {[#]} (38... Re7 $16 {might work better.}) 39. Re5 $1 $18 Nxb5 40. axb5 {KR-KR} ({Weaker is} 40. Rxb5 Rh7 $14) 40... Rc7 41. Kg2 h4 {[#]} 42. f4 $1 h3+ (42... gxf3+ $142 43. Kxf3 h3) 43. Kh2 Kf6 44. Rg5 Re7 $2 (44... Rh7 45. b3 (45. Rxg4 Kf5 $18) 45... Rh4) 45. Rxg4 Re2+ 46. Kxh3 Rxb2 47. Rg5 Rb3 (47... b6 {is a better defense.} 48. Kg4 Rg2+ 49. Kf3 Rc2) 48. Rc5 b6 49. Rc7 Rxb5 $2 (49... Kf5 50. Kg3 (50. Rxa7 Rxc3+ 51. Kh4 Kxf4 $11) 50... Rxb5 51. Rxa7 Rb3) 50. Rxa7 {White is clearly winning.} Rb3 51. Rc7 Ke6 (51... Kf5 $142 52. Kg3 Ke6 53. Rc6+ Kd5) 52. Kg4 b5 53. Rc6+ Kd7 54. Rc5 b4 55. cxb4 Rxb4 56. Re5 Rxd4 57. Kg5 {Precision: White = 75%, Black = 31%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Baldauf, Marco"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2460"]
[BlackElo "2648"]
[Annotator "TA"]
[PlyCount "49"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 31,49,11,11,0,11,12,12,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Qc2 Bd6 7. Bd3 O-O 8. O-O dxc4 9. Bxc4 b5 10. Bd3 Bb7 11. a3 Rc8 12. b4 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} c5 13. bxc5 Bxf3 14. gxf3 Nxc5 15. dxc5 Rxc5 16. f4 Nd5 $1 {LiveBook: 9 Games. The position is equal.} 17. Bd2 Nxc3 18. Bxc3 Qc7 $1 19. Rfc1 Rc8 $1 {[%cal Rc5c3] [#]} 20. Bb4 $146 Rxc2 21. Rxc2 Qxc2 22. Bxc2 {[#] Black must now prevent Bd3.} Bxb4 23. axb4 Rxc2 24. Rxa7 {Intending Ra8+ and mate.} g5 25. Rb7 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Lugovskoy, Maxim"]
[Black "Ovsejevitsch, Sergei"]
[Result "1-0"]
[ECO "C49"]
[WhiteElo "2440"]
[BlackElo "2596"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,103,38,41,9,16,8,46,19,22,16,27,-18,4,0,44,25,36,34,48,58,113,-31,144,25,65,0,25,2,3,0,0,-86,-77,-166,-145,-152,-145,-250,-179,179,-278,-314,-296,-304,-262,-423,-358,-464,-445,-417,-344,-453,-426,-489,-426,-435,-458,-471,-498,-597,-587,-600,-595,-654,-656,-633,-208,-263,-8,-8,306,56,49,61,56,64,59,78,511,511,510,510,1041,1038]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 h6 9. Bh4 Bg4 10. h3 {C49: Four Knights: 4 Bb5 Bb4} Bh5 11. g4 Bg6 {LiveBook: 3 Games} 12. Rb1 $146 {White is slightly better.} ({Predecessor:} 12. Re1 Re8 13. Rb1 a6 14. Ba4 b5 15. Bb3 Na5 16. Re3 Nxb3 17. axb3 d5 18. exd5 Qxd5 19. Bxf6 gxf6 {1-0 (45) Grandelius,N (2643)-Rydstrom,T (2306) Uppsala 2016}) 12... Na5 13. Nd2 Bh7 14. Re1 c6 15. Ba4 Re8 16. Nb3 (16. Bb3 $5) 16... g5 17. Bg3 b5 18. Nxa5 Qxa5 19. Bb3 Qxc3 20. h4 Kf8 (20... Bg6 $14) 21. Re3 (21. Qc1 $16) 21... Bg8 $2 (21... Kg7 $15 {keeps the upper hand.}) 22. Rf3 ({White should play} 22. Qf3 $16 Ke7 23. d4 $1 {[%mdl 512]} Qxd4 24. Rd1) 22... Nh7 $11 ({But not} 22... Nxg4 $2 23. Rf5 $18) 23. hxg5 (23. d4 $14 Qxd4 24. Rd3) 23... hxg5 24. Kg2 {Black must now prevent Bxf7.} (24. d4 $5 Qxd4 25. Qxd4 exd4 26. Bxd6+ Kg7 27. e5 $14) 24... f6 25. Qh1 Kg7 26. Qh5 (26. Rc1 $11 {keeps the balance.}) 26... Bxb3 $17 27. cxb3 (27. axb3 $17 Qxc2 28. Rh1) 27... Rh8 $1 $19 28. Rh1 Rag8 $1 29. Rh3 (29. Re3 $17) 29... c5 ({And not} 29... Nf8 30. Qe8 $16) 30. Qh6+ (30. Bh2 $142) 30... Kf7 31. Qh5+ Ke7 32. Rh1 Qa5 33. Qh2 $2 (33. a4) 33... Qxa2 34. Rc1 Nf8 {[%cal Bh7f8,Bf8e6,Be6d4][%mdl 32]} 35. Qg1 Qa6 36. b4 Qc8 37. bxc5 dxc5 38. Rf5 {intending d4!} Ne6 39. Ra1 a6 40. Qc1 Rd8 41. Qa3 Nd4 42. Rc1 b4 43. Qa2 b3 $2 (43... Qc6 44. f3 Nxf5 45. gxf5 g4) 44. Qa3 Kf7 $2 (44... Rd6 $19 45. Rxc5 Qd7 46. Bxe5 Nxf5 47. Bxf6+ Kxf6 48. gxf5 Kg7) 45. Rxc5 $40 {[%mdl 128] White is up to no good.} Qb7 $2 {[%mdl 8192] [#]} (45... Qd7 $11 {and Black is okay.} 46. Rcxe5 Qb7) 46. Bxe5 $2 ({Only move:} 46. Rxf6+ $1 $18 {[%mdl 512]} Kxf6 47. Bxe5+ Kg6 48. Rc7 Qxc7 49. Bxc7) 46... Nxf5 $14 47. Rc7+ {[#]} Qxc7 $1 48. Qxb3+ (48. Bxc7 Nh4+) 48... Kg7 49. Bxc7 Nd4 $2 {[%mdl 8192]} (49... Nh4+ $16 {is more resistant.} 50. Kf1 Nf3) 50. Qb6 $18 {White is clearly winning.} Rd7 51. e5 Rf8 (51... Kh7 $142 52. exf6 Re8) 52. Bd6 {Precision: White = 29%, Black = 29%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Das, Sayantan"]
[Black "Kovchan, Alexander"]
[Result "0-1"]
[ECO "B96"]
[WhiteElo "2436"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,70,-9,-9,-17,-12,-17,-8,-15,-32,-20,-53,-38,-38,-33,-34,-29,-152,-145,-142,-151,-169,-147,-177,-78,-66,0,0,0,0,0,-468,-453,-468,-465,-565,-561,-551,-494,-490,-490,-937,-937,-941,-914,-2032,-1957,-1896,-1888]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 h6 8. Bh4 Qb6 9. Qd3 {B96: Sicilian Najdorf: 6 Bg5 e6 7 f4, lines other than 7...Qb6 and 7...Be7} (9. a3 Be7 10. Bf2 Qc7 11. Qf3 Nbd7 12. O-O-O b5 13. g4 Bb7 14. h4 d5 15. e5 Ne4 16. Rh3 Nxf2 17. Qxf2 {½-½ (43) Caruana,F (2817)-Vachier Lagrave,M (2803) Karlsruhe 2017}) 9... Qxb2 10. Rb1 Qa3 11. f5 Be7 12. fxe6 fxe6 {[%cal Bf7e6,Be6e5][%mdl 32]} 13. Be2 $1 {LiveBook: 10 Games} O-O 14. O-O Kh8 15. Kh1 {Threatens to win with e5!} e5 16. Nb3 $146 ({Predecessor:} 16. Nf5 Bxf5 17. Rxf5 {0-1 (55) Magrini,F (2198)-Roeder,M (2422) Bratto 2014}) 16... Nbd7 17. g4 g5 18. Nd5 $1 {[%cal Rd5e7]} Nxd5 19. exd5 {aiming for Qg6.} Kg7 {[%cal Bh8g7,Bg7f8,Bf8e8,Be8d7,Bd7c7,Bc7d8][%mdl 32]} (19... gxh4 $6 20. Qg6 $16) 20. Qe4 (20. Rxf8 $1 $11 Nxf8 21. Rf1) 20... Nf6 $17 (20... gxh4 21. Bd3 $16) 21. Rxf6 Rxf6 ({And not} 21... Kxf6 22. Bd3 Qc1+ 23. Rxc1 Bd8 24. Rf1+ Ke7 25. Qh7+ Ke8 26. Bg6+ Rf7 27. Qxf7#) 22. Bd3 Kf8 (22... gxh4 23. Qh7+ Kf8 24. g5 $1 $11 {[%mdl 512]}) ({Weaker is} 22... Qxa2 23. Ra1 $16) 23. Bg3 {[#]} b5 (23... Bd7 $1 $19 {has better winning chances. ...Ke8 is the strong threat.} 24. Qh7 Ke8) 24. Kg1 Qa4 (24... Qxa2 $2 25. Ra1 $17) (24... Ke8 $1 $15 25. Rf1 Qa4) 25. Qh7 $11 Ke8 ({Not} 25... Qxg4 $2 26. Bg6 $18) (25... Qxa2 $2 26. Ra1 $18) 26. h3 $1 {Black should prevent Rf1.} Bb7 (26... Bxg4 $5 27. hxg4 Qxg4 28. Qg8+ Rf8 29. Qg6+ Kd8 $19) 27. Qg8+ $2 {[%mdl 8192]} (27. c4 $1 $11 {and White has nothing to worry.} Rc8 28. Nd2) 27... Kd7 $19 {Black is clearly winning.} 28. Bf5+ Kc7 29. Qg7 Re8 30. Bg6 Kd8 31. Bxe8 Kxe8 32. Re1 (32. Bxe5 $142 dxe5 33. d6 Bxd6 34. Qxb7) 32... Qc4 33. Qg8+ Kd7 {Strongly threatening ...Qc3.} 34. Rd1 Qe2 35. Re1 Qf3 {Precision: White = 53%, Black = 64%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Gholami, Aryan"]
[Black "Brunello, Sabino"]
[Result "1/2-1/2"]
[ECO "B48"]
[WhiteElo "2434"]
[BlackElo "2566"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,72,0,58,40,47,-29,62,18,17,0,35,43,48,44,55,11,83,74,66,25,9,8,26,8,18,-113,-114,-118,-112,-114,-109,-107,-110,-214,-211,-224,-195,-174,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qf3 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2} Nxd4 8. Bxd4 Ne7 9. Qe3 b5 10. O-O-O Bb7 {LiveBook: 3 Games} (10... Rb8 $11) 11. f4 Rc8 {Strongly threatening ...b4.} 12. Be5 $146 (12. Rd2 $14) ({Predecessor:} 12. Bd3 Nc6 13. Bb6 Qb8 14. Kb1 Bb4 15. Ne2 {1-0 (52) Shirov,A (2705)-Kittlitz,M (2127) Hamburg 2005}) 12... Qc6 (12... d6 $1 $11 13. Bxd6 Nd5 14. exd5 Bxd6) 13. Bd3 Ng6 14. Bd4 Qc7 15. Rhf1 Bc5 16. g3 d6 17. f5 Bxd4 (17... Ne5 $11 {keeps the balance.}) 18. Qxd4 $16 Ne5 19. fxe6 fxe6 20. Be2 Ke7 21. Qd2 h6 22. Bxb5 (22. a3 $1 $11 {remains equal.}) 22... axb5 $17 23. Nxb5 Qc5 24. Nxd6 Rc7 25. b4 Qc6 26. c4 {[#]} (26. Rf2 $17 Rd7 27. Qf4 Rxd6 28. Qxe5 Rxd1+ 29. Kxd1 Qd6+ 30. Qxd6+ Kxd6 31. e5+ Kxe5 32. a4) 26... Ba6 $1 $19 {[%cal Ra6c4]} 27. c5 {Qc3 is the strong threat.} Bxf1 28. Qd4 {[#]} Nf7 $2 (28... Rf8 $1 $19 {[%cal Rf8f3] aiming for ...Rf3.} 29. Qxe5 Rf6 30. Nf5+ Kf7) 29. Rxf1 $11 {The position is equal.} Rf8 30. Kb2 $1 $36 {[%mdl 2048] White is more active.} ({Avoid the trap} 30. Qxg7 $2 Qxd6 31. Qf6+ Ke8 $19) 30... e5 31. Nf5+ Kf6 32. Qd1 Qa6 $1 33. Nh4+ $1 Ke7 {And now ...Rb8 would win.} 34. Nf5+ Kf6 {White must now prevent ...g6.} 35. Nh4+ $1 Ke7 {Hoping for ...Rb8.} 36. Nf5+ Kf6 {Precision: White = 39%, Black = 53%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Lanka, Zigurds"]
[Black "Stocek, Jiri"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2434"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,57,19,29,-8,8,-6,-2,-17,0,-23,-16,-9,10,8,4,12,24,-1,0,-24,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 c5 5. O-O e6 6. b3 Be7 7. Bb2 O-O 8. e3 d6 9. Nc3 Nbd7 10. Qe2 a6 11. Rad1 {[#] A30: Symmetrical English: Double Fianchetto and Hedgehog} b5 $1 {[%mdl 512]} 12. Ne1 $146 (12. cxb5 axb5) ({Predecessor:} 12. d3 b4 13. Na4 Nb6 14. Nxb6 Qxb6 15. e4 Nd7 16. d4 cxd4 17. Bxd4 Qc7 18. Ne1 Bc6 {½-½ (26) Jussupow,A (2610)-Hjartarson,J (2615) Linares 1989}) 12... Qb6 13. Ba1 d5 14. d3 {[%cal Bd2d3,Bd3c4][%mdl 32]} Rfd8 15. f4 dxc4 16. dxc4 Bxg2 17. Nxg2 b4 18. Nb1 Ne4 19. g4 {[%cal Bg3g4,Bg4g5][%mdl 32]} Bf6 20. Qf3 {The position is equal.} Bxa1 21. Qxe4 {[#] And now Rxd7! would win.} Nf6 {[%cal Bd7f6,Bf6e8,Be8d6,Bd6f5][%mdl 32]} 22. Qf3 Rxd1 23. Rxd1 Rd8 24. g5 Ne8 25. Ne1 g6 26. Qe2 Nd6 27. Nd3 (27. Nd2 $5 {[%cal Rd1a1]} Bg7 28. Ndf3 $11) 27... Nf5 {...Nxe3! is the strong threat.} 28. Nd2 Bg7 {Hoping for ...Nxe3!} 29. Nf3 {Precision: White = 51%, Black = 73%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Miezis, Normunds"]
[Black "Kunin, Vitaly"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2430"]
[BlackElo "2551"]
[Annotator "TA"]
[PlyCount "33"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,33,7,8,11,10,11,0,0,0]} 1. c4 e6 2. e4 d5 3. exd5 exd5 4. d4 dxc4 5. Bxc4 Bd6 6. Nf3 Nf6 7. O-O O-O 8. Nc3 Nc6 9. Bg5 h6 {D20: Queen's Gambit Accepted: 3 e3 and 3 e4} 10. Bh4 Bg4 11. h3 Bxf3 12. Qxf3 Nxd4 13. Qxb7 Rb8 14. Qxa7 {[#] LiveBook: 8 Games. With the idea Ne4.The position is equal.} Ra8 $146 15. Qb7 $1 (15. Qxd4 $2 Bh2+ 16. Kxh2 Qxd4 $19) 15... Rb8 16. Qa7 (16. Bxf6 $5 Qxf6 17. Qe4 $15) 16... Ra8 $1 {[%cal Ra8a7]} 17. Qb7 ({Wrong is} 17. Qxd4 $2 Bh2+ 18. Kxh2 Qxd4 $19) 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Mu, Ke"]
[Black "Ladva, Ottomar"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2411"]
[BlackElo "2532"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,51,11,88,28,39,0,0,0,7,-33,0,8,10,-15,45,38,45,45,45,37,56,47,44,29,36,37,33,35,30,38,25,31,30,31,37,33,42,26]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 a6 5. e3 dxc4 6. a4 b6 7. Bxc4 Bb7 8. O-O Nbd7 {[#]} (8... Nc6 $11 {remains equal.}) 9. Re1 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3} (9. e4 $1 $16) (9. e4 Nxe4 10. Nxe4 Bxe4 11. Ng5 Bg6 12. Qf3 Be7 13. Qc6 O-O 14. Nxe6 fxe6 15. Bxe6+ Kh8 16. Bxd7 Bd6 {½-½ (70) Inarkiev,E (2688)-Harikrishna,P (2705) Havana 2013}) 9... Bb4 $11 10. e4 (10. Qb3 $5 {[%cal Rb3b4]} Ba5 11. Be2 $11) 10... Bxc3 11. bxc3 {Threatening Qd3.The position is equal.} Nxe4 12. d5 $146 ({Predecessor:} 12. Ba3 Nd6 13. Bxe6 O-O 14. Bb3 Re8 15. Rxe8+ Qxe8 16. Ng5 h6 17. Bxd6 hxg5 {½-½ (112) Dautov,R (2603)-Van den Doel,E (2597) Halle 2010}) 12... Ndc5 {[%cal Re6d5]} 13. dxe6 $1 fxe6 {Hoping for ...Qxd1.} 14. Nd4 {Strongly threatening Qh5+.} O-O ({Avoid the trap} 14... Nxc3 $2 15. Qh5+ Kf8 16. Nxe6+ Nxe6 17. Bxe6 $18) ({Black should play} 14... Qh4 $11 15. Be3 O-O-O) 15. Nxe6 Nxe6 16. Bxe6+ Kh8 17. Qxd8 $1 Raxd8 18. Ba3 c5 19. f3 Nxc3 {[#]} 20. a5 $1 {[%mdl 512]} Nb5 (20... bxa5 21. Bxc5) 21. axb6 Nxa3 22. Rxa3 Rd6 23. Bc4 Rxb6 24. Ra5 Bc6 25. Rxc5 Bb5 26. Rb1 {Precision: White = 36%, Black = 80%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Kumsiashvili, Nikoloz"]
[Black "Zakhartsov, Viacheslav V"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "2403"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,99,52,50,64,62,70,62,79,34,32,-40,83,28,17,32,47,32,53,46,65,64,79,87,123,70,110,102,108,109,124,125,116,110,131,141,131,133,141,139,127,133,124,122,137,135,128,131,136,132,124,127,141,140,135,111,140,141,157,127,167,151,156,135,147,138,136,141,160,105,104,62,64,62,69,12,13,18,51,41,74,124,131,139,140,145,140,11,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 g6 6. Qc2 Bxf3 7. exf3 Bg7 {E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7} (7... Nc6 8. Be3 Bg7 9. O-O-O O-O 10. g4 d5 11. Kb1 Na5 12. cxd5 Nxd5 13. h4 Nxc3+ 14. Qxc3 c5 15. Qd3 cxd4 16. Bxd4 Bxd4 17. Qxd4 Qxd4 18. Rxd4 {0-1 (39) Grachev,B (2693)-Shirov,A (2709) Jurmala 2013}) 8. Bg5 h6 9. Bf4 $146 ({Predecessor:} 9. Be3 c6 10. d5 cxd5 11. cxd5 Nxd5 12. Nxd5 exd5 13. Rd1 O-O 14. Rxd5 Nc6 15. Bb5 {1-0 (46) Khenkin,I (2605)-Romanishin,O (2462) Hastings 2016}) 9... c6 {White is slightly better.} 10. d5 cxd5 11. Nb5 (11. cxd5 $14 Nxd5 12. Nxd5 exd5 13. Bd6) 11... Na6 (11... O-O $15 {keeps the upper hand.}) 12. Nd6+ (12. Bd6 $1 $16) 12... Kf8 $11 13. cxd5 Nc5 $1 ({Reject} 13... Nxd5 $6 14. Nb7 $16) 14. dxe6 dxe6 {Hoping for ...Nh5.} 15. O-O-O $1 $36 {[%mdl 2048] And now Nxf7! would win. White has good play.} Nd5 16. Bg3 $1 Qf6 17. Bb5 Nf4 18. Rd2 (18. b4 $16) 18... Nh5 19. Ne8 Rxe8 20. Bd6+ Kg8 21. Bxe8 Kh7 22. Bb5 Rc8 23. Kb1 Nf4 24. g3 $1 {[%cal Rg3f4]} Nd5 25. f4 $1 Qd8 {aiming for ...Nb7.} 26. Be5 Nd7 27. Qd3 Nxe5 28. fxe5 Bxe5 29. Bc4 {[%cal Rc4d5]} Rc5 30. Rhd1 Qc7 31. Bxd5 Rxd5 32. Qe2 Rxd2 33. Qxd2 $16 {[%mdl 4096] Endgame KQR-KQB} Qc5 34. Qc2 Qb5 35. Ka2 Bg7 36. Rd2 a5 37. Qb3 Qc6 38. Qd3 b5 39. Rc2 Qb7 {[#]} 40. Rc5 (40. h4 $142 $1) 40... b4 41. Rxa5 {a4 is the strong threat.} bxa3 $1 42. Qxa3 Qb6 $1 43. Ra4 (43. f4 $14) 43... Qxf2 $11 44. Rf4 Qxh2 45. Rxf7 {Threatening mate with Qc3.} Qd2 46. Qc3 {[%csl Gf7][%cal Rc3g7]} Qd5+ {[#]} 47. Ka3 $1 {[%csl Gf7][%cal Rc3g7]} Qa8+ 48. Kb3 {[%csl Gf7][%cal Rc3g7]} Qd5+ 49. Kc2 (49. Kb4 $16 {[%csl Gf7][%cal Rc3g7]} Qd6+ 50. Ka4 Qa6+ 51. Kb3 Qb5+ 52. Kc2 Qe2+ 53. Kc1) 49... Qe4+ 50. Qd3 {Precision: White = 47%, Black = 56%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Tomazini, Zan"]
[Black "Zeng, Chongsheng"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "2395"]
[BlackElo "2537"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,80,12,5,34,32,45,34,19,37,90,43,95,89,95,38,81,0,-3,-27,64,65,58,60,209,-166,-174,-272,-277,-274,-273,-275,-270,-265,-272,-262,-266,-281,-295,-295,-291,-666,-291,-282,-279,-464,-324,-312,-306,-730,-727,-682,-713,-712,-614,-652,-610,-1570,-1400,-1294,-832,-1275,-1245]} 1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 b6 7. Bd3 Ba6 8. O-O Bxd3 {B22: Sicilian: 2 c3} 9. Qxd3 Nc6 10. Nc3 Nxc3 11. bxc3 {LiveBook: 5 Games} Rc8 12. d5 $146 ({Predecessor:} 12. Bd2 d6 13. exd6 Qxd6 14. c4 Be7 15. d5 O-O 16. Qe4 {0-1 (33) Nemec,V (2172)-Kozul,Z (2617) Mali Losinj 2017}) 12... exd5 13. Qxd5 Be7 14. Rd1 Na5 (14... Qc7 $14) 15. Rd3 (15. Nd4 {seems wilder.} O-O 16. Nf5 Kh8 17. Bf4 Rxc3 18. Qxd7 Qxd7 19. Rxd7 Bb4 20. Bd2) 15... Rc5 (15... O-O $14) 16. Qe4 $1 $36 {[%mdl 2048] Black is under strong pressure.} Qc8 17. Bf4 ({Better is} 17. Qg4 $16 Rxc3 18. Rd1) 17... O-O 18. Nd4 (18. Rad1 $1 $16) 18... Re8 $11 {[%cal Bf8e8,Be8e6,Be6f6][%mdl 32]} 19. Nf5 {And now Nxg7! would win.} g6 (19... Qc6 $11 20. Qe2 Bf8) 20. Nh6+ $14 Kg7 21. Be3 {Black must now prevent Qf4.} Rxc3 (21... Nc6 $1 $14) 22. e6 $4 {[%mdl 8192]} (22. Rxc3 $18 {is the narrow road to win.} Qxc3 23. Rc1) 22... Bf6 $1 $19 23. Bd4 ({But not} 23. Rxd7 $2 Qxd7 $1 {[%mdl 512]} 24. Ng4 Qxe6 $19) (23. Rad1 {was called for.} Rxe6 24. Qd5 (24. Rxc3 $2 Qxc3 25. Qf4 Nc4 $19)) 23... Rxe6 24. Bxf6+ Rxf6 25. Ng4 {Strongly threatening Qe3.} Rc1+ 26. Rd1 {[#]} Rxa1 $1 ({Don't go for} 26... Qc2 $2 27. Qxc2 Rxc2 28. Nxf6 $16) 27. Rxa1 Qc3 28. Rf1 Re6 29. Qf4 h5 30. Qh6+ Kg8 31. Ne3 Nc4 32. Nd5 $2 (32. Nxc4 {was necessary.} Qxc4 33. a3) 32... Qd3 33. Qg5 Kg7 34. h4 $2 (34. Nc7 Re5 35. Qc1) 34... f6 {Black is clearly winning.} 35. Nxf6 Rxf6 36. Re1 Qd2 37. Re7+ Rf7 38. Rxf7+ Kxf7 39. Qd8 Qe1+ 40. Kh2 Qe8 {Precision: White = 45%, Black = 49%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Rakesh Kumar Jena"]
[Black "Berelowitsch, Alexander"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "2394"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "31"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,31,0,0,0]} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nf6 5. e5 Nfd7 6. c3 Nc6 7. Bd3 Qb6 8. O-O cxd4 9. cxd4 Nxd4 10. Nxd4 Qxd4 11. Nf3 Qb6 12. Qa4 Qb4 13. Qc2 $146 Qc5 14. Qa4 Qb4 15. Qc2 Qc5 16. Qa4 {C06: French Tarrasch: 3...Nf6 4 e5 Nfd7 5 Bd3 main lines} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Mandizha, Farai"]
[Black "Thybo, Jesper Sondergaard"]
[Result "1/2-1/2"]
[ECO "D86"]
[WhiteElo "2392"]
[BlackElo "2464"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,47,0,8,-15,0,0,0,0,0,-60,-48,-64,10,12,15,0,4,-86,0,0,94,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 O-O 9. O-O Nc6 10. Be3 b6 11. Qd2 {D87: Exchange Grünfeld: Classical Line: Variations without ...cxd4} (11. Rc1 Bb7 12. Qd2 e6 13. Rfd1 Qd7 14. h4 Rac8 15. h5 Na5 16. Bd3 f5 17. e5 c4 18. Bb1 Rfe8 {0-1 (40) Salem,A (2656)-Vachier Lagrave,M (2804) Doha 2016}) 11... Bb7 {LiveBook: 19 Games} 12. Bh6 Bxh6 13. Qxh6 cxd4 {[#] Threatens to win with ...Ne5.} 14. Rad1 $146 ({Find the theoretical novelty and annotate with similar games:} 14. f4 Qd6 15. e5 Qc5 16. Rf3 Bc8 17. Ng3 dxc3+ 18. Kh1 Qxc4 {½-½ (42) Williams,S (2515)-Melkumyan,H (2649) London 2012}) 14... Ne5 15. Rxd4 (15. Nxd4 $11 Qc8 16. Bb3) 15... Qc7 $15 16. Bd5 Rad8 (16... Ba6 $15 17. Qd2 Ng4 $1 {[%mdl 512]}) 17. Rfd1 $11 Ba6 18. Ng3 Qxc3 {...e6 is the strong threat.} 19. Qg5 (19. Nf5 $11 gxf5 20. exf5 Rxd5 21. Rxd5) 19... Nd3 (19... Nc6 $17 20. R4d2 e6 21. Bxc6 Rxd2 22. Qxd2 Qxc6) 20. Nf5 $1 {White wants to mate with Bxf7+!} ({Much worse is} 20. Qe3 e6 $17) 20... e6 {[#]} (20... Rde8 $1 $11 {remains equal.} 21. Nxe7+ Rxe7 22. R4xd3 Bxd3 23. Qxe7 Be2) 21. Qf6 ({White should play} 21. e5 $1 $16 {[%mdl 512] Threatening mate with Nh6+.} exf5 {[#]} (21... Nxe5 22. Ne7+) 22. Bxf7+ $1 {[%mdl 512]} Kxf7 23. Qf6+ Kg8 24. Rxd8 Rxd8 25. Qxd8+ Kg7 26. e6) 21... gxf5 {The position is equal.} 22. Qg5+ Kh8 23. Qf6+ Kg8 {Strongly threatening ...Nf4.} 24. Qg5+ 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "5"]
[White "Ozturk, Kubra"]
[Black "Schneider, Ilja"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "2298"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,41,6,30,30,37,35,37,37,35,31,34,34,31,23,29,29,32,31,31,22,22,23,34,-30,195,193,199,175,175,188,371,362,355,335]} 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bg5 Nc6 5. Nc3 Nf6 (5... f6 {is more complex.} 6. Bd2 e5 7. e4 dxe4 8. dxe5 fxe5 9. Bc4 Nf6) 6. Bxf6 {D10: Slav Defence: 3 cxd5 (without early Nf3) and 3 Nc3} gxf6 7. e3 e6 (7... a6 8. Rc1 Bf5 9. Bd3 Bg6 10. f4 f5 11. h4 h5 12. Nf3 e6 13. Na4 f6 {½-½ (39) Grischuk,A (2761)-Carlsen,M (2832) Paris 2017}) 8. Bd3 {White is slightly better.} f5 9. Nf3 Bd7 10. Qd2 $146 ({Find the theoretical novelty and annotate with similar games:} 10. Rc1 Rc8 11. a3 Bd6 12. O-O O-O 13. Na4 b6 {½-½ (40) Ivanisevic,I (2596)-Predojevic,B (2569) Zlatibor 2006}) 10... Rc8 11. Rc1 a6 12. O-O Bd6 13. Ne2 O-O 14. g3 Qa5 15. Nc3 {[%cal Be2c3,Bc3e4,Be4g5][%mdl 32]} Ne7 16. e4 (16. a3 $14) 16... fxe4 $2 (16... dxe4 $11 17. Nxe4 Qxd2 18. Nfxd2 fxe4 19. Nxe4 Rc6 20. Rxc6 Bxc6 21. Nxd6 Rd8) 17. Qg5+ $18 Ng6 {[#]} 18. Nxe4 $1 {[%mdl 512] Intending Nf6+ and mate.} Be7 {[#]} (18... dxe4 19. Qxa5) 19. Qh5 $1 Kg7 $2 (19... h6 {is a better defense.}) 20. Rxc8 Rxc8 21. Neg5 {Precision: White = 71%, Black = 43%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Shirov, Alexei"]
[Black "Goh, Wei Ming Kevin"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2648"]
[BlackElo "2446"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,85,0,0,-19,-10,-8,21,20,20,15,15,12,17,0,0,-6,0,0,0,0,0,0,0,0,31,31,30,33,27,27,27,27,26,28,35,36,24,14,47,40,88,96,146,8,8,10,22,0,0,0,0,0,0,0,0,-2,232,219,278,273,271,266,270,254,272,248,293,274,235,216,191,144]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 f6 7. b4 fxe5 {C02: French: Advance Variation} 8. bxc5 Qa5 {LiveBook: 4 Games} 9. Nxe5 Nxe5 {The position is equal.} 10. dxe5 Qc7 $146 ({Find the theoretical novelty and annotate with similar games:} 10... Bxc5 11. Bd3 Ne7 12. Qh5+ g6 13. Qe2 Rf8 14. O-O Bd7 15. Bg5 {½-½ (29) Mastrovasilis,D (2601)-Goh,W (2444) Baku 2016}) 11. Be3 Bd7 12. Bd3 Qxe5 13. O-O Nf6 14. Bd4 Qc7 15. c4 Bxc5 16. Bxf6 gxf6 17. cxd5 O-O-O 18. Nd2 {[#] Threatens to win with Ne4.} Kb8 19. Rc1 exd5 {Hoping for ...Qd6.} 20. Nb3 $1 {[%cal Rb3c5]} Ba4 $1 21. Rxc5 Bxb3 $1 22. Rxc7 Bxd1 23. Rf7 $36 {[%mdl 2048] White has the initiative.} Ba4 24. Rb1 Rd7 25. Rxf6 Rc7 26. h4 Rd8 27. Rh6 d4 28. Rb2 (28. Rxh7 Rxh7 29. Bxh7 d3 $17) 28... b6 29. Rxh7 (29. f3 $16) 29... Rc3 $1 $11 {[%cal Rc3d3]} 30. Be4 d3 $1 {[%cal Rd3d2]} 31. Rb7+ Kc8 {[#] Strongly threatening ...d2.} 32. Rxa7 Rd4 $1 {[%cal Rd4e4]} 33. Bf5+ Kb8 $1 {[%cal Rb8a7]} 34. Ra6 (34. Rxa4 $5 Rxa4 35. g4 $14) 34... Kc7 $1 35. h5 {[%cal Bh4h5,Bh5h6,Bh6h7][%mdl 32]} ({Of course not} 35. Raxb6 d2 $15) 35... Bb3 $2 (35... Bb5 $11 {and Black has nothing to worry.} 36. Ra7+ (36. Rxb5 $2 d2 $19) 36... Kb8) 36. Ra7+ $18 Kb8 37. Rd7 Rxd7 38. Bxd7 {KRB-KRB} Bc2 {Black wants to play ...Rc4.} 39. h6 {Black must now prevent h7.} d2 40. Bg4 Rc4 41. Bf3 ({Resist} 41. Rxb6+ $6 Ka7 $18) 41... d1=Q+ 42. Bxd1 Bxd1 43. h7 {Precision: White = 63%, Black = 58%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Smirin, Ilia"]
[Black "Ali Marandi, Cemil Can"]
[Result "1-0"]
[ECO "C76"]
[WhiteElo "2634"]
[BlackElo "2526"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,119,53,0,5,0,0,-19,19,8,0,-8,0,-1,-18,0,28,0,0,6,54,57,60,47,97,102,82,97,176,135,238,149,115,133,395,211,574,573,541,65,227,32,74,77,72,70,75,0,0,0,525,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,62,0,0,0,63,54,57,0,0,0,72,72,69,79,333,0,0,0,0,0,0,0,45,64,12844,12844,12845,12845,12845,12846,12846,12847,12847,12847]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 g6 5. c3 d6 6. d4 Bd7 7. O-O Bg7 8. Re1 Nf6 9. Nbd2 {C79: Ruy Lopez: Steinitz-type lines with 3...a6 4 Ba4 Nf6 5 0-0 d6} (9. h3 b5 10. Bc2 O-O 11. Nbd2 Re8 12. a3 h6 13. Nf1 Nh5 14. Be3 Kh7 15. Qd2 Qf6 16. N1h2 Rad8 {1-0 (68) Dominguez Perez,L (2739)-Van Foreest,J (2612) chess.com INT 2017}) 9... O-O 10. Nf1 {LiveBook: 6 Games} exd4 11. cxd4 {The position is equal.} Re8 12. Ng3 b5 13. Bb3 $146 {And now Ng5 would win.} ({Predecessor:} 13. Bc2 Bg4 14. Be3 Nd7 15. Qd2 Nb6 16. b3 Bxf3 17. gxf3 {½-½ (46) Kazoks,A (2361)-Salmi,I (2468) ICCF email 2014}) 13... Bg4 14. a4 Bxf3 15. gxf3 {[%cal Bg2f3,Bf3f4][%mdl 32]} Na5 16. Ba2 b4 17. f4 Nd7 18. e5 dxe5 19. dxe5 Nc5 20. Be3 Ne6 21. Bxe6 Rxe6 22. Rc1 f6 (22... Qxd1 $16 23. Rexd1 (23. Rcxd1 Nc4 $11) 23... Rc8) 23. Qf3 $36 {[%mdl 2048] Keeping Black busy.} fxe5 (23... c6 $16) 24. Red1 Qe8 25. Rxc7 exf4 $2 {[%mdl 8192]} (25... Rc8 $16 26. Rxc8 Qxc8) 26. Bxf4 (26. Rdd7 $142 Be5 27. Bd4 $1 {[%mdl 512]}) 26... Rd8 $2 (26... Rc8) 27. Rxd8 $1 $18 Qxd8 {[#]} 28. Ne4 $2 (28. Be5 $1 $18 {[%mdl 512]} Re7 (28... Rxe5 29. Qf7+) 29. Rxe7 Qxe7 30. Qd5+ Qf7 31. Qxa5) 28... h6 $2 (28... Re7 $14 29. Rxe7 Qxe7) 29. Nc5 $2 (29. Be5 $18 {White threatens Qf7+ and mate.} Re7 30. Nf6+ (30. Rxe7 Qxe7 31. Bxg7 Kxg7 $14) 30... Kh8 31. Rxe7 Qxe7 32. Qa8+ Qf8 33. Qxa6) 29... Re7 $1 $14 30. Rxe7 Qxe7 31. Qd5+ Qf7 $1 {[%cal Rf7d5]} 32. Ne6 (32. Qxf7+ $1 $16 Kxf7 33. Bc7 (33. Nxa6 b3 $11)) 32... Bxb2 $11 33. Bxh6 Bf6 $2 {[%mdl 8192]} (33... Qf5 $11 34. Qd7 Qg4+ 35. Kh1 Qe4+ 36. Kg1 Qg4+ 37. Kh1 Qe4+ 38. Kg1 Qg4+) 34. Bg5 $2 (34. Qxa5 Qxe6 35. Qxb4 g5 $11) (34. Qa8+ $1 $18 Kh7 35. Bg7 $1 {[%mdl 512]}) 34... b3 {aiming for ...b2.} 35. Bxf6 Qxf6 36. Ng5+ Kh8 37. Ne4 Qf5 38. Qd8+ Kg7 $1 39. Qe7+ Kh6 40. Qh4+ Kg7 41. Qe7+ Kh6 42. Ng3 Qb1+ 43. Kg2 Qd1 ({Black should try} 43... Qd3 $11) 44. Qf8+ (44. h4 $1 $14) 44... Kh7 45. Qf7+ Kh6 ({Better is} 45... Kh8 $11) 46. h4 $1 $14 {[%cal Rh4h5]} b2 {...Qd4 is the strong threat.} 47. Qf8+ (47. Qf6 $1 $14 Qd5+ 48. Kh2) 47... Kh7 $11 48. Qf7+ Kh8 (48... Kh6 $11 49. Qf6 Qd5+ 50. Kh2 Kh7 51. Qxb2 Nb3) 49. Qf6+ $16 Kh7 50. Qxb2 {Hoping for Qe5.} Qxa4 $2 {[%mdl 8192]} (50... Qd5+ $16 51. Kh3 Qe6+ 52. Kh2 Nc4) 51. h5 $2 ({Only move:} 51. Qe5 $18 Qb5 52. Qe7+ Kh6 53. Qf8+ Kh7 54. Ne4) 51... Qc6+ $11 52. Kh2 {Black must now prevent Qe5.} (52. Kg1 $5 {[%cal Rb2e5]} Qe6 53. hxg6+ Qxg6 54. Qa3 $16) 52... gxh5 53. Qe5 (53. Nxh5 $5 {[%cal Rb2g7]} Qd6+ 54. Ng3 $14) 53... Nc4 54. Qe7+ Kg8 55. Ne4 {Strongly threatening Nf6+.} Qh6 $2 {[%mdl 8192]} (55... Kh8 $14) 56. Nf6+ {White is clearly winning.} ({Not} 56. Qe8+ Kh7 $14) 56... Kh8 {[#]} 57. Kh3 $1 {Qf7 would kill now.} Nd6 58. Qxd6 {Threatening mate with Qe7.} Kg7 59. Ne8+ Kh7 60. Qe7+ {Precision: White = 49%, Black = 30%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Jumabayev, Rinat"]
[Black "Ochsner, Bjorn Moller"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2610"]
[BlackElo "2443"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,77,7,11,4,43,38,54,50,48,35,62,59,54,55,79,53,85,90,172,202,218,0,5,-155,-152,-212,-208,-189,-195,-200,-204,-198,-189,-276,-16,-18,0,-275,-268,-273,-258,-267,-249,-265,-263,-360,-371,-395,-368,-520,-524,-518,-525,-526,-447,-522,0,-522,0,-516,-500,-507,-515,-481,-488,-473,-473,-477,-466,-468]} 1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. c3 Qb6 5. Qb3 c4 6. Qc2 {D00: 1 d4 d5: Unusual lines} Nc6 7. Nd2 Nh5 8. Bg5 {[%cal Bf4g5,Bg5h4,Bh4g3][%mdl 32] White is slightly better.} h6 9. Bh4 $1 g5 10. Be2 Ng7 11. Bg3 Bf5 12. e4 (12. Qc1 e6 {1-0 (41) Carlsen,M (2832)-So,W (2812) Leuven 2017}) 12... Bh7 13. h4 $146 f5 (13... e5 $16) 14. exd5 $18 f4 {[#]} 15. Qc1 $2 ({But not} 15. Nxc4 $6 Bxc2 16. Nxb6 axb6 $14) (15. Qd1 $1 $18) 15... Nxd4 $1 $11 {[%cal Bc6d4,Bd4e2,Be2c1,Bc1d3][%mdl 32]} 16. Nxc4 $2 (16. cxd4 $11 fxg3 17. fxg3 (17. Qxc4 Nf5 $11)) 16... Nxe2 $17 17. Nxb6 (17. Nxe2 $17 Qb5 18. Bxf4 Qxc4 19. hxg5) 17... Nxc1 $19 18. Nxa8 Nd3+ 19. Ke2 fxg3 20. hxg5 Nxf2 21. Rxh6 (21. Nc7+ $142 Kd7 22. Rxh6) 21... Nf5 $2 (21... Bd3+ $19 22. Kf3 Rxh6 23. Nc7+ Kf7 24. gxh6 Nh5) 22. Rh5 $11 {[#] Threatens to win with g6!} Ng7 $2 {[%mdl 8192]} (22... Bg7 $11 23. Nc7+ Kf7) 23. Rh6 $19 {Strongly threatening g6.} Bd3+ 24. Kf3 Rxh6 25. gxh6 Nh5 26. Re1 Kd7 27. Re5 Nf6 28. Kxg3 N2e4+ 29. Kh3 (29. Kh4 $142 Bxh6 30. Nf3) 29... Bxh6 30. Nf3 Bf4 31. Kh4 Bg3+ 32. Kh3 Bf4 33. Kh4 Bg3+ 34. Kh3 Bc4 {Black is clearly winning.} 35. Rf5 Bxd5 36. Ng5 {and the idea Rxd5+! leaves White hopeful.} Bd6 37. Nxe4 Bxe4 38. Ra5 Bb8 39. g4 {Precision: White = 60%, Black = 54%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Onischuk, Vladimir"]
[Black "Nabaty, Tamir"]
[Result "1-0"]
[ECO "B18"]
[WhiteElo "2610"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,79,16,13,0,10,60,63,64,58,54,49,52,47,59,69,69,68,51,62,143,142,129,50,52,62,83,63,111,107,165,175,165,159,162,154,356,217,214,196,443,412,774,696,638,486,1237,823,834,817,5421,5414,5406,5381,1532,1079,29994,29995]} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. c3 e6 7. Nh3 Bd6 8. Nf4 Nf6 9. h4 {B18: Classical Caro-Kann: 4...Bf5 sidelines} Qc7 (9... Bxf4 10. Bxf4 h6 11. h5 Bh7 12. Bc4 Nbd7 13. Qe2 O-O 14. O-O Re8 15. Rfe1 Nd5 16. Bd2 Qh4 {½-½ (45) Ponomariov,R (2706)-Grischuk,A (2747) Almaty 2016}) 10. Qf3 Nbd7 11. h5 Bc2 12. h6 g6 13. Bd3 {LiveBook: 18 Games} Bxd3 14. Nxd3 O-O 15. O-O Qa5 16. c4 {[#]} Bxg3 $146 ({Predecessor:} 16... Rfe8) 17. Qxg3 Qf5 18. Re1 a5 19. Ne5 Rfd8 20. Qh4 Ne8 21. Qe7 Nxe5 (21... Qf6 $1 $14 22. Qa3 Qf5) 22. dxe5 $16 Qd3 23. Qxb7 (23. Bg5 $16) 23... Qxc4 $14 24. Bg5 $36 {[%mdl 2048] White is more active.} Rdb8 25. Qd7 Qg4 26. Be3 Qh5 (26... Qb4 $16) 27. Rad1 $18 {[#] Qe7 is the strong threat.} ({Worse is} 27. Qxc6 Qxe5 28. b3 Qb5 $11) 27... Rc8 28. Qe7 {Black must now prevent Rd7.} Rc7 29. Qc5 f5 $2 (29... Qh4 $16 30. Rd4 Qe7) 30. Rd3 Qh4 31. Red1 f4 $2 (31... Qb4 32. b3 Rac8) 32. Qc4 Rf7 (32... Qg4 $142 33. f3 (33. Qxf4 Qxf4 34. Bxf4 c5 $18) 33... Qf5) 33. Rd7 Qg4 34. R1d4 {And now Rxf7 would win.} g5 (34... Rxd7 $142 35. Rxd7 Rc8 36. Bxf4 Rc7) 35. Rxf7 Kxf7 {[#]} 36. Bxf4 $1 {[%mdl 512]} c5 (36... gxf4 37. Rxf4+) 37. Rd7+ Kf8 38. Qxc5+ Kg8 39. Qc2 Kf8 40. Qxh7 {Precision: White = 81%, Black = 33%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Tregubov, Pavel V"]
[Black "Gholami, Aryan"]
[Result "1/2-1/2"]
[ECO "E17"]
[WhiteElo "2593"]
[BlackElo "2434"]
[Annotator "TA"]
[PlyCount "38"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,38,9,20,9,19,0,35,37,50,31,37,34,39,53,43,29,31,33,65,56,47]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Re1 d5 8. cxd5 exd5 9. Nc3 c5 10. Bf4 Na6 {LiveBook: 234 Games} 11. Qb3 {E17: Queen's Indian: 4 g3 Bb7 5 Bg2 Be7} (11. dxc5 bxc5 12. Qb3 Qc8 13. Ne5 Rd8 14. Bh3 Qxh3 15. Qxb7 Bd6 16. Qxf7+ Kh8 17. Nxd5 Bxe5 18. Bxe5 Rf8 19. Qb7 {1-0 (32) Yu,Y (2724)-Sargissian,G (2668) Tsaghkadzor 2015}) 11... Ne4 $146 ({Predecessor:} 11... Qc8 12. Rad1 h6 13. Be5 Rd8 14. Nd2 cxd4 15. Bxd4 Nc5 16. Qc2 Ne6 17. Nb3 Ne4 18. Qc1 Bb4 {0-1 (38) Sonis,F (2241)-Hjartarson,J (2535) Porto Mannu 2015}) 12. Rad1 Bf6 13. Be5 cxd4 14. Bxd4 Bxd4 15. Nxd4 {And now Nxe4 would win.} Nac5 16. Qa3 {aiming for Bxe4.} Qf6 17. Nxe4 dxe4 18. b4 Ne6 19. Nxe6 $1 Qxe6 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Kovchan, Alexander"]
[Black "Blomqvist, Erik"]
[Result "1-0"]
[ECO "B56"]
[WhiteElo "2587"]
[BlackElo "2525"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 34,65,14,16,34,29,29,0,44,41,28,40,75,75,75,75,85,50,48,12,20,11,57,83,81,89,78,79,80,79,87,88,100,66]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. f3 e5 7. Nb3 Be7 8. Be3 O-O 9. Qd2 a5 10. Bb5 Na7 11. Be2 Nc6 12. Bb5 Na7 13. Bd3 Nc6 {B56: Classical Sicilian: Unusual Lines} 14. a3 a4 15. Nc1 {[%cal Bb3c1,Bc1e2,Be2c3][%mdl 32]} Be6 16. N1e2 d5 17. exd5 Nxd5 18. Nxd5 {LiveBook: 20 Games} Qxd5 19. Nc3 Qa5 20. Qf2 {[#]} Nd4 $1 {[%mdl 512]} 21. O-O {[#]} (21. Bxd4 exd4) 21... Rad8 $146 22. Kh1 f5 23. f4 Bf6 24. fxe5 Bxe5 25. Rae1 f4 26. Bd2 {[#] Nb5 is the strong threat.} (26. Bxd4 $5 Bxd4 27. Qh4 $14) 26... Qc7 $1 27. Qh4 $1 Bf5 (27... h6 {with more complications.} 28. Qh5 Bf5 29. Nb5 Qb8 30. Bc4+ Kh7) 28. Bxf4 Bxf4 {White is better.} 29. Rxf4 Bxd3 30. Rxf8+ Rxf8 31. cxd3 Nc2 32. Rc1 {Strongly threatening Ne2.} Qb6 33. Nxa4 {Precision: White = 76%, Black = 55%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Stocek, Jiri"]
[Black "Rakotomaharo, Fy Antenaina"]
[Result "1/2-1/2"]
[ECO "E21"]
[WhiteElo "2583"]
[BlackElo "2431"]
[Annotator "TA"]
[PlyCount "23"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,23,1,7,60,43,58,14,59,60,77,60,82,46]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 O-O 5. Qc2 c5 6. dxc5 Na6 7. g3 {LiveBook: 532 Games} Bxc5 {E39: Nimzo-Indian: Classical: 4...c5 5 dxc5 0-0} (7... Bxc3+ $11 8. Qxc3 Nxc5) (7... Nxc5 8. Bg2 b6 9. O-O Bb7 10. Nb5 Be4 11. Qd1 Nb7 12. Bf4 a6 13. Nd6 Bxd6 14. Bxd6 Nxd6 15. Qxd6 Qb8 16. Rfd1 Qb7 {½-½ (71) Akobian,V (2661)-Bruzon Batista,L (2652) Saint Louis 2017}) 8. Bg2 d5 9. O-O Bd7 $146 ({Predecessor:} 9... dxc4 10. Ne5 Nb4 11. Qa4 {0-1 (11) Lorparizangeneh,S (2277)-Shyam,N (2469) Abu Dhabi 2014}) 10. Bg5 Rc8 11. Rad1 Be7 12. cxd5 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Braun, Arik"]
[Black "Tang, Andrew"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "2577"]
[BlackElo "2475"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,96,20,27,20,25,5,19,15,24,15,15,15,17,17,17,16,18,-28,-27,-30,-28,-29,-22,-38,-44,-39,-16,-28,-18,-33,-1,-3,-17,-14,-12,-64,-45,-56,-48,-52,-63,-40,-23,-35,14,-31,-44,-93,-12,-12,-15,-12,-8,-68,-12,-15,-19,-163,-112,-115,-112,-255,-253,-235,-245,-281,-254,-590,-199,-169,-172,-281,-277,-29976,-29977,-29983,-29984,-29984,-29985,-29985,-29986,-29985,0,-29980,-29981,-29981,-29982,-29998,-29999]} 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. cxd5 exd5 5. Bf4 c6 6. Qc2 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6} (6. e3 Bf5 7. Bd3 Bxd3 8. Qxd3 Nf6 9. Nge2 Nbd7 10. h3 O-O 11. O-O Re8 12. f3 b5 13. a3 a5 14. e4 Nb6 {1-0 (35) Mamedyarov,S (2800)-Topalov,V (2749) Paris 2017}) 6... Nf6 7. h3 Qa5 8. Nf3 {The position is equal.} Ne4 9. Nd2 Nxd2 10. Qxd2 O-O 11. e3 Bf5 $146 ({Find the theoretical novelty and annotate with similar games:} 11... Be6 12. Bd3 c5 13. dxc5 Nc6 {1-0 (65) Lupulescu,C (2616)-Goganov,A (2517) Plovdiv 2012}) 12. g4 Be6 13. O-O-O b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 14. Kb1 b4 15. Ne2 {[%cal Bc3e2,Be2c1,Bc1d3,Bd3e5][%mdl 32]} Nd7 16. Nc1 Qb6 17. Nd3 a5 {[%cal Ba7a5,Ba5a4,Ba4a3][%mdl 32]} 18. Rc1 Rfc8 19. Ne5 Nf6 20. f3 a4 21. Nd3 Nd7 22. h4 (22. Be2 $1 $11) 22... c5 $15 23. dxc5 Nxc5 24. Nxc5 (24. Qxb4 $2 Nxd3 $1 {[%mdl 512]} 25. Bxd3 Qxb4 $19) 24... Bxc5 25. Bd3 a3 {Hoping for ...b3.} 26. b3 d4 {aiming for ...Bxb3!} 27. exd4 (27. e4 {is interesting.} Bd6 28. e5 Be7 29. Be4 Rab8 30. Rxc8+ Rxc8 31. Rd1) 27... Bxd4 28. Be4 Bb2 (28... Bc3 $17 29. Qe3 Qxe3 30. Bxe3 Ra5) 29. Bxa8 $11 Bxc1 30. Rxc1 Rxa8 31. Rd1 {[#]} (31. Qe3 $11 Qb5 32. Qd4) 31... h5 ({Black should try} 31... Bxb3 $1 $15 {[%mdl 512]} 32. axb3 a2+ 33. Ka1 Qf6+ 34. Qb2 (34. Qd4 $2 Rd8 $19) 34... Qxf4) 32. Be5 $1 {And now Qg5 would win.} f6 $36 {[%mdl 2048] Black has some pressure.} 33. Bd4 (33. Qd6 $11 {and White stays safe.} Qxd6 34. Bxd6) 33... Qb5 (33... Qc6 $19 34. g5 Qxf3 35. gxf6 Rd8) 34. gxh5 $17 Qxh5 35. Qe3 (35. Rg1 $17) 35... Re8 $1 $19 {( -> ...Bf5+)} 36. Ka1 Bd5 ({Don't take} 36... Qxh4 37. Qd2 $17) 37. Qd2 Bxf3 38. Rg1 $2 (38. Rc1) 38... Qxh4 $2 (38... Qd5 39. Qf4 Bg2) 39. Qxb4 {[#]} Re2 $1 40. Qc3 {[#]} (40. Qc4+ $142 Kh7 41. Qd3+ Qe4 42. Qc3) 40... Bg4 $1 41. b4 $2 (41. Qb4 $19) 41... Be6 42. Bxf6 Rxa2+ 43. Kb1 Qe4+ 44. Kc1 Qf4+ 45. Kb1 Qe4+ 46. Kc1 {[#]} Ra1+ $1 {[%mdl 512] Black mates.} 47. Qxa1 Qe3+ 48. Kc2 Bb3+ {Precision: White = 38%, Black = 56%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Alekseenko, Kirill"]
[Black "Miezis, Normunds"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2575"]
[BlackElo "2430"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,79,0,-2,26,13,4,5,22,4,22,20,24,6,16,22,41,12,14,14,26,14,13,0,22,16,7,0,0,0,0,-13,0,-7,36,30,50,0,0,0,0,0,32,32,70,29,49,8,72,29,27,17,33,44,70,61,68,56,442,425,402,409,870,860,836,831,744,381,383,368,1299,1270]} 1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Na6 5. e3 c6 {[%cal Bc7c6,Bc6c5][%mdl 32]} 6. Nc3 {LiveBook: 43 Games. D00: 1 d4 d5: Unusual lines} Bd6 (6... Bb4 7. Nge2 O-O 8. a3 Bd6 9. Ng3 Nc7 10. Bd3 Re8 11. Bxd6 Qxd6 {0-1 (42) Rapport,R (2717)-Wei,Y (2707) Yancheng 2016}) 7. Nf3 $146 ({Predecessor:} 7. Bxa6 bxa6 8. Nge2 c5 9. Na4 Bxf4 10. Nxf4 Ne4 11. Nxc5 Nxc5 12. dxc5 {1-0 (29) Lizak,P (2445)-Juenger,H (2110) Austria 2016}) 7... Bxf4 8. exf4 {The position is equal.} Qa5 9. Bd3 c5 10. O-O O-O 11. a3 cxd4 12. Nb5 Qb6 13. b4 Bd7 14. Nbxd4 Rac8 15. Re1 Nc7 16. Qd2 Nce8 17. Ne5 Nd6 18. Qe3 Ba4 19. c3 {[%cal Bc2c3,Bc3d4][%mdl 32]} Rfd8 20. Rac1 Be8 (20... Nfe4 $5) 21. Bb1 Nb5 (21... Nfe4 {is more complex.} 22. g4 Rc7 23. Bxe4 dxe4 24. f5 exf5 25. gxf5 Nb5) 22. f5 Nxd4 23. cxd4 Rxc1 24. Rxc1 exf5 25. Bxf5 g6 (25... Ne4 $5) 26. Bd3 Kg7 27. h3 {[%cal Bh2h3,Bh3h4][%mdl 32]} Qd6 28. Qd2 Bd7 (28... Ne4 $11 {remains equal.} 29. Qe3 f6) 29. Qf4 {Nxg6 is the strong threat.} (29. Qh6+ $5 Kg8 30. Qf4 $16) 29... Be6 30. g4 $36 {[%cal Bg2g4,Bg4g5][%mdl 2080] White is pushing.} Ne8 31. g5 Qe7 32. h4 $1 Rc8 33. Re1 Nd6 $2 {[%mdl 8192]} (33... Rc3 $14) 34. Ng4 $18 {[%cal Be5g4,Bg4f6,Bf6d5,Bd5f4][%mdl 32] [#] Intending Qe5+ and mate.} Kf8 35. Qe5 {[%cal Re5h8]} Ke8 (35... Qd8 $142 36. h5 (36. Qh8+ Ke7 $16) 36... Ne8 37. Qh8+ Ke7) 36. Nf6+ Kd8 37. Nxd5 Qf8 38. Nf4 Kc7 39. Qf6 ({Don't take} 39. Nxe6+ fxe6 40. Rc1+ Kb8 $18) ({Weaker is} 39. d5 Bd7 $18) 39... Re8 $2 {[#]} (39... Kb8 40. Nxe6 fxe6 41. Rxe6 Qxf6 42. gxf6 Rd8) 40. Rxe6 {Precision: White = 41%, Black = 25%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Brunello, Sabino"]
[Black "Laurusas, Tomas"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "2566"]
[BlackElo "2409"]
[Annotator "TA"]
[PlyCount "25"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,25,-39,-41,-41,10,-23,2,-36,-31,-34,-31,-60]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nbd2 e6 6. Nh4 {D12: Slav Defence: 3 Nf3 Nf6 4 e3 Bf5} Be4 7. f3 Bg6 8. Qb3 (8. g3 Be7 9. a3 Nbd7 10. cxd5 cxd5 11. Nxg6 hxg6 12. Bd3 e5 {0-1 (67) Nakamura,H (2787)-Caruana,F (2801) Saint Louis 2014}) 8... Qc7 {LiveBook: 5 Games} 9. Be2 Bd6 (9... c5 $15) 10. g3 $146 ({Find the theoretical novelty and annotate with similar games:} 10. Nf1 Nbd7 11. cxd5 exd5 12. Bd2 O-O 13. Nxg6 hxg6 14. O-O-O c5 {½-½ (16) Unzicker,F (2330)-Seibold,H (2180) Nuremberg 2010}) 10... Nbd7 11. c5 Be7 12. Qc3 a5 13. b3 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Kunin, Vitaly"]
[Black "Bruedigam, Martin"]
[Result "1/2-1/2"]
[ECO "E19"]
[WhiteElo "2551"]
[BlackElo "2408"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,119,13,12,17,14,27,-18,-10,-55,12,-6,0,-34,-29,-43,0,2,-5,-40,0,-18,-5,-9,7,-63,-60,-63,-70,-75,-65,-77,-70,-162,-157,-199,-50,-43,-41,-37,-24,-39,-39,-50,-46,-49,-23,-35,-6,-19,-12,-11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-35,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-15,-15,-31,-35,-91,-91,-113,0,-59,0,-108]} 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 Be7 6. d4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 c5 10. Bf4 d6 {E19: Queen's Indian: Old Main Line with 7...Ne4 8 Qc2 Nxc3 8 Qxc3} 11. Rad1 Qc7 12. Rd2 $146 ({Predecessor:} 12. d5 exd5 13. cxd5 Bf6 14. Qc2 Qe7 15. Nd2 Nd7 16. Ne4 Be5 17. Bg5 f6 18. Bc1 {1-0 (40) Volkov,S (2575)-Predke,A (2496) Kazan 2012}) 12... Nd7 13. Qc2 Rad8 ({Black should play} 13... Nf6 $15 14. dxc5 bxc5) 14. dxc5 bxc5 15. Ne1 (15. Ng5 $5 {[%cal Rc2h7]} Nf6 16. Ne4 $11) 15... Rb8 16. b3 Rfd8 17. Bxb7 Rxb7 18. Qe4 Rb6 {[%cal Bb7b6,Bb6a6,Ba6a4][%mdl 32]} 19. Nc2 Nf6 20. Qg2 Qb7 21. f3 ({White should try} 21. Qxb7 $11 Rxb7 22. f3) 21... Ra6 22. Ne1 d5 23. Nd3 dxc4 24. bxc4 Ra4 $1 25. Be3 (25. e4 $15) 25... Rxc4 $19 26. Nxc5 {[#]} Qc8 ({Better is} 26... Qb6 $1 $19 27. Rxd8+ Bxd8) 27. Nd3 $1 $15 a6 28. Bb6 Rd7 29. e4 Bd8 30. Qf2 Bxb6 31. Qxb6 Rcd4 32. Rfd1 h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 33. Qa5 g6 34. Kg2 h4 (34... Qc7 {seems wilder.} 35. Qxc7 Rxc7 36. h4 Kf8 37. Kf2 Rdc4) 35. Ne5 (35. Nf2 {is interesting.} Rxd2 36. Rxd2 hxg3 37. hxg3 Kg7 38. g4) 35... Rxd2+ 36. Rxd2 Rxd2+ 37. Qxd2 hxg3 38. hxg3 Qc7 39. Qb2 {With the idea Nxg6!} Nh5 {Hoping for ...f6.} 40. f4 Nf6 41. Kf3 Qd6 42. Qe2 (42. Qb3 {feels hotter.} Qd2 43. Qb7 Qd1+ 44. Kg2 Qe2+ 45. Kg1) 42... Qd4 43. Qd3 Qa4 44. a3 Kg7 45. g4 {[%cal Bg3g4,Bg4g5][%mdl 32]} Qa5 46. g5 Nh5 {White must now prevent ...Qe1.} 47. Ng4 Qe1 {( -> ...Qg3+)} 48. Qd4+ Kh7 49. Nf6+ Nxf6 50. Qxf6 $11 {[%mdl 4096] Endgame KQ-KQ} Qd1+ 51. Ke3 Qb3+ 52. Kd4 Qb2+ 53. Kc4 Qb5+ 54. Kc3 Qc5+ 55. Kd2 (55. Kb3 $5 {[%cal Rf6f7]} Qb5+ 56. Kc3 Qc5+ 57. Kb2 Qb6+ 58. Kc2 $11) 55... Qd6+ 56. Ke2 Kg8 57. f5 (57. a4 $15) 57... Qh2+ $17 58. Kd3 {[#]} Qd6+ (58... Qh3+ $1 $17 59. Kd4 Qxa3 60. fxe6 Qd6+ 61. Ke3 Qxe6 62. Qd8+ Kh7) 59. Ke2 $15 Qh2+ 60. Kd3 $1 {Precision: White = 39%, Black = 49%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Sanal, Vahap"]
[Black "Lugovskoy, Maxim"]
[Result "1/2-1/2"]
[ECO "C06"]
[WhiteElo "2539"]
[BlackElo "2440"]
[Annotator "TA"]
[PlyCount "146"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,146,26,0,30,17,33,23,29,28,32,17,31,24,21,22,39,0,0,0,0,-29,-16,-54,-27,-31,0,-9,0,-23,0,0,7,0,0,0,0,0,18,18,18,18,18,18,24,22,28,28,51,57,59,28,35,31,39,39,31,19,27,26,24,37,34,25,45,0,0,0,39,0,0,-2,0,0,0,-79,-80,-83,-76,-88,-86,-76,-60,-83,-24,-76,-81,-65,-14,-16,-16,-77,-77,-77,-76,-76,-66,-100,-100,-100,-100,-100,-100,-106,-100,-100,-100,-100,-100,-100,-100,-118,-118,-118,-118,-118,-118,-118,-118,-118,-100,-100,-100,-118,-100]} 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Qxf6 10. Nf3 h6 11. O-O Bd6 12. Nc3 O-O 13. Be3 Rd8 {C06: French Tarrasch: 3...Nf6 4 e5 Nfd7 5 Bd3 main lines} 14. a3 Nf8 15. Rc1 Bd7 {[%cal Bc8d7,Bd7e8,Be8g6][%mdl 32] White has an edge.} 16. h3 Be8 (16... Kh8 17. Bb1 Be8 18. Nh2 Bxh2+ 19. Kxh2 e5 20. Ne2 Bh5 21. Qd2 Bxe2 22. Qxe2 exd4 {0-1 (60) Fedorov,A (2565)-Iljiushenok,I (2499) Kazan 2016}) 17. Nh2 Bxh2+ 18. Kxh2 Bg6 $146 ({Wrong is} 18... Nxd4 $2 19. Bxd4 e5 20. Be3 $18) ({Predecessor:} 18... e5 19. Ne2 Bh5 20. f3 Bg6 21. Bxg6 Nxg6 {0-1 (42) Malac,M (2156)-Dobrotka,M (2196) Slovakia 2004}) 19. Bb5 Rac8 20. f4 a6 21. Be2 Na5 22. Ra1 Nc4 23. Bc1 Nd6 24. f5 exf5 ({Much weaker is} 24... Bxf5 $6 25. g4 $16) 25. Nxd5 Qf7 26. Nf4 Ne6 27. Bf3 {[#] Strongly threatening Bd5.} Ne4 28. Nxe6 Qxe6 29. Bf4 Kh7 30. Be5 Rd5 (30... Rc5 $5 31. Qe1 Rxe5 32. dxe5 Qxe5+ 33. Kh1 Rd3 $11) 31. Bxe4 fxe4 32. Qe2 Rdd8 33. Rae1 Rc6 34. Rf2 Rdc8 35. Qd2 Qb3 36. Re3 Qc2 37. d5 Qxd2 38. Rxd2 Rc2 39. Rxc2 Rxc2 $14 {[%mdl 4096] Endgame KRB-KRB} 40. d6 (40. Rb3 $5 {[%cal Rb3b7]} b5 41. Rc3 Rxc3 42. Bxc3 $14) 40... Be8 41. Rxe4 {With the idea Bd4.} Bc6 42. Rg4 g5 43. Kg1 Rd2 44. Kf1 Bb5+ 45. Kg1 Bc6 46. Rg3 Kg6 47. Kf1 (47. Bc3 $5 {[%cal Rc3d2]} Rxd6 48. Re3 $11) 47... Bb5+ 48. Kg1 Bc6 49. Re3 (49. Kf1 $11) 49... Rxg2+ $17 50. Kf1 {[#] Black must now prevent Rd3.} Rd2 $1 51. Ke1 Rd5 52. Bh2 Kf5 53. b3 Rd4 ({Better is} 53... Kf6 $17) 54. Re5+ (54. Be5 $11 {keeps the balance.} Rd5 55. Bg3) 54... Kf6 55. Re3 Re4 (55... Rd5 $15) 56. Rxe4 $11 Bxe4 {KB-KB} 57. Bg3 (57. Be5+ $11 Ke6 58. Bg7) 57... Ke6 $17 58. Kf2 Bf5 59. Kg2 h5 {[%cal Bh6h5,Bh5g4][%mdl 32]} 60. b4 b5 {Black is better.} 61. Be1 Kxd6 62. Bd2 g4 63. hxg4 hxg4 64. Kg3 Ke5 65. Bf4+ Kd4 66. Bc7 Kc3 67. Ba5 Kb3 68. Kh4 Kxa3 69. Kg3 Kb3 70. Kf2 Kc4 71. Kg3 Kd5 72. Bb6 Ke4 73. Ba5 Be6 {Precision: White = 57%, Black = 61%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Zakhartsov, Viacheslav V"]
[Black "Ozturk, Kubra"]
[Result "1/2-1/2"]
[ECO "E17"]
[WhiteElo "2539"]
[BlackElo "2298"]
[Annotator "TA"]
[PlyCount "29"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,29,16,16,41,10,34,26,39,28,23,23,41,9,39,36]} 1. d4 Nf6 2. c4 e6 3. Nf3 {[%cal Bg1f3,Bf3e5,Be5c6][%mdl 32]} b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Re1 Na6 8. Ne5 {E17: Queen's Indian: 4 g3 Bb7 5 Bg2 Be7} (8. a3 d5 9. cxd5 exd5 10. b4 c6 11. Nc3 Nc7 12. Qb3 Ne6 13. a4 Rb8 14. Ba3 c5 15. Rad1 c4 {1-0 (31) Giri,A (2785)-Romanov,E (2636) Sochi 2017}) 8... Bxg2 9. Kxg2 {LiveBook: 84 Games} d5 10. Nc3 $146 ({Find the theoretical novelty and annotate with similar games:} 10. Qa4 Nb8 11. Nc3 c5 12. cxd5 cxd4 13. Qxd4 exd5 14. Bg5 Re8 15. Nf3 Na6 {½-½ (25) Alexa,J (2332)-Jorgensen,E (2459) ICCF email 2002}) 10... dxc4 11. Qa4 {[#] And now Nc6 would win.} Nb4 12. a3 $1 {[%cal Ra3b4]} Nbd5 13. Nc6 Qd7 14. e4 Nxc3 15. bxc3 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Zeng, Chongsheng"]
[Black "Mu, Ke"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2537"]
[BlackElo "2411"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,65,0,3,28,0,0,-3,15,20,22,0,0,0,19,22,21,18,31,18,16,23,18,0,6,16,7,4,6,6,7,4,10,12,16,7,16,0,0,0,21,0,16,16,47,45,35,36,43,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Nc3 O-O 10. Be3 {LiveBook: 151 Games. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} a6 (10... Bg4 11. h3 Bh5 12. O-O Nxd4 13. Bxd4 Bxf3 14. gxf3 Qg5+ 15. Kh1 Qf5 16. fxe4 Qxh3+ 17. Kg1 Bxd4 18. Qxd4 Qg4+ 19. Kh1 Qh3+ 20. Kg1 Qg4+ 21. Kh1 Qh3+ 22. Kg1 {½-½ (22) Mamedyarov,S (2772)-Karjakin,S (2783) Shamkir 2017}) 11. Bd3 (11. Bxc6 $5 bxc6 12. h3 $11) 11... Bg4 $146 ({Predecessor:} 11... Bf5 12. O-O h6 13. Rc1 Nb4 14. Bb1 Rb8 15. Qb3 Nxc3 16. bxc3 Bxb1 17. Qxb1 Nc6 {1-0 (43) Mandetta,J-Cruz,A Santos 2008}) 12. O-O {The position is equal.} Nxc3 (12... Nxd4 $5 13. Nxe4 (13. Bxd4 Bxd4 14. Bxe4 Bxc3 $11) 13... dxe4 14. Bxe4 Bxf3 15. Bxf3 Nxf3+ 16. Qxf3 Qe7 $11) 13. bxc3 f6 14. exf6 Qxf6 {[%cal Rg4f3]} 15. Be2 Kh8 16. h3 Bh5 17. Qb3 Qd6 18. Qc2 Bxf3 19. Bxf3 Na5 20. Bg5 c6 {[#] aiming for ...Bc7.} 21. Bh4 Bc7 {[%csl Gc7][%cal Rd6h2]} 22. Bg3 Qd8 23. Bxc7 Qxc7 24. Be2 b5 25. Bd3 g6 26. Rae1 Rae8 27. Rxe8 Rxe8 28. f4 Rf8 29. Qf2 Qe7 30. Re1 Qf7 31. f5 {White is slightly better.} Nc4 32. g4 gxf5 33. Bxf5 {[%mdl 32768] Precision: White = 63%, Black = 45%. . Loss on Time!?} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Ladva, Ottomar"]
[Black "Kumsiashvili, Nikoloz"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2532"]
[BlackElo "2403"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,52,13,19,7,1,0,0,0,0,0,0,-24,39,37,43,46,50,60,81,80,70,77,70,75,70,56,87,89,54,55,105,91,108,85,114,86,105,109,330,327,331,242,243,213,217]} 1. c4 c6 2. g3 Nf6 3. Nf3 d5 4. Bg2 dxc4 5. O-O Nbd7 6. Na3 {A11: English Opening: 1...c6} Nb6 7. Ne5 Be6 8. Qc2 {[%cal Ra3c4] The position is equal.} Qd4 (8... h5 9. b3 cxb3 10. axb3 h4 11. Bb2 Qc8 12. Rfc1 hxg3 13. hxg3 Bd5 14. Nf3 g6 15. Nc4 {½-½ (41) Adams,M (2761)-So,W (2822) Shamkir 2017}) 9. Nxc6 bxc6 10. Bxc6+ Bd7 (10... Nfd7 $11 11. Bxa8 Nxa8) 11. Bxa8 $14 Nxa8 12. Nxc4 Qd5 $146 ({Find the theoretical novelty and annotate with similar games:} 12... Nb6 13. Nxb6 Qxb6 14. d3 Nd5 15. e4 {1-0 (35) Brunello,S (2537)-Korneev,O (2573) Otranto 2011}) 13. d3 g6 ({But not} 13... Bc6 $2 14. e4 $18) 14. e4 Qb5 15. a4 Qb7 16. Ra3 {[#] aiming for Rb3.} Bg7 17. Qb3 Qc8 18. Be3 $36 {[%cal Bc1e3,Be3a7,Ba7c5,Bc5e7][%mdl 2080] White is on the roll.} O-O 19. Bxa7 Qa6 20. Bc5 Rc8 21. Bxe7 {Hoping for Nd6.} Nxe4 22. dxe4 Rxc4 23. Rd1 Bd4 $2 {[#]} (23... Be8 $16) 24. Qd3 $1 $18 Bh3 25. Rc3 Rxa4 26. Qxa6 Rxa6 {Precision: White = 80%, Black = 58%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Dastan, Muhammed Batuhan"]
[Black "Sasikiran, Krishnan"]
[Result "1/2-1/2"]
[ECO "A07"]
[WhiteElo "2529"]
[BlackElo "2688"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,135,16,24,-4,0,0,0,0,15,0,0,0,0,0,15,15,21,22,22,22,13,17,22,21,36,0,0,-4,0,-52,-8,-11,-15,-32,-27,-77,-77,-77,-79,-82,-93,-88,-82,-116,-46,-54,0,-112,-112,-140,-116,-129,-136,-135,-100,-98,-87,-95,-108,-149,-146,-138,-86,-169,-155,-155,-4,-4,-4,-4,-4,-4,-4,-11,-11,-45,-64,-559,-547,-507,-492,-605,-593,-1188,-1244,-1256,-1144,-1161,-940,-12834,-12835,-12837,-12838,-12838,-12839,-12839,-12838,-12838,-12839,-12839,-12839,-12839,-12839,-12840,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. O-O Bg4 5. c4 e6 6. d3 Nbd7 7. cxd5 {A11: English Opening: 1...c6} cxd5 (7... exd5 8. Nc3 Bc5 9. Qb3 Bb6 10. Na4 O-O 11. Nxb6 axb6 12. Qc2 Re8 13. b3 b5 14. Bb2 Nf8 15. Nd4 Qd7 16. f3 Bh5 17. e4 Bg6 {½-½ (41) Van Wely,L (2674)-Oparin,G (2626) Monzon 2016}) 8. Qb3 Nc5 9. Qb5+ Qd7 10. Nc3 a6 11. Qxd7+ Ncxd7 {LiveBook: 4 Games} 12. h3 Bxf3 $146 ({Predecessor:} 12... Bh5 13. Nd4 Bc5 14. Nb3 Ba7 {1-0 (41) Loginov,V (2524)-Maiorov,N (2415) St Petersburg 2003}) 13. Bxf3 Bd6 14. d4 O-O-O 15. Bd2 Kb8 16. Rac1 Nb6 17. Bg5 h6 18. Bxf6 gxf6 19. e4 dxe4 20. Nxe4 Be7 21. Rfd1 Rd7 22. Nc5 Rc7 $1 23. b4 Rd8 24. Kf1 f5 25. Bh5 ({White should play} 25. Rc3 $11) 25... Bf6 26. Nb3 Rcd7 27. Ke2 f4 28. gxf4 Nd5 29. Kf3 Nxb4 30. Nc5 Re7 $1 ({Don't play} 30... Nxa2 $6 31. Nxd7+ Rxd7 32. Rc4 $14) 31. a3 Nd5 $36 {[%mdl 2048] Black is in control.} 32. Bg4 Nc7 (32... Bh4 $17 33. Re1 Rh8) 33. Rb1 $15 Nd5 (33... b5 $15) 34. Rd3 (34. Rbc1 $1 $11 {keeps the balance.}) 34... Ka7 $17 35. h4 Rc7 36. h5 Be7 37. f5 Bxc5 38. dxc5 Rxc5 39. fxe6 fxe6 {[%cal Bf7e6,Be6e5][%mdl 32]} 40. Kg3 Rg8 41. f3 Nf6 (41... Rg7 $142 42. Kh2 Rg5) 42. Kf4 (42. Kh4 $17 {was called for.}) 42... e5+ 43. Ke3 Nd5+ $2 ({But not} 43... Nxg4+ 44. fxg4 b5 45. Rg1 $15) (43... Rc6 $17 44. Bf5 Rg5) 44. Rxd5 $1 $11 Rxd5 {[%mdl 4096] Endgame KRR-KRB} 45. Be6 Rdd8 46. Bxg8 Rxg8 {KR-KR} 47. Rd1 Rg5 48. Ke4 Rxh5 49. Rd5 $2 {[%mdl 8192]} (49. a4 $1 $15) 49... Rh4+ $19 50. Ke3 Ra4 51. Rxe5 Rxa3+ 52. Ke4 b5 {[%cal Bb7b5,Bb5b4,Bb4b3][%mdl 32]} 53. f4 Ra4+ 54. Ke3 b4 $1 {[%cal Rb4b3]} 55. f5 {[#]} b3 $1 {[%cal Rb3b2]} 56. Kd3 {[#]} Rb4 $1 ({Less strong is} 56... Rf4 57. Kc3 $17) 57. Re1 Rf4 58. Re7+ Kb6 59. Kc3 Rf3+ 60. Kb2 a5 61. Re6+ Kb5 62. Re5+ Kb6 $2 ({Black should try} 62... Kb4 $19 63. Re4+ Kb5 64. Re5+ Kc4 65. Re4+ Kd5) 63. Ka3 {The position is equal.} h5 {[#] ...a4! is the strong threat.} (63... Ka6 $5 {[%cal Ra5a4]}) 64. f6 $1 {[%mdl 512]} h4 (64... b2+ $5 65. Kxb2 h4 $11) (64... Rxf6 65. Rxh5) 65. Rh5 h3 {[#] White must now prevent ...a4.} (65... Rf4 $5 {[%cal Ra5a4]}) 66. f7 $1 {[%mdl 512]} a4 {[#]} (66... b2+ $5 67. Kxb2 Rxf7 68. Rxh3 Rf5 $11) (66... Rxf7 67. Rxh3) 67. Rxh3 $1 {[%mdl 512]} Rxf7 {Hoping for ...Rf4.} (67... Rxh3 68. f8=Q) 68. Kxa4 {Precision: White = 42%, Black = 64%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Berelowitsch, Alexander"]
[Black "Harsha Bharathakoti"]
[Result "1-0"]
[ECO "C03"]
[WhiteElo "2527"]
[BlackElo "2404"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,103,25,16,66,70,83,65,70,72,329,72,87,80,83,81,88,65,106,42,46,44,44,21,30,39,31,0,57,51,81,66,65,77,88,60,87,50,78,77,77,77,77,65,58,69,81,53,90,92,112,87,116,97,97,70,269,241,281,300,379,379,345,232,250,257,239,243,247,239,276,217,237,225,250,232,550,550,635,622,616,584,29985,29986,29984,29985]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} e6 2. d4 d5 3. Nd2 Be7 4. Ngf3 Nf6 5. e5 Nfd7 6. Bd3 c5 7. c3 Nc6 8. O-O a5 9. a4 {C06: French Tarrasch: 3...Nf6 4 e5 Nfd7 5 Bd3 main lines} (9. Re1 cxd4 10. cxd4 Qb6 11. a4 Nxd4 12. Nxd4 Qxd4 13. Nf3 Qb6 14. Be3 Nc5 15. Bb5+ Bd7 16. Nd4 Bxb5 17. Nxb5 O-O 18. Qg4 Rfc8 {0-1 (33) Naroditsky,D (2631)-So,W (2779) ICC INT 2015}) 9... cxd4 10. cxd4 Qb6 11. Nb3 {LiveBook: 20 Games. White has an edge.} O-O 12. Ng5 $146 ({Predecessor:} 12. Re1 f5 13. exf6 Nxf6 14. h3 Bd7 15. Ne5 Nxe5 16. dxe5 Ng4 17. Be3 Nxe3 18. Rxe3 Bg5 19. Qh5 Bh6 20. g3 Rxf2 {0-1 (21) Mikheev,S (2315)-Geshelin,Y (2079) Wisla 2007}) 12... h6 13. Bh7+ Kh8 14. Bb1 {Qd3 is the strong threat.} g6 $2 {[%mdl 8192] [#]} (14... Bxg5 $16 {is a better defense.} 15. Bxg5 f5) 15. Nh3 $2 (15. Nxe6 $1 $18 {[%mdl 512] is the precise move to win.} fxe6 16. Bxg6) 15... Kg7 $16 16. Nf4 Rh8 17. Re1 Bg5 18. Ra3 Qd8 19. Qg4 (19. Na1 $16) 19... Nf8 $1 $14 20. Be3 h5 21. Qd1 Be7 22. Ra1 b6 23. Nd2 Bd7 ({Black should play} 23... Nxe5 $11 24. dxe5 d4) 24. g3 Rc8 25. h4 Nb4 26. Nf3 Qc7 27. Re2 Bc6 28. Rd2 Bb7 29. Ne2 Ba6 30. Nc3 Nh7 31. Qc1 Qd7 32. Kg2 Kf8 33. Qe1 Ke8 34. Rd1 Kd8 35. Qd2 Rc7 36. Ne1 Kc8 37. Nd3 Nxd3 $2 ({Black should try} 37... Kb7 $14) 38. Bxd3 $18 Bxd3 39. Qxd3 Kb7 40. Nb5 Rc6 41. Rac1 Rxc1 42. Rxc1 ({Don't do} 42. Bxc1 $6 Rc8 $16) 42... Rc8 43. Rxc8 Qxc8 44. b3 Qd7 45. Bh6 Kc8 46. Qf3 Bb4 47. Qf4 Kd8 $2 (47... Kb7 {is a better chance.} 48. Bg7 Qe8 49. Nd6+ Bxd6) 48. Bg7 Ke8 49. Qh6 Nf8 50. Qh8 f5 51. Bxf8 Bxf8 52. Nd6+ {Precision: White = 56%, Black = 30%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Sulskis, Sarunas"]
[Black "Kryakvin, Dmitry"]
[Result "1/2-1/2"]
[ECO "B56"]
[WhiteElo "2519"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,97,0,-3,19,7,13,8,41,5,22,22,46,12,29,31,35,31,31,29,32,27,31,29,29,31,29,39,35,32,19,7,7,7,7,7,22,0,13,14,16,19,20,5,19,5,19,8,6,7,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. f4 e5 7. Nf3 Be7 8. Bc4 O-O 9. O-O exf4 {B56: Classical Sicilian: Unusual Lines} 10. Bxf4 Be6 11. Bb3 Na5 12. Nd4 Nxb3 13. axb3 a6 14. Kh1 $146 ({Predecessor:} 14. Nxe6 fxe6 15. Qd3 Qb6+ 16. Kh1 Rad8 17. Bg5 {½-½ (47) Lahtinen,M (2225)-Maki,V (2415) Helsinki 1990}) 14... Rc8 15. Qd3 Qd7 16. Na4 {Strongly threatening Nb6.} Bd8 17. Nxe6 Qxe6 18. Bxd6 {[#] Threatens to win with e5.} Be7 19. Bxe7 Qxe7 20. Nb6 Rce8 21. Nd5 Qxe4 22. Nxf6+ gxf6 23. Qg3+ {The position is equal.} Qg6 24. Qf3 Qxc2 25. Qxb7 Qxb2 26. Rab1 Qe2 27. Rxf6 Re6 28. Rff1 Qe4 29. Qa7 Qg6 30. Rbc1 Re2 {[%csl Ge2][%cal Rg6g2] [#]} 31. Qb7 Qe4 $132 {[%mdl 2048] Black puts up resistance} 32. Qxe4 Rxe4 $11 {[%mdl 4096] Endgame KRR-KRR} 33. Rc3 Re6 34. h3 Rfe8 35. Rff3 Kg7 36. Kh2 R8e7 37. Rc4 Re4 38. Rg3+ Kf8 39. Rcc3 R4e6 40. Rgf3 Kg7 41. Rc4 Re4 42. Kg3 (42. Rc6 {feels hotter.} R4e6 43. Rcc3 Rg6 44. Rc2 Rb6 45. Kg3) 42... Rxc4 43. bxc4 {KR-KR} a5 44. c5 Rc7 45. Rc3 a4 46. Kf4 a3 47. Rxa3 {Ra5 is the strong threat.} Rxc5 48. Ra6 h6 49. Ke4 {Precision: White = 56%, Black = 71%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Lei, Tingjie"]
[Black "Kulaots, Kaido"]
[Result "1/2-1/2"]
[ECO "B42"]
[WhiteElo "2514"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "152"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,152,54,45,54,39,63,65,65,34,54,43,47,0,38,-47,35,7,24,18,21,16,39,18,28,5,22,0,0,0,0,-80,-60,-116,-92,-114,-117,-100,-108,-106,-108,-100,-94,-99,-99,-97,-93,-85,-94,-236,-145,-232,-101,-101,-101,-101,-101,-102,-102,-102,-102,-102,-93,-98,0,-100,-35,-44,-35,-35,-35,-43,-35,-35,-35,-35,-9,-9,-9,-9,-8,-35,-35,-35,-35,-35,-8,-35,0,-35,0,-35,-35,-35,-35,-35,-35,-35,0,-35,-35,-35,-35,-35,-35,-35,-35,-35,-35,-35,0,-35,0,-35,-35,-35,-35,-35,-35,-35,-35,-35,-35,-35,-35,-35,0,0,0,-35,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Qg4 g6 8. Qe2 d6 {B42: Sicilian: Kan Variation: 5 Bd3} 9. O-O Nd7 10. c4 (10. Nc3 Qc7 11. Be3 b6 12. a4 h5 13. f4 Ngf6 14. Bd4 O-O 15. f5 Ne5 16. fxg6 fxg6 17. h3 Nfd7 18. Rxf8+ Bxf8 19. Qe3 Bb7 20. Ne2 Re8 21. Nf4 Qd8 22. Nxg6 {1-0 (22) Nakamura,H (2789)-Markus,R (2662) Baku 2016}) 10... Qc7 11. f4 Ngf6 12. Nc3 b6 13. Be3 {LiveBook: 3 Games} O-O 14. Rac1 Re8 15. Nd2 Bb7 16. b4 $146 ({Find the theoretical novelty and annotate with similar games:} 16. b3) 16... Bf8 17. Nb3 Rac8 18. a4 Qb8 19. a5 ({Better is} 19. Nd2 $14) 19... bxa5 (19... d5 $15) 20. Nxa5 $14 Ba8 21. Rb1 Qc7 22. Rfc1 Rb8 23. h3 Bg7 24. Qf2 Nh5 25. Ne2 f5 26. exf5 exf5 27. c5 {[#]} (27. Rd1 $11) 27... dxc5 $1 $17 28. Bxa6 (28. Bxc5 $15 Nxc5 29. Qxc5) 28... Kh8 29. Bd3 Qd6 30. Rd1 Rxb4 31. Rbc1 {Strongly threatening Bxf5!} Qe7 $36 {[%mdl 2048] Black is in control.} 32. Nc4 Bc6 33. Ne5 Nxe5 34. fxe5 Qxe5 35. Bxc5 Rb2 {[%cal Rb2e2]} 36. Re1 {[#]} (36. Ba3 $17 Ra2 37. Rxc6 Rxa3 38. Rc5) 36... Ng3 $1 {[%mdl 512]} 37. Ba3 {[#]} (37. Bd4 $17 {was called for.} Nxe2+ 38. Rxe2 Qxd4 39. Rxc6 Rbxe2 40. Bxe2) (37. Nxg3 Rxf2) 37... Nxe2+ (37... Ra2 $1 $19 {[%cal Ra2a3] has better winning chances.} 38. Rxc6 Rxa3) 38. Bxe2 Rxe2 39. Rxe2 Qxe2 40. Qxe2 Rxe2 41. Rxc6 $19 {[%mdl 4096] Endgame KRB-KRB} Bd4+ 42. Kh2 Be5+ 43. Kg1 Bd4+ 44. Kh2 f4 ({Black should play} 44... g5 $17 45. Bc5 Be5+ 46. Kg1 Bg3 47. Bd4+ Kg8) 45. Rc4 Be3 46. Bc1 Bxc1 47. Rxc1 $15 {KR-KR} f3 48. Kg3 fxg2 {Threatens to win with ...Rc2!} 49. Kh2 Kg7 {And now ...Kh6 would win.} 50. Rc7+ Kh6 {...Ra2 is the strong threat.} 51. Ra7 g5 {White should prevent ...Rb2.} 52. Rb7 (52. h4 $5) 52... Kg6 53. Ra7 h5 54. Ra5 Kf6 55. Rb5 (55. h4 $5) 55... Kg6 56. Ra5 Kf6 57. Rb5 h4 {White must now prevent ...g4!} (57... g1=R+ $5 58. Kxg1 Re5 59. Rb6+ Re6 $15) 58. Rb4 Kf5 59. Ra4 Rd2 60. Rb4 Re2 {aiming for ...Ra2.} (60... Ra2 {with more complications.} 61. Rg4 Rf2 62. Ra4 Rc2 63. Ra5+ Kg6) 61. Ra4 g1=Q+ 62. Kxg1 Re4 (62... Re3 $5 {[%cal Re3h3]} 63. Kh2 Re2+ 64. Kg1 Re4 $15) 63. Ra3 Kf4 64. Kf2 Rb4 65. Rf3+ Ke4 66. Re3+ Kf4 67. Rf3+ Ke4 {( -> ...Rb2+)} (67... Ke5 {feels hotter.} 68. Kg1 Rb1+ 69. Rf1 Rb2 70. Re1+ Kf6) 68. Re3+ $1 Kf5 69. Ra3 Rb2+ 70. Kg1 Kf4 71. Ra4+ Kf3 72. Rg4 Rb5 73. Kh2 Re5 74. Kh1 $1 Re1+ 75. Kh2 Re2+ 76. Kh1 Re1+ {Precision: White = 59%, Black = 48%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Valsecchi, Alessio"]
[Black "Saveliev, Alexei"]
[Result "1-0"]
[ECO "E48"]
[WhiteElo "2493"]
[BlackElo "2396"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,71,-8,-8,72,0,10,-10,-12,-21,-12,-12,-20,-17,-15,-18,-20,-30,-15,-8,0,0,0,0,0,-23,0,-10,3,0,24,0,30,24,42,46,53,37,113,98,119,113,118,113,140,143,149,24,19,28,30,26,52,58,487,487]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. cxd5 exd5 7. Nge2 Re8 8. Bd2 {E48: Nimzo-Indian: Rubinstein: 5 Bd3 d5 including 6 Ne2, but excluding 6 a3} a6 9. O-O Bd6 10. Rc1 {LiveBook: 25 Games. The position is equal.} Ng4 $146 (10... Nbd7 $11) ({Predecessor:} 10... b6 11. Ng3 c5 12. Bb1 Be6 13. dxc5 Bxc5 14. Nce2 Nbd7 15. Bc3 Bd6 16. Nd4 Rc8 {1-0 (32) Navara,D (2742)-Stefansson,H (2574) Baku 2016}) 11. g3 (11. Nf4 $1 $16) 11... Nf6 $11 12. f3 c5 13. dxc5 Bxc5 14. Nd4 Nc6 15. Nce2 Qb6 {[%cal Rc5d4]} 16. Rf2 Bd7 17. Nxc6 bxc6 18. Nd4 Bf8 19. b4 $1 Rab8 20. Rb1 Qa7 21. Qc1 Rec8 22. Bc3 {[%cal Bd2c3,Bc3d4,Bd4c5][%mdl 32]} Ne8 {[%cal Bf6e8,Be8d6,Bd6f5][%mdl 32]} (22... a5 $5 23. bxa5 c5 24. Rxb8 Rxb8 $11) 23. Rc2 $36 {[%mdl 2048] Black is under pressure.} Nd6 24. Nb3 Bf5 25. Bd4 Qe7 26. Bxf5 ({Much worse is} 26. Bxa6 Rc7 $15) 26... Nxf5 27. Bc5 ({Don't blunder} 27. Rxc6 $2 Rxc6 28. Qxc6 Nxd4 $19) 27... Qg5 ({Better is} 27... Qe8 $14) 28. e4 $1 $16 Qxc1+ 29. Rbxc1 dxe4 30. fxe4 Nd6 {[#]} 31. Bxd6 $1 Bxd6 32. Rxc6 (32. a3 $16) 32... Rxc6 $11 33. Rxc6 Bxb4 34. Rxa6 Re8 35. Ra4 Rxe4 $2 {[%mdl 8192] [#]} (35... Bd6 $14) 36. a3 $1 {Precision: White = 47%, Black = 33%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Wan, Yunguo"]
[Black "Neiksans, Arturs"]
[Result "1-0"]
[ECO "C92"]
[WhiteElo "2482"]
[BlackElo "2582"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,47,24,18,26,18,16,9,15,0,0,0,15,0,0,0,0,0,0,-1,11,0,9,0,16,-59]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Bb7 10. d4 Nd7 11. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1h2,Bh2f3][%mdl 32]} exd4 {C92: Closed Ruy Lopez: 9...Be6, Karpov and Flohr-Zaitsev Variations} 12. cxd4 Re8 13. Nf1 {LiveBook: 80 Games} Na5 14. Bc2 Bf6 {The position is equal.} 15. N1h2 c5 16. d5 Nc4 17. Rb1 $1 Nce5 18. Nxe5 Nxe5 ({But not} 18... dxe5 $6 19. Ng4 $16) 19. f4 Nd7 20. Nf3 g6 21. Be3 {[#]} Rc8 $146 ({Predecessor:} 21... Bg7 22. Bf2 a5 {½-½ (22) Acs,P (2599)-Erdos,V (2615) Hungary 2016}) 22. Kh1 Rc7 23. Bf2 c4 24. e5 {[%mdl 32768] Precision: White = 64%, Black = 63%. . Loss on Time!?} (24. a3 $11) 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Pavlov, Sergey"]
[Black "Meskovs, Nikita"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2475"]
[BlackElo "2495"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,87,-1,-1,31,33,33,29,18,-9,29,46,35,40,62,49,90,79,83,43,86,80,125,88,122,120,110,102,125,103,128,120,203,164,310,310,420,236,231,232,236,118,120,136,325,49,259,270,461,440,540,521,547,548,544,543,491,539,510,503,450,251,243,243,235,221,547,561,623,623,593,600,1081,1086,1034,1033,978,970,935,908]} 1. c4 e5 2. Nc3 Nc6 3. e3 Nf6 4. Nf3 Bb4 5. Qc2 O-O 6. Nd5 d6 {A28: English Opening: Four Knights Variation} (6... Re8 7. Ng5 h6 8. Nxf6+ Qxf6 9. Qh7+ Kf8 10. Ne4 Qg6 11. Qxg6 fxg6 12. Bd3 Be7 13. Nc3 Kf7 14. O-O g5 {½-½ (68) Kovalenko,I (2657)-Paichadze,L (2568) Minsk 2017}) 7. a3 Bc5 8. b4 Bb6 $1 {White has an edge.} 9. Bd3 (9. Ng5 $5 {[%cal Rd5f6]} g6 10. Nxf6+ Qxf6 11. Ne4 $11) 9... h6 10. Nxf6+ Qxf6 11. Bb2 a6 12. O-O $146 ({Predecessor:} 12. h4 Ne7 13. Ng5 Bf5 {1-0 (64) Timon Piote,S (2138)-Fernandez Otero,J (2075) La Coruna 1999}) 12... Ne7 13. c5 Ba7 14. Bh7+ Kh8 15. d4 Qe6 16. Bd3 exd4 17. Nxd4 Qd7 18. Rfd1 dxc5 19. bxc5 Qd5 20. Rac1 Qh5 {[#]} (20... c6 $16 21. Be2 f6) 21. Ne2 $1 $18 Bg4 (21... Nd5 $142 22. Be4 Ne7) 22. h3 Be6 23. Qc3 $40 {[%mdl 128] White wants a kill.} (23. Nf4 $142 Qg5 24. Be4) 23... f6 24. Nf4 Qf7 25. Be4 (25. Qb4 $18) 25... c6 $16 26. Rd6 Bc8 $2 (26... Nd5 $16 {keeps fighting.} 27. Bxd5 Bxd5) 27. Bf3 $2 (27. Rcd1 $18) 27... Bb8 $2 (27... Ng6 $1 $14) 28. Bh5 $18 Qg8 $2 (28... g6 {was worth a try.} 29. Rxf6 Qxf6 30. Qxf6+ Rxf6) 29. e4 b6 30. e5 fxe5 31. Qxe5 {White wants to mate with Rxh6+.} Nf5 {Threatening ...bxc5.} 32. Ng6+ Kh7 {White should prevent ...bxc5.} 33. Nxf8+ Qxf8 34. Bg6+ Kg8 35. Bxf5 (35. Qc3 $142 Bxd6 36. cxd6) 35... Bxf5 36. Qd4 Bxd6 37. cxd6 ({Worse is} 37. Qxd6 Qxd6 38. cxd6 Bd7 $11) 37... c5 $2 (37... Qf6 {is tougher.} 38. Qxb6 Qg6) 38. Qd5+ {White is clearly winning.} Kh7 {[#]} 39. Re1 $1 {[%cal Re1e7]} Ra7 {[#] Black hopes to continue with ...Qf7.} 40. Re7 $1 {[%mdl 512]} Rd7 (40... Rxe7 41. dxe7) 41. Bxg7 Qxe7 42. Qxf5+ Kxg7 43. dxe7 Rxe7 44. Qc8 {Precision: White = 64%, Black = 22%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Shoker, Samy"]
[Black "Rakesh Kumar Jena"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2472"]
[BlackElo "2394"]
[Annotator "TA"]
[PlyCount "49"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,49,50,37,39,27,106,110,141,145,143,110,131,95,95,95,95,95,95,95,96,84,88,84,87,67,85,10,100,104,109,99,154,152,156,146,220,216,207,211,215,220]} 1. Nf3 c5 2. g3 Nc6 3. Bg2 Nf6 4. O-O e5 5. e4 (5. c4 d5 6. cxd5 Nxd5 7. Qa4 Nb6 8. Qc2 Be7 9. b3 Be6 10. Bb2 f6 11. d3 Rc8 12. Nbd2 Nd4 13. Qd1 Qd7 14. e3 Nxf3+ 15. Nxf3 {1-0 (46) Caruana,F (2808)-Karjakin,S (2781) Paris 2017}) 5... Nxe4 6. Re1 {LiveBook: 3 Games. A04: Unusual lines after 1 Nf3 and King's Indian Attack} Nf6 $1 7. Nxe5 Nxe5 $146 (7... Be7 $11) ({Predecessor:} 7... Be7 8. c3 Nxe5 9. Rxe5 O-O 10. d4 d6 11. Re1 d5 12. Bg5 Be6 {0-1 (56) Sigurjonsson,G (2475)-Alburt,L (2515) Wijk aan Zee 1980}) 8. d4 $16 {White is better.} d6 9. dxe5 dxe5 10. Rxe5+ Be6 11. Qe1 Bd6 12. Rxe6+ ({Worse is} 12. Bxb7 Bxe5 13. Bc6+ Kf8 $17) 12... fxe6 13. Bxb7 Rb8 14. Qxe6+ Qe7 15. Bc6+ Kf8 16. Qxe7+ Kxe7 17. Na3 Rhc8 18. Ba4 (18. Bb5 $16) 18... Rb4 (18... c4 $11 {keeps the balance.}) 19. Bb5 Re4 20. Be3 c4 {[#]} (20... Nd5 $142) 21. Ba6 $1 {[%cal Ra6c8] White is clearly better.} c3 {[#] And now ...Rc6 would win.} 22. b3 $1 (22. Bxc8 cxb2 23. Rb1 Bxa3 $15) 22... Rc6 (22... Rf8 $16) 23. Bb7 $18 Rxe3 24. Bxc6 Re2 25. Kf1 {Precision: White = 83%, Black = 52%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Fedorovsky, Michael"]
[Black "Ghosh, Diptayan"]
[Result "1/2-1/2"]
[ECO "E15"]
[WhiteElo "2467"]
[BlackElo "2562"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,46,0,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,-9,0,0,0,0,0,-16,-2]} 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Ba6 5. Qc2 c5 6. d5 {E15: Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations} exd5 7. cxd5 Bb7 8. Bg2 Nxd5 9. Qb3 Nf6 10. Ne5 d5 {LiveBook: 16 Games. The position is equal.} 11. Nc3 Be7 12. Qa4+ Nbd7 13. Nc6 Bxc6 14. Qxc6 Rc8 {[#]} 15. Qb7 $146 O-O (15... Rc7 $5 16. Qa6 $8 Nb8 17. Qa4+ Qd7 $11) 16. Nxd5 Nxd5 17. Qxd5 Bf6 18. O-O Ne5 19. Qb7 Rc7 20. Qa6 Qc8 21. Qxc8 Rcxc8 22. Rb1 Rfd8 23. b3 c4 {Precision: White = 71%, Black = 84%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Thybo, Jesper Sondergaard"]
[Black "Pultinevicius, Paulius"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2464"]
[BlackElo "2389"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,69,25,37,7,4,-16,1,0,-16,-67,40,44,39,30,49,66,58,56,55,32,37,39,45,19,52,62,71,71,123,135,139,153,149,170,523,148,519,529,502,286,334,247,255,248,1258,1521,1375,1367,1422,1306]} 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. Nc3 Be7 7. d4 cxd4 8. Qxd4 O-O 9. Rd1 d6 10. b3 Nbd7 11. Bb2 a6 {LiveBook: 369 Games} 12. Qf4 {A30: Symmetrical English: Double Fianchetto and Hedgehog} (12. Ng5 Bxg2 13. Kxg2 Rc8 14. Nce4 Rc6 15. Qd3 Re8 16. Nxf6+ Nxf6 17. Bxf6 Bxf6 18. Qxh7+ Kf8 19. Qe4 Rc5 20. Nh7+ Kg8 21. Nxf6+ Qxf6 {1-0 (39) Nakamura,H (2779)-Pantsulaia,L (2607) Doha 2016}) 12... Qb8 13. a4 (13. Ba3 $5 {[%cal Ra3d6]}) 13... Rc8 $146 ({Predecessor:} 13... d5 14. cxd5 Qxf4 15. gxf4 Nxd5 16. Nxd5 exd5 17. Ne5 Nf6 18. Rac1 Rac8 19. Bh3 Rxc1 20. Rxc1 {1-0 (53) Harutjunyan,G (2441)-Ivanov,V (2148) Khmelnitsky 2008}) 14. g4 {The position is equal.} Nc5 15. g5 (15. Nd2 $11) 15... Nfe4 (15... Nh5 $15 16. Qh4 Nxb3 17. Qxh5 Nxa1 18. Rxa1 Rxc4) 16. Nxe4 $14 Nxe4 17. h4 Nc5 18. b4 Nd7 $1 19. h5 $40 {[%mdl 128] Black needs to defend precisely.} Ra7 20. Qd4 {[%csl Gb2][%cal Rd4g7] [#]} (20. g6 $5 hxg6 21. hxg6 $14) 20... e5 $1 {[%cal Re5d4]} 21. Qg4 Nf8 22. Rac1 Bc6 23. Nh4 Bxg2 24. Nxg2 Ne6 (24... Re8 $142) 25. g6 $16 hxg6 26. hxg6 Bg5 27. Rc3 b5 $2 {[#]} (27... Re8 {is more resistant.} 28. Rcd3 Bf6) 28. Rf3 $2 (28. gxf7+ $18 Kxf7 29. Rf3+ Bf6 30. Nh4) 28... Bf6 $2 {[%mdl 8192]} (28... Re8 $16) 29. gxf7+ $18 Kxf7 30. Ne3 Nf4 31. Rxf4 exf4 32. Nf5 ({Not} 32. Qxf4 d5 $16) 32... Rh8 $2 (32... Rxc4 33. Nxd6+ Kf8) 33. Bxf6 {White is clearly winning.} Kxf6 34. Rxd6+ Ke5 35. Qg6 {Precision: White = 47%, Black = 33%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Hambleton, Aman"]
[Black "Boruchovsky, Avital"]
[Result "1/2-1/2"]
[ECO "A40"]
[WhiteElo "2461"]
[BlackElo "2556"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,112,78,73,61,75,67,90,96,93,82,78,67,69,56,65,48,80,64,74,68,97,100,120,71,77,85,87,77,77,75,75,74,72,78,84,54,66,35,92,64,78,78,96,34,31,10,52,35,44,47,85,85,76,79,92,96,101,98,93,79,69,51,42,33,37,29,31,0,0,0,0,-75,-75,-75,-75,-75,-75,-75,-75,-75,-34,-91,-8,-8,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-14,-8,-14,-8,-8,-8]} 1. d4 e6 2. Bf4 g5 (2... Nf6 3. e3 d5 4. c4 Bd6 5. Bxd6 cxd6 6. Nc3 dxc4 7. Bxc4 O-O 8. Nf3 a6 9. O-O b5 10. Bd3 Bb7 11. Qe2 Nbd7 12. a4 {1-0 (44) Karjakin,S (2783)-Meier,G (2630) chess.com INT 2017}) 3. Be5 Nf6 4. h4 $146 ({Predecessor:} 4. e3 d6 5. Bxf6 Qxf6 6. Nc3 Bg7 7. Nf3 g4 8. Nd2 e5 9. Nde4 Qd8 10. dxe5 Bxe5 {0-1 (47) Grigoryan,M (2016)-Manakova,M (2254) Mamaia 2016}) 4... gxh4 5. Nf3 Bg7 6. e3 {[%mdl 1024] White has strong compensation. A40: Unusual replies to 1 d4} d6 7. Bf4 b6 8. Bb5+ {White is better.} Bd7 9. Bd3 Nc6 10. Rxh4 Qe7 11. Nc3 O-O-O 12. Qd2 h6 13. Bg3 h5 14. O-O-O Ng4 15. Rdh1 e5 16. d5 Nd4 17. Rxh5 ({Not} 17. exd4 Bh6 $17) 17... Nf5 18. Rxh8 Rxh8 19. Rxh8+ Bxh8 20. Bxf5 Bxf5 21. e4 Bd7 22. Qe2 Kb7 23. Kb1 Qf8 ({Better is} 23... f5 $14) 24. Nh4 Qh6 25. a4 a6 26. Qf3 (26. a5 $16) 26... Nf6 $14 27. Nf5 Qh7 (27... Bxf5 $5 28. exf5 Qh1+ 29. Ka2 Bg7 $11) 28. Ne3 Bg7 29. Ka2 b5 30. axb5 axb5 {Black wants to play ...b4.} 31. b4 Qh5 32. Qxh5 Nxh5 33. Bh4 Bh6 34. Nf5 Bd2 35. Ne2 Bxb4 36. g4 Nf4 37. Nxf4 exf4 {[%mdl 4096] Endgame KBB-KBN} 38. f3 Bc3 39. Kb3 b4 $1 40. Bd8 (40. Bf2 $11 {keeps the balance.}) 40... Bb5 $17 41. Bg5 Be2 42. Nh4 Ka6 43. Bxf4 Kb5 {[%csl Gb5][%cal Re2c4] [#]} 44. Ka2 Ka4 45. g5 ({White should play} 45. Bg5 $15) 45... Bd1 (45... Be1 $17 46. g6 fxg6) 46. Kb1 $11 {The position is equal.} b3 47. cxb3+ Kxb3 {[#] ( -> ...Bb2)} 48. Kc1 $1 {[%cal Rc1d1]} Be2 49. g6 $132 {[%mdl 2048] White puts up resistance} fxg6 50. Nxg6 Bxf3 51. e5 Bb4 52. exd6 cxd6 53. Ne7 Bg4 54. Nc6 Bc5 55. Kd2 Ka4 (55... Kc4 $5 {[%cal Rc4d5]}) 56. Nd8 Bf3 {Precision: White = 59%, Black = 51%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Thorfinnsson, Bragi"]
[Black "Mandizha, Farai"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2461"]
[BlackElo "2392"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,66,0,46,37,34,15,47,-18,64,70,74,72,66,41,67,-7,90,0,52,42,49,0,0,-58,-43,-73,-80,-144,-154,-145,-139,-214,-234,-231,-125,-193,-185,-389,-391,-385,-381,-374,-376,-425,-410,-433,-275,-391,-392,-376,-352,-545,-554,-628,-642,-672,-651,-953,-957]} 1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 4. e3 Bg7 5. h4 c5 (5... c6 6. Nf3 Bg4 7. Be2 Nbd7 8. Ne5 Bxe2 9. Qxe2 h5 10. O-O-O Qa5 11. Kb1 {1-0 (44) Karjakin,S (2781)-Giri,A (2771) Stavanger 2017}) 6. Nb5 {And now Nc7+ would win. A45: Trompowsky Attack} Na6 $1 7. c3 O-O 8. h5 $146 (8. Be2 $14) ({Predecessor:} 8. Be2 h6 9. Nf3 Ne4 10. Ne5 Nd6 11. a4 {1-0 (47) Zhang,Z (2641)-Praggnanandhaa,R (2447) Dubai 2017}) 8... Bg4 (8... Nxh5 $11 9. Be5 Bxe5 10. dxe5 c4) 9. f3 $1 $14 {[%cal Rf3g4]} Bd7 10. g4 $1 Qb6 11. Qe2 Rac8 12. Nh3 ({White should try} 12. a4 $14) 12... Rfe8 (12... gxh5 $11 {keeps the balance.} 13. g5 Ne8) 13. Be5 (13. hxg6 $16 hxg6 14. a4) 13... Nb8 ({But not} 13... gxh5 14. g5 $16) ({Black should play} 13... cxd4 $11 14. hxg6 hxg6) 14. hxg6 hxg6 15. Nf4 cxd4 16. exd4 (16. Nxd4 $11 Nc6 17. Nxc6 Bxc6 18. O-O-O) 16... Nc6 $1 $36 {[%mdl 2048] Black has the initiative.} 17. a4 a6 18. Na3 (18. a5 $142 Nxa5 19. Na3) 18... Nxe5 $17 19. dxe5 Bxa4 20. g5 (20. Qf2 $17 Nd7 21. e6) 20... Nd7 $19 21. e6 fxe6 ({Better is} 21... Ne5 $1 $19 22. Bh3 f5 23. gxf6 Bxf6 24. Nxd5 Qd6) 22. Bh3 {[#]} (22. Qxe6+ $17 Qxe6+ 23. Nxe6) 22... Nf8 $1 {Strongly threatening ...Rxc3!} 23. Nxe6 $2 {[#]} (23. Bxe6+ Nxe6 24. Qxe6+ Qxe6+ 25. Nxe6) 23... Rxc3 $1 {[%mdl 512]} 24. bxc3 Bxc3+ 25. Kf1 {aiming for Rb1.} Bxa1 26. Nxf8 Kxf8 27. Be6 {intending Rh4.} Qb2 28. Qe3 {[#]} (28. Rh4 $142 Qc1+ 29. Qe1 Qxe1+ 30. Kxe1) 28... Qe5 $1 {[%cal Re5e3]} 29. Qxe5 Bxe5 30. Rh7 (30. Bxd5 $142 b5 31. Be4) 30... Rd8 {Black is clearly winning.} 31. Rf7+ Ke8 {Hoping for ...Rd6.} 32. Rh7 Rd6 33. Bf7+ Kf8 {Precision: White = 32%, Black = 53%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Wieczorek, Oskar"]
[Black "Krykun, Yuriy"]
[Result "1/2-1/2"]
[ECO "D90"]
[WhiteElo "2460"]
[BlackElo "2350"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,101,-10,17,-9,46,41,38,0,45,28,44,-20,8,-13,-16,-22,-14,-7,-13,-10,27,0,0,0,0,-15,0,0,0,0,12,0,0,-19,-31,-43,-55,-48,-40,-57,-41,-74,-79,-77,-60,-94,-89,-133,-114,-169,-160,-167,-142,-136,-62,-372,-363,-475,-462,-915,-874,-849,-760,-1307,-758,-711,-312,-298,-301,-411,-140,-242,-105,-111,-104,-116,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 g6 2. d4 Nf6 3. Nc3 d5 4. Nf3 Bg7 5. h4 c6 (5... O-O 6. cxd5 Nxd5 7. h5 c5 8. hxg6 hxg6 9. Bh6 Bxh6 10. Rxh6 Nxc3 11. bxc3 Kg7 12. Qd2 cxd4 {½-½ (42) Li,C (2735)-Svidler,P (2749) Geneve 2017}) 6. Bg5 {D90: Grünfeld: 4 Nf3 Bg7 sidelines} Ne4 (6... dxc4 $11 7. e4 b5) 7. e3 $14 Qa5 8. Qb3 {White is slightly better.} dxc4 9. Bxc4 Nd6 $1 10. h5 $146 ({White should try} 10. Be2 $14) ({Predecessor:} 10. Be2 Bg4 11. Bf4 Qb6 12. Qc2 Nd7 {0-1 (40) Villegas,P (2329)-Goh,W (2444) Baku 2016}) 10... Nxc4 11. Qxc4 (11. h6 $5 {[%cal Rh6g7]} Bxd4 12. exd4 $11) 11... h6 12. Bf4 Be6 13. Qd3 $132 {[%mdl 2048] White is not keeping still} g5 14. Be5 f6 15. Bxb8 Rxb8 16. Qg6+ Kf8 17. Qd3 Kf7 18. Qg6+ Kf8 19. Qc2 Kf7 20. Nd2 (20. d5 $5 cxd5 21. Nd4 $11) 20... Rhd8 21. Nb3 Qf5 22. Qe2 Qg4 23. f3 Qg3+ 24. Kf1 Kg8 25. Nc5 {[#]} Bf7 $1 26. Rc1 Qc7 27. g4 e5 28. Qh2 Qe7 29. Kg2 {[#]} (29. Re1 $17 {is a better defense.}) 29... f5 $1 $19 ({Resist} 29... exd4 30. exd4 f5 31. Rhe1 $17) 30. gxf5 exd4 31. exd4 Qf6 ({Black should play} 31... Bxd4 $17 32. N5e4 Be5) 32. Nd7 $2 {[%mdl 8192]} (32. Qe5 $15) 32... Qxf5 33. Nxb8 Rxd4 34. Rhf1 (34. Rhe1 $142 Rd2+ 35. Re2 Bxc3 36. Rxd2 Bxd2 37. Nxc6) 34... Be5 35. Qg1 Rh4 36. Rcd1 Qf4 {[%csl Ge5][%cal Rf4g3]} 37. Rf2 Bxb8 (37... Bc4 $142 {[%csl Ge5][%cal Rf4g3]} 38. Ne2 Bxe2 39. Rd8+ Kf7 40. Rxe2 Rh2+ 41. Qxh2 Qxh2+ 42. Kf1 Qh1+ 43. Kf2 Bxb8 44. Rd7+ Kf6 45. Rxb7 Qxh5) 38. Rd8+ Kg7 39. Ne2 Qc7 $2 (39... Qf5 $19 {[%csl Gh4][%cal Rf5h3] and Black stays clearly on top.} 40. Kf1 Bc7) 40. Qd1 (40. Rd4 $17) 40... Bd5 (40... Qh2+ $19 41. Kf1 Qh3+ 42. Ke1 Bc7) 41. Rxd5 $17 cxd5 42. Qxd5 Rxh5 (42... Qb6 $17 {( -> ...Rh2+)} 43. Kg1 Qc6 44. Qxc6 bxc6) 43. f4 $1 $11 {Ng3 is the strong threat.The position is equal.} Rh4 {[%cal Rg5f4]} (43... Qf7 $5 {[%cal Rf7d5]} 44. Qd4+ Qf6 $11) 44. Ng3 {Black must now prevent Nf5+.} Rg4 45. Qd4+ Kg8 46. Qd5+ Qf7 47. Qd8+ Qf8 48. Qd5+ Qf7 49. Qd8+ Qf8 50. Qd5+ Qf7 51. Qd8+ {Precision: White = 43%, Black = 44%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Lanka, Zigurds"]
[Black "Bogner, Sebastian"]
[Result "1/2-1/2"]
[ECO "B29"]
[WhiteElo "2434"]
[BlackElo "2600"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,41,0,-7,-16,-39,-41,-52,-11,-79,-78,-75,-77,-78,-81,-81,-72,-81,-65,-50,-66,-69,-84,-81,-79,-72,-87,-105,-100,-120,-82,-135]} 1. e4 c5 2. Nf3 Nf6 3. Nc3 d5 4. Bb5+ Bd7 5. Bxd7+ Qxd7 6. exd5 Nxd5 7. O-O Nc6 {B29: Sicilian: 2 Nf3 Nf6 (Nimzowitsch Variation)} 8. Ne4 (8. d4 Nxc3 9. bxc3 Rd8 10. Be3 cxd4 11. cxd4 e6 12. c4 Be7 13. Qb3 O-O 14. Rab1 b6 15. Qb5 {½-½ (62) Vidarte Morales,A (2355)-Alonso Rosell,A (2537) Barcelona 2017}) 8... e5 9. Re1 Be7 {Black is slightly better.} 10. Ng3 {[#]} (10. c4 $11 Nb6 11. Nc3) 10... f6 $1 $17 11. c3 O-O-O 12. d4 {[%cal Rd4e5]} cxd4 13. cxd4 Bb4 14. Bd2 Nxd4 15. Nxd4 exd4 16. Re4 $146 Bxd2 17. Qxd2 {Black is better.} Ne7 18. Rd1 {[%cal Re4d4]} Nc6 19. b4 d3 20. h3 Qd5 21. Kh2 {Precision: White = 46%, Black = 77%.} (21. Qc3 $142) 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Abdumalik, Zhansaya"]
[Black "Vorobiov, Evgeny E"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2423"]
[BlackElo "2569"]
[Annotator "TA"]
[PlyCount "33"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,33,0,0,23,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 O-O 8. Be2 d6 9. O-O Bd7 10. f3 Qb6 11. Ncb5 a6 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0} 12. Nc2 Qa5 13. Bd2 $146 (13. Nc3 Rfc8 14. Qd2 Ne5 15. c5 dxc5 16. f4 Neg4 17. e5 Rd8 18. exf6 Bf5 19. Qe1 Nxf6 {½-½ (47) Svetushkin,D (2588)-Gharamian,T (2663) Metz 2013}) 13... Qb6+ 14. Be3 Qa5 15. Bd2 Qb6+ 16. Be3 {LiveBook: 16 Games} Qa5 17. Bd2 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Henderson de La Fuente, Lance"]
[Black "Vishnu Prasanna  V"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "2412"]
[BlackElo "2538"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,62,25,29,3,12,0,8,0,0,-8,-8,-14,-16,-31,-22,-24,-24,-18,-16,-22,-18,-26,-33,-46,-42,-60,-8,-52,-37,-68,-10,-14,0,0,0,0,0,0,0,-317,-306,-558,-312,-1035,-397,-762,-758]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O Nge7 5. Re1 Ng6 6. c3 a6 7. Bf1 Be7 8. d4 cxd4 9. cxd4 d5 10. exd5 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6} (10. e5 O-O 11. Nc3 Nh4 12. Nxh4 Bxh4 13. Be3 Bd7 14. Rc1 b5 15. Ne2 f5 16. exf6 Qxf6 17. g3 Bg5 18. Bxg5 Qxg5 {½-½ (31) Ni,H (2646)-Wang,H (2737) China 2013}) 10... exd5 11. g3 $146 ({Predecessor:} 11. Nc3 O-O 12. Be3 Be6 13. Rc1 Na5 14. Qd2 h6 15. Bd3 Nc4 16. Qc2 Nh4 17. Nxh4 Nxe3 18. Rxe3 Bxh4 {½-½ (32) Becerra Rivero,J (2547)-Shabalov,A (2624) Connecticut 2004}) 11... Bg4 12. Bg2 {The position is equal.} O-O 13. Nc3 Qd7 14. Be3 Rad8 15. Qa4 Qf5 16. Nd2 Bh3 17. Bxh3 Qxh3 18. Qb3 Bb4 19. a3 Bxc3 20. bxc3 Rd6 $40 {[%mdl 128] Hoping for ...Nh4! Black mounts an attack.} 21. Nf3 Qf5 ({Black should try} 21... Na5 $15 22. Qb1 f5) 22. Qd1 Rc8 23. Rb1 Rd7 (23... Rf6 $15 24. Bg5 Qxf3 25. Bxf6 Qxf6 26. Rxb7 Na5) 24. Nd2 $11 Na5 25. Nb3 Nxb3 $1 26. Rxb3 Re7 {[%cal Bd7e7,Be7e4,Be4e2][%mdl 32]} 27. a4 h5 28. h4 $2 {[%mdl 8192] [#]} (28. Bd2 $11 {and White is okay.}) 28... Rce8 $1 $19 29. Rb1 $2 (29. Bd2 Qg4 30. Rb1) 29... Re4 30. Qd2 $2 {[#]} (30. Bd2 Nxh4 31. Rxe4 Rxe4 32. Rxb7) 30... Qf3 $2 (30... Nxh4 $1 {[%mdl 512] ( -> ...Qh3)} 31. gxh4 Rxh4) 31. Bg5 $2 (31. Qd1 Nxh4 32. Qxf3 (32. gxh4 $2 Qh3 $19) 32... Nxf3+ 33. Kf1 Nxe1 34. Kxe1) 31... Re2 {Precision: White = 22%, Black = 56%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Krivonosov, Oleg"]
[Black "Kollars, Dmitrij"]
[Result "0-1"]
[ECO "E92"]
[WhiteElo "2397"]
[BlackElo "2514"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,105,49,49,51,43,53,36,46,50,0,16,12,14,10,16,0,0,0,22,10,56,47,84,85,85,85,85,85,84,79,175,68,73,72,112,82,110,112,155,155,153,153,202,131,139,139,139,139,139,139,139,139,507,446,513,542,480,450,12838,12839,12839,12839,12840,12840,12841,12841,12843,12843,12846,12846,29985,29986,29987,29988,29988,29989,29990,29990,12851,29992,12851,29995]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 c6 10. Nxe5 Re8 11. O-O-O Na6 12. Rd6 Nh5 13. Nd3 {E92: King's Indian: Classical: 6 Be2 e5: 7 dxe5, 7 Be3 and Petrosian System without 7...Nbd7} (13. Ng4 Bxg4 14. Bxg4 Bxc3 15. bxc3 Rxe4 16. Bxh5 gxh5 17. Rhd1 Rxc4 18. Bf6 Re8 19. f3 {½-½ (19) Kiselev,V (2535)-Skorchenko,D (2502) Dombai 2010}) 13... Bf8 $1 {[%cal Rf8d6] LiveBook: 3 Games} 14. Rd8 Rxd8 15. Bxd8 {White is slightly better.} Be6 16. Bg5 Bxc4 17. Nf4 $146 ({Predecessor:} 17. Rd1 Ng7 18. Be3 Ne6 19. Kb1 Nec5 20. Nc1 Be6 {1-0 (57) Narkun,M (2251)-Rodrigues,A (1747) LSS email 2008}) 17... Bxe2 18. Nfxe2 Nc5 19. Rd1 Ng7 20. Nd4 Re8 21. f3 a5 22. Kc2 f5 (22... Nge6 $5 {[%cal Re6g5]} 23. Be3 Nxd4+ 24. Bxd4 (24. Rxd4 f5 $11) 24... b5 $11) 23. exf5 Nxf5 24. Nxf5 gxf5 25. Bd8 $1 a4 26. Bb6 a3 27. bxa3 Re3 (27... Ne6 $16) 28. Bxc5 (28. Rd8 $18 {And now Bxc5 would win.} Rxc3+ 29. Kxc3 Na4+ 30. Kb3 Nxb6 31. a4) 28... Bxc5 $18 {[%mdl 4096] Endgame KRB-KRN} 29. Rd7 b5 30. a4 (30. Rd3 {with more complications.} Re8 31. a4 bxa4 32. Nxa4 Bb4 33. Nc3) 30... bxa4 31. Rd3 $1 Rxd3 32. Kxd3 $16 {KB-KN} a3 {[#]} 33. Ne2 $1 Bd6 34. h3 Kf7 35. Nd4 Kf6 36. Nxc6 h5 37. Nd4 Ke5 38. Ne2 Kd5 $2 {[%mdl 8192]} (38... h4 $16 39. f4+ Kd5) 39. g3 $18 {[%cal Bg2g3,Bg3f4][%mdl 32]} Ke5 40. h4 Kd5 41. Nf4+ Bxf4 (41... Ke5 $142 42. Kc4 Kf6 43. Nxh5+ Kg6) 42. gxf4 {KP-KP} Kc5 {[#]} 43. Kc3 $1 {[%cal Rc3b3]} Kd5 44. Kb4 Kd4 45. Kxa3 Ke3 46. Kb4 Kxf4 47. a4 Kxf3 {KPP-KPP} 48. a5 Ke2 49. a6 f4 50. a7 f3 51. a8=Q f2 52. Qg2 Ke1 53. Kc3 {[%mdl 32768] Precision: White = 78%, Black = 32%. . Sensor Board Error (Ke4/e5)?} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Agmanov, Zhandos"]
[Black "Schroeder, Jan-Christian"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2393"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "36"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,36,48,5,27,30,10,0,0,2,12,-9,-11,-8,0,-8,-3,-8,-10,-10,116]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 O-O 6. O-O d6 7. a4 a6 8. h3 Ba7 9. Re1 Ne7 10. Nbd2 c6 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} 11. Bb3 Ng6 12. d4 $146 {The position is equal.} ({Predecessor:} 12. Nf1 d5 13. Ng3 h6 14. exd5 Nxd5 15. d4 exd4 16. Nxd4 Re8 17. Rxe8+ Qxe8 18. Bxd5 cxd5 {½-½ (40) Tomashevsky,E (2724)-Jakovenko,D (2714) Novosibirsk 2016}) 12... exd4 13. cxd4 d5 14. e5 Nh5 $1 15. Nf1 f6 16. Bc2 Nhf4 17. Ra3 fxe5 18. Nxe5 Qh4 (18... Bf5 $11) 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Pershin, Denis"]
[Black "Christiansen, Johan-Sebastian"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2353"]
[BlackElo "2475"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,84,0,23,13,0,9,11,25,7,32,29,23,16,9,5,24,31,-26,0,0,0,0,0,0,0,0,42,33,38,37,58,1,0,-16,-6,0,0,-15,-22,-58,85,72,172,172,157,148,377,361,378,357,327,241,237,0,0,0,77,75,181,181,566,593,530,542,643,639,665,681,693,695,706,664,29981,29982,29982,29983,29986]} 1. d4 d5 2. Nc3 Nf6 3. Bf4 a6 4. e3 e6 5. g4 h6 (5... c5 6. g5 Nfd7 7. Nf3 Nc6 8. a3 b5 9. h4 Bb7 10. h5 Nb6 11. Ne5 Nxe5 12. Bxe5 {1-0 (26) Carlsen,M (2832)-Caruana,F (2808) Stavanger 2017}) 6. Qf3 {D00: 1 d4 d5: Unusual lines} b5 $146 ({Predecessor:} 6... b6 7. O-O-O Bb7 8. Nge2 Nbd7 9. h4 Bd6 10. Bg2 Bxf4 11. Nxf4 Qe7 {½-½ (46) Nadassy,A (2062)-Lukacs,A (1735) Budapest 2012}) 7. h4 b4 8. Nce2 {The position is equal.} c5 9. g5 Ne4 10. Ng3 Bb7 11. gxh6 gxh6 12. Bd3 {[%cal Rg3e4]} Nf6 13. c3 (13. Be5 $14 Nbd7 14. Nh5) 13... Nbd7 14. cxb4 cxd4 15. exd4 Bxb4+ 16. Kf1 Qb6 17. N1e2 Bd6 18. Bxd6 Qxd6 19. Rc1 Rg8 20. Nh5 (20. Qe3 $14) 20... Ke7 $11 21. Neg3 Nxh5 (21... Ne4 $5 {[%cal Re4d2]} 22. Qe3 a5 $15) 22. Nxh5 Qb6 23. Qf4 Rac8 24. Re1 Qxb2 {[#]} (24... a5 $15 {stays ahead.} 25. Re2 Ba6) 25. Rh3 $1 $36 {[%cal Rh3f3][%mdl 2048] Threatens to win with Rf3. White is really pushing.} Qc3 (25... Bc6 $16) 26. Rhe3 $18 ({Much less strong is} 26. Rf3 $6 Kd8 $14) 26... Rcf8 27. Rb1 Bc6 $2 {[#]} (27... Bc8 $16 {might work better.}) 28. Ng3 $1 {[%cal Rg3f5]} Rxg3 29. Rxg3 (29. Qxg3 Qxd4 30. h5 Bb5 $11) 29... Qa5 30. Rb2 Qa4 31. Qc7 $2 ({White should play} 31. Qe3 $18) 31... Qxd4 $11 32. Rb1 Ba4 (32... Qc5 $11) 33. Rb7 $16 {Black must now prevent Kg1.} Rd8 (33... f5 $16 {was called for.}) 34. Bxa6 $18 Qxh4 $2 (34... Ra8 {is tougher.}) 35. Qc5+ Kf6 36. Qc3+ e5 {intending ...Qh1+.} 37. Rb4 ({Not} 37. Qf3+ Ke6 $16) 37... Qh1+ 38. Rg1 Qh5 39. Be2 d4 40. Qg3 Qf5 41. Qh4+ Ke6 42. Bg4 (42. Bc4+ Kd6 $18) 42... Kd5 {Precision: White = 72%, Black = 36%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.10"]
[Round "6"]
[White "Badelka, Olga"]
[Black "Baldauf, Marco"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "2335"]
[BlackElo "2460"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,86,2,-8,8,-28,-34,-40,10,0,7,-1,8,0,21,-8,29,0,0,-30,-21,-22,-8,-32,-36,-42,12,-3,0,0,25,-15,26,0,0,0,11,-186,-186,-169,-163,-275,-263,-267,-275,-255,-255,-420,-426,-416,-397,-560,-557,-543,-543,-530,-499,-529,-490,-496,-460,-1095,-1082,-1404,-1369,-1404,-1404,-1052,-1071,-5314,-5297,-29989,-29987,-29990,-29962,-29979,0,-29990,-29991]} 1. c4 g6 2. g3 c5 3. Bg2 Bg7 4. Nc3 Nc6 5. d3 e6 6. Bxc6 bxc6 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7} 7. Qd2 d6 8. b3 Ne7 {Black is slightly better.} 9. Bb2 e5 10. O-O-O Be6 $146 ({Predecessor:} 10... O-O 11. f4 Nf5 12. Nf3 f6 13. Rdf1 Qe7 {0-1 (13) Rakhmanov,A (2637)-Fressinet,L (2702) Bastia 2015}) 11. e4 Qd7 12. f3 O-O-O 13. Kc2 h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 14. a3 h4 {White should prevent ...hxg3.} 15. g4 f6 16. h3 Bh6 17. Qf2 f5 ({Black should try} 17... g5 $15) 18. Bc1 Bxc1 19. Rxc1 Kc7 (19... fxg4 20. hxg4 a5 21. Nh3 $14 (21. Rxh4 g5 $16)) 20. b4 Rb8 21. bxc5 d5 $1 $36 {[%cal Rd5c4][%mdl 2048] White is under pressure.} 22. Nge2 $1 d4 23. Nd1 $2 {[#]} (23. Qh2 $11 {and White is okay.} f4 {[#]} 24. Nxf4 $1 {[%mdl 512]} exf4 25. Qxf4+ Kb7 26. Rb1+ Ka8 27. Rxb8+ Rxb8 28. Rb1) 23... Bxc4 $1 $19 {[%mdl 512]} 24. Kd2 (24. dxc4 d3+) 24... Ba6 {Strongly threatening ...Rb3.} 25. gxf5 (25. Rc2 {was worth a try.}) 25... gxf5 26. Qh2 f4 27. Rg1 Qe6 {...Qb3 is the strong threat.} (27... Rb3 28. Nf2 $19) 28. Rg7 $2 (28. Rc2 {is the only way for White.}) 28... Rbg8 29. Rxg8 Rxg8 ({Less strong is} 29... Qxg8 30. Nf2 $17) 30. Rb1 (30. Nb2 {might work better.} Qa2 31. Rc2 Qxa3 32. Nc1) 30... Qa2+ 31. Rb2 Qxa3 32. Nxf4 {intending Nd5+!} Rg3 ({Stronger than} 32... exf4 33. Qxf4+ Kd8 34. Qd6+ (34. Rb8+ Bc8 $11) 34... Ke8 35. Rb8+ Kf7 36. Qf4+ Kg6 37. Qg4+ Kh6 38. Qf4+ Kg7 39. Qg5+ Kf7 40. Qf4+ Ke6 41. Qd6+ Kf7 42. Qf4+ $11) 33. Ne2 Qxd3+ 34. Ke1 Rg5 (34... Qxf3 $2 35. Nxg3 hxg3 36. Qg2 $19) 35. f4 {[#]} (35. Qf2 $142 Ng6 36. Rd2) 35... Rg3 $1 {[%mdl 512]} 36. fxe5 (36. Nxg3 hxg3) 36... Qxe4 37. Nf2 Qe3 38. Ng4 {[#]} Qa3 $1 {[%mdl 512] ( -> ...Qa1+)} 39. Rd2 Bxe2 40. Rxe2 Qc1+ 41. Kf2 Qf4+ 42. Ke1 Qc1+ 43. Kf2 d3 {Precision: White = 30%, Black = 51%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Sasikiran, Krishnan"]
[Black "Lei, Tingjie"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2688"]
[BlackElo "2514"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,65,32,55,6,6,7,12,3,7,5,9,7,12,0,0,2,16,27,17,-25,-2,-13,44,33,24,-35,-17,-12,-10,-31,-31,-56,-24,-62,-52,-97,-94,-75,-75,-85,-59,-100,-27,-27,-18,-27,-16,-10,0,-16,0,-17,-18,-25]} 1. e4 c6 {[%cal Bc7c6,Bc6c5][%mdl 32]} 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. Be3 Qb6 7. Nc3 Nc6 8. Bb5 {B12: Caro-Kann: Advance Variation} c4 9. Nh4 Bg6 10. O-O Bb4 11. Bxc6+ $146 ({Find the theoretical novelty and annotate with similar games:} 11. Bxc4 Bxc3 12. bxc3 dxc4 13. d5 Qc7 14. dxc6 Qxc6 15. Nf3 Ne7 {½-½ (29) Gashimov,V (2759)-Vallejo Pons,F (2705) Linares 2010}) 11... Qxc6 12. Ne2 Bh5 13. f3 Be7 14. Qe1 f6 (14... Bg6 $5) 15. Qg3 Bf8 16. exf6 (16. Qh3 $5 {[%cal Re2f4]}) 16... Nxf6 17. Rae1 Rg8 ({Better is} 17... O-O-O $11) 18. Bg5 $1 $14 {[%cal Rg5f6]} Bf7 19. Qh3 (19. f4 $1 $11) 19... h6 20. Bxf6 $1 gxf6 21. f4 (21. Nf4 $5 {[%cal Rf4e6]} Kd7 22. g3 $11) 21... O-O-O $36 {[%mdl 2048] White is under pressure.} 22. f5 e5 $1 23. Ng6 Bd6 24. Qh4 Bxg6 25. fxg6 Rxg6 26. Rxf6 Rxf6 27. Qxf6 exd4 ({Black should try} 27... Qb6 $17 28. c3 Qxb2 29. Qf5+ Kb8) 28. Qf5+ $11 Qd7 29. Nxd4 Bc5 30. Qe5 {The position is equal.} Qc7 {[#] Strongly threatening ...Qxe5.} 31. Qf5+ Qd7 {( -> ...Qxf5)} (31... Kb8 $5 {[%cal Rc5d4]} 32. c3 Qb6 $11) 32. Qe5 Qd6 {Threatens to win with ...Qxe5.} 33. Qf5+ {Precision: White = 47%, Black = 49%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Nabaty, Tamir"]
[Black "Zeng, Chongsheng"]
[Result "1-0"]
[ECO "E70"]
[WhiteElo "2654"]
[BlackElo "2537"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,147,45,41,37,47,32,54,53,58,61,57,55,58,45,53,39,46,43,49,40,38,38,35,39,28,7,0,0,0,-8,11,-6,-7,-29,-12,-37,-31,-44,0,-22,-25,-51,0,-33,-37,-186,-82,-161,-132,-132,-132,-131,-112,-137,-132,-150,-141,-132,-110,-143,-95,-95,-96,-232,-111,-142,-84,-234,-227,-234,-234,-233,-239,-235,-135,-126,-119,-96,-94,-355,-354,-223,0,0,0,0,0,0,0,0,418,382,393,389,389,361,364,356,342,274,261,362,356,0,0,0,0,0,0,0,0,0,0,0,0,0,20,0,191,0,12,0,0,0,0,51,61,0,0,0,475,433,12849,12850]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bd3 O-O 6. Nge2 c5 7. d5 e6 8. O-O Na6 {LiveBook: 21 Games} 9. Ng3 {E70: King's Indian: Miscellaneous lines with 4 e4, including 5 Nge2 and 5 Bd3 0-0 6 Nge2} (9. f3 Nc7 10. a4 b6 11. Bg5 a6 12. Qd2 exd5 13. exd5 Qd7 14. Ng3 Rb8 15. Rae1 Kh8 16. Bh6 Nfe8 17. Re2 Bd4+ {1-0 (32) Balog,I (2559)-Balla,T (2338) Arad 2016}) 9... Nc7 10. a4 e5 11. Bg5 $146 {White is slightly better.} ({Predecessor:} 11. f4 exf4 12. Bxf4 Ng4 13. Qd2 Bd4+ 14. Kh1 Nxh2 15. Bg5 Nxf1 16. Bxd8 Nxg3+ 17. Kh2 Be5 {0-1 (17) Silva,A (2210)-Silva,F (2335) Lisbon 1995}) 11... h6 12. Bd2 h5 13. Bg5 Qd7 14. Qd2 Na6 15. Rae1 Nb4 16. Bb1 Nh7 17. Bh6 Qe7 18. Bxg7 Kxg7 19. f4 Bd7 20. f5 {Nxh5+! is the strong threat.} Qg5 21. Re3 (21. f6+ $5 Kg8 22. Qxg5 Nxg5 23. h4 $11) 21... Nf6 22. h3 Qh6 (22... h4 $5 {[%cal Rh4g3]} 23. Nge2 Rg8 $11) 23. Nge2 h4 24. Nc1 Nh5 25. Nd3 Nxd3 26. Bxd3 Nf4 27. Kh2 Rg8 28. Ne2 Nxe2 (28... Bxa4 29. Nxf4 exf4 30. fxg6 $3 $18 {[%mdl 512]}) (28... Nh5 $1 $15) 29. f6+ Kh7 30. Qxe2 (30. Bxe2 $15 Bxa4 31. Bg4) 30... Bxa4 (30... g5 $1 $19 {and Black stays clearly on top.} 31. Qe1 g4 32. hxg4 Rxg4) 31. g3 (31. Qf2 $17 {keeps fighting.}) 31... Bd7 32. Qf2 g5 33. g4 Qf8 34. Ra1 Qd8 35. Bc2 a6 36. Rf3 Qb6 37. Ba4 Bc8 38. Qd2 Qc7 39. b4 (39. Rf2 $17 {was called for.}) 39... Kg6 (39... cxb4 $19 40. Qxb4 b5 $1 {[%mdl 512]}) 40. Rb1 Rb8 (40... cxb4 $142 $1 41. Qxb4 b5 $1 {[%mdl 512]} 42. cxb5 axb5) 41. Rfb3 (41. bxc5 $17 Qxc5 42. Rc1) 41... cxb4 $19 ({Worse is} 41... Kxf6 42. Rf1+ Kg6 43. Qf2 $11) 42. Rxb4 Bd7 43. Bxd7 Qxd7 44. Rb6 {[#]} Rgc8 (44... Qc7 $1 $19 45. R6b4 Qc5) 45. Rf1 $17 {[#]} Kh6 $1 ({Not} 45... Rxc4 $2 46. Rf5 $18) 46. Rf5 Rg8 47. Rb1 $2 {[%mdl 8192]} (47. c5 $17) 47... Rbc8 $19 48. Rbf1 Rxc4 $2 {[#]} (48... Qd8 $19 49. Rc1 Qb6) 49. Rxg5 $3 $40 {[%mdl 640] White mounts an attack.} Rxg5 50. Rf5 {[#]} Rc2 $1 {[%cal Rc2d2]} 51. Qxc2 Rxf5 52. gxf5 {[%mdl 4096] Endgame Threatening mate with Qg2. KQ-KQ} Kg5 $2 {[%mdl 8192]} (52... Qd8 $11 {and Black has nothing to worry.} 53. Qd2+ Kh5 54. Qe2+ Kh6 55. Qd2+ Kh7) 53. Qd2+ $18 Kxf6 54. Qh6+ Ke7 55. Qxh4+ f6 56. Qh7+ Kd8 57. Qh8+ Kc7 58. Qxf6 a5 59. Qg6 $2 (59. Qg5 $18) 59... a4 $11 60. f6 {Strongly threatening f7.} a3 61. f7 a2 $1 62. f8=Q {White threatens Qg1 and mate.} a1=Q 63. Qff5 Qb2+ 64. Kg3 {next Qxd7+ is good for White.} Qa3+ 65. Kg4 {Black must now prevent Qxd7+.} Qb5 66. Kg5 {aiming for Kf6.} Kb6 $2 (66... Qg3+ $11 67. Kf6 Qxg6+ 68. Qxg6 Qd7) 67. Qxe5 $2 ({Less strong is} 67. Qf2+ Ka6 $14) (67. Kf6 $18) 67... Qe3+ 68. Qf4 (68. Kh4 $5 {[%cal Rg6d6]} Qf2+ 69. Qgg3 Qxg3+ 70. Qxg3 $16) 68... Qxf4+ 69. Kxf4 {KQ-KQ} Qf1+ 70. Kg5 Kc5 $1 71. Qf5 ({Better is} 71. h4 $14) 71... Qg2+ 72. Kf6 b5 $2 {[%mdl 8192]} (72... Qg3 $1 $11) 73. e5 $18 {[%cal Be4e5,Be5e6][%mdl 32] Threatens to win with e6.} Qxd5 (73... Qg8 $142 74. Qf2+ Kc4) 74. e6 {Precision: White = 33%, Black = 56%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Bogner, Sebastian"]
[Black "Valsecchi, Alessio"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2600"]
[BlackElo "2493"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,67,10,22,14,22,19,23,12,16,18,24,24,25,22,26,19,26,25,27,22,68,60,62,48,59,60,60,28,26,50,45,31,43,34,53,57,164,174,125,72,234,205,236,205,261,271,254,231,636,635,1510,1547,669,1462,1480,1441,1246,1227]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 a6 7. Re1 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} Ba7 (7... b5 $5 {[%cal Rb5c4]} 8. Bd5 Nxd5 9. exd5 Ne7 $11) 8. a4 h6 (8... O-O 9. h3 Ne7 10. Nbd2 Ng6 11. Nf1 c6 12. Bb3 d5 13. Ng3 Be6 14. exd5 Nxd5 15. d4 exd4 16. Nxd4 Qc7 17. Bxd5 Bxd5 18. Ndf5 {0-1 (29) Harikrishna,P (2737)-Bacrot,E (2715) Biel 2017}) 9. Na3 {White has an edge.} O-O 10. Nc2 Re8 11. Be3 Be6 12. Bxa7 Rxa7 13. Bxe6 Rxe6 14. Ne3 d5 $146 ({Predecessor:} 14... Ra8 15. b4 d5 {½-½ (30) Skripchenko,A (2455)-Khademalsharieh,S (2435) Khanty-Mansiysk 2016}) 15. Qc2 dxe4 16. dxe4 Ra8 17. a5 Ne7 18. Rad1 Qe8 19. Nd5 Nexd5 20. exd5 Re7 21. c4 e4 22. Nd4 $36 {[%mdl 2048] White has the initiative.} Qd7 23. Qb3 Rae8 (23... Ree8 $14) 24. Qxb7 $18 {Hoping for Nc6.} e3 {And now ...exf2+ would win.} 25. fxe3 ({White should play} 25. f3) 25... Ng4 $2 {[#]} (25... Rxe3 $16 26. Rf1 (26. Rxe3 Rxe3 27. Rf1 Qg4 $14) 26... Ne4) 26. Qc6 $1 (26. Qxa6 Nxe3 27. Rd2 Ng4 $11) 26... Qd8 27. e4 ({But not} 27. Qxa6 $6 Nxe3 28. Nc6 Nxd1 $16) 27... Rxe4 28. Rxe4 Rxe4 29. d6 $1 ({Weaker is} 29. Qxa6 Qe7 $11) 29... Re3 $2 (29... Rxd4 30. Rxd4 Qh4 31. Qe8+ Kh7 32. Qe4+ (32. Qxf7 Qxh2+ 33. Kf1 Qh1+ 34. Ke2 Qxg2+ 35. Ke1 Qg1+ 36. Qf1 Qe3+ 37. Qe2 Qg1+ 38. Qf1 Qg3+ 39. Kd2 Qe3+ 40. Kc2 Qxd4 $11) 32... g6) 30. Nf5 {White is clearly winning.} Qf6 31. Nxe3 Qf2+ 32. Kh1 {Qe8+ is the strong threat.} Qxe3 33. Qa8+ Kh7 {[#]} 34. Qf3 $1 {Precision: White = 78%, Black = 37%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Kryakvin, Dmitry"]
[Black "Shoker, Samy"]
[Result "1/2-1/2"]
[ECO "E73"]
[WhiteElo "2583"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,60,84,86,118,98,74,56,65,58,49,43,47,48,82,74,77,65,62,41,95,33,29,52,62,42,33,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d6 2. c4 Nf6 3. Nc3 g6 4. e4 Bg7 5. Be2 O-O 6. Bg5 h6 7. Be3 c5 8. d5 b5 9. cxb5 a6 10. a4 Qa5 11. Bd2 Qb4 {E74: King's Indian: Averbakh Variation: 6...c5} (11... axb5 12. Bxb5 Ba6 13. Nge2 Nbd7 14. O-O Ne5 15. b3 Qb6 16. Qc2 Rfb8 17. h3 Ne8 18. f4 Bxb5 19. Nxb5 {1-0 (40) Kryakvin,D (2560)-Belyakov,B (2470) Sochi 2017}) 12. Qc2 axb5 13. Bxb5 Ba6 {White is slightly better.} 14. f3 {Black must now prevent Nce2.} c4 15. Nge2 Nfd7 $146 ({Predecessor:} 15... Qc5 16. Qc1 Bxb5 17. Nxb5 Nbd7 18. Bc3 Ne5 19. Bxe5 dxe5 {1-0 (62) Melas,R (2108)-Sidi Mbareck,M (1947) Istanbul 2012}) 16. O-O Qc5+ 17. Kh1 Ne5 18. Nf4 Nbd7 19. Rab1 Rfc8 {[#]} ({Black should play} 19... Rfb8 $14) 20. Bxa6 ({White should try} 20. Bxd7 $1 $16 Nxd7 21. Qc1) 20... Rxa6 $14 21. Nce2 h5 22. Bc3 (22. a5 $5) 22... Qe3 23. Ra1 (23. Nxh5 $5 gxh5 24. Ng3 $11) 23... Nc5 {The position is equal.} 24. Ra3 {[#] And now Bd4 would win.} Ned3 {Hoping for ...Nf2+.} 25. Bxg7 Kxg7 26. g3 Nxe4 27. fxe4 Qxe4+ 28. Kg1 Qe3+ 29. Kh1 Qe4+ 30. Kg1 Qe3+ {Precision: White = 52%, Black = 67%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Stocek, Jiri"]
[Black "Fedorovsky, Michael"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2583"]
[BlackElo "2467"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,73,0,0,0,0,0,77,77,137,86,309,285,270,266,244,210,210,192,230,218,205,202,205,202,281,182,194,159,207,222,260,258,291,194,281,277,345,343,383,402,394,395,741,375,864,672,1022,414,2406,2441,1545,1102]} 1. c4 c5 2. Nf3 Nc6 3. Nc3 g6 4. e3 Nf6 5. d4 cxd4 6. exd4 d5 7. cxd5 Nxd5 8. Bc4 Nb6 9. Bb3 Bg7 10. d5 Na5 11. O-O O-O 12. Re1 Bg4 13. h3 {D94: Grünfeld: 4 Nf3 Bg7 5 e3} Bxf3 14. Qxf3 Rc8 (14... Re8 $11) (14... Re8 15. Bg5 Nxb3 {½-½ (15) Levin,E (2505)-Alekseev,E (2636) St Petersburg 2016}) 15. Bg5 $1 $16 {[%cal Rg5e7] White is better.} Rc7 $146 (15... Bf6 $142 16. Bxf6 exf6) ({Predecessor:} 15... Bf6 16. Bxf6 exf6 17. Rad1 Rc7 18. d6 Rd7 19. Ne4 f5 20. Nc5 Rxd6 21. Rxd6 Qxd6 22. Nxb7 {½-½ (41) Szabo,B (2254)-Krutti,V (2347) Hungary 2016}) 16. Nb5 (16. Rad1 $142 {Strongly threatening d6!} h6 17. d6 $1 {[%mdl 512]} hxg5 18. dxc7 Qxc7 19. Qe3) 16... h6 $2 (16... Nxb3 $16 {keeps fighting.} 17. Qxb3 (17. axb3 Rd7 $16) 17... Rd7) 17. d6 $18 ({Don't do} 17. Nxc7 $6 hxg5 18. Nb5 Bxb2 $18) 17... hxg5 18. dxc7 Qd7 19. Nxa7 Qxc7 20. Nb5 {[%cal Ba7b5,Bb5c3,Bc3e4][%mdl 32]} Qc5 21. Nc3 e6 22. Rac1 Nxb3 23. axb3 Qb4 24. Ne4 Nd5 {[%cal Bb6d5,Bd5f4,Bf4d3][%mdl 32]} 25. Nxg5 Bh6 {[#]} 26. Qg3 $1 Nf4 27. Rcd1 Rc8 28. Kh1 Bxg5 (28... Nh5 {was necessary.} 29. Qe5 Qxb3) 29. Qxg5 Nd3 30. Rf1 Qxb3 31. Rd2 e5 32. Qe3 Rd8 $2 (32... Nc5 33. Qxe5 Qe6) 33. f3 f5 $2 (33... Rd4 34. Ra1 Qd5) 34. Qg5 Rd6 {[#]} 35. Qe7 (35. Rc1 $142 $1 {[%mdl 512] Black must now prevent Rc8+.} Qe6 (35... Nxc1 36. Rxd6) 36. Rc7) 35... Qb6 (35... Rd4 $142 36. Ra1 Qf7 37. Ra8+ Kg7) 36. Ra1 {Threatening mate with Ra8+.} Qd8 37. Qxb7 {Precision: White = 61%, Black = 23%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Neiksans, Arturs"]
[Black "Gluhovsky, Mark"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2582"]
[BlackElo "2281"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,129,18,15,32,22,34,17,35,14,12,14,18,0,0,2,0,0,-9,-13,-13,-25,16,20,11,17,14,34,3,0,0,-43,-35,-60,0,-18,0,0,19,0,0,0,0,0,158,144,136,100,137,137,125,137,145,140,196,196,202,210,236,233,258,175,140,110,244,237,281,235,256,241,268,275,297,289,344,348,396,281,1054,193,220,202,198,193,399,399,390,378,375,378,661,655,637,635,602,591,916,517,535,535,506,453,915,903,837,839,801,779,629,586,1239,985,1152,853,1404,1365,4133,3868,2610,2177,9829,8246]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Nc3 e5 6. Bc4 {LiveBook: 9 Games. B31: Sicilian: 2...Nc6 3 Bb5 g6} (6. a3 Nge7 7. b4 d6 8. bxc5 dxc5 9. d3 O-O 10. Bc4 Nd4 11. h3 Be6 12. Nd2 Qd7 13. a4 b6 14. Bxe6 Qxe6 {½-½ (32) Wei,Y (2737)-Yu,Y (2734) Shenzhen 2015}) 6... h6 7. d3 d6 8. h3 {White is slightly better.} Nf6 9. Nd5 $146 ({Predecessor:} 9. a3 O-O 10. Rb1 a5 11. a4 Qe7 12. Re1 Nb4 {½-½ (30) Zetocha,C (2418)-Pal,P (2239) Slovakia 2002}) 9... O-O 10. Nxf6+ Qxf6 11. Nh2 Kh7 12. c3 Qe7 13. Be3 f5 14. exf5 Bxf5 15. Nf3 d5 16. Bxd5 Rad8 17. Bxc6 bxc6 18. Qa4 Bxd3 19. Nd2 e4 20. Nb3 c4 21. Na5 Rd5 (21... Rb8 $15) 22. Nxc4 (22. Nxc6 Qd7 $19) 22... Rh5 23. Nd2 Qe6 (23... Bb5 $5 {[%cal Rb5a4]} 24. Qxa7 Qxa7 25. Bxa7 Bxf1 26. Kxf1 Rb5 $11) 24. Rfe1 (24. Bxa7 Ra8 $17) (24. Qb3 $5 {[%cal Rb3e6]} Qe7 25. Rfd1 $11) 24... Rxh3 25. Bd4 $1 {[%cal Rd4g7] Bxg7 is the strong threat.} (25. Qxa7 Rh5 $17) 25... Rh4 {aiming for ...Qf5.} 26. Bxg7 $1 Rg4 $2 {[#]} (26... Qd6 $1 $11 27. g3 Rxf2) 27. Re3 $1 $16 (27. Bxf8 Rxg2+ 28. Kxg2 Qg4+ 29. Kh2 Qh5+ 30. Kg1 Qg4+ 31. Kh2 Qh5+ 32. Kg3 Qg5+ 33. Kh3 Qf5+ 34. Kg3 Qg5+ 35. Kh3 Qf5+ 36. Kg3 Qg5+ $11) 27... Kxg7 28. Rae1 $36 {[%mdl 2048] Keeping Black busy.} Qf5 {[#]} 29. Qd4+ $1 ({Much worse is} 29. Qxa7+ $6 Kg8 $11) (29. Nxe4 $6 Rxe4 30. Rxe4 Qxf2+ 31. Kh2 Bxe4 $11) 29... Kg8 30. Nxe4 Bxe4 31. Rxe4 Rxe4 (31... c5 $16 {keeps fighting.} 32. Qc4+ Kh8 33. Rxg4 Qxf2+ 34. Kh2 Qxe1 35. Qxc5 Rd8) 32. Rxe4 {[%mdl 4096] Endgame KQR-KQR} ({Stronger than} 32. Qxe4 Qxf2+ 33. Kh2 Kg7 $11) 32... c5 33. Qe3 Rf7 34. g3 h5 35. Kg2 Qd5 36. c4 Qc6 (36... Qb7 $16 {might work better.}) 37. Kg1 $18 {Black must now prevent Re6.} Qd6 38. Qe2 {And now Re6 would win.} Kh7 39. b3 Kg7 40. Re5 Qd4 41. Rd5 Qa1+ 42. Kg2 Rc7 43. Qe8 Rf7 $2 (43... Qf6 44. Qe3 Qc6 45. Qe5+ Kf7) 44. Qe5+ $2 (44. Rd8 {[%csl Gd8][%cal Re8h8]} Rxf2+ 45. Kxf2 Qb2+ 46. Kg1 Qb1+ 47. Kg2 Qc2+ 48. Kf1 Qb1+ 49. Ke2 Qb2+ 50. Rd2) 44... Qxe5 45. Rxe5 {KR-KR} Rc7 46. Re6 Kh6 $2 (46... g5 {was worth a try.} 47. f4 Rd7) 47. f4 Rd7 48. Kh3 Rd2 49. Ra6 Rf2 $2 (49... Rd7 50. f5 Kg5 51. Rxg6+ Kxf5) 50. Rxa7 {White is clearly winning.} Rb2 51. Ra5 Kg7 52. Rxc5 Rxa2 53. Rc6 Rb2 54. Rb6 Rc2 55. g4 hxg4+ (55... Kf7 $142 56. f5 hxg4+ 57. Kxg4 gxf5+ 58. Kxf5 Ke7) 56. Kxg4 Kf7 57. Rb5 Rc1 58. c5 Rg1+ 59. Kf3 Rf1+ 60. Ke3 Re1+ 61. Kd3 Rd1+ 62. Ke4 Re1+ 63. Kd5 Rd1+ 64. Kc6 Rd4 65. Kb7 {Precision: White = 65%, Black = 30%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Kulaots, Kaido"]
[Black "Thybo, Jesper Sondergaard"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2577"]
[BlackElo "2464"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,59,2,0,0,0,17,2,5,7,0,-14,1,-11,-6,0,-4,0,-14,-20,16,-39,12,10,79,5,52,0,44,47,28,23,104,107,110,96,132,113,779,800,635,573,29995,29996,29996,29997]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. O-O d6 6. c3 a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} (6... Be6 7. Bxe6 fxe6 8. b4 Bb6 9. Nbd2 a6 10. a4 Qd7 11. Ba3 Ba7 12. b5 Na5 13. Bb4 Bb6 14. Rb1 O-O {1-0 (39) Fedoseev,V (2726)-Wang,Y (2699) Dortmund 2017}) 7. a4 h6 8. Na3 O-O 9. Re1 {LiveBook: 3 Games} Ne7 10. Nc2 Ng6 11. Be3 Bxe3 12. Nxe3 c6 13. Bb3 Re8 14. g3 $146 ({Predecessor:} 14. Bc2 d5 15. Nf5 Qc7 {0-1 (46) Mammadova,G (2364)-Muzychuk,A (2561) Novi Sad 2016}) 14... Bh3 15. Nd2 d5 16. exd5 cxd5 17. d4 e4 18. Qe2 (18. f3 $11) 18... Qd6 (18... Ra6 $15) 19. f3 h5 (19... exf3 $11 {remains equal.} 20. Qxf3 Be6) 20. Qf2 ({White should play} 20. fxe4 $16 {Strongly threatening e5.} dxe4 21. Qb5) 20... Rad8 21. Re2 ({Better is} 21. fxe4 $14 dxe4 22. Bc4) 21... h4 22. fxe4 dxe4 23. Rae1 hxg3 (23... Qd7 $11) 24. hxg3 $16 Re7 25. Qh2 $36 {[%mdl 2048] White is really pushing.} Be6 26. Rf1 {And now Rxf6! would win.} Rde8 $2 {[%mdl 8192] [#]} (26... Bxb3 $16 27. Nxb3 Qc6) 27. Rxf6 $1 $18 {[%mdl 512]} gxf6 28. Nxe4 {Threatening mate with Qh6.} Qd8 {and the idea ...Kg7 leaves Black hopeful.} 29. Qh6 {[%cal Re4f6]} Rc7 {[#]} 30. Nf5 $1 {[%mdl 512] Precision: White = 51%, Black = 34%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Alekseenko, Kirill"]
[Black "Hambleton, Aman"]
[Result "1/2-1/2"]
[ECO "E15"]
[WhiteElo "2575"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "152"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,152,13,0,0,-34,12,12,8,13,16,-15,0,0,0,-14,-10,-17,-25,-12,-6,-1,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-17,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,13,0,0,0,0,0,0,0,0,-108,-119,-67,-106,-107,-33,-44,0,-125,0,-44,-44,-43,11,11,11,12,23,23,23,23,23,23,23,8,8,8,8,8,18,18,18,8,8,8,8,8,19,25,26,26,35,33,41,18,179,179,209,209,151,48,477,477,477,477,477,0,0,0,0,0,0,-8,-8]} 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Ba6 5. Qc2 Bb7 6. Bg2 c5 7. d5 {E15: Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations} exd5 8. cxd5 Nxd5 9. O-O Be7 10. Rd1 Nc6 11. Qf5 {LiveBook: 58 Games} (11. Rxd5 $2 Nb4 $19) (11. Qa4 $5 {[%cal Rd1d5]} Nf6 12. e4 $11) 11... Nf6 12. Nc3 d5 $146 ({Predecessor:} 12... O-O 13. e4 g6 14. Qh3 h5 15. Nd5 Nxd5 16. Rxd5 Nd4 17. Rxd7 Bc8 18. Rxd8 Rxd8 19. Nxd4 Bxh3 20. Bxh3 Rxd4 {0-1 (20) Ramirez,A (2554)-Gareev,T (2663) Las Vegas 2012}) 13. Nxd5 Nxd5 14. Ng5 Bxg5 $1 15. Rxd5 (15. Bxd5 {with more complications.} O-O 16. Bxg5 Qc8 17. Qxc8 Raxc8 18. Rd2) 15... Qc8 16. Qxc8+ Rxc8 17. Rxg5 O-O 18. Bd2 f6 19. Rh5 Rcd8 20. Bc3 g6 21. Rh4 Rd7 22. Rf4 f5 23. h4 Nd8 24. Bxb7 Nxb7 25. g4 Nd8 26. gxf5 Rxf5 27. Rxf5 gxf5 $11 {[%mdl 4096] Endgame KRB-KRN} 28. e3 b5 29. a3 Kf7 30. Kf1 Nc6 31. Ke2 a5 32. Bd2 a4 33. Rg1 Ne5 34. Bc3 Nc4 35. Rg5 Ke6 36. e4 fxe4 37. Rxc5 Rd5 38. Rc6+ Rd6 39. Rc8 h5 40. Rf8 Rd3 41. Rf4 Rh3 42. Rxe4+ Kd5 43. Rd4+ Kc6 $1 44. Kf1 {With the idea Kg2.} Nxa3 $1 45. Rd8 (45. Kg2 $11 Rxc3 46. bxc3) 45... Nc4 $17 46. Rc8+ Kd5 47. Rd8+ Kc5 ({Black should try} 47... Ke6 $17 48. Re8+ Kd7) 48. Rc8+ $15 Kd5 49. Rb8 (49. Rd8+ $11 Kc6 50. Rc8+ Kd7 51. Rb8) 49... Kc6 ({Don't play} 49... Rxh4 $6 50. Rxb5+ Kc6 51. Rb8 $11) (49... Nd6 $17 50. Bg7 Kc6) 50. Rc8+ Kd7 51. Rc5 Nd6 (51... a3 $15 52. bxa3 Rxc3 53. Rxb5 Ke6 54. Rxh5 Rxa3) 52. Rxh5 $11 a3 53. Kg2 a2 54. Rh7+ Ke6 55. Ra7 Rxh4 56. Rxa2 Ra4 57. Rxa4 bxa4 {KB-KN} 58. Kf3 Kd5 59. Ke3 Ne4 (59... a3 $5) 60. Bb4 Nf6 61. Ba3 (61. Be7 $5 {[%cal Re7f6]} Ng4+ 62. Ke2 $16) 61... Ng4+ 62. Ke2 Ne5 63. f4 Nc6 (63... Nc4 {looks sharper.} 64. Kf3 Ke6 65. Ke4 Nd2+ 66. Kd3 Nf1) 64. Kd3 Nd4 65. Bb4 Nf5 66. Bc3 Nd6 67. Bd4 (67. Be5 $5 {[%cal Re5d6]} a3 68. b3 $16 (68. bxa3 Nc4 $11)) 67... Nb5 $2 (67... Nc4 $11) 68. Be5 $18 Na7 {[#]} 69. Kc3 $1 Nc6 70. Bc7 (70. Bf6 $16) 70... Nd4 $2 {[%mdl 8192] [#]} ({Black should play} 70... Kc5 $1 $14) 71. Kb4 $1 a3 72. bxa3 Ne6 73. Bb6 $2 (73. Be5 $18 {And now Kb5 would win.} Nxf4 74. Bb8 (74. Bxf4 Kc6 $18)) 73... Nxf4 $11 {The position is equal.} 74. Kb5 Ne2 75. Ba5 Nd4+ 76. Kb6 Kc4 {Precision: White = 64%, Black = 55%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Vorobiov, Evgeny E"]
[Black "Hansen, Mads"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2569"]
[BlackElo "2410"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,51,22,23,23,12,14,9,30,16,34,12,22,21,35,36,71,60,73,0,0,-29,32,0,0,-32,90,22,29,33,584,586,547,124,728,721,691,709,686,687]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. b3 c5 6. Bb2 {D30: Queen's Gambit Declined: Systems without Nc3} (6. cxd5 Nxd5 7. Bb2 cxd4 8. Nxd4 e5 9. Nf3 Nc6 10. Bc4 Bb4+ 11. Nbd2 Nb6 12. Bb5 Qd5 13. Bxc6+ bxc6 14. Bxe5 Bg4 15. Bc7 O-O 16. a3 Bxf3 17. axb4 Bxd1 {0-1 (17) So,W (2810)-Duda,J (2707) Leon 2017}) 6... cxd4 7. exd4 Nc6 8. Bd3 {LiveBook: 8 Games. The position is equal.} Be7 9. O-O O-O 10. Nc3 b6 11. cxd5 $146 ({Predecessor:} 11. Re1 Bb7 12. Rc1 Rc8 13. cxd5 Nxd5 14. Nxd5 Qxd5 {½-½ (25) Helbich,J (2539)-Fernandez Vicente,C (2467) ICCF email 2010}) 11... exd5 12. Ne5 Nxd4 {[#]} 13. Bxh7+ $1 {[%mdl 512]} Kxh7 (13... Nxh7 14. Qxd4) 14. Qxd4 {Threatens to win with Nc6.} Bb7 15. Rad1 {And now Rd3 would win.} Kg8 16. Rd3 (16. Qf4 $16) 16... Bc5 $1 $11 {[%cal Rc5d4]} 17. Qh4 {Rh3 would kill now.} Ne4 ({Black should play} 17... Nd7 $11 18. Qxd8 Rfxd8 19. Nxd7 Rxd7) 18. Qh5 {Threatening mate with Rh3.} (18. Qh3 $5 {[%cal Rc3e4]} Nxc3 19. Bxc3 $11 (19. Rxc3 Bd4 $11)) 18... Nf6 19. Qg5 {Black must now prevent Rh3.} Nh7 {[#]} (19... Nd7 $15 {stays ahead.} 20. Qxd8 Rfxd8 21. Nxd7 Rxd7) 20. Qf5 $40 {[%mdl 128] White attacks.} ({Better is} 20. Qg3 $1 $16) 20... Qf6 21. Qh5 {Strongly threatening Rh3.} g6 $2 {[%mdl 8192]} (21... Qg5 $1 $14 22. Qxg5 Nxg5) 22. Rg3 $18 Kh8 {[#]} 23. Nxd5 $2 (23. Nxg6+ $1 $18 {[%mdl 512]} fxg6 24. Rxg6) 23... Bxd5 $4 {[%mdl 8192] [#]} (23... gxh5 $16 24. Nxf6 Nxf6) 24. Nxg6+ $1 {[%mdl 512] White is clearly winning.} fxg6 25. Bxf6+ Rxf6 26. Qxd5 {Precision: White = 38%, Black = 28%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Ghosh, Diptayan"]
[Black "Yankelevich, Lev"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2562"]
[BlackElo "2447"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,41,24,22,27,34,24,14,25,17,50,49,41,21,26,46,60,62,80,88,81,94,94,59,50,11]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 e5 8. dxe5 dxe5 9. Bg5 Be6 10. Nd2 Qc8 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6} 11. Nd5 Nd7 12. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} h6 {The position is equal.} 13. Be3 {[#]} Kh7 $146 ({Predecessor:} 13... Re8 14. Rc1 Nd4 15. Bxd4 exd4 16. Nb3 c5 17. bxc5 Nxc5 18. Nxd4 {1-0 (41) Banusz,T (2613)-Radjabov,T (2722) Monzon 2016}) 14. Rc1 f5 15. b5 Nd8 16. Nb3 Re8 17. Bd2 c5 18. e4 Nf7 19. exf5 gxf5 20. Be3 b6 21. Re1 {Precision: White = 73%, Black = 64%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Boruchovsky, Avital"]
[Black "Krivonosov, Oleg"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2556"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,57,21,10,23,22,27,28,29,14,25,0,0,0,0,-10,-8,-2,0,-52,0,0,0,0,0,-29,0,0,0,0,0,0,79,85,119,120,198,198,191,136,179,190]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O a6 7. a4 h6 8. Na3 {[%cal Bb1a3,Ba3c2,Bc2e3,Be3c4][%mdl 32] C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} (8. Re1 O-O 9. h3 Re8 10. Nbd2 Be6 11. Bxe6 Rxe6 12. b4 Ba7 13. Qc2 Qd7 14. Nf1 d5 15. Be3 Bxe3 16. Nxe3 {1-0 (41) Anand,V (2786)-So,W (2812) Leuven 2017}) 8... O-O 9. Nc2 Ba7 10. Be3 {LiveBook: 20 Games. The position is equal.} Re8 (10... Bb8 {with more complications.} 11. Re1 Ne7 12. d4 Nxe4 13. dxe5 d5) 11. Bxa7 Rxa7 12. Ne3 Be6 13. Re1 Ra8 {[#]} 14. a5 $146 ({Predecessor:} 14. Bxe6 Rxe6 {0-1 (91) Cornette,M (2599)-Karpov,A (2628) Cap d'Agde 2016}) 14... Bxc4 15. Nxc4 d5 16. exd5 Qxd5 17. Qb3 Rab8 18. h3 (18. Red1 $11) 18... e4 (18... Nh5 $15 19. Qa4 Nf4) 19. dxe4 $11 Rxe4 20. Rxe4 Nxe4 21. Rd1 (21. Ncd2 $5 {[%cal Rb3d5]} Qxb3 22. Nxb3 $11) 21... Qb5 (21... Nxa5 $5 {[%cal Rd5c4]} 22. Rxd5 Nxb3 $15) 22. Qxb5 axb5 23. Nce5 {Nxc6 is the strong threat.} Nxa5 24. Rd7 $1 f6 {[#]} (24... c6 $11) 25. Ng6 $1 $16 {[%mdl 1024] White has strong compensation.} Kh7 26. Nf4 {Black must now prevent Nh5.} Nc4 {[#]} (26... Nd6 $16) 27. Nh5 $1 $18 {White is clearly better.} ({Don't do} 27. Rxc7 $6 Ned6 $16) 27... Rg8 28. Nh4 (28. Rxc7 $18 {Threatens to win with Nh4.} Kh8 29. Re7 (29. Rxb7 Nxb2 30. Nh4 Nd1 $16)) 28... Ne5 ({Don't go for} 28... Nxb2 $2 29. f3 $18) 29. Rxc7 {Precision: White = 60%, Black = 48%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Sarana, Alexey"]
[Black "Abdumalik, Zhansaya"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "2540"]
[BlackElo "2423"]
[Annotator "TA"]
[PlyCount "123"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,123,45,40,21,67,70,68,68,96,76,74,79,87,64,61,62,69,77,82,72,98,40,42,26,18,0,12,-8,26,26,30,13,37,37,32,29,36,26,41,44,47,46,54,57,53,50,62,56,77,83,86,97,82,62,107,98,116,109,98,85,120,111,119,71,120,119,158,135,132,112,126,128,145,134,128,127,197,207,202,185,199,195,203,207,251,251,259,246,363,384,462,448,526,496,510,497,530,629,622,608,569,558,618,605,611,581,1139,1043,1110,1055,983,1008,29988,29989,29998,29999]} 1. d4 Nf6 2. c4 d6 3. Nc3 Bf5 4. Qb3 (4. f3 e5 5. e4 exd4 6. Qxd4 Be6 7. Qd2 c6 8. Bd3 Nbd7 9. Nge2 Ne5 10. b3 Nxd3+ 11. Qxd3 d5 12. cxd5 cxd5 13. exd5 Nxd5 14. Nxd5 Qxd5 15. Qxd5 Bxd5 {½-½ (37) Vitiugov,N (2726)-Rakhmanov,A (2667) Tallinn 2016}) 4... Qc8 5. g3 Nc6 6. Nf3 {A53: Old Indian Defence without Nf3} b6 $146 ({Predecessor:} 6... g6 7. d5 Nd8 8. Bg2 Bg7 9. O-O O-O 10. Re1 e5 11. e4 Bg4 {½-½ (24) Ksieski,Z (2412)-Bielczyk,J (2359) Suwalki 1999}) 7. Bg2 Na5 8. Qd1 {White is slightly better.} Bh3 9. O-O Bxg2 10. Kxg2 c5 11. Bg5 Nd7 12. b3 h6 13. Bd2 cxd4 14. Nxd4 Nc6 15. Nf3 (15. e3 $16) 15... g6 16. e4 Bg7 17. Rc1 Qb7 18. Qe2 Nde5 19. Nxe5 dxe5 20. Be3 (20. c5 $5) 20... Nd4 21. Bxd4 exd4 22. Nd5 {next c5 is good for White.} e6 23. Nf4 Bf8 24. Nd3 Ba3 25. Rc2 a5 26. Qf3 O-O 27. e5 Qd7 28. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Kg7 29. h5 g5 30. Qe4 Rac8 31. Rd1 Bc5 32. a4 Rc7 33. Ne1 f5 34. exf6+ $1 Rxf6 35. Nd3 Qe8 36. Qg4 Qc6+ 37. Kg1 Re7 38. Re2 Qf3 39. Qxf3 Rxf3 40. Kg2 Rf5 41. Re4 Rf8 42. Rde1 Rfe8 (42... Rf6 $16 {was worth a try.} 43. f3 Kh7) 43. Re5 $1 $18 Bd6 44. Rb5 Bc7 {[#]} 45. Kf3 $1 Rf8+ {[#]} 46. Ke4 $1 e5 47. Rc1 g4 48. c5 bxc5 (48... Re6 $142 49. cxb6 Bxb6 50. Rxe5 Ref6) 49. Rcxc5 Kf6 50. Rb7 Rff7 51. Ra7 Kg5 {If only Black now had time for ...Bb6....} 52. Nf4 Bd6 53. Rxe7 Rxe7 54. Rxa5 {[%mdl 4096] Endgame KRB-KRN} Rb7 55. Rd5 Bb8 56. Ne6+ Kxh5 57. Rb5 Rd7 58. Rxb8 d3 59. Rb5 d2 60. Nf8 {[%cal Rb5e5]} Rd4+ 61. Kxe5 {[%cal Re5d4]} Kg5 62. Ke6+ {Precision: White = 76%, Black = 34%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Schroeder, Jan-Christian"]
[Black "Wan, Yunguo"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2539"]
[BlackElo "2482"]
[Annotator "TA"]
[PlyCount "149"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,149,63,57,120,125,114,104,111,35,35,34,36,32,29,0,0,0,0,-12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,61,58,52,50,146,146,191,191,201,183,223,213,225,230,326,320,398,398,353,300,290,294,467,337,482,479,464,337,297,283,261,235,1797,1739,1589,1266,9560,8350,8335,7700,6569,6256,5920,4582,5361,0,5728,5608,2741,2279,12792,6191,29966,29965,12792,2041,12792,12792,29968,29968,29965,29962,29967,29969,29969,29970,29969,29970,29969,29972,29970,29971,29970,29971,29976,29976,29978,29979,29977,29978]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 {[%cal Bd4b5,Bb5a3,Ba3c2,Bc2e3][%mdl 32]} d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 O-O 12. Nc2 Rb8 13. h4 Be7 14. g3 {B33: Sicilian: Pelikan and Sveshnikov Variations} Be6 15. a3 {[%cal Ba2a3,Ba3a4][%mdl 32]} a5 (15... Qd7 16. Ncb4 Nxb4 17. axb4 Ra8 18. Bg2 Bd8 19. O-O Qc6 20. Ra3 Ra7 21. Ne3 Bb6 {½-½ (43) Dominguez Perez,L (2721)-Timofeev,A (2677) Havana 2009}) 16. Nce3 {LiveBook: 3 Games. White is slightly better.} Qd7 {[#]} (16... Na7 $14) 17. a4 $1 $16 b4 $146 ({Predecessor:} 17... bxa4 18. Qxa4 Rfc8 19. Bb5 Kf8 20. b4 Qb7 21. Bxc6 Rxc6 22. Qxa5 {1-0 (53) Poetz,F (2347)-Krebs,J (2229) Vienna 2010}) 18. Bb5 {Black must now prevent Bxc6.} Bd8 19. O-O (19. cxb4 $16 axb4 20. Qc1 Rxb5 21. axb5) 19... bxc3 $14 20. bxc3 Qc8 $1 21. Qd3 Ne7 22. Bc4 Nxd5 23. Bxd5 Bb6 24. Nf5 {aiming for Ne7+.} Qd7 25. Bxe6 fxe6 26. Qxd6 Qxd6 27. Nxd6 Rf3 {Hoping for ...Rxg3+.} 28. Kg2 Rbf8 {[%cal Rb6f2]} 29. Ra2 {Strongly threatening Nc4.} Rxc3 30. Rd1 Bd4 31. Rdd2 Rc6 32. Nb5 $36 {[%mdl 2048] Black is under pressure.} Rc4 33. Nd6 Rc6 34. Nb5 Rc4 35. Nd6 Rb4 ({Black should play} 35... Rc6 $11 36. Nb5) 36. Rdc2 $1 h5 37. Rc6 Rb3 (37... Rb1 $14) 38. Nb5 $16 Rf6 39. Nxd4 exd4 $18 {[%mdl 4096] Endgame KRR-KRR} 40. Rc5 g6 41. Rxa5 Rff3 42. e5 Ra3 (42... Rfc3 $142 43. Ra8+ Kg7) 43. Rd2 Rfd3 44. Rxd3 Rxd3 {KR-KR} 45. Ra6 Kf7 46. Rd6 Rd2 (46... Ke7 $142 47. Kf1 Rc3 48. Rxd4 Rc5) 47. Kf3 d3 (47... Ra2 {was worth a try.} 48. Rxd4 Kf8) 48. a5 Ra2 49. Rd7+ Kf8 50. Rxd3 Rxa5 51. Kf4 Ra7 $2 (51... Kg7 52. Rd7+ Kh6) 52. Kg5 Kg7 53. f3 Rf7 54. g4 Kh7 55. Ra3 Kg7 56. Rb3 Kh7 57. Rc3 Kg7 58. Rd3 Kh7 $1 59. Rb3 Kg7 60. Ra3 Kh7 61. Ra6 Rxf3 {[#]} 62. Ra7+ $1 Kg8 63. gxh5 (63. Kxg6 $142 hxg4 64. h5) 63... gxh5 64. Kxh5 Rf4 65. Kg5 {White mates.} Re4 66. Ra5 Kf7 67. h5 {[%cal Bh4h5,Bh5h6][%mdl 32]} Re1 68. Ra7+ Kg8 69. h6 Rg1+ 70. Kf6 Rh1 71. Ra8+ Kh7 72. Kxe6 Rxh6+ 73. Kf7 Rh2 74. e6 Rf2+ 75. Ke8 {Precision: White = 80%, Black = 41%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Vishnu Prasanna  V"]
[Black "Pershin, Denis"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "2538"]
[BlackElo "2353"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,46,0,12,0,21,0,-3,-9,13,13,13,14,14,14,27,0,0,-4,0,-11,-9,-15,-24,-35,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. Qc2 Be7 7. cxd5 Nxd5 8. Nxd5 {E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7} exd5 9. Bf4 c5 10. e3 O-O {LiveBook: 3 Games} 11. Be2 $146 ({Predecessor:} 11. Bd3 h6 12. O-O Nd7 13. Rac1 Nf6 14. Ne5 c4 15. Bf5 Bc8 {1-0 (50) Bocharov,D (2569)-Aroshidze,L (2401) Istanbul 2004}) 11... Ba6 12. O-O Bxe2 13. Qxe2 Nd7 {[%cal Bb8d7,Bd7f6,Bf6e4][%mdl 32]} 14. dxc5 bxc5 15. Rfd1 Nf6 16. Be5 Qb6 17. Rac1 (17. b4 $5) 17... Rac8 18. Qc2 (18. Bxf6 $5 Bxf6 19. Rxd5 $11) 18... Qe6 19. Qa4 a6 20. h3 Ne4 21. b4 Bf6 22. Bxf6 Qxf6 23. Qc2 Rfd8 {Precision: White = 53%, Black = 40%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Bailet, Pierre"]
[Black "Percivaldi, Martin"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "2536"]
[BlackElo "2407"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,96,12,8,25,16,12,19,37,33,48,33,64,26,39,14,16,20,16,17,43,41,44,46,43,48,41,40,40,39,39,47,47,42,39,49,50,38,36,42,35,34,73,31,42,14,17,12,31,0,48,8,6,0,48,17,45,9,39,24,35,23,31,14,25,19,30,5,7,4,6,0,26,22,16,0,264,302,287,258,267,267,5418,5722,29973,29974,29999]} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. Nxd4 Nf6 6. exd5 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5 Qxd5} a6 (6... Qxd5 7. Nb5 Qd8 8. Bd3 a6 9. Nc3 Nc6 10. O-O Ne5 11. Be2 b5 12. Nf3 Qxd1 13. Rxd1 Nc6 14. Bf4 Bb7 {0-1 (53) Vachier Lagrave,M (2796)-Caruana,F (2808) Paris 2017}) 7. Bc4 {[%cal Rd5e6] LiveBook: 4 Games} Nxd5 8. N2f3 {White has an edge.} Be7 9. O-O O-O $146 ({Predecessor:} 9... Bf6 10. Bb3 O-O 11. Qe2 Ne7 12. Rd1 Qc7 13. Ng5 e5 {½-½ (40) Balogh,C (2651)-Rozum,I (2505) Yerevan 2014}) 10. Qe2 Qd6 11. Rd1 Bf6 12. Bg5 (12. Nf5 $5 Qc5 13. Ng3 $16) 12... Nd7 13. Nf5 Qc7 14. Bxd5 {[#] Hoping for Ne7+.} exf5 15. c3 h6 16. Be3 Nb6 17. Bb3 Be6 18. Bxe6 fxe6 19. Bf4 Qf7 20. Ne5 Bxe5 21. Bxe5 Rad8 22. c4 Qe7 23. b3 Rxd1+ 24. Rxd1 {[#] Threatens to win with Bd6.} Rd8 $1 25. Re1 Nd7 26. Bc3 Nf6 27. f3 Kf7 28. h3 Qd6 29. Qe3 Rd7 30. a4 Qc6 31. Kf2 Qd6 32. Re2 Qc6 (32... f4 $5 {[%cal Rf4e3]} 33. Qe5 Qb6+ 34. c5 Qxb3 $11) 33. a5 Rd6 34. g4 fxg4 35. hxg4 Rd1 36. Re1 Rxe1 37. Qxe1 Nd7 38. Qe3 Qd6 39. Kg2 Qd1 40. b4 (40. Qd4 $5 {[%cal Rd4d1]} Qe2+ 41. Qf2 $14) 40... Qc2+ 41. Kg3 Qb1 42. Qd4 $36 {[%mdl 2048] White has some pressure.} Nf6 43. Qb6 Kg6 $2 {[%mdl 8192]} (43... Ne4+ $11 {and Black has nothing to worry.} 44. fxe4 Qd3+ 45. Kf2 Qc2+ 46. Kg1 Qxc3) 44. Qxe6 $18 Qg1+ 45. Kf4 {Bxf6 is the strong threat.} Qh2+ 46. Ke3 {aiming for Bxf6.} Qc2 $2 (46... Qg1+ 47. Kd2 Qh2+ 48. Kd3 Qf4) 47. Bxf6 Qc1+ 48. Kf2 gxf6 49. Qg8# {Precision: White = 51%, Black = 46%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Ladva, Ottomar"]
[Black "Smirin, Ilia"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2532"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,56,8,-9,0,0,0,-29,-15,-40,-15,-16,-21,-60,-62,-83,-84,-85,-83,-106,-112,-130,-102,-97,-81,-103,-103,-103,-103,-91,-38,-28,-29,-37,-19,-92,-95,-254,-235,-501,-488,-481,-481]} 1. Nf3 Nf6 2. g3 c5 3. b3 d6 4. Bg2 e5 5. O-O Nc6 6. c4 g6 7. Nc3 Bg7 8. Bb2 O-O 9. Ne1 {LiveBook: 32 Games} Bd7 {A38: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3 Nf6} 10. Nc2 Rb8 11. a3 $146 ({Predecessor:} 11. Ne3 a6 12. d3 b5 13. Qd2 Ne7 14. Ne4 Ne8 15. f4 f5 16. Nc3 exf4 17. gxf4 {½-½ (43) Eingorn,V (2595)-Kuzmin,A (2500) Oberwart 1995}) 11... a6 {[%cal Ba7a6,Ba6b5,Bb5b4][%mdl 32] Black has an edge.} 12. b4 b5 13. cxb5 axb5 14. bxc5 dxc5 15. a4 b4 16. Nb5 Nd4 17. Ne3 Be6 18. d3 Nxb5 19. axb5 Nd5 20. Nxd5 Bxd5 21. Bxd5 Qxd5 22. Ra5 c4 (22... e4 $17 23. Bxg7 Kxg7) 23. dxc4 $15 Qxc4 24. Qa4 $1 Rfd8 $36 {[%mdl 2048] Black has the initiative.} 25. e3 (25. Bc1 $11 {keeps the balance.}) 25... h5 $17 {[%cal Bh7h5,Bh5h4,Bh4h3][%mdl 32] ...h4 is the strong threat.} 26. b6 $2 (26. h3 $17) 26... h4 $19 ({Don't do} 26... Rxb6 27. h4 $17) 27. Rb5 $2 (27. Qb5 Qe4 28. Qe2) 27... h3 {( -> ...Qe4)} 28. Rxb4 {[#]} Qe2 $1 {Precision: White = 28%, Black = 75%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Ali Marandi, Cemil Can"]
[Black "Kaasen, Tor Fredrik"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2526"]
[BlackElo "2399"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,47,0,34,37,25,0,14,0,12,0,14,18,25,22,22,28,37,16,2,-33,-26,-71,6,-57,-1,-80,-77,-77,-43,-55,-45,-247,-218,-233,830,934,29988,714,29995,29996]} 1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 4. e3 Bg7 5. h4 c5 (5... c6 6. Nf3 Bg4 7. Be2 Nbd7 8. Ne5 Bxe2 9. Qxe2 h5 10. O-O-O Qa5 11. Kb1 {1-0 (44) Karjakin,S (2781)-Giri,A (2771) Stavanger 2017}) 6. Nb5 {A45: Trompowsky Attack} Na6 $1 7. Nf3 O-O $146 ({Predecessor:} 7... Bd7 8. a4 Qa5+ 9. Qd2 Qxd2+ 10. Nxd2 Nh5 11. Be5 {1-0 (28) Forbes,C (2075)-Chapman,T (1855) West Bromwich 2006}) 8. Be2 {The position is equal.} Bd7 9. a4 c4 10. Ne5 Bxb5 11. axb5 Nc7 12. h5 Nxb5 13. g4 (13. hxg6 {is more complex.} hxg6 14. c3 Re8 15. Qc2 e6 16. Kf1) 13... Nd7 14. g5 Nxe5 15. dxe5 Nc7 ({Better is} 15... e6 $17 {Hoping for ...Qc7.} 16. Bg4 Qc7) 16. Bg4 (16. Bg3 $11) 16... Ne6 (16... e6 $15) 17. hxg6 (17. h6 $11 {keeps the balance.} Bh8 18. Bxe6 fxe6 19. Bg3) 17... hxg6 $17 18. Qf3 {And now Qh3 would win.} Qb6 19. Qh3 {[%csl Gh1][%cal Rh3h7]} Rfd8 20. O-O-O $2 (20. Bxe6 $1 $15 Qxe6 21. Qxe6 fxe6 22. Ke2) 20... Nc5 $19 21. Rh2 {Rdh1 is the strong threat.} Na4 $4 {[%mdl 8192] [#]} (21... e6 $19 22. e4 Nxe4) 22. Rdh1 $1 $18 {White threatens Qh8+! and mate.} f5 23. exf6 (23. gxf6 $142 Qxb2+ 24. Kd2 c3+ 25. Ke2 Qxc2+ 26. Kf1 Qd3+ 27. Kg2 Qe4+ 28. Bf3) 23... exf6 {[#]} 24. Qh8+ $3 {[%mdl 512] Precision: White = 41%, Black = 40%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Blomqvist, Erik"]
[Black "Agmanov, Zhandos"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2525"]
[BlackElo "2393"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,77,13,9,7,11,0,5,6,16,95,91,76,57,58,58,45,48,49,36,47,-61,-56,-78,0,0,0,0,0,0,0,0,0,0,64,58,62,58,64,51,62,49,37,37,39,35,54,8,8,8,8,8,8,8,8,8]} 1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 4. O-O c5 5. c4 d4 6. e3 Nc6 7. exd4 cxd4 8. d3 Bd6 {A13: English Opening: 1...e6} 9. Bg5 h6 10. Bxf6 Qxf6 11. Nbd2 Qe7 12. a3 a5 13. Ne4 {LiveBook: 4 Games} Bc7 14. b4 axb4 15. axb4 {[%cal Ba3b4,Bb4b5][%mdl 32]} Rxa1 16. Qxa1 {[#]} e5 $146 (16... f5 $11 {keeps the balance.} 17. Nc5 O-O) 17. b5 $16 Nb4 18. c5 {[#] Threatens to win with b6.} O-O $1 19. Qa3 Nd5 20. Re1 {Nd6 is the strong threat.} b6 21. Nd6 {And now Nxd4! would win.} bxc5 22. Nc4 ({Better is} 22. Nxc8 $14 Rxc8 23. Qa6) 22... Nb4 $1 $15 23. Nxd4 {[#]} cxd4 ({Black should try} 23... Qd7 $1 $17 24. Nf3 Qxb5) 24. Rb1 $11 Bf5 25. Qxb4 Qxb4 26. Rxb4 Bxd3 27. b6 Bb8 28. b7 Bxc4 (28... f5 $11) 29. Rxc4 {[%mdl 4096] Endgame KRB-KRB} g6 30. Rc8 {[%mdl 1024] White has compensation.} f5 31. Bd5+ Kg7 32. f3 g5 33. Kf1 (33. Bc6 $5 {[%cal Rc6e8]}) 33... e4 $1 34. fxe4 fxe4+ 35. Rxf8 Kxf8 {The position is equal.} 36. Bxe4 h5 37. Ke2 h4 38. gxh4 gxh4 39. h3 {Precision: White = 71%, Black = 83%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Kobo, Ori"]
[Black "D`Costa, Lorin A R"]
[Result "1/2-1/2"]
[ECO "B81"]
[WhiteElo "2497"]
[BlackElo "2390"]
[Annotator "TA"]
[PlyCount "37"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,37,28,33,61,48,88,79,107,93,74,64,47,54,73,75,89,0,35,30,48,-22,-19,-89,-98,-107]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 h6 7. h4 Nc6 8. Rg1 h5 {B81: Sicilian Scheveningen: Keres Attack} (8... d5 9. exd5 Nxd5 10. Nxd5 exd5 11. Be3 Qxh4 12. Qf3 Nxd4 13. Bxd4 Qe7+ 14. Be2 Qe4 15. Qxe4+ dxe4 16. O-O-O Bd7 17. Bc4 {½-½ (55) Kryvoruchko,Y (2714)-Solodovnichenko,Y (2576) Chartres 2017}) 9. gxh5 Rxh5 10. Bg5 {[#] Hoping for Nxc6.} Rh7 {White is better.} 11. Nxc6 bxc6 12. e5 dxe5 13. Qf3 {Threatens to win with Bb5!} Be7 $146 {[#]} ({Predecessor:} 13... e4 14. Nxe4 Qa5+ 15. c3 Nd5 16. Bd3 {1-0 (29) Timman,J (2578)-Clemens,A (2213) Hoogeveen 2012}) 14. Bd3 $1 Rh8 15. Bxf6 ({White should try} 15. O-O-O $16 Bd7 16. Be4) 15... Bxf6 16. O-O-O Kf8 17. Qxc6 (17. h5 $14) 17... Rb8 $11 18. Bb5 (18. Ne4 $11 Qd7 19. Qxd7 Bxd7 20. Nxf6 gxf6 21. Be2) 18... Qe7 $17 19. Qc4 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Meskovs, Nikita"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[ECO "D78"]
[WhiteElo "2495"]
[BlackElo "2648"]
[Annotator "TA"]
[PlyCount "34"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,27,0,0,0,0]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. O-O O-O 6. c4 c6 7. Qb3 Qb6 8. Nc3 Bf5 9. Qxb6 axb6 10. cxd5 {D78: Fianchetto Grünfeld: 6 0-0 c6} Nxd5 11. Nxd5 cxd5 12. Bd2 Nc6 13. e3 {LiveBook: 6 Games} Rfc8 (13... Be4 14. Rfc1 Rfc8 15. Bc3 {½-½ (28) Ruck,R (2566)-Predojevic,B (2640) Sibenik 2016}) 14. Rfc1 {Find the theoretical novelty and annotate with similar games:} e6 $146 15. Be1 f6 16. Nd2 Bd3 17. Rc3 Nb4 {½-½ (31) Vaiksnoras,J-Primakov,V (2251) ICCF email 2009} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Pavlov, Sergey"]
[Black "Onischuk, Vladimir"]
[Result "1/2-1/2"]
[ECO "E69"]
[WhiteElo "2475"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "33"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,23,33,28,51,37,38,40,62,61]} 1. Nf3 g6 2. c4 Bg7 3. d4 d6 4. Nc3 Nf6 5. g3 O-O 6. Bg2 Nbd7 7. O-O e5 8. e4 c6 9. h3 b6 {E69: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4 c6 9 h3} 10. Be3 {White is slightly better.} Bb7 11. Qc2 exd4 12. Nxd4 {Find the theoretical novelty and annotate with similar games:} a6 $146 13. a4 Re8 14. Rad1 Qe7 15. Rfe1 c5 16. Nf3 Nf8 17. Bf4 {1-0 (77) Matlakov,M (2695)-Onischuk,V (2583) Yerevan 2014} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Tang, Andrew"]
[Black "Kovchan, Alexander"]
[Result "0-1"]
[ECO "A50"]
[WhiteElo "2475"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,125,21,21,2,11,29,31,17,18,-6,0,8,19,-25,-25,-37,-35,-29,-30,-22,-25,-21,-8,-14,-16,-18,12,20,25,25,20,22,18,19,34,0,22,0,25,16,25,0,12,0,0,0,0,0,0,0,0,0,0,0,0,-35,-46,-42,-43,-46,-46,-210,-235,-313,-287,-472,-460,-553,-27,-27,0,-550,-543,-515,-360,-543,-421,-372,0,-490,-541,-1238,-1206,-1009,-940,-1181,-1204,-2021,-1732,-5077,-191,-191,-191,-191,-8,-8,-8,-29972,-29974,-29975,-29976,-29976,-29977,-29975,-29977,-29978,-29979,-29989]} 1. d4 Nf6 2. c4 g6 3. f3 Nc6 4. d5 Ne5 {[%cal Bc6e5,Be5d7,Bd7c5][%mdl 32]} 5. e4 d6 6. Nc3 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3} Bg7 7. f4 Ned7 8. Nh3 O-O 9. Be2 Nc5 10. Nf2 e6 {LiveBook: 11 Games} 11. O-O exd5 12. cxd5 c6 $146 13. dxc6 bxc6 14. Qc2 d5 15. e5 Bf5 16. Qd2 Nfe4 17. Ncxe4 Nxe4 ({Of course not} 17... dxe4 $6 18. g4 $16) 18. Nxe4 Bxe4 19. b3 f6 20. Ba3 Re8 21. Rac1 fxe5 22. Rxc6 Qh4 23. Bb2 Rad8 24. fxe5 Bxe5 25. Bxe5 Rxe5 26. Qd4 Qg5 {[%csl Ge4][%cal Rg5g2] [#]} 27. Rf2 Re7 28. Bf1 Bf5 29. h4 Qg3 30. Rc3 (30. h5 $5) 30... Qd6 31. Re3 Rxe3 32. Qxe3 d4 33. Qg5 Rf8 34. Bc4+ Kg7 $1 35. Qf4 Qxf4 36. Rxf4 $11 {[%mdl 4096] Endgame KRB-KRB} Rd8 {And now ...d3 would win.} 37. Rf2 d3 38. Rd2 Kh6 39. Kf2 Kh5 40. Ke3 $2 (40. Kg3 $1 $15) 40... Kxh4 $19 41. b4 Kg3 42. a4 $2 (42. Bxd3 h5 43. b5 Bxd3 44. Rxd3 Re8+ 45. Kd4+ Kxg2 46. Ra3) 42... h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 43. b5 Re8+ $2 (43... h4 $19 {aiming for ...Re8+.} 44. a5 Re8+ 45. Kd4 Be4) 44. Kd4 $11 Rd8+ $2 {[%mdl 8192]} (44... Be4 $11 45. a5 h4) 45. Ke3 $19 h4 46. a5 g5 47. a6 (47. b6 {was the only chance.} axb6 48. axb6) 47... Re8+ 48. Kd4 {Strongly threatening b6.} Rd8+ 49. Ke3 Rd6 50. Bxd3 Bxd3 51. Rxd3 {KR-KR} Re6+ 52. Kd2+ Kxg2 53. Rd7 Re5 54. Rxa7 Rxb5 $2 (54... h3 55. b6 Rb5) 55. Rg7 {intending a7.} Kf2 56. a7 Rd5+ $2 (56... Rb2+ $19 57. Kc3 Ra2 58. Rf7+ Kg3) 57. Kc3 $11 Ra5 58. Kd3 $2 {[%mdl 8192] [#]} (58. Kb4 $11 Rxa7 59. Rxa7) 58... h3 {Black mates.} 59. Rxg5 Rxa7 60. Rf5+ Kg3 61. Rg5+ Kh4 62. Rg8 Rh7 63. Kd4 {Precision: White = 42%, Black = 61%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Baldauf, Marco"]
[Black "Sanal, Vahap"]
[Result "1/2-1/2"]
[ECO "E21"]
[WhiteElo "2460"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,120,20,12,32,36,66,52,58,39,41,41,71,73,104,107,132,144,142,62,62,62,63,63,95,91,94,102,103,104,109,27,113,104,110,-12,50,16,73,81,67,52,95,0,0,0,0,0,0,0,0,0,0,0,14,0,0,0,49,0,0,0,0,0,0,0,155,12,12,0,0,0,0,0,0,2,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Qc2 Bb7 6. a3 Bxc3+ 7. Qxc3 d6 8. g3 O-O 9. Bg2 a5 10. b3 Nbd7 11. O-O Be4 12. Bb2 {LiveBook: 14 Games} Qc8 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0} (12... Qb8 13. Rac1 Qb7 14. Rfd1 Rfc8 15. Bh3 b5 16. Nd2 bxc4 17. bxc4 Rcb8 18. Ba1 Bg6 19. Bg2 c6 20. e4 {½-½ (76) Wang,H (2717)-Tomashevsky,E (2728) Huaian 2016}) 13. Bh3 Qa6 $146 ({Find the theoretical novelty and annotate with similar games:} 13... Bb7 14. Nd2 c5 15. Nf3 Qc7 16. Rad1 Rfe8 17. a4 d5 18. dxc5 Nxc5 {0-1 (60) Bartel,M (2260)-Sachdev,T (2398) Warsaw 2016}) 14. d5 e5 {White is slightly better.} 15. Nd2 Bg6 16. a4 Rad8 17. Rae1 Rfe8 18. f4 {[%cal Bf2f4,Bf4f5,Bf5f6,Bf6g7][%mdl 32]} Ne4 19. Nxe4 Bxe4 20. Bxd7 (20. Qe3 $16 Nc5 21. fxe5 dxe5 22. Ba3) 20... Rxd7 $14 21. f5 c6 $1 {[%cal Rc6d5]} 22. dxc6 Rdd8 23. Qe3 Bxc6 {[#]} 24. f6 $1 h6 25. Rf5 Re6 26. Ref1 ({Better is} 26. fxg7 $16 Ba8 27. Qf2) 26... Qb7 (26... Ba8 $1 $11 {keeps the balance.}) 27. fxg7 $16 Rd7 28. h3 (28. Bc1 $16) 28... Be4 (28... Bg2 $11 29. R1f2 Qe4 30. Qxb6 Bxh3) 29. Rh5 Bh1 (29... Kxg7 $11 30. Kh2 Qc6) 30. Rf2 Qe4 31. Qxb6 {And now Bc1 would win.} Kxg7 32. Rh4 ({White should play} 32. Bc1 $16) 32... Qb1+ $11 33. Rf1 Qxb2 34. Kxh1 Qxe2 35. Rg4+ Rg6 36. Rxg6+ Kxg6 {[%mdl 4096] Endgame KQR-KQR} 37. Rf2 Qe1+ 38. Kg2 Qe4+ 39. Kh2 Qb7 40. Qxa5 Qxb3 41. Qa8 {[#] White threatens Qg8+ and mate.} Kg7 42. Qe4 {Threatens to win with Qg4+.} Rc7 43. Qg4+ Kf8 $2 (43... Kh8 $11) 44. Qh4 (44. Qg6 $16 Qe3 45. Qxd6+ Kg8 46. Qf6) 44... Qe3 $1 {[%cal Re3f2] The position is equal.} 45. Qd8+ (45. Kg2 $5 {[%cal Rh4d8]} Qg5 46. Qe4 $11) 45... Kg7 46. Qf6+ (46. Kg2 $5 {[%cal Rd8c7]} Qe4+ 47. Kh2 $11) 46... Kh7 47. Qf5+ Kg8 48. a5 Qa7 49. g4 e4 50. Rg2 {Black must now prevent g5.} (50. Qf6 $5 {[%cal Rg4g5]} Qxa5 51. Qd8+ (51. Qxd6 Rxc4 52. Qxh6 Rc3 $11) 51... Kg7 52. Qxd6 $11) 50... Rc5 $1 {[%cal Rc5f5]} ({Wrong is} 50... Rxc4 $2 51. g5 $18) 51. Qxe4 Rxa5 52. Qf4 Qe7 53. Rf2 Qe6 54. Qf6 {Qd8+ is the strong threat.} Rc5 55. Qxe6 fxe6 {KR-KR} 56. Rf6 Re5 57. Rxh6 Kg7 58. g5 Rxg5 59. Rxe6 Rc5 60. Rxd6 {Hoping for Rd4.} Rxc4 {Precision: White = 55%, Black = 54%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Ochsner, Bjorn Moller"]
[Black "Zakhartsov, Viacheslav V"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "2443"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,73,31,29,37,33,33,32,30,27,29,8,8,9,25,24,25,10,24,17,24,32,14,-34,-15,-20,-26,-70,-53,-88,-87,-94,-79,-143,-158,-159,-160,-170,-183,-161,-135,-150,-151,-154,-165,-136,-143,-208,-214,-216,-172,-217,-205,-222,-197,-214,-184,-315,-312,-409,-397,-877]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O a6 5. Bd3 Ngf6 (5... b5 6. Re1 Bb7 7. a4 b4 8. Bc4 Ngf6 9. d3 e6 10. Nbd2 Be7 11. Nf1 O-O 12. Ng3 d5 {1-0 (50) Vachier Lagrave,M (2783)-Nepomniachtchi,I (2766) Leuven 2017}) 6. Re1 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} g6 7. c3 Bg7 8. Bc2 {LiveBook: 34 Games. White is slightly better.} Ne5 9. Nxe5 dxe5 10. a4 b6 11. d3 O-O 12. Nd2 Qc7 13. Nc4 Be6 $146 14. a5 b5 15. Nb6 Rad8 16. Qe2 h5 17. Rf1 Kh7 {[%cal Bg8h7,Bh7h6,Bh6g7][%mdl 32]} 18. Kh1 Bh6 19. Bxh6 Kxh6 20. Rac1 Kg7 21. Bb1 Nd7 22. Nxd7 Rxd7 23. b4 (23. Qe3 $142) 23... Rc8 $17 {[#] And now ...cxb4 would win.} 24. Qe3 Rdd8 25. bxc5 Qxc5 26. Qd2 Qc7 27. f4 exf4 28. d4 f6 29. d5 Bf7 ({Inferior is} 29... Qxa5 30. Qxf4 Rxc3 31. e5 $14 (31. dxe6 Qb4 $11)) 30. Bd3 (30. Qxf4 $17 Qxf4 31. Rxf4) 30... Qxa5 $19 31. Rxf4 Qc7 32. Rff1 Qe5 33. Rfe1 Rc5 34. c4 Rdc8 {[%cal Rb5c4]} 35. Qa2 (35. cxb5 $142 Rxc1 36. Rxc1 Rxc1+ 37. Qxc1 axb5 38. Qb1) 35... bxc4 36. Bf1 a5 37. Rxc4 $2 {Precision: White = 51%, Black = 89%.} (37. Qc2) 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Lugovskoy, Maxim"]
[Black "Dastan, Muhammed Batuhan"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2440"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,135,0,0,0,0,0,42,-30,-27,-9,27,-114,-62,-50,28,20,34,26,39,37,37,40,54,20,244,237,246,241,349,320,763,714,841,765,768,793,868,864,804,707,1198,1201,1163,1165,896,20,20,20,8,14,10,24,40,34,51,35,33,8,8,8,24,16,8,49,327,302,310,319,337,337,524,518,535,535,479,535,534,535,529,522,521,498,876,868,835,798,833,617,617,570,559,371,371,364,880,768,29962,29964,29968,29968,29967,29968,29968,29970,29972,29974,29974,29973,29980,29978,29983,29984,29991,29992]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. Re1 Nf6 6. c3 a6 7. Bxc6 Bxc6 8. d4 Bxe4 9. Bg5 Bc6 10. Bxf6 gxf6 11. d5 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} Bd7 12. Nbd2 Qc7 {LiveBook: 9 Games} (12... e5 13. dxe6 Bxe6 14. Nc4 d5 15. Ne3 Be7 16. Qa4+ Qd7 17. Qxd7+ Kxd7 18. Nxd5 Bxd5 {0-1 (53) Muzychuk,A (2561)-Edouard,R (2628) Cap d'Agde 2016}) 13. a4 {The position is equal.} Rg8 14. Nc4 $146 ({Predecessor:} 14. Qc2 Rg7 15. Qd3 Rc8 16. Ne4 Kd8 17. c4 Bf5 18. Qc3 Bxe4 19. Rxe4 Qd7 20. Qa5+ Qc7 21. Qc3 Qd7 22. Qa5+ Qc7 23. Qc3 {½-½ (23) Rayner,F (2080)-Cunningham,R (2263) Hastings 2016}) 14... O-O-O 15. Nfd2 ({Better is} 15. b4 $14) 15... Kb8 $11 16. b4 e6 (16... Bh3 $5 17. g3 cxb4 18. cxb4 Rg4 $11) 17. Qf3 (17. b5 $1 $11 {remains equal.}) 17... exd5 (17... Bh6 $17 18. Ne3 Bxe3 19. Rxe3 exd5 20. Qxf6 d4 $1 {[%mdl 512]} 21. cxd4 cxb4) 18. Ne3 $1 $15 Be6 (18... cxb4 $15 19. Nxd5 Qc6 20. cxb4 Be6 21. Nxf6 Qxf3 22. Nxf3 Bg7 23. Nxg8 Bxa1 24. Rxa1 Rxg8) 19. b5 $1 $11 Rg5 20. bxa6 bxa6 21. Qe2 Ka7 22. f4 $1 $36 {[%cal Rf4g5][%mdl 2048] White is more active.} Rg8 23. f5 Bc8 $2 (23... d4 $11 24. cxd4 Bc8) 24. Nxd5 $18 Qc6 {[#]} 25. c4 $1 (25. Nxf6 Rg7 $11) 25... Bxf5 {[#]} (25... Bd7 {was necessary.} 26. Qh5 (26. Nxf6 Bg7 $11) 26... Qc8) 26. Nb3 $1 a5 $2 (26... Rb8) 27. Qf3 Bd7 28. Rab1 Qa6 29. Qc3 f5 30. Nxa5 Bg7 31. Qd2 {Black must now prevent Rb7+.} Bd4+ 32. Kh1 {Intending Rb7+ and mate.} Rb8 33. Nc7 Be3 34. Nxa6 $2 ({Only move:} 34. Qd5 $18 Qxa5 35. Nb5+ Rxb5 36. axb5) 34... Bxd2 $11 35. Nxb8 Rxb8 36. Rxb8 Kxb8 $18 {[%mdl 4096] Endgame KRN-KB} 37. Rb1+ Bb4 38. Nb3 Bxa4 {[#]} 39. Nd4 $1 {[%mdl 512]} Kc7 (39... cxd4 40. Rxb4+) 40. Ra1 {[%mdl 1024] White has compensation.} Bd7 ({Much weaker is} 40... cxd4 $6 41. Rxa4 Bc5 42. Kg1 $16) 41. Ra7+ Kd8 42. Nb5 d5 $1 {[%cal Rd5c4]} 43. Nd6 d4 $2 {[%mdl 8192]} (43... dxc4 $14 44. Nxf7+ Ke8 45. Nd6+ Kd8 46. Nxc4 Bc3) 44. Nxf7+ Ke8 45. Ne5 Be6 46. Nc6 ({Not} 46. Rxh7 Bd2 $18) 46... Bd7 (46... Kf8 $142 47. Nxb4 cxb4) 47. Ra8+ Kf7 48. Ne5+ Ke6 49. Nxd7 Kxd7 {KR-KB} 50. Kg1 Ke6 51. Rh8 d3 52. Kf2 Ke5 (52... Bd2 $142 53. Re8+ Kf6) 53. Ke3 d2 54. Ke2 Kd4 55. Kd1 Kxc4 56. Kc2 Kd4 57. Rxh7 Ke3 58. Re7+ Kf2 $2 (58... Kf4 59. Re8 Kg5) 59. h4 {[%cal Bh2h4,Bh4h5,Bh5h6,Bh6h7][%mdl 32]} Kxg2 60. h5 {White mates.} f4 61. h6 Bc3 {[#]} 62. Rg7+ $1 {[%mdl 512]} Kf2 (62... Bxg7 63. hxg7) 63. Rd7 Ba1 64. Kxd2 f3 65. Rd8 Kf1 66. h7 c4 67. Ke3 Ke1 68. Rb8 {Precision: White = 79%, Black = 34%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Mu, Ke"]
[Black "Fridman, Daniel"]
[Result "1-0"]
[ECO "D52"]
[WhiteElo "2411"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,115,12,9,62,12,11,0,20,12,26,0,0,11,12,12,40,8,45,14,40,28,29,0,0,0,0,0,-2,-17,0,0,0,0,8,12,8,0,0,0,0,0,75,67,80,65,84,69,136,124,132,139,189,119,118,118,166,32,32,32,32,33,43,70,71,71,73,33,33,33,33,33,33,0,49,47,49,49,49,51,735,745,678,655,557,529,12850,12850,12850,12847,12847,12847,12848,12848,12849,12849,12850,12850,12850,29979,29978,29979]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. Bg5 Nbd7 6. e3 Qa5 7. cxd5 exd5 8. Bd3 Ne4 9. O-O {LiveBook: 76 Games} Ndf6 {D52: Queen's Gambit Declined: Cambridge Springs Variation} (9... Nxg5 $11 10. Nxg5 Nf6) (9... Nxg5 10. Nxg5 Nf6 11. Qc2 h6 12. Nf3 Bd6 13. Rae1 O-O 14. Ne5 Bxe5 15. dxe5 Nd7 16. f4 Nc5 17. Bh7+ Kh8 18. a3 g6 19. Bxg6 fxg6 20. Qxg6 {½-½ (32) Wagner,D (2583)-Bu,X (2724) Moscow 2016}) 10. Bxf6 Nxf6 11. Ne5 Bb4 {The position is equal.} 12. Qc2 $146 ({Predecessor:} 12. Rc1 O-O 13. a3 Bxc3 14. Rxc3 Qd8 15. b4 Qd6 16. Qb1 a6 17. Rfc1 {½-½ (31) Vuckovic,B (2623)-Matjushin,G (2490) Cappelle-la-Grande 2011}) 12... O-O 13. a3 Bd6 14. f4 {[%cal Bf2f4,Bf4f5][%mdl 32]} Qd8 15. Rae1 Re8 16. Qf2 g6 17. Qf3 Re7 18. Kh1 Qf8 19. f5 {[%cal Rf5g6]} Bxe5 20. dxe5 Nd7 $1 {[%cal Rd7e5]} 21. e6 Ne5 22. Qd1 gxf5 23. Bxf5 Qg7 24. exf7+ Rxf7 25. Bxc8 Rxc8 26. Rxf7 Nxf7 27. e4 d4 28. Ne2 Rd8 (28... c5 $11) 29. Nf4 $16 {Threatens to win with Ne6.} Rd6 30. Qb3 $36 {[%mdl 2048] White fights for an advantage.} Qe5 31. Nd3 $1 {[%cal Rd3e5]} Qe7 (31... Qb5 $14 32. Qd1 Qg5) 32. h3 Kg7 33. e5 Rd5 {[#]} 34. Qc4 (34. Qd1 $1 $18) 34... a5 35. Re4 h5 36. Rxd4 ({White should try} 36. Qc1 $18) 36... b5 $1 $14 {[%cal Rb5c4]} 37. Qc3 b4 $1 {[%cal Rb4c3]} 38. axb4 axb4 39. Nxb4 Rxd4 40. Qxd4 c5 {[%cal Bc6c5,Bc5d4,Bd4d3,Bd3d2][%mdl 32]} 41. Nc6 {Hoping for Qc3.} cxd4 42. Nxe7 {[%mdl 4096] Endgame And now Nf5+ would win. KN-KN} d3 43. Nf5+ Kg6 44. e6 Ne5 (44... Nd6 {seems wilder.} 45. Ne3 Kf6 46. e7 Kxe7 47. Nd5+ Kf7) 45. Ne3 Kf6 46. Kg1 {aiming for Kf1.} d2 $1 47. Nd1 {Black must now prevent Kf2.} Kxe6 $2 {[%mdl 8192]} (47... Nd3 $14) 48. Kf2 $18 Kf5 49. Ke3 Nc4+ 50. Kd3 Nxb2+ 51. Nxb2 {KN-KPP} Kf4 52. Ke2 Kg3 {[#]} 53. Kf1 $1 h4 54. Nd1 Kf4 55. Kf2 Ke4 56. Ke2 Kf4 57. Kxd2 Kg3 58. Ne3 {Precision: White = 56%, Black = 44%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Laurusas, Tomas"]
[Black "Ovsejevitsch, Sergei"]
[Result "0-1"]
[ECO "D60"]
[WhiteElo "2409"]
[BlackElo "2596"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,66,4,11,0,13,19,5,18,21,15,15,46,56,44,54,99,87,128,131,143,149,142,0,35,31,82,-57,-58,-84,-22,-387,-368,-2879,-2645,-1997,-1288,-29993,-29994]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. cxd5 exd5 8. Bd3 Re8 9. O-O c6 10. Qc2 Nf8 11. Ne5 Ng4 12. Bxe7 Qxe7 13. Nxg4 Bxg4 14. Rae1 Bh5 15. f4 {[%cal Bf2f4,Bf4f5][%mdl 32] D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2)} f6 16. Qf2 {LiveBook: 3 Games} (16. e4 Qb4 17. Qf2 dxe4 18. Rxe4 Bf7 19. a3 Qd6 20. Rfe1 Rxe4 21. Nxe4 Qd5 22. Nc3 Qd6 23. Ne4 Qd5 24. Nc3 Qd6 {½-½ (24) Seyed,J (2421)-Kalugin,S (2410) Rilsk 2017}) 16... Bg6 17. f5 {The position is equal.} Bf7 18. Qh4 c5 $146 ({Find the theoretical novelty and annotate with similar games:} 18... Qb4 19. Re2 Re7 20. Rf3 Rae8 21. Rg3 Kh8 22. Qg4 Bg8 {½-½ (34) Sipahioglu,I (2060)-Korkmaz,N (2078) Konya 2017}) 19. dxc5 Qxc5 20. Qd4 Qa5 21. Nb5 {[%cal Bc3b5,Bb5a7,Ba7c8][%mdl 32]} Red8 22. Rc1 $36 {[%mdl 2048] Black is under pressure.} Rd7 23. b4 Qd8 24. Nxa7 Qb8 25. Nc8 $1 {[%cal Rc8b6] Nb6 is the strong threat.} Rxa2 26. Qb6 (26. Nb6 $16 Rd8 27. Rcd1) 26... d4 27. e4 {aiming for Bb5.} h5 (27... h6 $14) 28. Rc5 ({White should try} 28. Bb5 $16 Qe5 29. Bxd7 Qxe4 30. Bc6 (30. Rf3 Qe2 $17) 30... bxc6 31. Qxc6 Rxg2+ 32. Kh1 Qxc6 33. Rxc6) 28... h4 $1 $15 {[%cal Bh5h4,Bh4h3][%mdl 32]} 29. e5 {Black must now prevent e6.} h3 $1 ({Not} 29... fxe5 $2 30. f6 $18) 30. g3 $2 {[%mdl 8192] [#]} (30. Rf2 $11 {and White has nothing to worry.} Ra1+ 31. Rf1 Rxf1+ 32. Bxf1) 30... Qa8 $1 $19 {Hoping for ...Rg2+.} 31. Be4 $2 (31. e6 Rg2+ 32. Kh1 {[#]} Qa2 $3 $19 {[%mdl 512]}) (31. Ra5 Rg2+ 32. Kh1 Qxc8 33. e6) 31... Qa3 32. Re1 d3 {( -> ...d2)} ({Inferior is} 32... Qb2 33. Rc2 $14) 33. Rd1 Qb2 {Precision: White = 43%, Black = 55%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Bruedigam, Martin"]
[Black "Braun, Arik"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2408"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "26"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,26,25,20,18,35,0,-6,-6,-14,-59,-58,-67,-56,-493,-487]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. O-O Ng6 {B12: Caro-Kann: Advance Variation} 7. Ne1 h5 {LiveBook: 3 Games} 8. Be3 Nd7 {The position is equal.} 9. Nd2 Ndxe5 10. dxe5 {[#] aiming for Ndf3.} d4 11. Bxd4 $146 ({Find the theoretical novelty and annotate with similar games:} 11. Nc4 dxe3 12. Nxe3 Nxe5 13. Nxf5 exf5 14. Nd3 {½-½ (52) Harikrishna,P (2766)-Rapport,R (2702) Wijk aan Zee 2017}) 11... Qxd4 12. Nc4 Nf4 13. c3 $2 {[%mdl 8192]} (13. Nf3 $15 Qe4 14. Bd3 Nxd3 15. cxd3 Qxd3 16. Nd6+ Bxd6 17. exd6) 13... Qe4 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Lodici, Lorenzo"]
[Black "Tregubov, Pavel V"]
[Result "1/2-1/2"]
[ECO "E52"]
[WhiteElo "2408"]
[BlackElo "2593"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,57,4,6,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,25,20,34,24,31,0,23,23,23,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 a6 11. Qb3 Qe7 12. Rb1 {E52: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5 6 Bd3 b6} Re8 {LiveBook: 3 Games} 13. a4 (13. h3 {keeps more tension.} Nbd7 14. a4 h6 15. b5 Qe6 16. Bb2) 13... Nc6 {[%cal Rc6b4]} 14. Nxd5 {The position is equal.} Nxd5 15. Qxd5 Nxb4 16. Qxb7 {[#] Strongly threatening Rxb4.} Nxd3 17. Bd2 $146 ({Find the theoretical novelty and annotate with similar games:} 17. Qc6 Nb4 18. Qc4 a5 19. Bd2 Qd7 {½-½ (54) Mkrtchian,L (2465)-Jakovenko,D (2723) Yerevan 2014}) 17... a5 18. Qc6 Nb4 19. Bxb4 axb4 20. Ne5 Bxe5 21. dxe5 Red8 22. Rfc1 Ra5 23. g3 g6 ({Much worse is} 23... Qxe5 $6 24. Rxb4 g6 25. Qxc7 $16) 24. Kg2 Rd2 ({Reject} 24... Rxe5 $6 25. Qxc7 Rxe3 26. Qxb6 $14 (26. fxe3 Qe4+ 27. Kg1 Qxe3+ 28. Kh1 Qe4+ 29. Kg1 Qe3+ 30. Kh1 Qe4+ 31. Kg1 Qe3+ $11)) 25. Qxc7 Qxc7 26. Rxc7 Rxa4 27. Rc6 Ra5 28. Rxb4 {aiming for Re4.} Rxe5 29. Rcxb6 {Precision: White = 69%, Black = 74%.} (29. Rbxb6 $2 Rf5 $17) 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Kumsiashvili, Nikoloz"]
[Black "Brunello, Sabino"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "2403"]
[BlackElo "2566"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,110,7,10,0,0,0,0,0,0,0,27,0,0,-135,-129,-120,-138,-123,-28,-28,-28,-28,-28,-28,-28,-29,-29,-31,-36,-43,-23,-24,-26,-42,-42,-50,-58,-99,-99,-127,-124,-153,-145,-145,-8,-13,-16,-88,-41,-56,-8,-8,-8,-8,-8,-16,-16,-1650,-1660,-6099,-5884,-29965,-8,-8,0,-29966,-29966,-29966,-29965,-29969,-29970,-29970,-29971,-29972,-29973,-29973,-29974,-29978,-29976,-29976,-29977,-29977,-29978,-29978,-29979,-29983,-29984]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. e3 Be7 8. Bb5+ c6 9. Bd3 O-O 10. e4 Nxc3 11. bxc3 c5 12. O-O Qc7 {E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7} 13. Qe2 Rd8 {LiveBook: 8 Games} 14. Re1 Nc6 {[%cal Rc5d4] The position is equal.} 15. d5 exd5 16. exd5 Rxd5 {[#]} 17. Bg5 $146 {[%cal Rg5e7][%mdl 512] [#]} ({Predecessor:} 17. Ng5 g6 18. Nxf7 Rf8 19. Qe4 Rxf7 20. Qxd5 Nb4 21. Qxf7+ Kxf7 22. axb4 cxb4 23. Rxa7 Qxc3 24. Rd1 Qc6 25. f3 Qc8 26. Kh1 g5 {½-½ (25) Rattinger,F (2688)-Mercky,G (2524) ICCF email 2008}) 17... Ne5 $1 {[%mdl 512]} (17... Rxg5 18. Nxg5) 18. Bf4 (18. Nxe5 Bxg5) 18... Rxd3 19. Bxe5 (19. Nxe5 $11 Rdd8 20. Nxf7 $1 {[%mdl 512]} Qxf4 21. Nxd8 Bxd8 22. Rad1) 19... Qd7 $17 20. Bd4 Rxf3 $1 ({Don't play} 20... Rxd4 $6 21. cxd4 Bd6 22. Rad1 $14) 21. Qxe7 Qxe7 (21... Qc6 $1 $17 22. gxf3 Qg6+ 23. Kf1 Ba6+ 24. Re2 cxd4 25. cxd4 Bd3) 22. Rxe7 $11 Rd3 23. Rxb7 {aiming for Be5.} cxd4 24. cxd4 Rxd4 {[%mdl 4096] Endgame KRR-KRR} 25. Re1 Ra4 26. Re3 Rf8 27. h3 g5 28. Rd3 Kg7 29. g3 h5 30. Kg2 Kg6 31. Rc3 f6 32. Rcc7 Rxa3 33. g4 hxg4 34. hxg4 {White threatens Rg7+ and mate.} f5 (34... Rg8 $1 $17 35. Rd7 Ra4) 35. Rg7+ Kf6 36. gxf5 (36. Rxa7 $11 Rxa7 37. Rxa7) 36... Kxf5 (36... Ke5 {is more complex.} 37. Rxg5 Rxf5 38. Rgg7 Ra2 39. Kg3 Rfxf2 40. Rge7+ Kd5) 37. Rxa7 Rxa7 (37... Rb3 {seems wilder.} 38. Rad7 Kg4 39. Rd4+ Rf4 40. Rd5 Rf5) 38. Rxa7 {KR-KR} Ke4 {Hoping for ...Kd4.} 39. Rb7 $1 Rf6 40. Kg3 Kd5 {Threatening ...Kc6.} 41. Rg7 $2 {[%mdl 8192]} (41. f3 $11) 41... Rf5 $19 42. f3 b5 {[%cal Bb6b5,Bb5b4,Bb4b3][%mdl 32]} 43. Kg4 {[#]} Rf4+ $2 (43... Re5 $1 {mates} 44. Rd7+ Kc4 45. f4 gxf4 46. Kxf4 Rd5 47. Rc7+ Rc5 48. Rd7 b4 49. Ke3 Kc3 50. Rd3+ Kc2 51. Rd2+ Kc1 52. Rf2 b3 53. Kd4 Rc8 54. Kd3 Kb1 55. Rf1+ Ka2 56. Rf7 Ra8 57. Kd4 b2 58. Rf1 b1=Q 59. Rxb1 Kxb1 60. Kd5 Re8 61. Kc4 Kc2 62. Kc5 Kc3 63. Kd5 Re1 64. Kc5 Rd1 65. Kb5 Rd5+ 66. Kb6 Kb4 67. Kc6 Rd3 68. Kb7 Kc5 69. Kc7 Kb5 70. Kb7 Rc3 71. Ka8 Ka6 72. Kb8 Kb6 73. Ka8 Rc8#) 44. Kg3 $11 Rf5 $2 {[%mdl 8192]} (44... Ra4 $11) 45. Kg4 {[#]} Re5 $1 {Black mates.} 46. Rc7 b4 47. f4 gxf4 48. Kxf4 Re1 49. Kf3 b3 50. Rb7 Kc4 51. Kf2 Re8 52. Rc7+ Kd3 53. Rb7 Kc2 54. Rc7+ Kb1 55. Kf1 b2 {Precision: White = 42%, Black = 58%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Ikeda, Junta"]
[Black "Kunin, Vitaly"]
[Result "0-1"]
[ECO "E20"]
[WhiteElo "2397"]
[BlackElo "2551"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,86,-29,-24,-32,-2,-27,-31,-63,-26,-33,-4,-70,-74,-126,-152,-148,-142,-279,-198,-280,-280,-1369,-1382,-1351,-495,-481,-361,-833,-827,-839,-830,-929,-858,-814,-465,-465,358,-452,-462,-463,-426,-455,-452,-453,-441,-454,-452,-524,-524,-495,-479,-526,-464,-537,-525,-519,-462,-566,-544]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 O-O 7. cxd5 exd5 8. e3 c5 9. Bd3 b6 10. Ne2 Ba6 11. Bxa6 Nxa6 12. O-O Nc7 13. Ng3 Re8 14. Qd3 {E49: Nimzo-Indian: Rubinstein: 5 Bd3 d5 6 a3 Bxc3+ 7 bxc3} (14. Ra2 Nb5 15. Qd3 Nd6 16. Re2 Qd7 17. e4 Qb5 18. Qxb5 Nxb5 19. Bb2 Nd6 20. e5 Nc4 21. exf6 Rxe2 22. Nxe2 Nxb2 23. dxc5 bxc5 {½-½ (32) Jones,G (2625)-Wojtaszek,R (2727) Gibraltar 2016}) 14... Ne6 15. Bb2 Rc8 {LiveBook: 5 Games} 16. Rae1 {Black has an edge.} Qc7 17. Rf2 h5 $146 ({Find the theoretical novelty and annotate with similar games:} 17... cxd4 18. cxd4 g6 19. Qd2 Re7 20. e4 Qf4 21. Qd1 Rec7 22. Ne2 Qh4 23. e5 Ne8 24. g3 Qd8 25. Bc1 Rc4 {½-½ (25) Konaplev,A (2147)-Dimitrov,V (2428) Sunny Beach 2015}) 18. Ref1 cxd4 19. cxd4 Qc4 20. Qf5 ({White should try} 20. Qd2 $11) 20... h4 $36 {[%mdl 2048] Keeping White busy.} 21. Nh5 (21. Nh1 $142) 21... Nxh5 $17 22. Qxh5 Qb3 23. g3 (23. Bc1 $17 {was necessary.}) 23... Qxe3 24. Qxd5 (24. Kg2 {might work better.}) 24... Ng5 $19 25. Kh1 $2 (25. Qd7 hxg3 26. hxg3) 25... Nh3 26. Rg2 hxg3 (26... Qd3 $142 27. Ra1 Re6) 27. hxg3 Qh6 28. Qb3 $2 ({Don't go for} 28. Rh2 $2 {[#]} Rc2 $1 $19 {[%mdl 512]}) (28. Qf5 Nf2+ 29. Kg1 Qh1+ 30. Kxf2 Re2+ 31. Kxe2 Qxg2+ 32. Rf2 Re8+ 33. Qe5 Rxe5+ 34. dxe5 Qxg3 35. Ke3) 28... Re3 29. Qb5 Re6 30. Qb3 Rce8 {( -> ...Nf2+)} 31. Qb5 Nf2+ 32. Kg1 Qh1+ 33. Kxf2 {[#]} Re2+ $1 {[%mdl 512] Black is clearly winning.} 34. Qxe2 Rxe2+ 35. Kxe2 Qxg2+ {[%mdl 4096] Endgame KQ-KRB} 36. Rf2 Qxg3 37. Ke3 Kf8 38. d5 Qg5+ 39. Ke4 Qe7+ 40. Kf4 g5+ 41. Kg4 Qe3 42. Kg3 Ke7 43. a4 Kd6 {Precision: White = 20%, Black = 78%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Tomazini, Zan"]
[Black "Kvon, Andrey"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2395"]
[BlackElo "2500"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,110,41,30,37,27,38,43,40,51,62,0,0,-5,-6,-3,0,-61,-13,-29,-20,-17,-6,-6,0,-8,0,-20,0,-17,0,-57,0,0,0,0,0,0,-6,-33,12,0,0,-51,-60,-66,-55,-50,0,0,0,0,0,-4,0,0,0,0,0,0,0,0,0,0,0,0,0,-11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 g6 5. dxc5 dxc5 6. e5 Nh5 {B07: Pirc Defence: Miscellaneous Systems} (6... c4 7. Qa4+ Bd7 8. Qxc4 Ng4 9. Nf3 Nc6 10. Be4 Ngxe5 11. Nxe5 Nxe5 12. Qe2 Bg7 13. O-O O-O 14. Rd1 {0-1 (27) Rabiega,R (2498)-Almasi,Z (2702) Germany 2016}) 7. Nf3 Nc6 8. O-O Bg7 {White is slightly better.} 9. Re1 $146 ({Predecessor:} 9. Be4 Nxe5 10. Qxd8+ Kxd8 11. Be3 Nc4 12. Bxc5 Nf6 13. Bc2 b6 14. Bd4 Nxb2 {0-1 (104) Skawinski,A (2239)-Kempinski,R (2599) Warsaw 2012}) 9... Bf5 10. Bxf5 (10. Be2 $14) 10... Qxd1 $1 $11 11. Rxd1 gxf5 12. Re1 Rd8 13. Bd2 ({White should try} 13. Kf1 $1 $11) 13... O-O 14. h3 Rd3 $36 {[%mdl 2048] Black fights for an advantage.} 15. Re2 f4 16. Na3 Rfd8 17. Rae1 a6 18. Nb1 b5 19. Re4 Bh6 20. R1e2 (20. a4 $11) 20... f5 (20... Ng7 $15) 21. exf6 $1 Nxf6 22. Re6 R8d6 23. Nh4 R3d5 24. g4 (24. a4 $5) 24... fxg3 (24... Rxe6 {keeps more tension.} 25. Rxe6 Ne5 26. Rxe7 Bf8 27. Re6 Kf7) 25. Bxh6 Rd1+ 26. Re1 (26. Kg2 $11 gxf2 27. Kxf2 Rxb1 28. Nf5 Rxe6 29. Rxe6) 26... Rxb1 $1 $15 27. fxg3 Rxe6 ({Inferior is} 27... Rxb2 28. Nf5 $16) 28. Rxb1 Re2 29. Nf3 Kf7 30. Kf1 Rc2 31. Bd2 {Strongly threatening Ke2.} b4 32. cxb4 Ne4 33. Ng5+ Nxg5 34. Bxg5 Nxb4 $11 {[%mdl 4096] Endgame KRB-KRN} 35. Re1 Rxb2 36. Rxe7+ Kg6 37. h4 h5 38. Rc7 Nd3 39. Rd7 c4 40. Rd4 Rf2+ 41. Kg1 {[#] And now Rxd3! would win.} Rc2 42. g4 hxg4 43. Rxg4 Ne5 44. Re4 Nf3+ (44... Kf5 $5 45. Rf4+ $8 Kg6 $11) 45. Kf1 c3 (45... Nxg5 46. hxg5 Kf5 47. Re2 $15) 46. Ra4 Nxg5 47. Rxa6+ {The position is equal.} Kf5 48. hxg5 {KR-KR} Rh2 49. Rc6 c2 50. Ke1 $1 Kxg5 {[#] aiming for ...Kf5.} 51. Rc4 Kf5 52. a4 Ke5 {Hoping for ...Kd5.} 53. a5 Kd5 54. Rc8 Rh1+ (54... Kd4 $5 55. a6 $8 Kd3 56. Rd8+ (56. a7 Rh1+ 57. Kf2 Ra1 $11) 56... Ke4 $11) 55. Kd2 Ra1 {Precision: White = 70%, Black = 51%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Mandizha, Farai"]
[Black "Berelowitsch, Alexander"]
[Result "1/2-1/2"]
[ECO "D08"]
[WhiteElo "2392"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,51,0,0,15,-9,-2,-19,-3,-20,57,62,68,-2,2,-17,-17,-19,-19,-23,-13,-20,-5,-22,-11,-12,-22,-35,-32,-41,-45,-84,-59,-96,-69,-59,0,0,4,3,5,5,5,6]} 1. d4 d5 2. c4 e5 3. Nf3 e4 4. Nfd2 c6 5. Nc3 Nf6 6. e3 {LiveBook: 7 Games. D10: Slav Defence: 3 cxd5 (without early Nf3) and 3 Nc3} (6. cxd5 cxd5 7. Nb3 h6 8. Bf4 Be6 9. e3 Bb4 10. a3 Bxc3+ 11. bxc3 Nbd7 12. a4 Rc8 13. Bd6 Rxc3 {1-0 (44) Hernando Rodrigo,J (2345)-Jedryczka,K (2315) Castelldefels 2006}) 6... Na6 7. cxd5 cxd5 8. f3 $146 ({Predecessor:} 8. Bb5+ Bd7 9. O-O Nc7 10. Be2 Bd6 11. f3 exf3 12. Bxf3 {½-½ (21) Tran,Q-Phan,D Ho Chi Minh City 1999}) 8... exf3 9. Qxf3 Bd6 ({Better is} 9... Nb4 $11 10. Bb5+ Bd7 11. Bxd7+ Qxd7) 10. Bb5+ $14 ({And not} 10. Nxd5 Nxd5 11. Bb5+ Kf8 $17) 10... Bd7 11. Bxd7+ ({White should play} 11. Bxa6 $1 $14 bxa6 12. Nxd5 Nxd5 13. Qxd5) 11... Qxd7 $11 12. O-O (12. e4 $5 {[%cal Re4e5]} Nb4 13. O-O $11) 12... O-O 13. e4 dxe4 14. Ndxe4 Nxe4 15. Nxe4 Nb4 16. Bd2 Be7 17. Rad1 Nd5 18. Qh5 Rad8 19. Bc1 b6 20. Rf3 {[#] Hoping for Rh3.} Qe6 21. Re1 g6 (21... f5 {looks sharper.} 22. Qh3 Nc7 23. Qg3 Rxd4 24. Ng5 Qd7) 22. Qe5 Qxe5 (22... Qc6 $15 23. Bh6 f6) 23. dxe5 {The position is equal.} Rd7 24. Rd1 Rfd8 25. Rfd3 b5 26. Bg5 {Precision: White = 46%, Black = 54%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Gokerkan, Cem Kaan"]
[Black "Wieczorek, Oskar"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "2357"]
[BlackElo "2460"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,89,26,39,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,35,29,33,43,54,48,539,59,59,16,51,0,0,0,0,0,0,0,0,0,0,-10,0,0,0,0,0,0,28,30,43,7,11,0,33,0,28,14,96,109,166,0,576,558,1443,1454,29985,29986,29996,29997,29997,29996,29998,29997]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} c6 2. Nc3 d5 3. Nf3 Nf6 4. e5 Ne4 5. Ne2 Qb6 6. d4 {B11: Caro-Kann: Two Knights Variation} e6 7. Ng3 c5 8. c3 (8. Bd3 Nc6 9. Nxe4 dxe4 10. Bxe4 cxd4 11. O-O Bd7 12. a3 h6 13. Re1 {1-0 (71) Short,N (2675)-Caruana,F (2827) Caleta 2017}) 8... Nc6 9. Bd3 cxd4 {LiveBook: 6 Games} 10. cxd4 Bb4+ 11. Kf1 f5 12. Ne2 O-O $146 ({Predecessor:} 12... Bd7 13. h4 {0-1 (53) Middleton,T-Haydon,D (2290) High Wycombe 2011}) 13. h4 Bd7 14. Nf4 (14. a3 $5 {[%cal Ra3b4]} Be7 15. b4 $11) 14... Rac8 (14... Nxd4 15. Be3 $17) 15. Be3 Be7 16. Kg1 Na5 17. Ng5 Nxg5 18. hxg5 Bxg5 {[#]} ({Wrong is} 18... Qxb2 $2 19. Rb1 $18) 19. Nxd5 $1 {[%mdl 512]} exd5 20. Bxg5 Qxb2 21. Rh4 $1 {Hoping for Rb1.} Ba4 $2 {[%mdl 8192] [#]} (21... Qb6 $14) 22. Qxa4 $2 (22. Qh5 $1 $18 {[%cal Rh5h7][%mdl 512]} Qxa1+ 23. Kh2) 22... Qxa1+ $14 23. Kh2 Qc3 $1 {[%cal Rc3d3]} 24. Qd7 (24. Qb5 $14) 24... Qc6 $1 $11 {[%cal Rc6d7]} ({But not} 24... Qxd3 $2 {[#]} 25. Bf6 $1 $18 {[%mdl 512]}) 25. Bxf5 Qxd7 26. Bxd7 Nc6 27. Be6+ Kh8 28. Bxc8 Rxc8 {[%mdl 4096] Endgame KRB-KRN} 29. Be3 b5 30. Kg3 Kg8 (30... Ne7 $5 {[%cal Re7f5]} 31. Kg4 Rc2 $11) 31. Rh1 Ne7 32. Kf4 Kf7 33. Rxh7 b4 34. Kg5 Rc2 35. Rh8 Rxa2 36. Rb8 Nc6 37. Rb7+ Ke8 (37... Kf8 $11 {keeps the balance.}) 38. e6 $16 Ra6 (38... Nd8 $16 39. Rxb4 Nxe6+ 40. Kf5 Nc7) 39. f4 $2 (39. Rxg7 $18 {Kf6 is the strong threat.} Nd8 40. Kf5 Nxe6 41. Rb7) 39... Rb6 $2 {[%mdl 8192]} (39... Ra3 $11 {and Black has nothing to worry.} 40. Bc1 Rg3+ 41. Kh4 Rc3) 40. Rxg7 $18 b3 {And now ...b2 would win.} 41. f5 {[%cal Bf4f5,Bf5f6,Bf6f7][%mdl 32] f6 would kill now.} ({Weaker is} 41. Kf6 Kd8 $18) 41... b2 42. f6 {[%cal Rg7g8] White mates.} Kd8 43. Rd7+ Ke8 44. f7+ Kf8 45. Kh5 {Precision: White = 72%, Black = 37%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.11"]
[Round "7"]
[White "Ozturk, Kubra"]
[Black "Sulskis, Sarunas"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2298"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,52,0,24,44,-9,0,-33,-56,-47,-39,-38,-56,-61,-62,-57,-49,-64,-52,-39,-39,-77,-82,-89,-35,-139,-152,-192,-200,-200,-181,-225,-221,-235,-245,-277,-196,-284,-247,-308,-279,-417,-407]} 1. d4 d5 2. c4 e6 3. g3 Nf6 4. Nf3 dxc4 5. Bg2 Nc6 6. O-O Rb8 7. e3 e5 {E04: Open Catalan: 5 Nf3} (7... b5 8. b3 cxb3 9. axb3 Be7 10. Qe2 O-O 11. Bd2 Bb7 12. Rc1 a6 13. Ne1 Nb4 14. Bxb7 Rxb7 15. Bxb4 Bxb4 16. Rxa6 {½-½ (48) Radjabov,T (2722)-Cheparinov,I (2677) Monzon 2016}) 8. b3 $146 (8. Nxe5 $14 Nxe5 9. dxe5 Qxd1 10. Rxd1) ({Predecessor:} 8. Nbd2 exd4 9. Nxc4 Be6 10. Nce5 Nxe5 11. Nxe5 Bd6 12. Qa4+ c6 13. exd4 O-O 14. Qxa7 Qc7 15. Qa4 {0-1 (42) Bindrich,F (2594)-Hausrath,D (2503) Berlin 2015}) 8... Bg4 9. Qc2 exd4 {Black is slightly better.} 10. Nxd4 Nxd4 11. exd4 Qxd4 12. Re1+ Be6 13. Bb2 Qd3 14. Qc1 Bb4 15. Re3 Qd6 {...cxb3 is the strong threat.} 16. Nc3 O-O ({Weaker is} 16... cxb3 17. Nb5 $16) 17. bxc4 Rfd8 ({Black should try} 17... Rbd8 $17 {And now ...c6 would win.} 18. Bxb7 Bc5) 18. Nb5 ({White should play} 18. Nd5 $1 $15) 18... Qd2 $36 {[%mdl 2048] Black is on the roll.} 19. Bc3 Bxc3 20. Rxc3 c6 21. Qxd2 Rxd2 22. Na3 Rbd8 23. h3 R8d3 24. Rb3 (24. Rxd3 $142 Rxd3 25. Nc2) 24... h5 25. Bf1 {[#]} Rxa2 $1 {[%mdl 512]} 26. Rxd3 (26. Rxa2 {was worth a try.} Rxb3 27. Nc2) 26... Rxa1 {Precision: White = 24%, Black = 63%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Sasikiran, Krishnan"]
[Black "Ladva, Ottomar"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "2688"]
[BlackElo "2532"]
[Annotator "TA"]
[PlyCount "128"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,128,17,29,9,36,27,43,18,58,15,39,47,61,58,58,65,55,37,49,54,36,47,37,23,39,43,51,19,38,0,0,0,0,0,-8,-80,-78,-100,0,0,0,0,0,-1,48,36,59,44,64,0,0,-15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,0,0,0,0,0,-298,-286,-226,-139,-176,-12,-11,-1,-35,-13,-17,0,-11,0,-23,0,-18,-8,-12845,-12841,-12222,-11771,-11276,-11276,-6103,-6079,-6079,-6070,-1446,-1278,-29973,-29974,-29973,-29972]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 Nc6 8. Qd2 Be6 9. O-O-O {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves} Qd7 10. Kb1 (10. h4 h6 11. c4 Bf6 12. Nd4 Nxd4 13. Bxd4 Qe7 14. Qf4 Bxd4 15. Qxd4 Qf6 16. Qxf6 gxf6 {1-0 (56) Grischuk,A (2761)-Yu,Y (2753) Jiayuguan 2017}) 10... Bf6 11. h3 O-O-O {LiveBook: 7 Games} 12. Ng5 a6 (12... Bf5 {looks sharper.} 13. Bc4 Bg6 14. Bd5 Rhe8 15. f3 h6) 13. Nxe6 fxe6 14. g4 d5 $146 ({Predecessor:} 14... h6 15. f4 e5 16. f5 d5 17. Bg2 e4 18. h4 Be5 19. Qf2 Qf7 {½-½ (53) Pribeanu,M (2195)-Avram,S (2266) Belgrade 2010}) 15. Be2 h6 16. f4 Qe7 17. g5 hxg5 18. fxg5 Be5 19. Qe1 Qd6 20. Bg4 Kb8 21. Bc1 Rde8 22. Rf1 Bg3 23. Qe3 Bh4 24. c4 d4 $1 {[%cal Rd4e3]} 25. Qe4 Qc5 26. Rf3 ({Don't blunder} 26. Bxe6 $2 Qe7 $19) 26... Bxg5 27. b4 $1 {[%cal Rb4c5]} Qe7 28. b5 (28. Bxg5 $11 Qxg5 29. Rb3) 28... Bxc1 $17 29. Rxc1 {[#]} axb5 (29... Na5 $1 $17 {[%cal Ra5c4]} 30. bxa6 bxa6) 30. cxb5 $11 Na7 {[%cal Bc6a7,Ba7c8,Bc8d6][%mdl 32]} 31. Rb3 $36 {[%mdl 2048] White fights for an advantage.} Rd8 32. Re1 {aiming for Bf3.} Qc5 33. Bf3 $1 {[%csl Gf3][%cal Re4b7] [#]} (33. Bxe6 $2 Nxb5 34. Ka1 Rde8 $17) 33... Qd5 34. Qg4 Qc5 35. a4 (35. b6 $1 $14 cxb6 36. Rxe6) 35... Nc8 36. Qxe6 Nd6 37. Re5 Qc4 38. b6 cxb6 39. Rxb6 Qf1+ 40. Re1 Qxf3 41. Rxd6 Qc3 {Strongly threatening ...Qb4+.} 42. Rxd8+ Rxd8 {[%mdl 4096] Endgame KQR-KQR} 43. Qe5+ Ka8 44. Rd1 Qb4+ 45. Kc1 Qa3+ 46. Kb1 {White wants to mate with Qa5+.} Qb4+ 47. Kc1 Qxa4 {...Rc8 is the strong threat.} 48. Rd3 $2 {[%mdl 8192]} (48. Qc5 $11) 48... Rc8 $19 {[%csl Gc8][%cal Ra4c2]} 49. Qe2 Qa1+ 50. Kd2 Qa5+ $2 (50... Qa2 $19 51. Kc1 Qa1+ 52. Kd2 Qa2) 51. Kd1 $11 Rf8 {White must now prevent ...Qa1+.} (51... Qa1+ $2 52. Kd2 $19) 52. Rb3 Qa1+ 53. Kd2 Qa5+ 54. Kc1 Qa1+ 55. Kd2 $1 Qa5+ 56. Kc1 Rf6 57. Qc4 $2 {[%mdl 8192]} (57. Qd3 $11 Qa1+ 58. Rb1) 57... Qa1+ $19 58. Rb1 Qa3+ 59. Rb2 Qe3+ 60. Kb1 Qe1+ 61. Ka2 Ra6+ 62. Kb3 Qe3+ 63. Qd3 Qe6+ 64. c4 dxc3+ {Precision: White = 43%, Black = 54%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Shirov, Alexei"]
[Black "Lugovskoy, Maxim"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "2648"]
[BlackElo "2440"]
[Annotator "TA"]
[PlyCount "170"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,170,32,38,10,23,21,16,13,0,0,0,0,0,0,0,0,0,-13,0,0,0,-10,0,0,0,0,2,3,64,41,50,58,51,24,46,-23,66,58,101,95,95,103,100,12,12,0,0,0,0,0,14,14,68,71,70,70,89,85,126,145,140,130,138,120,119,68,89,80,83,48,56,28,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-575,-551,-556,-556,-556,-552,-541,-520,-572,-584,-584,-454,-415,-387,-658,-672,-662,-470,-633,-618,-611,-563,-563,-600,-597,-550,-459,-417,-417,-260,-659,-652,-647,-927,-675,-587,-981,-1073,-893,-538,-1053,-1033,-1064,-1063,-1030,-924,-743,-679,-1148,-1129,-1964,-1910,-4562,-4501,-4081,-3616,-2904,-1541,-7042,-6529,-4591,-4591,-29976,-12302,-4562,-4519]} 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Nh6 6. Bd3 cxd4 {C02: French: Advance Variation} 7. Bxh6 gxh6 8. cxd4 Qb6 {LiveBook: 4 Games. White is slightly better.} (8... Bg7 9. O-O f6 10. Re1 O-O 11. Nbd2 Kh8 12. Rc1 fxe5 13. dxe5 Bd7 14. Nb3 {1-0 (62) Ding,L (2718)-Nguyen,N (2614) China 2013}) 9. Nc3 Qxb2 $146 ({Predecessor:} 9... Bd7 10. Bb5 Bg7 11. O-O O-O 12. Bd3 f6 13. exf6 Bxf6 14. Na4 {½-½ (29) Gonzalez Rivera,E (2101)-Martin Rodriguez,E (2078) Madrid 2014}) 10. Nb5 $1 {[%cal Rb5c7]} Qb4+ $1 ({Don't play} 10... Bb4+ $6 11. Kf1 $14) 11. Kf1 (11. Nd2 $5 {[%cal Rb5c7]}) 11... Qa5 $1 12. g3 a6 13. Nd6+ Bxd6 $1 14. exd6 Qa3 15. Kg2 Qxd6 16. Qd2 f6 17. Qxh6 Qf8 18. Qe3 Qf7 19. Rab1 O-O 20. Rb6 Qc7 21. Rhb1 e5 ({Better is} 21... Kh8 $11) 22. dxe5 $14 fxe5 23. Ng5 e4 24. Bc2 $1 {[%cal Rc2b3]} Qe5 25. Bb3 (25. Rd1 $14 Kg7 26. h4) 25... Kh8 (25... Kg7 $1 $11) 26. Qc5 {[%cal Rc5f8]} Bg4 27. Qxd5 Qxd5 28. Bxd5 Rf5 29. Nf7+ ({Of course not} 29. Bxe4 Rxg5 30. Rxb7 Bf5 $11) (29. Rxb7 $16 {[%csl Gg5][%cal Rb7h7]} Rxg5 30. Bxc6) 29... Kg7 $11 30. Rxb7 Bf3+ $1 31. Kg1 Rxd5 32. Ne5+ Kf6 33. Nxc6 Rd2 (33... Rf8 $11) 34. R7b6 $1 $36 {[%mdl 2048] White is in control.} Kg7 35. Ne5 Rad8 36. Rb7+ Kf6 37. Nxf3 exf3 $16 {[%mdl 4096] Endgame KRR-KRR} 38. R1b6+ Ke5 {[%cal Rd2d1]} 39. Re7+ Kd5 40. Re1 (40. Rb1 $1 $16) 40... Re8 {[%cal Re8e1]} 41. Rf1 $1 Rxa2 42. Rb3 Rf8 43. h3 a5 44. Kh2 (44. Rd1+ $14 Kc4 45. Rb7) 44... a4 45. Rb7 Ra8 46. Rxh7 a3 {Threatens to win with ...Rb2.} 47. g4 Rb2 48. Kg3 a2 49. Rd7+ Ke6 50. Rdd1 Rab8 {Hoping for ...Rb1.} 51. Rfe1+ Kf7 {...Rb1 is the strong threat.} 52. Rd7+ Kf8 {White must now prevent ...Rb1.} 53. Ree7 $2 {[%mdl 8192] [#]} (53. Ra1 $11 Ra8 54. Rdd1) 53... Re2 $1 $19 {[%cal Re2e7]} ({And not} 53... a1=Q 54. Rf7+ Kg8 55. Rg7+ Kf8 56. Rgf7+ Ke8 57. Rde7+ Kd8 58. Rd7+ Ke8 59. Rfe7+ Kf8 60. Rf7+ $11) 54. Rf7+ {[#]} Ke8 $1 55. Ra7 {[#]} a1=Q $1 {[%mdl 512]} 56. Rxa1 Kxf7 57. Kxf3 Rbb2 58. Rf1 Rec2 59. Kg3 Kf6 60. h4 $2 (60. Kg2) 60... Ra2 61. Kg2 Re2 62. Kf3 Ke5 63. Kg3 Ke4 64. f3+ Ke5 {( -> ...Rg2+)} 65. Rg1 Kf6 66. Kh3 Rh2+ 67. Kg3 Rab2 68. Ra1 $2 (68. h5) 68... Rbg2+ 69. Kf4 Rxh4 70. Ra6+ Ke7 71. Ra7+ Kd6 72. Ra6+ Kc5 73. Ra5+ Kc6 74. Ra6+ Kb7 75. Rf6 Rh8 76. Kf5 Rg8 77. Rf7+ Kc6 78. Rf6+ Kd7 79. Rf7+ Ke8 80. Ra7 Rf8+ 81. Kg6 Rxf3 82. g5 Rd3 83. Ra5 Ke7 84. Kg7 Rd7 (84... Ke6 $142 85. Kg6 Rd6 86. Rb5 Rf2 87. Kh5 Rd5 88. Rb6+ Ke5 89. Kh6 Rd6+ 90. Rxd6 Kxd6 91. Kh5 Rg2 92. Kh6 Ke6 93. Kg6 Rg4 94. Kh5 Kf5 95. g6 Rxg6 96. Kh4 Rg8 97. Kh3 Kf4 98. Kh2 Kf3 99. Kh1 Kf2 100. Kh2 Rh8#) 85. Kh6 Kf7 {Precision: White = 51%, Black = 64%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Smirin, Ilia"]
[Black "Pavlov, Sergey"]
[Result "0-1"]
[ECO "B45"]
[WhiteElo "2634"]
[BlackElo "2475"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,84,36,52,33,57,24,25,-49,16,16,0,-213,-213,-194,-200,-193,-200,-190,-219,-322,-306,-283,-193,-190,-189,-184,-174,-176,-185,-187,-195,-189,-187,-180,-186,-197,-197,-198,-175,-179,-179,-193,-189,-199,-192,-275,-272,-282,-293,-374,-374,-371,-364,-474,-404,-404,-397,-567,-435,-547,-404,-562,-554,-1019,-1008]} 1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 {[%cal Bg8f6,Bf6d5,Bd5e3][%mdl 32]} 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 Qb6 10. c4 Ne3 11. Qd3 Bb4+ 12. Bd2 $1 {B45: Sicilian Four Knights} Ba6 13. b3 O-O {[#]} 14. h4 $146 (14. Bxb4 $11 Qxb4+ 15. Kf2) ({Predecessor:} 14. Bxb4 Qxb4+ 15. Kf2 Nd5 16. g3 Qb6+ 17. Kf3 f6 18. Qd2 fxe5 19. c5 Qb7 {½-½ (69) Soberano,J (2617)-Soltau,A (2620) ICCF email 2008}) 14... d5 (14... f6 $15 15. exf6 Bxd2+ 16. Kxd2 (16. Qxd2 d5 $15) 16... Nd5 $1 {[%mdl 512]}) 15. exd6 $11 {aiming for Rh3.} f5 16. Bxb4 $2 (16. Ng5 $11 {and White is okay.}) 16... fxe4 $19 17. Qd2 {[#]} Qxb4 $1 {[%mdl 512]} 18. Qxb4 Nc2+ 19. Kd2 Nxb4 20. Kc3 (20. a3 $142 Nd3 21. Bxd3 exd3 22. Rh3) 20... c5 ({And not} 20... Rxf4 21. Kxb4 Rf2 22. c5 $14) 21. a3 Nd3 22. Bxd3 exd3 23. Rad1 Rad8 24. Rxd3 Rxf4 25. Re1 {[#]} Rd4 $1 26. Rxd4 cxd4+ 27. Kxd4 Rxd6+ {[%mdl 4096] Endgame KRB-KR} 28. Kc5 Rb6 29. b4 Kf7 30. b5 Bb7 31. a4 {[#] And now a5 would win.} Ke7 $1 32. a5 Rd6 33. a6 (33. Re2 {was worth a try.}) 33... Bxg2 34. Kb4 g6 35. c5 Rd4+ 36. Kc3 Ra4 37. Kb3 Ra5 38. Kb4 Ra2 39. h5 (39. Kc3 $142) 39... Bd5 40. hxg6 hxg6 41. Rg1 Rb2+ 42. Ka5 Bc4 {Precision: White = 40%, Black = 80%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Jumabayev, Rinat"]
[Black "Lodici, Lorenzo"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2610"]
[BlackElo "2408"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,65,4,30,0,0,-18,22,9,33,-6,-8,-11,10,-4,16,0,48,-8,-7,-28,-25,-33,-24,-54,-25,-23,-13,-26,-3,0,-14,-76,-30,-43,-29,-113,-93,-175,-170,-212,-206,-206,-199,-306,-323,-279,527,510,696,739]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Bb4 6. e3 h6 7. Bxf6 {D35: Queen's Gambit Declined: Exchange Variation} (7. Bh4 c5 8. Bd3 Nc6 9. Nge2 c4 10. Bc2 g5 11. Bg3 Qe7 12. O-O O-O 13. a3 Bd6 14. Bxd6 Qxd6 15. f3 Re8 {1-0 (33) Sasikiran,K (2639)-Tari,A (2521) Berlin 2015}) 7... Qxf6 8. Qa4+ Nc6 9. Rc1 O-O {LiveBook: 3 Games} 10. a3 Bxc3+ $1 11. Rxc3 Qg6 $146 ({Predecessor:} 11... Re8 12. Nf3 Bg4 13. Be2 Bxf3 14. gxf3 {1-0 (32) Djuric,S (2489)-Efimov,I (2446) Cutro 2002}) 12. Ne2 Re8 13. Qc2 {White wants to play Qxg6.} Qd6 14. h3 g6 15. Qd2 Ne7 16. g4 f5 17. Ng3 (17. Rg1 $14) 17... c6 18. Bd3 Rf8 19. Bc2 Bd7 20. Qd1 Qf6 {[#] Strongly threatening ...fxg4.} 21. Qf3 Kh7 22. gxf5 Bxf5 23. Nxf5 Nxf5 24. Qg4 (24. Bxf5 $11 {remains equal.} Qxf5 25. Qxf5 Rxf5 26. h4) 24... Rae8 {aiming for ...Nxd4.} 25. Rg1 $1 h5 26. Qe2 (26. Qg5 $1 $11 {keeps the balance.}) 26... Kh6 27. Bxf5 (27. Rb3 $17 b6 28. Kd1) 27... Qxf5 $19 28. Qd2 Re4 29. Rh1 g5 30. Qe2 (30. b4 {was necessary.}) 30... Rh4 31. Rh2 Rxh3 $4 {[%mdl 8192] [#]} (31... Qb1+ $19 {and all is fine.} 32. Qd1 Qf5) 32. e4 $1 $18 {[%cal Re4f5]} Qg4 33. Rcxh3 {Precision: White = 24%, Black = 51%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Onischuk, Vladimir"]
[Black "Schroeder, Jan-Christian"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2610"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,66,24,19,15,5,14,30,13,20,21,15,30,12,18,26,15,43,0,0,0,0,-139,-133,-164,-152,-403,-195,-172,-86,-72,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. O-O O-O 6. Nbd2 d6 7. c3 a6 8. Bb3 Ba7 9. Re1 Ng4 10. Re2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} Kh8 11. h3 f5 12. exf5 {White has an edge.} Nh6 13. g4 Nxf5 $1 14. gxf5 Bxf5 15. Ne4 d5 {[#]} 16. Neg5 $146 ({Find the theoretical novelty and annotate with similar games:} 16. Ng3 Bxh3 17. Bg5 Qd6 {½-½ (67) Socko,B (2600)-Banusz,T (2621) Katowice 2016}) 16... Qd6 17. d4 exd4 {...d3 is the strong threat.} 18. Bc2 $1 dxc3 {White must now prevent ...Bxh3!} 19. Kg2 ({Don't play} 19. bxc3 h6 $17) (19. Bxf5 $11 Rxf5 20. Qc2) 19... h6 $17 20. Bxf5 Rxf5 21. Re6 $2 (21. Nh4 $17 {was called for.} Rf6 22. Qd3 hxg5 23. Bxg5 cxb2 24. Bxf6 bxa1=B 25. Bxa1) 21... Qf8 (21... Qc5 $2 22. Qd3 $19) (21... Qd7 $142 22. Re2 cxb2 23. Rxb2 Raf8) 22. bxc3 $19 hxg5 (22... Kg8 $1 $19 23. Qd3 hxg5) 23. Nxg5 $17 {[#]} Rxf2+ ({Black should try} 23... Kg8 $1 $17 24. f4 {[#]} Rxg5+ $1 {[%mdl 512]} 25. fxg5 Qf2+ 26. Kh1 Qf5) 24. Kg3 $11 {Threatening mate with Qh5+.The position is equal.} Qf5 $1 25. Qh5+ Kg8 26. Re8+ Rxe8 27. Qxe8+ Qf8 28. Qe6+ Kh8 29. Qg4 $1 {[%cal Rg4h5] Intending Qh5+ and mate.} Qf5 {Strongly threatening ...Qd3+.} (29... Kg8 $5 {[%cal Rc6e7]} 30. Qe6+ Kh8 $11) 30. Qh5+ Kg8 {( -> ...Rg2+!)} 31. Qe8+ Qf8 32. Qe6+ Kh8 33. Qg4 $1 {[%cal Rg4h5] White threatens Qh5+ and mate.} Qf5 {Precision: White = 70%, Black = 31%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Ovsejevitsch, Sergei"]
[Black "Ali Marandi, Cemil Can"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2596"]
[BlackElo "2526"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,84,13,0,0,-75,-76,-96,-28,-24,14,21,21,7,7,2,7,4,10,0,0,-1515,0,0,0,-7,-7,-12,-12,-12,-6,-6,-6,-15,-15,-83,-3,0,0,0,0,-2,-5,-5,-4,-145,-146,-152,-150,-148,-37,-37,-37,-38,-37,-37,-32,-38,-31,-38,-38]} 1. Nf3 Nf6 2. c4 c6 3. Nc3 d5 4. e3 e6 5. Qc2 Nbd7 6. b3 Bd6 7. Bb2 O-O 8. Be2 a6 9. d4 e5 10. cxd5 cxd5 11. dxe5 Nxe5 12. Rd1 Be6 13. O-O Rc8 {D45: Semi-Slav: 5 e3} 14. Qb1 {LiveBook: 18 Games} Re8 (14... Qc7 15. h3 Rfd8 16. Nd4 Nc6 17. Na4 Ne4 18. Bd3 Nxd4 19. Bxd4 Re8 20. Qb2 f6 21. Rc1 {½-½ (35) Fressinet,L (2710)-Saric,I (2661) Linares 2015}) 15. Rd2 $146 (15. Ng5 $11) ({Find the theoretical novelty and annotate with similar games:} 15. Qa1 Nxf3+ 16. Bxf3 Be5 17. Ne2 Bxb2 18. Qxb2 Bg4 19. Bxg4 Nxg4 20. Nf4 Nf6 21. Rd4 {1-0 (42) Ivanov,J (2395)-Gonzalez de la Torre,S (2384) Elgoibar 2004}) 15... Qa5 $17 {Black is better.} 16. Qa1 Nxf3+ (16... Ne4 $1 $17 {Strongly threatening ...Nxf3+.} 17. Nxe4 Nxf3+ 18. Bxf3 dxe4 19. Rxd6 exf3) 17. Bxf3 $11 Bb4 {[%cal Rb4c3]} 18. Rc1 {[#]} Ne4 $1 {[%cal Re4d2][%mdl 512]} 19. Bxe4 (19. Nxe4 dxe4) 19... dxe4 20. Rd4 Bxc3 21. Rxc3 Qg5 22. Rxe4 Bh3 $1 {[%csl Gh3][%cal Rg5g2]} 23. Rxe8+ Rxe8 {[%csl Gh3][%cal Rg5g2]} 24. Qf1 Rd8 $1 25. Rc1 Rd2 26. Bd4 Rxa2 27. Kh1 Be6 28. b4 h6 29. Ra1 Rc2 $40 {[%mdl 128] Black attacks.} 30. Ra5 (30. f3 $11) 30... Bd5 (30... Qh4 $17 31. f3 Bc4) 31. Rc5 Rd2 {( -> ...Qxg2+!)} 32. f3 b6 33. Rc8+ Kh7 {White should prevent ...Qxg2+!} 34. Rc1 $1 Qg6 35. h3 {[#]} (35. Qg1 $11) 35... Qg3 $1 $17 36. e4 {Hoping for Be3.} Rxd4 37. exd5 {[#]} Rxd5 (37... Qg5 $1 $17 38. Rd1 Qxd5 39. Rxd4 Qxd4 40. Qxa6 Qxb4) 38. Qxa6 {KQR-KQR. Black is slightly better.} Qf4 39. Rb1 b5 40. Qc6 Qd6 41. Qc2+ g6 42. Qe2 h5 {Precision: White = 50%, Black = 65%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Tregubov, Pavel V"]
[Black "Sreeves, Clement"]
[Result "1-0"]
[ECO "D71"]
[WhiteElo "2593"]
[BlackElo "2406"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,90,4,6,8,8,11,17,13,35,25,47,-3,89,97,103,74,77,73,206,198,189,166,175,163,186,187,282,262,272,266,255,111,152,160,137,91,122,94,82,74,73,75,115,64,77,66,70,54,118,70,107,65,88,71,116,76,162,167,144,116,138,108,526,523,546,541,470,463,1133,1109,2807,2785,29992,29993,29993,29994,29994,29995,29996,29996,29997,29998,29999]} 1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. e3 (5. Nf3 Bg7 6. O-O O-O 7. b3 dxc4 8. bxc4 c5 9. Bb2 cxd4 10. Nxd4 Nc6 11. e3 Bd7 12. Nxc6 Bxc6 13. Bxc6 {½-½ (13) Yu,Y (2753)-Grischuk,A (2761) Jiayuguan 2017}) 5... Bg7 6. Ne2 {D71: Fianchetto Grünfeld: 3 g3 d5 sidelines and 5 cxd5 (without Nf3)} O-O 7. O-O Nbd7 8. cxd5 {The position is equal.} Nxd5 9. e4 N5b6 10. Nbc3 c5 $146 (10... e5 $11) ({Predecessor:} 10... Nf6 11. h3 Re8 12. b3 Bd7 13. Bf4 Nh5 14. Be3 e5 15. Qd2 Qe7 16. Rad1 exd4 17. Bxd4 Bxd4 18. Nxd4 {1-0 (46) Biro,K (2235)-Siroky,J (2185) Slovakia 1994}) 11. d5 $16 c4 12. Be3 Ne5 13. a4 Bg4 (13... a5 $16) 14. f3 {[%cal Bf2f3,Bf3f4][%mdl 32]} Bd7 15. a5 Nc8 {[%cal Bb6c8,Bc8e7,Be7f5][%mdl 32]} 16. f4 $1 {[%cal Rf4e5]} Ng4 17. Bd4 e5 {[#]} (17... f6 {was worth a try.} 18. Na4 b6) 18. dxe6 $1 $18 Bxe6 19. e5 Ne7 {Now ...Nf5 and Black clings on.} 20. Bxb7 (20. h3 $18 {and White stays clearly on top.}) 20... Nf5 $16 {[#]} 21. Qd2 $1 f6 22. exf6 Bxf6 {And now ...Rb8 would win.} 23. Rfd1 Rb8 24. a6 Nxd4 25. Nxd4 Bc8 26. Bd5+ (26. Bf3 $16) 26... Kh8 $14 27. h3 Nh6 28. Kh2 (28. Qf2 $5 {[%cal Rd4c6]} Qb6 29. Na4 $16 (29. Bxc4 Bxh3 30. b3 Bg7 $11)) 28... Qd7 (28... Rb6 $14) 29. Bg2 Rd8 {[%cal Rf6d4]} 30. Nd5 $36 {[%mdl 2048] White is more active.} Bg7 31. Ra2 Qd6 32. Qa5 {Hoping for Nb5.} Be6 (32... Rf8 $16) 33. Nxe6 $18 Qxe6 34. Re1 Qd6 35. Re7 Nf5 $2 {[%mdl 8192]} (35... Rd7 $16 36. Rxd7 Qxd7) 36. Rxa7 Rb3 37. Qc7 Qf8 38. Rb7 {aiming for a7.} Rxg3 (38... Nd6 $142 39. Rxb3 cxb3) 39. a7 Rxg2+ 40. Kxg2 {[%cal Bh2g2,Bg2f1,Bf1e1,Be1d1][%mdl 32] White wants to mate with Qxd8!} Rxd5 41. a8=Q {White mates.} Rd2+ 42. Kf1 Ng3+ 43. Ke1 {[%csl Gb7][%cal Rc7g7]} Re2+ 44. Kd1 {[%csl Gb7][%cal Rc7g7]} Re8 {[#]} 45. Qxe8 $1 Qxe8 46. Qxg7# {Precision: White = 64%, Black = 36%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Kovchan, Alexander"]
[Black "Nabaty, Tamir"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "2587"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "40"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,19,54,47,57,45]} 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bd7 5. Nf3 Bc6 6. Bd3 Nd7 7. O-O Be7 8. Qe2 Ngf6 9. Nxf6+ (9. Neg5 $5 {[%cal Rg5f7]} h6 10. Ne4 $11) 9... Bxf6 {C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4} 10. c3 {Predecessor:} O-O $146 11. Bf4 Bxf3 12. Qxf3 c6 13. Rad1 a5 14. Rfe1 Re8 15. Bc2 Nf8 16. Be5 Qd5 17. Be4 Qd8 18. Bb1 a4 19. g3 Ra5 20. Bxf6 Qxf6 {1-0 (83) Dancevski,O (2345)-Drazic,S (2445) Star Dojran 1996} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Neiksans, Arturs"]
[Black "Meskovs, Nikita"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2582"]
[BlackElo "2495"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,111,19,0,0,0,1,0,0,0,21,12,55,0,0,0,45,0,124,111,132,120,122,115,527,529,714,287,277,277,267,252,273,222,213,209,216,214,216,219,210,206,218,220,217,207,252,244,269,260,790,759,844,254,235,0,848,263,834,826,740,324,418,262,322,313,363,356,1105,1187,1451,1381,1147,1233,987,845,1820,1772,1573,1732,6891,6370,4132,4171,29948,29946,12834,12773,7404,6428,12837,7404,29987,29965,29988,29989,29989,29990]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Nbd2 a6 7. Bb3 O-O 8. h3 Ba7 9. Nf1 h6 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} 10. Ng3 d5 11. exd5 Nxd5 {The position is equal.} 12. O-O Re8 13. Re1 Be6 14. Bc2 (14. Nh5 $14) 14... Qd6 $11 15. Nh4 {[#]} Nce7 $146 (15... Qe7 $5 {[%cal Re7h4]} 16. Nf3 Rad8 $11) ({Predecessor:} 15... Qd7 16. Qf3 Qe7 17. Nhf5 Qf8 18. Bb3 Rad8 19. Nh5 Bxf5 20. Qxf5 {½-½ (98) Giri,A (2778)-So,W (2767) Bilbao 2015}) 16. Qh5 (16. Ne4 $5 {[%cal Re4d6]} Qc6 17. Bb3 $11) 16... f5 (16... Qb6 $11 {remains equal.} 17. Rf1 Rad8) 17. d4 $1 $16 exd4 18. Nhxf5 (18. Bxf5 Bf7 $17) 18... Nxf5 19. Nxf5 Qd7 $2 {[%mdl 8192] [#]} (19... Bf7 $16 20. Qxf7+ Kxf7 21. Nxd6+ cxd6) 20. Nxh6+ $1 $18 {[%mdl 512]} gxh6 21. Qg6+ (21. Bxh6 $142 {Black must now prevent Re5.} dxc3 22. Re5 (22. Qg5+ Kh8 $16) 22... Bxf2+ 23. Kxf2 Qf7+ 24. Qxf7+ Kxf7 25. bxc3) 21... Qg7 22. Rxe6 Qxg6 23. Rxg6+ Kf7 24. Bxh6 ({Don't do} 24. Rxh6 $6 Re1+ 25. Kh2 dxc3 $16) 24... dxc3 25. Rg7+ Kf6 26. bxc3 {Hoping for Rg3.} Re2 27. Bb3 $1 {[%cal Rb3d5]} Rxf2 {[#]} 28. Kh1 $1 Rh8 29. Bxd5 {Threatens to win with Rf7+.} Rxh6 30. Rxc7 Ke5 31. Rd7 Kf4 32. Rxb7 Be3 $2 (32... Bc5 33. Re1 Kg5 34. Rg7+ Rg6) 33. Re1 Bc5 34. Re4+ $2 (34. Rc7) 34... Kf5 35. Re1 Kf4 $1 36. Rf7+ $2 (36. Rc7) 36... Kg3 $2 (36... Kg5 37. Rg7+ Rg6) 37. Rg7+ Kf4 38. Re4+ Kf5 39. g4+ Kf6 40. Rf7+ Kg5 41. Re5+ Kh4 $2 {[#]} (41... Kg6 42. Rxf2 Bxf2) 42. Rxf2 $1 Bxf2 {[%mdl 4096] Endgame KRB-KRB} 43. Kg2 Bg3 44. Rf5 Bd6 45. Bf7 Be7 46. Rh5+ Rxh5 47. Bxh5 {KB-KB} a5 48. c4 Kg5 49. Kf3 Kf6 50. h4 Bb4 51. g5+ {[%cal Bg4g5,Bg5g6][%mdl 32]} Kf5 52. Bg4+ Kg6 53. Bd7 Kh5 54. Be8+ {White mates.} Kxh4 55. g6 Bf8 {[#]} 56. c5 $1 {Precision: White = 61%, Black = 26%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Braun, Arik"]
[Black "Hambleton, Aman"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "2577"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,69,0,-8,60,55,68,59,62,56,53,32,43,33,41,33,41,41,33,34,44,41,36,38,35,0,59,51,59,0,51,47,291,275,308,301,324,339,397,367,518,515,505,479,563,543,524,507,661,663,638,606,579,579,677,666,683,562,702,697]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 b5 6. e4 {E20: Nimzo-Indian: 4 g3 and 4 f3} O-O 7. Nh3 {LiveBook: 12 Games} (7. e5 Ne8 8. f4 d6 9. Nf3 exd5 10. cxd5 Nc7 11. a4 Bb7 12. Bd3 h6 13. O-O Bxc3 14. bxc3 dxe5 15. axb5 {1-0 (32) Mamedyarov,S (2766)-Hou,Y (2651) Sharjah 2017}) 7... exd5 (7... bxc4 $11 8. Bxc4 exd5 9. Bxd5 Nxd5 10. Qxd5 Ba6) 8. cxd5 $14 {White is slightly better.} d6 9. Nf2 $1 a6 $146 ({Predecessor:} 9... c4 10. Be2 Bc5 11. O-O Qb6 12. a4 b4 13. a5 Qd8 {0-1 (47) Salas Martin,J (1828)-Ruiz Gomez,A (2362) Bilbao 2016}) 10. a4 bxa4 11. Rxa4 Nbd7 12. Be2 Nb6 13. Ra1 a5 14. O-O Ne8 15. Qc2 Bd7 16. b3 f5 17. Bb2 fxe4 18. fxe4 Nf6 (18... c4 $11) 19. Na2 Qe7 20. Rfd1 ({White should play} 20. Nxb4 $14 axb4 21. Qd3) 20... Rae8 (20... Nfxd5 $11 21. exd5 Rxf2 22. Kxf2 Re8) 21. Bf3 Bb5 $2 ({Better is} 21... Bc8 $14) 22. Nxb4 $18 axb4 {[#]} 23. e5 $1 {[%cal Re5f6][%mdl 512]} dxe5 24. d6 Qd7 {...c4 would now be nice for Black.} 25. Qxc5 e4 {[#]} (25... Nc8 {was worth a try.} 26. Bxe5 Qf5) 26. Bxf6 $1 {White is clearly winning.} (26. Qxb6 exf3 27. Ra7 Qf5 $16) 26... exf3 27. Be7 Be2 28. Bxf8 Bxd1 29. Rxd1 Qe6 {( -> ...Qe1+!)} 30. Be7 Nd7 31. Qd5 Qxd5 32. Rxd5 Rc8 33. gxf3 Rc3 34. Rd3 Ne5 {[#]} 35. d7 $1 {[%mdl 512] Precision: White = 86%, Black = 38%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Brunello, Sabino"]
[Black "Tang, Andrew"]
[Result "0-1"]
[ECO "D58"]
[WhiteElo "2566"]
[BlackElo "2475"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,110,22,35,15,43,39,34,23,34,34,26,22,33,8,13,14,16,0,0,0,0,0,12,4,12,-25,-21,-16,-16,-27,0,-9,-5,-11,-10,-10,-6,-13,-23,-11,-4,-66,-93,-43,-39,-131,-115,-142,-118,-112,-102,-138,-125,-244,-201,-270,-269,-268,-250,-312,-302,-368,-362,-446,-509,-463,-454,-619,-611,-4930,-4610,-29954,-6037,-29973,-29973,-29980,-29982,-29981,-29982,-29982,-29983,-29983,-29983,-29990,-29991]} 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 8. Be2 Bb7 9. Bxf6 Bxf6 10. cxd5 exd5 11. O-O Qe7 12. Qb3 Rd8 13. Rad1 c6 14. Rfe1 {D58: Queen's Gambit Declined: Tartakower Defence} Nd7 {[%cal Bb8d7,Bd7f8,Bf8e6][%mdl 32] LiveBook: 6 Games} 15. e4 {[#]} Nf8 $146 ({Find the theoretical novelty and annotate with similar games:} 15... dxe4 16. Bd3 Qf8 17. Nxe4 c5 18. d5 Bd4 19. Bc4 Ne5 20. Nxd4 Nxc4 21. Nf5 Ne5 {1-0 (38) Anand,V (2785)-Harikrishna,P (2726) Dubai 2014}) 16. e5 {White is slightly better.} Bg5 $1 17. g3 {Threatens to win with h4.} Qd7 18. Nxg5 hxg5 19. Bf1 Qg4 20. Ne2 Ne6 21. Qe3 Rac8 22. f4 Ba6 23. h3 Qf5 24. fxg5 Bxe2 ({But not} 24... Nxg5 $2 25. g4 $18) 25. Rxe2 Qxg5 26. Qf3 c5 27. dxc5 bxc5 {Strongly threatening ...Nd4.} 28. h4 Qg6 29. Rf2 $132 {[%mdl 2048] Hoping for h5. White is not keeping still} Nd4 30. Qf4 Rc7 31. Bh3 a5 32. e6 Re7 33. exf7+ Rxf7 34. Qxf7+ (34. Qg4 $1 $11 Qxg4 35. Bxg4) 34... Qxf7 $15 35. Rxf7 Kxf7 $11 {[%mdl 4096] Endgame KRB-KRN} 36. Kf2 (36. Rd3 $1 $15) 36... Ke7 $17 37. Bg4 Kd6 38. Rd2 Rf8+ 39. Ke3 Nc6 40. Rg2 (40. Rf2 $17 {might work better.} d4+ 41. Ke2 Rxf2+ 42. Kxf2) 40... d4+ {[%cal Bd5d4,Bd4d3][%mdl 32]} 41. Kd2 Ne5 42. Be2 c4 $1 43. g4 Kd5 44. h5 d3 45. Bd1 Kd4 46. g5 Rb8 47. Kc1 {[#]} c3 $1 48. bxc3+ Kxc3 49. h6 gxh6 50. gxh6 {[#]} Nc4 $1 {Black mates.} 51. Rg3 Na3 {[%csl Ga3][%cal Rb8b1]} 52. Bb3 {[#]} a4 $1 {[%mdl 512]} 53. h7 (53. Bxa4 Rb1#) 53... axb3 54. axb3 Rf8 {[%cal Rf8f1]} 55. Rg1 Nc2 {Precision: White = 33%, Black = 82%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Boruchovsky, Avital"]
[Black "Bogner, Sebastian"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2556"]
[BlackElo "2600"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,55,0,1,0,0,-5,12,0,9,6,17,31,9,15,7,13,65,56,64,68,58,25,25,42,185,168,169,155,283,116,231,79,110,107,104,86,154,162,373,354,491,472,752,740]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h4 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} (6. h3 e6 7. g4 h6 8. Bg2 Be7 9. Be3 Nc6 10. f4 Nd7 11. O-O O-O 12. Nf3 b5 13. Ne2 Bb7 14. Ng3 Rc8 15. c3 Na5 16. Bf2 {½-½ (46) Harikrishna,P (2737)-Navara,D (2737) Biel 2017}) 6... e5 7. Nb3 Be7 {LiveBook: 8 Games} 8. Be2 {The position is equal.} Be6 9. f4 $146 ({Predecessor:} 9. g4 h6 10. Bf3 g6 11. Be3 Nbd7 12. Rg1 Qc7 13. Qd2 h5 14. g5 Ng4 15. O-O-O Nxe3 16. Qxe3 {0-1 (41) Ferdiman,T-Karavade,E (2316) Kuala Lumpur 2006}) 9... b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 10. g4 (10. f5 $5 {[%cal Rf5e6]} Bc8 11. Bf3 $11) 10... b4 11. Nd5 $1 Nxe4 12. Nxe7 Qxe7 13. f5 $1 {[%cal Rf5e6]} Bxb3 14. axb3 Qb7 (14... Ng3 $11 15. Qd5 Nxh1) 15. Bf3 $14 {[%mdl 1024] aiming for Ra5. White has compensation.} Nd7 16. Be3 O-O 17. Qd3 d5 18. O-O-O Nb6 (18... Nef6 $1 $14 19. Bxd5 Qxd5 20. Qxd5 Nxd5 21. Rxd5 Nf6 22. Rxe5 Nxg4) 19. Bxe4 dxe4 20. Qd6 $36 {[%mdl 2048] White is really pushing.} Rab8 {[#]} (20... Nc8 $16 21. Qxe5 Qc6) 21. f6 ({Less strong is} 21. Qxe5 Nd7 $16) (21. h5 $1 $18 {and the rest is easy.}) 21... Rfe8 $16 22. Rh2 $2 (22. Rhf1 $18 {has better winning chances.}) 22... Re6 23. Qd8+ Re8 {[#]} 24. Rhd2 $1 {Strongly threatening Qxe8+!} h6 ({Worse is} 24... Rexd8 25. Rxd8+ Rxd8 26. Rxd8#) (24... h5 $142 25. Qd6 Nc8) 25. Qd6 {Hoping for fxg7.} a5 $2 (25... Nc8 {was worth a try.} 26. Qc5 gxf6) 26. g5 $18 {And now fxg7 would win.} Re6 27. Qc5 {Black must now prevent Rd8+.} Qc8 {[#]} (27... Kh7 $142 28. fxg7 Kxg7 29. gxh6+ Kh7) 28. Qe7 $3 {[%mdl 512] Precision: White = 56%, Black = 38%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Kunin, Vitaly"]
[Black "Baldauf, Marco"]
[Result "0-1"]
[ECO "D70"]
[WhiteElo "2551"]
[BlackElo "2460"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,90,35,30,0,0,0,1,0,0,0,0,0,6,12,4,-17,0,0,7,-14,21,0,0,0,0,0,16,21,30,26,32,0,0,-17,0,-39,-24,-81,-50,-57,-18,-50,-38,-50,-31,-38,0,0,0,-28,-9,-51,-45,-67,0,-105,-85,-196,0,-5,0,-61,-67,-130,-115,-108,-108,-131,-99,-29980,-29981,-29984,-29985,-29990,-29991,-29992,-29979,-12841,-12838]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. e3 O-O 5. Be2 c5 6. d5 d6 7. Nc3 e6 8. Nd2 {E61: King's Indian: Early deviations for White, including Smyslov System} (8. O-O Re8 9. e4 exd5 10. exd5 Bf5 11. Bd3 Ne4 12. Nxe4 Bxe4 13. Bxe4 Rxe4 14. Qd3 Re8 15. Bf4 Na6 {½-½ (56) Nakamura,H (2785)-Mamedyarov,S (2800) Paris 2017}) 8... Na6 9. O-O Nc7 {[%cal Re6d5]} 10. e4 {The position is equal.} a6 $146 ({Predecessor:} 10... exd5 11. cxd5 Nfe8 12. a4 b6 13. Nc4 f5 14. exf5 Rxf5 15. a5 Rb8 16. axb6 axb6 {1-0 (71) Dreev,A (2654)-Margvelashvili,G (2540) Las Vegas 2014}) 11. a4 b6 12. Re1 Rb8 13. dxe6 Nxe6 14. Nb3 Bb7 15. Bf1 Re8 16. f3 h5 17. Be3 h4 18. Qd2 Nh5 19. Nd5 g5 20. Nc1 Bd4 21. Ne2 {[%cal Re2d4]} Be5 22. Bf2 Bxd5 23. exd5 Neg7 {[%cal Be6g7,Bg7f5,Bf5d4][%mdl 32]} 24. Nc3 Nf5 25. Bd3 (25. Rab1 $11 {remains equal.}) 25... Nd4 $17 26. Bxd4 Bxd4+ 27. Kf1 {Hoping for Rxe8+.} Nf4 28. g3 Nxd3 29. Qxd3 hxg3 30. hxg3 Qf6 $40 {[%mdl 128] Black is up to no good.} 31. Ne4 Qg6 32. Rab1 Kg7 33. Kg2 $1 f5 ({Black should try} 33... g4 $15 34. fxg4 Re5) 34. Nd2 (34. Nf2 $11 {keeps the balance.}) 34... Qf6 35. Nf1 {[#]} (35. Re2 $17) 35... Re5 $2 (35... g4 $1 $19 36. Ne3 gxf3+ 37. Kxf3 Re4) 36. f4 $11 Re7 {White must now prevent ...Rbe8.} 37. fxg5 (37. Ne3 $11 Bxe3 38. Rxe3) 37... Qxg5 $15 38. Nd2 (38. Rxe7+ $15 Qxe7 39. b4) 38... Rbe8 {[%cal Bb8e8,Be8e7,Be7e3][%mdl 32]} 39. Nf3 {[#]} Qg4 $1 {And now ...Re3 would win.} 40. Rxe7+ Rxe7 41. Nxd4 $4 {[%mdl 8192]} (41. Re1 $17 Rxe1 42. Nxe1) 41... cxd4 $17 {KQR-KQR} 42. Rd1 Kg6 43. Kf1 Re3 44. Qd2 Qf3+ 45. Kg1 Re2 {Precision: White = 29%, Black = 60%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Shyam, Sundar M"]
[Black "Harsha Bharathakoti"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "2547"]
[BlackElo "2404"]
[Annotator "TA"]
[PlyCount "148"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,148,-26,-18,-81,-77,-88,-81,-79,-83,-83,-82,-94,-79,-75,-35,-38,-54,-87,-79,-91,-91,-91,-82,-73,-73,-71,-70,-70,-63,-86,-77,-73,-15,-43,-41,-42,-46,-52,-41,-94,-105,-93,-93,-92,-98,-92,-11,-17,-17,-56,-89,-85,-85,-87,-92,-102,-102,-152,-147,-135,-116,-137,-102,-106,-113,-126,-118,-96,-99,-87,-93,-99,-83,-81,-86,-83,-74,-91,-64,-69,-67,-154,-118,-90,-95,-450,-444,-420,-415,-471,-473,-420,-397,-365,-329,-966,-725,-880,-607,-614,-585,-1770,-429,-1482,-628,-3195,-3009,-2408,0,-466,-473,-3236,-352,-3195,-2601,-5460,-5073,-1518,-1387,-29971,-29971,-29972,-29973,-29972,-29973,-29975,-29973,-29975,-29979,-29979,-29980,-29986,-29982,-29982,-29983]} 1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. e5 dxe5 5. Nxe5 a6 6. a4 Qc7 7. Nc4 {B50: Sicilian: 2...d6, Miscellaneous} Nc6 8. d3 Be6 {LiveBook: 4 Games} 9. Ne3 (9. g3 $11 {remains equal.}) 9... Rd8 $17 10. g3 $146 {[#]} ({Predecessor:} 10. Bd2 g6 11. g3 h5 12. Bg2 h4 13. O-O Bg7 14. Re1 Qd7 {0-1 (44) Kotsur,P (2569)-Sakaev,K (2656) Moscow 2004}) 10... c4 $1 {[%mdl 512]} 11. Bg2 (11. dxc4 Rxd1+) 11... cxd3 12. cxd3 g6 13. O-O Bg7 14. Ne2 O-O 15. Nf4 Bc8 16. Bd2 e5 17. Nfd5 Nxd5 18. Nxd5 Qd6 19. Bg5 f6 20. Be3 Be6 21. Nc3 {[%cal Bd5c3,Bc3a4,Ba4c5][%mdl 32]} f5 22. Bb6 Rd7 (22... Qxd3 $6 23. Bxd8 Rxd8 24. Qxd3 $11) 23. a5 Nb4 (23... Qxd3 $17 {Threatening ...Rff7.} 24. Qxd3 Rxd3) 24. Na4 {Black must now prevent Bc5.} Nxd3 {[#] Strongly threatening ...Qb4.} 25. Nc5 $1 {[%mdl 512]} e4 ({Avoid the trap} 25... Nxb2 $2 26. Qxd6 Rxd6 27. Bc7 $18) (25... Nxc5 26. Qxd6) 26. Nxd7 Qxd7 27. f3 (27. Qd2 $15) 27... Bd4+ 28. Kh1 Bxb6 $1 ({But not} 28... Bxb2 $6 29. Rb1 $11) 29. axb6 e3 $1 30. f4 Nf2+ (30... Re8 $17 31. Qc2 Bf7) 31. Rxf2 $1 $11 exf2 32. Qxd7 Bxd7 {[%mdl 4096] Endgame KRB-KRB} 33. Rf1 Bc6 $1 34. Bxc6 bxc6 35. Rxf2 $17 {KR-KR} Rb8 36. Kg1 Rxb6 37. Kf1 Kf7 38. Re2 c5 39. Rc2 Rb5 40. Ke2 {[#]} Ke6 $1 41. Kd3 Kd5 42. Kc3 Rb4 {...Rc4+ is the strong threat.} 43. b3 Re4 44. Rd2+ Kc6 45. Rd8 {[#]} Re2 $1 {[%cal Re2h2]} 46. h4 Re3+ 47. Kc4 $1 Rxg3 {Hoping for ...Rg4.} 48. Rf8 (48. Ra8 $15) 48... Rg4 49. Rf6+ Kd7 50. Kxc5 $2 {[%mdl 8192]} (50. h5 $17) 50... Rxh4 $19 51. Rxa6 Rxf4 52. b4 Rf1 53. b5 Rc1+ 54. Kd5 Kc7 55. Ra7+ $2 (55. Rf6) 55... Kb6 56. Rxh7 Rg1 57. Ke5 Kxb5 58. Rc7 Rg4 59. Rc1 (59. Rc8 $142) 59... Kb4 60. Rc8 Rc4 61. Rg8 Rg4 (61... Re4+ $142 62. Kf6 Rg4) 62. Rc8 $1 f4 63. Kd4 (63. Rb8+ $142 Kc3 64. Ke4) 63... Kb3 $2 (63... Rg3 64. Ke4 g5) 64. Rc3+ $2 (64. Ke4 g5 65. Rd8) 64... Kb2 65. Rf3 Kc2 66. Ke4 g5 67. Ra3 Kd2 {Black mates.} 68. Rb3 Ke2 69. Rb2+ Kf1 70. Rb1+ Kg2 71. Rb2+ Kg3 72. Kf5 f3 {[%cal Bf4f3,Bf3f2][%mdl 32]} 73. Ra2 Rb4 74. Kxg5 f2 {Precision: White = 40%, Black = 70%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Kantans, Toms"]
[Black "Korchmar, Vasiliy"]
[Result "1/2-1/2"]
[ECO "A20"]
[WhiteElo "2541"]
[BlackElo "2398"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,55,-16,-15,-27,-27,-28,-28,-19,-24,-23,-21,-23,-19,-26,-22,-39,-12,-31,0,7,35,-30,20,-35,-10,-4,0,0,9,9,6,0,0,-107,-87,-66,-29,-48,-41,-25,0,0,0,0,0,0,0,0]} 1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 c6 5. Qa4 (5. e3 O-O 6. Nge2 d5 7. cxd5 Nxd5 8. d4 exd4 9. Nxd5 cxd5 10. Nxd4 Nc6 11. Nb3 Bb4+ 12. Bd2 Bf5 13. O-O Be4 {½-½ (31) Grigoriants,S (2580)-Jakovenko,D (2732) Gibraltar 2016}) 5... O-O {LiveBook: 4 Games} 6. b4 {A23: English Opening: 1...e5 2 Nc3 Nf6 3 g3 c6} Be7 7. Nf3 $146 ({Predecessor:} 7. Qb3 d6 8. Rb1 Be6 9. Nf3 h6 10. O-O Nbd7 11. d3 d5 12. cxd5 cxd5 {½-½ (58) Voiska,M (2366)-Shneider,A (2551) Cappelle-la-Grande 2000}) 7... e4 8. Nd4 {Black has an edge.} d5 9. cxd5 Nxd5 10. Nxd5 cxd5 11. Bb2 Qb6 12. b5 Bf6 13. O-O Bd7 14. Rab1 a6 {[%cal Ra6b5]} 15. d3 (15. Rfc1 $14) 15... exd3 16. exd3 (16. Bxd5 $11 Bh3 17. Rfe1) 16... Ra7 {[%cal Ra6b5]} 17. Ne2 ({Avoid the trap} 17. Bxd5 $2 axb5 18. Qb4 Ra4 $19) 17... axb5 18. Qb3 Bxb2 19. Rxb2 d4 20. a4 {[%cal Ra4b5]} Ra5 21. Qb4 {[#]} (21. Rfb1 $11 {remains equal.}) 21... Na6 $1 $17 {[%cal Ra6b4]} 22. Qe7 Bc6 (22... Nc5 {keeps more tension.} 23. axb5 Re8 24. Qh4 Rxb5 25. Rxb5 Bxb5 26. Nxd4 Bxd3 27. Rd1 Bg6) 23. axb5 Bxg2 24. Kxg2 Rxb5 25. Rxb5 {The position is equal.} Qxb5 26. Nxd4 Qxd3 27. Qxb7 Qxd4 28. Qxa6 {Precision: White = 42%, Black = 38%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Sanal, Vahap"]
[Black "Mu, Ke"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2539"]
[BlackElo "2411"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,106,33,20,29,0,-2,-20,-20,-46,-42,-44,-43,-46,-50,-45,-29,-39,-21,-62,-61,-59,-50,-59,0,0,0,-10,0,-40,-48,-37,-18,-33,-4,-10,0,0,32,22,8,0,0,0,0,0,0,-2,0,0,0,-27,0,-22,0,-30,-26,-39,-39,-54,-56,-56,-56,-81,-74,-134,-138,-139,-136,-193,-193,-187,-187,-172,-171,-208,-195,-593,-159,-581,-992,-2083,-495,-2088,-1908,-1000,-1037,-29977,-29978,-5293,-29979,-29974,-29976,-3449,-2356]} 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 d5 5. c4 c6 6. Bg2 O-O 7. O-O Bg4 8. d3 Nbd7 {A11: English Opening: 1...c6} 9. Nc3 (9. Nbd2 Re8 10. h3 Bxf3 11. Nxf3 e5 12. cxd5 cxd5 13. e3 a5 14. a3 Qb6 15. Rb1 Rad8 16. Re1 e4 17. dxe4 dxe4 18. Bd4 {½-½ (30) Bruzon Batista,L (2652)-Zherebukh,Y (2632) Saint Louis 2017}) 9... e5 10. h3 Bxf3 {The position is equal.} 11. Bxf3 {[%cal Rc4d5]} d4 12. Ne4 Nxe4 13. Bxe4 a5 14. Bg2 {[#]} h5 $146 ({Find the theoretical novelty and annotate with similar games:} 14... Re8 15. Rb1 Nc5 16. a3 {1-0 (86) Sanal,V (2475)-Esen,B (2528) Antalya 2017}) 15. h4 Nf6 16. b4 axb4 17. Qb3 Re8 18. Qxb4 e4 (18... Bf8 $15 19. Qb3 Nd7) 19. Bc1 Qc8 20. Bg5 e3 21. Bxf6 (21. fxe3 {seems wilder.} Ng4 22. Rab1 f6 23. Bf4 Nxe3 24. Bxe3 Rxe3 25. Qxb7 Qxb7 26. Rxb7 Rxe2 27. Bxc6 Raxa2 28. Bd5+) 21... Bxf6 22. f4 Qc7 (22... Qg4 $5 {[%cal Rg4e2]} 23. Rf3 Ra7 $15) 23. Rfb1 Re7 24. a4 Qd7 25. Kh2 Qg4 26. Bf3 Qf5 27. Qe1 Rd7 28. Bg2 {[#] And now Bh3 would win.} Qc5 29. Bh3 Rc7 30. Rb3 Be7 31. Qb1 Ra7 32. Ra2 (32. a5 $5) 32... Qd6 33. Qe1 Bd8 34. Bg2 Re7 35. a5 f6 36. Qb4 Qxb4 37. Rxb4 {Black should prevent a6!} Rxa5 38. Rab2 Ra7 39. f5 (39. c5 $142) 39... gxf5 $17 40. c5 Bc7 41. Rxd4 (41. Bh3 $17) 41... Rg7 $19 42. Rb1 Bxg3+ 43. Kh1 Rg4 44. Rd7 Rxh4+ 45. Kg1 $2 (45. Bh3) 45... Bf2+ 46. Kf1 Rg4 47. Rd8+ Kg7 (47... Kh7 $142 {( -> ...b5!)} 48. Rd7+ Kg6) 48. Rd7+ (48. Rb8 $142 Rb4 49. Rc1) 48... Kh6 49. Rd8 h4 50. Rh8+ Kg7 51. Rh5 f4 52. d4 {[#]} f5 $1 53. Rc1 (53. Rxf5 h3) 53... Ra8 {Precision: White = 40%, Black = 56%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Zakhartsov, Viacheslav V"]
[Black "Stocek, Jiri"]
[Result "1/2-1/2"]
[ECO "E46"]
[WhiteElo "2539"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "37"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,37,11,16,18,19,9,20,20,10,15,19,12,9,9,29,17]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nge2 Re8 6. a3 Bf8 7. Ng3 d5 8. Be2 {E46: Nimzo-Indian: Rubinstein: 4 e3 0-0 5 Ne2 without early Bd3} dxc4 9. O-O c5 10. dxc5 Bxc5 11. Bxc4 Nbd7 12. b4 Be7 {LiveBook: 4 Games} 13. Bb2 a5 14. Qb3 axb4 15. axb4 Rxa1 16. Rxa1 {[#]} Nb6 $146 17. Rd1 Bd7 18. Be2 Qb8 19. b5 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Zeng, Chongsheng"]
[Black "Mandizha, Farai"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "2537"]
[BlackElo "2392"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,75,19,4,29,27,30,21,27,29,30,34,31,32,30,23,68,64,95,40,40,41,106,70,68,53,44,90,72,-88,-65,-59,-35,-29,-39,-38,-23,-27,-28,-33,-35,-24,-4,0,0,0,0,0,0,0,0,-56,1053,864,1035,986,12839,12837,5497,5509,29989,29990,29996,29997,29997,29998]} 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. c4 Nf6 6. Nc3 O-O 7. cxd5 {LiveBook: 88 Games} a6 {C01: French: Exchange Variation} (7... Re8+ 8. Be2 Nbd7 9. Bg5 h6 10. Bh4 Nb6 11. O-O Be7 12. Bxf6 Bxf6 13. Qb3 a6 14. a4 Nxd5 15. Bc4 {1-0 (39) Lysyj,I (2686)-Savchenko,B (2599) Wroclaw 2014}) 8. Be2 b5 9. Bg5 {[%cal Bc1g5,Bg5h4,Bh4g3,Bg3e5][%mdl 32]} Re8 {The position is equal.} 10. O-O Nbd7 $146 ({Predecessor:} 10... Bb7 11. Bd3 Nbd7 12. Qc2 h6 13. Bh4 b4 14. Ne4 Bxd5 15. Rfe1 {1-0 (72) Gvetadze,S (2287)-Kamadadze,Z (2208) Batumi 2003}) 11. Nd2 h6 12. Bh4 g5 13. Bg3 b4 14. Na4 Nxd5 15. Bf3 ({White should try} 15. Nc4 $16) 15... N7f6 $14 16. Nc4 Bf5 (16... g4 $14 17. Bxd5 Nxd5) 17. Be5 Rb8 18. Rc1 g4 19. Bxd5 Nxd5 20. Ne3 $2 (20. Nc5 $16 {stays on course.}) 20... Nxe3 $17 21. fxe3 Bxe5 22. Rxf5 Bg7 $1 23. Qxg4 Rxe3 24. Rf4 Qe8 25. Rcf1 Re1 {[#] Threatens to win with ...Rxf1+.} 26. Nc5 Rxf1+ 27. Kxf1 Qe3 28. g3 $40 {[%mdl 128] White attacks.} ({Don't play} 28. Re4 Qc1+ 29. Re1 Qc4+ 30. Re2 Rd8 $17) 28... Qc1+ 29. Kg2 {Hoping for Rxf7!} Qxb2+ 30. Kh3 $1 ({Reject} 30. Rf2 Qxd4 31. Qf5 Qc4 $17) 30... Qxa2 {And now ...Rd8 would win.} 31. d5 (31. Nd7 $11 h5 32. Nf6+ Kf8 33. Nd7+ Kg8 34. Nf6+ Kf8 35. Nd7+ Kg8) 31... Qc2 $2 {[%mdl 8192] [#]} (31... Qxd5 $15 32. Nd7 h5 33. Nf6+ Kh8 34. Qxg7+ Kxg7 35. Nxd5 a5) 32. Rxf7 $1 $18 {[%csl Gf7][%cal Rg4g7][%mdl 512]} Qh7 (32... Kxf7 33. Qe6+) 33. Nd7 {Nf6+ would kill now.} h5 34. Qe6 {[%csl Gd7][%cal Rf7f8]} Kh8 35. Nxb8 {Intending Nc6 and mate.} b3 36. Rxc7 {White mates.} Qd3 37. Qe8+ Kh7 38. Qxh5+ {Precision: White = 58%, Black = 50%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Berelowitsch, Alexander"]
[Black "Kryakvin, Dmitry"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2527"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,76,-36,-34,-43,0,0,13,0,0,8,54,0,0,-11,-2,-3,32,35,53,2,7,12,2,0,0,-3,0,0,0,0,0,0,0,3,4,11,1,0,0,0,0,0,0,0,0,0,0,0,0,-56,-56,-59,-59,-60,-56,-164,-165,-85,-174,-209,-197,-191,-195,-252,-251,-270,-259,-215,-216]} 1. d4 d5 2. Nc3 Nf6 3. Bf4 e6 4. e3 Bb4 5. Bd3 (5. Nge2 O-O 6. a3 Bd6 7. Ng3 c5 8. dxc5 Bxc5 9. Bd3 Nc6 10. O-O Bd6 11. Bg5 h6 12. Bxf6 Qxf6 {0-1 (74) Navara,D (2734)-Wojtaszek,R (2734) Berlin 2015}) 5... c5 6. dxc5 {D00: 1 d4 d5: Unusual lines} Nc6 7. Nf3 Nd7 8. O-O $146 {The position is equal.} ({Predecessor:} 8. Be2 Nxc5 9. O-O Bxc3 10. bxc3 f6 11. c4 dxc4 12. Qxd8+ Nxd8 {0-1 (83) Secrieru,I (1983)-Girard,E (2277) ICCF email 2009}) 8... Bxc3 9. bxc3 {[#] Black must now prevent Bd6.} e5 10. e4 (10. Bg3 $14) 10... exf4 $11 11. exd5 Ne7 $1 {And now ...0-0 would win.} 12. d6 {aiming for Re1.} O-O {[#] Threatens to win with ...Nc6.} 13. dxe7 Qxe7 14. Qc1 (14. Re1 $14 Qxc5 15. Qd2) 14... Qxc5 15. Qxf4 Qxc3 16. Qd6 Nf6 17. a4 Bg4 18. Qf4 Rfe8 19. h3 Bh5 20. Rab1 Re7 21. Rb3 Qc7 22. Qxc7 Rxc7 23. Ne5 Re8 24. f4 Bg6 $1 25. Nxg6 hxg6 26. a5 Ree7 27. Rfb1 Nd5 28. g3 Nc3 29. Rf1 ({White should play} 29. R1b2 $11) 29... Ne4 $15 {Hoping for ...Nd2.} 30. Bxe4 Rxe4 {[%mdl 4096] Endgame KRR-KRR} 31. Rf2 Ra4 32. Rd3 ({White should try} 32. Rb5 $15) 32... Rxa5 $19 33. Rd8+ Kh7 34. Re2 g5 35. fxg5 Rxg5 36. g4 (36. Kf2 $142) 36... Rgc5 37. Kf1 Rc3 38. h4 R3c4 {Precision: White = 55%, Black = 62%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Sulskis, Sarunas"]
[Black "Kulaots, Kaido"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2519"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,107,-14,10,-3,0,7,13,0,17,5,22,16,16,0,4,0,7,-4,0,-7,0,0,0,0,0,0,0,-7,-6,-6,0,-7,-7,-11,0,0,0,0,0,0,0,0,0,0,0,0,0,4,4,-8,0,-10,117,0,0,0,0,0,23,23,24,5,5,5,5,5,8,4,25,25,61,0,0,0,0,0,0,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. c3 d6 5. h3 O-O 6. e3 Nc6 {LiveBook: 37 Games} 7. Bb5 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} (7. Be2 Nd7 8. O-O e5 9. Bh2 f5 10. a4 Qe7 11. Na3 Nd8 12. dxe5 Nxe5 13. Nc4 Nxf3+ 14. Bxf3 Nf7 {½-½ (23) Tomashevsky,E (2711)-Salem,A (2656) Sharjah 2017}) 7... Bd7 $146 ({Predecessor:} 7... Nd7 8. Bh2 a6 9. Ba4 b5 10. Bc2 Bb7 11. O-O e5 12. Nbd2 f5 13. dxe5 Ncxe5 14. Nd4 Qe7 {½-½ (43) Sergeev,V (2483)-Mladenov,P (2396) Guben 2011}) 8. a4 Qe8 9. O-O e5 10. Bh2 Rd8 11. Nbd2 a6 12. Bxc6 Bxc6 13. dxe5 Bxf3 14. Qxf3 (14. Nxf3 $5 {[%cal Re5f6]} dxe5 15. Qb3 $14) 14... dxe5 15. Rfd1 e4 16. Qe2 Qc6 17. Be5 Rfe8 18. Bd4 Nd7 19. Qc4 Qxc4 20. Nxc4 Bf8 21. b4 b6 22. b5 f6 23. g4 Kf7 24. Kg2 (24. g5 $5) 24... Ra8 25. Nd2 Bd6 26. c4 f5 27. Nb3 axb5 28. cxb5 Red8 29. a5 bxa5 30. Nxa5 Rdb8 31. Nc4 {Ba7 is the strong threat.} Be7 {[#]} (31... Rxa1 $11 32. Nxd6+ cxd6 33. Bxa1 Ke6) 32. Ra6 (32. Ba7 $1 $16 {[%cal Ra7b8]} Rd8 33. Ra6) 32... Rxa6 $11 33. bxa6 Ra8 34. Ra1 c5 35. Bb2 Ra7 36. Ne5+ Nxe5 37. Bxe5 Bf6 38. Bxf6 Kxf6 39. gxf5 gxf5 {[%mdl 4096] Endgame KR-KR} 40. Ra5 Ke6 41. Kg3 (41. Rxc5 $14 Rxa6 42. Kg3) 41... Kd5 {The position is equal.} 42. Kf4 Kc4 $1 43. Kxf5 Kb4 $1 {[%cal Rb4a5]} 44. Ra1 c4 $1 {[%cal Bc5c4,Bc4c3,Bc3c2][%mdl 32]} 45. Kxe4 c3 $1 {[%cal Rc3c2] White must now prevent ...c2.} 46. Rb1+ Kc4 47. Rb6 c2 48. Rc6+ Kb3 {[#] aiming for ...Rxa6!} 49. Kd3 Rd7+ 50. Ke2 Kb2 51. Rb6+ Kc3 {Strongly threatening ...Rc7.} 52. Rc6+ Kb2 53. Rb6+ Kc3 {Hoping for ...Rc7.} 54. Rc6+ {Precision: White = 62%, Black = 73%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Lei, Tingjie"]
[Black "Alekseenko, Kirill"]
[Result "1/2-1/2"]
[ECO "B09"]
[WhiteElo "2514"]
[BlackElo "2575"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,107,37,21,19,11,23,23,31,3,14,0,0,0,0,0,0,0,12,16,53,39,31,39,59,35,33,35,35,17,25,23,28,24,19,31,28,27,43,43,42,45,38,36,38,12,12,18,13,13,10,12,28,27,30,22,31,19,26,22,21,13,27,26,24,0,51,28,16,5,7,4,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Bd3 Na6 7. O-O c5 8. d5 Bg4 9. h3 Bxf3 10. Qxf3 Nb4 {B09: Pirc Defence: Austrian Attack} 11. a3 (11. a4 Nd7 12. Qe2 Nxd3 13. Qxd3 Qb6 14. Kh1 Rac8 15. a5 Qa6 16. Qxa6 bxa6 17. Bd2 Rb8 18. b3 {0-1 (52) Sethuraman,S (2640)-Malakhov,V (2694) Berlin 2015}) 11... Nxd3 12. Qxd3 Nd7 {White has an edge.} 13. Nd1 a6 $146 ({Find the theoretical novelty and annotate with similar games:} 13... Qc7 14. c4 b5 15. Ne3 bxc4 16. Nxc4 Nb6 17. Rb1 Rab8 18. b3 Nxc4 19. Qxc4 {0-1 (30) Bertusi,M (2000)-Slogar,D (2314) Sisak 2013}) 14. a4 {[#]} b5 $1 {[%mdl 512]} 15. axb5 Qb6 $1 {Hoping for ...c4+.} 16. Qa3 {[%cal Rb5a6]} (16. Rxa6 $2 Rxa6 17. bxa6 c4+ 18. Be3 (18. Qe3 $2 Bd4 $19) 18... cxd3 $19) (16. bxa6 $2 c4+ 17. Be3 (17. Qe3 $2 Bd4 $19) 17... cxd3 $19) 16... Qxb5 17. Qf3 e6 18. Ne3 Nb6 19. f5 exf5 ({Wrong is} 19... Bxb2 $2 20. Bxb2 Qxb2 21. Rab1 $18 (21. fxe6 fxe6 22. Qg4 exd5 $11)) 20. exf5 Rfe8 ({Don't go for} 20... Bxb2 $2 21. Bxb2 Qxb2 22. Rab1 $18) 21. Ng4 {[#] Black must now prevent fxg6.} Qe2 $1 22. fxg6 fxg6 23. Nf6+ Bxf6 $1 24. Qxf6 Rf8 25. Qe6+ Qxe6 26. dxe6 Rxf1+ 27. Kxf1 $11 {[%mdl 4096] Endgame KRB-KRN} Kg7 28. Bf4 Rf8 29. g3 {Strongly threatening e7.} Nc8 30. e7 Nxe7 31. Kg2 Nd5 32. Bxd6 Ne3+ 33. Kg1 Rf5 34. g4 Rd5 35. Rxa6 Nxc2 36. Rc6 Nd4 37. Rc7+ Kf6 38. Be7+ Ke6 39. Bf8 Nf3+ 40. Kf2 Ne5 41. Rxh7 Nd3+ (41... Rd8 $11 42. Re7+ Kf6 43. g5+ Kf5) 42. Kf3 $14 Nxb2 43. Re7+ {The position is equal.} Kf6 44. h4 Rd3+ 45. Ke2 {Rb7 is the strong threat.} Rd8 46. g5+ Kf5 47. Bg7 Nc4 48. Bc3 Rd5 49. Rf7+ Kg4 50. Rg7 Ne5 51. Bxe5 Rxe5+ 52. Kd3 Re6 53. Rh7 Re1 54. Rh6 {Precision: White = 77%, Black = 72%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Kvon, Andrey"]
[Black "Saveliev, Alexei"]
[Result "1-0"]
[ECO "E48"]
[WhiteElo "2500"]
[BlackElo "2396"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,121,18,20,16,6,37,32,19,4,22,14,31,0,42,27,53,68,104,102,109,110,115,110,98,110,126,116,109,109,118,116,175,163,160,162,168,168,174,175,175,175,172,169,181,168,170,168,166,146,146,134,121,94,107,103,92,99,162,173,167,165,169,129,139,130,130,148,149,36,36,36,33,36,39,33,281,282,276,265,217,109,222,157,620,632,528,523,802,775,601,8,8,8,1258,536,1281,1222,29962,12775,29986,29987,29987,29988]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nge2 dxc4 7. Bxc4 e5 8. a3 {E48: Nimzo-Indian: Rubinstein: 5 Bd3 d5 including 6 Ne2, but excluding 6 a3} exd4 9. axb4 dxc3 10. Qxd8 Rxd8 11. bxc3 {LiveBook: 3 Games} Nbd7 {[%cal Bb8d7,Bd7e5,Be5c4][%mdl 32]} 12. Nd4 Ne5 $146 ({Predecessor:} 12... c5 13. bxc5 Nxc5 14. Ba3 b6 15. Bxc5 bxc5 {1-0 (36) Khismatullin,D (2635)-Vorobiov,E (2581) St Petersburg 2011}) 13. Be2 Ne4 14. Bb2 {[%cal Bc1b2,Bb2a3,Ba3b4][%mdl 32]} Nd6 15. f3 Bd7 16. Kf2 b6 17. Rhb1 Nec4 18. b5 Na5 19. Ba3 Ndc4 20. Bb4 Bc8 21. Ra2 a6 22. Rba1 axb5 23. Bxc4 bxc4 24. Bxa5 {Nc6 is the strong threat.} bxa5 25. Rxa5 Rb8 (25... Bb7 $16 26. e4 Kf8) 26. R1a2 Rb7 27. Rc5 Be6 28. e4 Kf8 29. h4 Rdb8 30. g4 Ke7 31. Ke3 Kd6 32. Raa5 Rb1 33. e5+ Kd7 34. Ra7 R8b7 35. Rxb7 Rxb7 $16 {[%mdl 4096] Endgame KRB-KRN} 36. Ke4 Rb1 37. Nxe6 fxe6 38. Rxc4 {KR-KR} g6 (38... Re1+ $16 39. Kf4 h6) 39. Kf4 $18 h6 40. Rd4+ Ke7 41. Rb4 Rh1 42. Kg3 Rg1+ 43. Kf2 Rh1 44. Rb8 (44. Rc4 $16) 44... Rxh4 $14 45. Rg8 g5 $1 46. Rg7+ Kd8 47. Kg2 h5 $2 ({Black should try} 47... c6 $14) 48. Rxg5 $18 hxg4 49. fxg4 Kd7 50. c4 (50. Rg8 $18) 50... Rh7 {[#]} (50... Kc6 $16 {keeps fighting.}) 51. Rh5 $1 {[%cal Rh5h7]} Rg7 $2 {[#]} (51... Rf7 $16 52. Kg3 Rf1 53. Rh7+ Kc6) 52. Kg3 $1 Kc6 {If only Black now had time for ...Kc5....} 53. Rh6 Kc5 54. Rxe6 Kxc4 55. Re8 $2 (55. Rf6 $18 {And now Kf4 would win.} Kd5 56. Kf4) 55... Kd5 $11 56. Kf4 c5 $2 {[%mdl 8192]} (56... Rf7+ $11 57. Kg5 Rf1) 57. Rd8+ (57. e6 $142 Kd6 58. Kf5) 57... Kc6 58. e6 {[%cal Be5e6,Be6e7][%mdl 32]} c4 59. Kf5 Rc7 60. Kf6 c3 61. e7 {Precision: White = 68%, Black = 34%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Wan, Yunguo"]
[Black "Vorobiov, Evgeny E"]
[Result "1/2-1/2"]
[ECO "B57"]
[WhiteElo "2482"]
[BlackElo "2569"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,90,18,0,1,-32,33,21,11,2,10,0,47,41,35,0,0,0,0,16,60,62,77,75,62,75,87,30,52,-10,70,78,23,33,22,20,92,0,0,0,256,179,239,0,0,0,0,0,0,-162,-152,-164,-170,-163,-168,-181,0,0,28,35,35,35,28,0,0,0,28,28,28,0,0,0,28,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Qb6 7. Nxc6 bxc6 8. Bb3 {LiveBook: 3 Games. B57: Classical Sicilian: Sozin with 6...Qb6} (8. O-O g6 9. Qe1 Qc7 10. Bf4 Nd7 11. Qe3 Bg7 12. Bh6 O-O 13. Bxg7 Kxg7 14. b3 a5 15. Rad1 Ba6 16. Bxa6 Rxa6 {½-½ (64) Antal,G (2562)-Schlosser,P (2571) Austria 2016}) 8... e6 9. g4 $146 ({Predecessor:} 9. Be3 Qc7 10. g4 h5 11. gxh5 Rxh5 12. Qf3 Bd7 13. O-O-O Rb8 14. Rhg1 Ra5 15. Rg5 Rxg5 16. Bxg5 {0-1 (33) Thorgeirsson,J (2102)-Thorhallsson,T (2411) Reykjavik 2016}) 9... Be7 (9... d5 $15) 10. g5 $14 {White is slightly better.} Nd7 11. h4 a5 12. Be3 Qc7 13. h5 $36 {[%mdl 2048] White has the initiative.} Nc5 14. Bd4 {[#] Black must now prevent h6.} (14. h6 $5 {[%cal Rh6g7]} g6 15. Qd2 $11) 14... Nxb3 15. axb3 e5 16. Be3 Be6 17. f4 exf4 18. Bxf4 Qb6 19. Qd2 O-O 20. Be3 (20. h6 $16) 20... Qb7 21. g6 ({Better is} 21. h6 $14 g6 22. O-O (22. Qd4 f6 $15)) 21... fxg6 (21... a4 $11) 22. hxg6 hxg6 (22... h6 $16) 23. Qg2 a4 24. Qxg6 Bf6 25. Kd2 (25. Nxa4 $6 Qb4+ 26. Ke2 Bc4+ 27. bxc4 Qxc4+ 28. Kd1 Rxa4 $11) (25. Rxa4 $16 Rxa4 26. Nxa4) 25... axb3 $11 26. Raf1 bxc2 $2 {[%mdl 8192]} (26... Rf7 $11) 27. Qh7+ Kf7 28. Rxf6+ $2 (28. Bd4 $18 {Strongly threatening Rxf6+.} c1=Q+ 29. Kxc1) 28... Kxf6 29. Rf1+ Ke7 30. Qxg7+ Bf7 31. Rxf7+ $2 (31. e5 $11 Qb3 32. Qg5+ Kd7 33. exd6) 31... Rxf7 $19 32. Bg5+ Ke6 33. Qg6+ Ke5 34. Bh4 {[#]} Qd7 $2 (34... Qxb2 35. Bg3+ Rf4 36. Bxf4+ Kd4 37. Qxd6+ Kc4 38. Qxc6+ Kb4 39. Qb5+ Ka3 40. Bd6+ Qb4 41. Qxb4#) (34... Kd4 $1 $19 35. Qxd6+ Kc4 36. Qd3+ Kc5 37. Qe3+ Kc4 38. Qd3+ Kc5 39. Qe3+ Kc4 40. Qd3+) 35. Kxc2 $11 Raf8 {...Rf2+! is the strong threat.} 36. Qg5+ Ke6 $1 {And now ...Rg7 would win.} (36... Kd4 37. Ne2+ Kxe4 38. Nc3+ Kd4 39. Qd2+ Kc4 40. b3+ Kb4 41. Nd5+ Kc5 42. b4+ Kb5 43. Qd3+ Ka4 44. Qa6#) 37. Qg4+ $1 {[%mdl 1024] White has compensation.} Ke5 38. Qg5+ Ke6 $1 {Threatens to win with ...Rg7.} (38... Kd4 39. Ne2+ Kxe4 40. Nc3+ Kd4 41. Qd2+ Kc4 42. b3+ Kb4 43. Nd5+ Kc5 44. b4+ Kb5 45. Qd3+ Ka4 46. Qa6#) 39. Qg4+ $1 Ke5 40. Bg3+ Kf6 $1 ({Inferior is} 40... Kd4 41. Qd1+ Kc5 42. Na4+ Kb5 43. Qd3+ Kxa4 44. Qa6+ Kb4 45. Qb6+ Ka4 46. b3+ Ka3 47. Qa5#) 41. Bh4+ (41. e5+ $5 Ke7 42. Bh4+ Ke8 43. e6 Rf2+ 44. Kd1 Rf1+ 45. Kd2 $16) 41... Ke5 42. Bg3+ Kf6 $1 (42... Kd4 43. Qd1+ Kc5 44. Na4+ Kb5 45. Qd3+ Kxa4 46. Qa6+ Kb4 47. Qb6+ Ka4 48. b3+ Ka3 49. Qa5#) 43. Bh4+ (43. e5+ $5 Ke7 44. Bh4+ Ke8 45. e6 Rf2+ 46. Kc1 Rf1+ 47. Kd2 $16) 43... Ke5 {The position is equal.} 44. Qg5+ Ke6 $1 {aiming for ...Rg7.} (44... Kd4 45. Ne2+ Kxe4 46. Nc3+ Kd4 47. Qd2+ Kc4 48. b3+ Kb4 49. Nd5+ Kc5 50. b4+ Kb5 51. Qd3+ Ka4 52. Qa6#) 45. Qg4+ $1 Ke5 {Precision: White = 41%, Black = 60%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Shoker, Samy"]
[Black "Ghosh, Diptayan"]
[Result "1/2-1/2"]
[ECO "D79"]
[WhiteElo "2472"]
[BlackElo "2562"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,97,0,23,20,20,20,20,11,11,6,12,14,10,26,46,27,34,27,26,27,62,45,63,35,42,47,47,26,47,54,56,46,132,141,150,41,53,54,54,54,116,69,82,80,131,143,306,306,320,306,362,353,329,310,320,0,216,0,0,0,0,0,0,0,85,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c6 6. d4 d5 7. cxd5 cxd5 8. Ne5 Ne4 9. Nd2 {D79: Fianchetto Grünfeld: Symmetrical Variation (6 0-0 c6 7 cxd5 cxd5)} (9. Nc3 Nxc3 10. bxc3 Nc6 11. Nxc6 bxc6 12. Qa4 Qb6 13. Ba3 Qa6 14. Qxa6 Bxa6 15. Rfe1 Rfe8 16. Bc5 e6 17. e3 Bf8 18. Bxf8 Kxf8 19. Bf1 Bxf1 20. Kxf1 Reb8 21. Reb1 {½-½ (41) Piorun,K (2638)-Ivanchuk,V (2738) Matanzas 2017}) 9... Bf5 10. Nxe4 Bxe4 11. Bh3 Nc6 {LiveBook: 3 Games} 12. Nxc6 bxc6 13. Be3 Qb6 14. Qd2 $146 ({Predecessor:} 14. f3 Bf5 15. Bxf5 gxf5 16. Qd3 Rab8 17. Rfc1 Qb5 18. Qxb5 Rxb5 {½-½ (41) Paehtz,T (2380)-Heinig,W (2330) Plauen 1980}) 14... Rfb8 15. b3 Qb4 16. Rac1 Qxd2 17. Bxd2 Rb6 18. Bd7 (18. f3 $5 {[%cal Rf3e4]} Bf5 19. Bxf5 gxf5 20. e3 $14) 18... Bxd4 19. Bxc6 Rc8 20. Bd7 Rxc1 21. Rxc1 Rb8 22. Bg5 Kg7 23. Kf1 h6 24. Bd2 (24. Bf4 {is interesting.} e5 25. Bd2 Rb7 26. Bc8 Rb8 27. Bh3) 24... g5 25. b4 Rd8 26. Bb5 e5 (26... Be5 $14) 27. a4 $16 Rb8 28. Rc6 (28. Ba6 $16) 28... Bf5 $14 29. Rd6 Be6 30. e3 Bb2 (30... Bb6 $14) 31. Ra6 $36 {[%mdl 2048] Black is under pressure.} Rb7 $1 32. Bc6 Rc7 ({Black should try} 32... Re7) 33. b5 $16 d4 $2 (33... f6 $16) 34. Ba5 $18 Bc4+ 35. Kg1 Re7 36. Bb4 (36. Bd8 Re6 $18) 36... Re6 37. Rxa7 Bc3 {[#]} 38. Bc5 $2 (38. Bxc3 $1 $18 dxc3 39. Be4) 38... d3 $2 {[#]} (38... Rxc6 $1 $11 39. bxc6 d3) 39. Rd7 $2 (39. Bf3 $1 $18) 39... Rxc6 $11 40. bxc6 {[%mdl 4096] Endgame KRB-KB} d2 41. Kg2 {e4 is the strong threat.} Kh7 42. c7 Bd4 (42... Ba6 $1 $11 {keeps the balance.} 43. Rxf7+ Kg6) 43. Rxd4 ({Don't play} 43. Rxf7+ $6 Bxf7 44. c8=Q Bd5+ 45. f3 (45. Kh3 d1=Q $11) 45... Bxf3+ 46. Kh3 (46. Kxf3 d1=Q+ 47. Ke4 Qh1+ 48. Kd3 Qd1+ 49. Kc4 Qxa4+ 50. Kd5 Qb3+ 51. Kc6 Qxe3 $11) 46... d1=Q $11) (43. c8=Q $16 d1=Q 44. Rxf7+ (44. Rxd4 {is a self mate.} Bf1+ 45. Kg1 Bd3+ 46. Kg2 exd4 47. Qh8+ Kxh8 48. Bxd4+ Kh7 49. h4 Be4+ 50. f3 Bxf3+ 51. Kf2 Qe2+ 52. Kg1 Qg2#) 44... Bxf7 45. Qd7) 43... exd4 {The position is equal.} 44. c8=Q d1=Q 45. Qf5+ Kg8 46. Qc8+ Kh7 47. Qf5+ Kg8 48. Qc8+ Kh7 {( -> ...Bf1+)} 49. Qf5+ {Precision: White = 73%, Black = 46%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Fedorovsky, Michael"]
[Black "Pultinevicius, Paulius"]
[Result "1/2-1/2"]
[ECO "A46"]
[WhiteElo "2467"]
[BlackElo "2389"]
[Annotator "TA"]
[PlyCount "148"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,148,27,61,18,33,4,12,2,5,-4,0,-93,-87,-104,-75,-100,-56,-66,-63,-92,-75,-86,-79,-71,-91,-87,-83,-94,-93,-110,-95,-111,-98,-105,-105,-104,-75,-96,-79,-64,-74,-110,-103,-112,-104,-104,-104,-165,-75,-130,-92,-85,-41,-50,-57,-122,-20,-110,-108,-75,0,-37,0,-8,-8,-10,-10,-9,-9,-10,0,-25,-25,-31,-28,-35,-24,-49,-11,-25,-17,-33,0,-13,0,-83,-31,-31,-31,-53,-31,-31,-8,-49,-49,-76,-97,-147,-147,-147,-146,-146,-76,-76,-53,-76,-33,-76,-53,-76,-78,-88,-17,-19,0,0,0,0,0,0,0,0,0,0,0,0,0,-4,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O d6 6. c4 {A47: 1 d4 Nf6 2 Nf3 b6: Torre, London and Colle Systems} Nbd7 7. Nc3 g6 {LiveBook: 8 Games} 8. b4 $146 {White is slightly better.} ({Predecessor:} 8. Ng5 Bg7 9. f4 O-O 10. e4 e5 11. fxe5 dxe5 12. d5 Qe7 13. Kh1 Nh5 {½-½ (37) Muse,M (2443)-Dgebuadze,A (2544) Germany 2012}) 8... Bg7 9. Bb2 O-O 10. Qe2 Qe7 11. e4 c5 12. a3 (12. bxc5 $11 {keeps the balance.} bxc5 13. d5) 12... cxd4 $17 13. Nxd4 Nh5 14. Qe3 Rfc8 15. Rac1 Ne5 {Strongly threatening ...Ng4.} 16. Nce2 Nxd3 17. Qxd3 d5 $1 18. exd5 exd5 19. cxd5 Bxd5 20. Qd2 Qb7 21. f3 Bc4 22. Rfd1 b5 $1 23. Ng3 Nxg3 24. hxg3 Qb6 {White must now prevent ...Bb3.} 25. Qf2 Re8 26. Rd2 Rad8 27. Rcd1 Rd5 28. f4 Red8 29. Bc3 h5 30. Bb2 {[#]} (30. Ba1 $17 {was forced.}) 30... a5 (30... Bb3 $1 $19 {[%mdl 512] has better winning chances.} 31. Nxb3 Rxd2 32. Rxd2 Rxd2 33. Nxd2 Bxb2 34. Qxb6 axb6) 31. Bc3 (31. bxa5 $142 Qxa5 32. Kh2) 31... axb4 32. axb4 Qb7 33. Qe3 Qa8 34. Nf3 (34. f5 $15) 34... Re8 ({Black should play} 34... Rxd2 $17 35. Bxd2 Rd3) 35. Rxd5 (35. Ne5 $11) 35... Bxd5 36. Ne5 f6 (36... Bxg2 $17 {Threatens to win with ...Bh3.} 37. Ra1 Qd5) 37. Ra1 Qd8 38. Qc5 Be4 39. Re1 Bf5 40. Nf3 Rxe1+ 41. Bxe1 Bd3 (41... Qd7 {is more complex.} 42. Nd4 Bf8 43. Qb6 Qe7 44. Bf2 Bd7) 42. Qd4 (42. Qc6 {keeps more tension.} Kh7 43. Bf2 Qe7 44. Bc5 Qe2 45. Qc7) 42... Qxd4+ 43. Nxd4 $11 {[%mdl 4096] Endgame KBB-KBN} Kf7 44. Kf2 Ke7 45. Ke3 Bf1 46. Bc3 Bh6 47. Kf3 Kd6 48. f5 g5 49. Ne6 {[#]} (49. g4 $11) 49... g4+ (49... Bc4 $1 $17 50. Nc5 g4+ 51. Ke4 Bd5+ 52. Kd3 Bxg2) 50. Kf2 $15 Bd3 51. Bxf6 Bxf5 52. Nf4 h4 53. Bxh4 Ke5 54. Be7 {[#]} Kd4 $1 {[%mdl 1024] Black has strong compensation.} 55. Bc5+ Kc4 56. Ke3 Bg7 57. Ne2 Be5 (57... Bb2 $142 58. Nd4 Bxd4+ 59. Bxd4 Kxb4) 58. Nd4 $17 Bd7 (58... Bxd4+ $5 59. Bxd4 Kxb4 $17) 59. Ke4 Bxg3 {And now ...Bf2 would win.} (59... Bxd4 $5 60. Bxd4 Bc6+ 61. Ke3 Kxb4 $17) 60. Nf5 Bc6+ 61. Ke3 Be5 62. g3 Bc3 ({Better is} 62... Bc7 $17 {aiming for ...Bd7.} 63. Nd6+ Kd5) 63. Nd6+ $11 {The position is equal.} Kb3 64. Kf4 Bd7 65. Nxb5 $1 Bxb5 66. Kxg4 Kc4 67. Kf4 Kd5 68. g4 {[%cal Bg3g4,Bg4g5][%mdl 32]} Be5+ 69. Ke3 Bd7 70. g5 Ke6 71. Bd4 Bxd4+ 72. Kxd4 Kf5 73. b5 Bxb5 74. g6 Kxg6 {Precision: White = 49%, Black = 46%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Thybo, Jesper Sondergaard"]
[Black "Klabis, Rokas"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2464"]
[BlackElo "2355"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,105,94,78,132,128,188,131,122,118,121,128,110,112,130,139,129,131,158,157,163,158,158,158,158,158,158,158,160,112,152,110,130,30,129,129,129,129,140,143,146,133,125,125,149,54,34,39,61,36,208,33,38,10,4,0,0,0,0,0,0,-2,0,-10,0,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-76,0,0,0,0,0,-8,0,0,0,0]} 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. O-O O-O 6. d4 dxc4 7. Qc2 a6 8. a4 Nbd7 9. Rd1 c5 10. Nbd2 cxd4 11. Nxc4 {LiveBook: 7 Games} Bc5 {E05: Open Catalan: 5 Nf3 Be7} (11... Nd5 $142) (11... Nd5 12. Nxd4 N7b6 13. Bd2 Qc7 14. Ne3 Qxc2 15. Ndxc2 a5 16. Nxd5 Nxd5 17. Ne3 Nb6 18. Bc3 Bc5 19. Bd4 Bxd4 20. Rxd4 {1-0 (46) Soto Hernandez,H (2437)-Cu Hor,W (2306) Matanzas 2017}) 12. Nxd4 $16 Qc7 (12... Qe7 $16 {is a better defense.} 13. Nb3 Nb6) 13. b4 $146 ({Better is} 13. Bf4 $1 $18 {[%cal Rf4c7]} Qd8 14. Nb3) ({Predecessor:} 13. b3 Re8 14. a5 e5 15. Nf5 Ng4 16. e3 Nf8 17. h3 Nf6 18. Bb2 Ng6 19. Rac1 {½-½ (31) Peredy,F (2210)-Lengyel,B (2320) Budapest 1994}) 13... Bxb4 {White is clearly better.} 14. Bf4 e5 15. Nxe5 $1 Qxc2 16. Nxc2 Bc3 17. Nxd7 Nxd7 18. Rab1 Re8 19. Ne3 {Hoping for Nd5.} ({But not} 19. Bxb7 $6 Bxb7 20. Rxb7 Nc5 $14) 19... Be5 20. Bxe5 Nxe5 21. Nd5 {And now Nc7 would win.} Ra7 22. Ne7+ Kf8 23. Nxc8 Rxc8 24. Bxb7 Rc4 25. a5 Rc5 26. Rd8+ Ke7 27. Rd5 Rxd5 28. Bxd5 {[%mdl 4096] Endgame KRB-KRN} Kd6 29. e4 Kc5 30. Kf1 Nd3 31. Rb8 Nb4 32. Bb3 (32. Bb7 $16) 32... Nc6 $14 33. Rc8 Kd6 34. Ke1 Nxa5 $2 {[#]} (34... f6 $1 $14) 35. Bd5 $2 (35. e5+ $1 $18 {[%mdl 512]} Kd7 (35... Kxe5 36. Rc5+) 36. Rf8) 35... f6 36. Rd8+ Kc7 37. Rh8 h6 38. Kd2 Nc6 39. Kc3 a5 40. Rg8 Kd6 41. Kb3 a4+ 42. Ka3 Nd4 43. Rd8+ Kc7 44. Rg8 Kd6 45. Rd8+ Kc7 46. Ra8 Rxa8 47. Bxa8 $11 {KB-KN} Nf3 48. h4 (48. Kxa4 $11 {keeps the balance.} Nxh2 49. Kb4) 48... g5 (48... Kd6 $17) 49. hxg5 {The position is equal.} fxg5 50. Kxa4 h5 51. Kb4 (51. e5 $5 Nxe5 52. Be4 $11) 51... h4 52. gxh4 gxh4 53. e5 {Precision: White = 58%, Black = 67%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Yankelevich, Lev"]
[Black "Vishnu Prasanna  V"]
[Result "0-1"]
[ECO "D32"]
[WhiteElo "2447"]
[BlackElo "2538"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,74,78,64,72,87,-17,73,70,64,20,79,61,90,0,147,116,166,0,0,0,0,-81,-89,-320,-88,-87,-81,-189,-122,-114,-107,-698,-701,-822,-823,-766,-762,-935,-897,-851,-666,-887,-812,-29991,-29991,-29991,-29992,-29992,-29993,-29993,-29994,-29994,-29995]} 1. c4 e6 2. Nc3 d5 3. d4 c5 4. cxd5 cxd4 5. Qa4+ Bd7 6. Qxd4 exd5 7. Qxd5 Nc6 8. Nf3 Nf6 9. Qd1 Bc5 10. e3 Qe7 11. Be2 O-O-O 12. Bd2 Kb8 {LiveBook: 4 Games. D32: Tarrasch Defence: Sidelines and lines without g3} 13. O-O g5 14. Nd4 (14. Nxg5 Rhg8 $11) ({Better is} 14. Qc2 $16) (14. b4 Bxb4 15. Nb5 Bc5 16. Bc3 g4 17. Nfd4 Ne4 18. Bb2 Rhg8 19. Nxc6+ Bxc6 20. Nd4 Bxd4 21. Bxd4 Nc3 22. Bxc3 Qe4 {0-1 (22) Amoyal,P (2155)-Miron,L (2506) Agneaux 2012}) 14... g4 $146 (14... h5 $11) ({Predecessor:} 14... Nxd4 15. exd4 Bxd4 16. Qb3 h6 17. Rae1 Be6 18. Bf3 a6 19. Qa4 Qc5 20. b4 {1-0 (29) Matijosius,V (1876)-Palladino,M (2112) ICCF email 2008}) 15. Bb5 $16 Ne5 16. b4 Bb6 (16... Bxb4 $11 {remains equal.} 17. Rb1 Bc5) 17. a4 $1 Bc8 18. a5 (18. Qc2 $16) 18... Bc7 (18... Bxd4 $11 19. exd4 Rxd4) 19. Be2 $1 Rhg8 20. a6 $2 ({White should play} 20. b5 $18) 20... Nf3+ $1 $11 21. Bxf3 gxf3 22. Qxf3 {[#]} (22. g3 $1 $11 Ne4 23. Nxe4 (23. axb7 Bxb7 24. Nxe4 Qxe4 $16) 23... Qxe4 24. b5) 22... Ng4 $1 $17 23. Rfc1 $2 {[#]} (23. g3 $17 Nxh2 24. Qg2 (24. Kxh2 Qh4+ 25. Kg1 Bxg3 $19) 24... Nxf1 25. Rxf1) 23... Bxh2+ $2 (23... Qh4 $1 $19 {[%cal Rh4h2] is more deadly.} 24. h3 (24. Ncb5 Qxh2+ 25. Kf1 Ne5 $19) 24... Ne5) 24. Kf1 {aiming for Ncb5.} Be5 25. Nd5 (25. Kg1 $17 Bh2+ 26. Kf1) 25... Qd7 (25... Nh2+ $19 26. Ke2 Qe8 27. Rxc8+ Rxc8) 26. Rxc8+ Rxc8 27. Qe4 $2 {[%mdl 8192] [#]} (27. Ke2 $17) 27... f5 $1 $19 {[%mdl 512]} 28. Qd3 (28. Nxf5 Bxa1) 28... Qxd5 29. axb7 Qxb7 {Strongly threatening ...Nxf2!} 30. Ra5 Bxd4 31. exd4 Qe4 32. Qb5+ Ka8 {( -> ...Nh2+)} 33. f3 Qb1+ {Black mates.} 34. Be1 Ne3+ 35. Ke2 Rxg2+ 36. Kxe3 Qxe1+ 37. Kf4 Qg3+ {Precision: White = 28%, Black = 41%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Krivonosov, Oleg"]
[Black "Dastan, Muhammed Batuhan"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2397"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "157"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,157,44,50,25,51,51,85,-26,-25,-25,-26,-25,-25,-22,-27,-27,-15,-41,-40,-42,-40,-41,-44,-72,0,-9,29,-30,-30,-30,-30,-72,-87,-73,-62,-31,-29,-18,-18,-8,0,0,0,0,0,-10,-6,-14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,-9,0,0,0,0,0,0,0,0,-3,-3,-3,-3,-3,-3,-3,-3,-1,-1,0,0,0,0,0,0,0,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-8,-3,-8,-3,-8,-8,-8,-8,-8,-3,-3,-3,-3,-3,-3,0,0,0,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-10,0,0]} 1. Nf3 f5 2. g3 Nf6 3. Bg2 g6 4. b3 Bg7 5. Bb2 O-O 6. O-O d6 7. d4 Ne4 8. Nbd2 {[%cal Bb1d2,Bd2c4,Bc4e5][%mdl 32]} Nc6 9. Ne1 {A81: Dutch Defence: 2 g3} Ng5 {LiveBook: 28 Games} 10. Nc4 d5 11. Ne5 {White is slightly better.} f4 $146 ({Find the theoretical novelty and annotate with similar games:} 11... Nxe5 12. dxe5 c6 13. Nd3 Rb8 14. c4 e6 15. Qc2 b6 16. a4 c5 {½-½ (42) Lai,H (2334)-Reinderman,D (2592) Amstelveen 2015}) 12. gxf4 (12. Nxc6 $16 bxc6 13. Nd3) 12... Nh3+ $11 13. Bxh3 Bxh3 14. Ng2 Bxg2 15. Kxg2 Rxf4 16. e3 Rh4 17. Nxc6 bxc6 18. f4 Qd7 {Threatens to win with ...Qh3+.} 19. Rf3 Rf8 20. Rg3 {[#]} Qf5 ({Black should try} 20... c5 $1 $17 {[%mdl 512]}) 21. Qd3 Qe6 (21... c5 $5) 22. Rg1 {[#]} (22. Ba3 $142) 22... c5 $1 {[%cal Bc6c5,Bc5c4][%mdl 544]} 23. Kh1 (23. dxc5 Bxb2) 23... c4 24. Qf1 {[#]} c5 $1 {[%mdl 512]} 25. c3 (25. dxc5 Bxb2) 25... cxd4 26. cxd4 Rf5 27. bxc4 dxc4 {The position is equal.} 28. Bc3 Qc6+ 29. Qf3 {[#]} Rfh5 $1 {[%csl Gh5][%cal Rh4h2][%mdl 512]} 30. R1g2 Qb5 31. Qf1 Qd5 32. Qf3 Qf5 {( -> ...Qb1+)} 33. Qf1 Kf8 34. Kg1 Bf6 35. Qxc4 Rxh2 36. Rxh2 Qb1+ 37. Qf1 ({Don't blunder} 37. Kg2 $2 Qc2+ 38. Kf3 Rxh2 $19) 37... Qxf1+ 38. Kxf1 Rxh2 {[%mdl 4096] Endgame KRB-KRB} 39. Rg2 Rh3 40. Ke2 Kf7 41. Bb4 Ke6 42. Bc5 Kf5 {Hoping for ...Ke4.} 43. Kd3 a6 44. d5 Rh1 45. Bd4 Bxd4 {KRB-KR} 46. Rg5+ Kf6 47. Kxd4 {KR-KR} Rh2 48. Re5 Rxa2 49. Re6+ Kf7 50. Rb6 h5 51. Ke5 h4 {White must now prevent ...h3.} 52. f5 $1 gxf5 {And now ...h3 would win.} 53. Rh6 Ra3 {Strongly threatening ...Kg7.} (53... Rh2 $5 {[%cal Rh4h3]} 54. Rxa6 Re2 $11) 54. Kxf5 Rxe3 55. Rxh4 Ke8 56. Rh8+ Kd7 57. Ra8 Kd6 58. Rxa6+ Kxd5 59. Kf4 Re1 (59... Re4+ {is interesting.} 60. Kf5 Re5+ 61. Kf4 Re2 62. Ra5+ Ke6) 60. Ra5+ Ke6 61. Kf3 Re5 62. Ra8 Rb5 63. Ke2 Kd5 64. Ra4 e6 65. Rh4 Rb3 66. Kd2 Rg3 67. Ra4 e5 68. Rh4 Rf3 69. Ke2 Rc3 70. Rg4 Rh3 71. Ra4 Ke6 72. Rb4 Kf5 73. Ra4 $1 Rh2+ 74. Ke3 Rb2 75. Rc4 Rb1 76. Ke2 Ra1 77. Rb4 Rh1 78. Ra4 e4 {Black wants to play ...Rh2+.} 79. Ra8 {Precision: White = 73%, Black = 70%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Tomazini, Zan"]
[Black "Blomqvist, Erik"]
[Result "0-1"]
[ECO "B49"]
[WhiteElo "2395"]
[BlackElo "2525"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,122,31,0,10,0,0,0,0,0,0,0,0,0,0,0,2,15,9,0,0,0,7,0,9,6,33,0,0,0,0,0,0,0,0,0,0,-14,0,0,0,0,0,0,0,-21,-25,-27,0,0,35,-70,-56,-113,-119,-115,-41,-183,-197,-169,-154,-144,-144,-144,-144,-144,-144,-147,-81,-241,-223,-360,-354,-354,-347,-315,-294,-462,-458,-450,-435,-470,-466,-466,-446,-1445,-466,-2025,-1942,-5953,-6103,-29979,-29980,-29982,-29984,-29984,-29985]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be3 a6 7. Be2 Nf6 8. O-O Bb4 9. Nxc6 bxc6 10. Na4 O-O 11. Nb6 Rb8 12. Nxc8 Rfxc8 13. Bxa6 {B49: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 7 Be2} Rd8 (13... Re8 14. Bd3 Bd6 15. f4 e5 16. f5 Rxb2 17. g4 Rb4 18. c3 Rxe4 19. Bxe4 Nxe4 20. Qd3 Nf6 21. Rad1 Nd5 {½-½ (50) Bernadskiy,V (2511)-Kovalenko,I (2657) Albena 2015}) 14. Bd3 Bd6 15. g3 {LiveBook: 3 Games. White is slightly better.} Be5 16. a4 Bxb2 17. Ra2 Bc3 18. a5 $146 ({Predecessor:} 18. Bd2 Qa5 19. Bxc3 Qxc3 20. a5 Rb4 {1-0 (36) Gara,T (2233)-Szabolcsi,J (2441) Budapest 1999}) 18... Bxa5 19. Qa1 Bb6 {...Bxe3 is the strong threat.} 20. Bg5 e5 21. Bxf6 $1 gxf6 22. Qd1 Qd6 23. Qg4+ Kh8 24. Qh5 Qf8 25. Kg2 Qg7 26. Rb1 Qg6 (26... Bc5 $5 {[%cal Rb8b1]} 27. Rxb8 Rxb8 $11) 27. Qf3 Bc5 28. Rxb8 Rxb8 29. h4 Kg7 30. Ra5 Bd4 31. Ra3 Kf8 32. Rb3 Ra8 33. Rb7 Ke7 34. Bc4 Ra1 35. c3 Bc5 36. Qd3 Qg4 37. Rb1 Ra3 {White must now prevent ...Rxc3!} 38. Bb3 {With the idea Qc4.} f5 39. f3 (39. exf5 $14 h6 40. Bd1) 39... fxe4 $15 40. Qxe4 (40. fxe4 $15 d6 41. Bc4) 40... Qxe4 $17 41. fxe4 $15 {[%mdl 4096] Endgame KRB-KRB} h5 (41... h6 $17 {aiming for ...f5!} 42. Kf3 f5 $1 {[%mdl 512]} 43. exf5 Kf6) 42. Kf3 {[#]} (42. c4 $15) 42... f5 $1 $19 {[%mdl 512]} 43. exf5 Kf6 44. g4 d5 45. gxh5 Kxf5 46. Ke2 e4 47. Kd2 Be7 ({Better is} 47... Bf2 48. Kc2 Ke5) 48. Bc2 $2 (48. h6 $17 {was called for.}) 48... Bxh4 49. Rb3 (49. Rf1+ {is a better defense.} Ke6 50. Rg1) 49... Bg5+ 50. Kd1 Ra5 51. Rb6 Rc5 52. Ba4 (52. Rb3 $142) 52... Rxc3 {Hoping for ...Rc1+.} 53. Rxc6 Ra3 54. Bc2 Ke5 55. h6 Rh3 56. Rb6 (56. Rc5 $142) 56... Bxh6 (56... Rh1+ $142 57. Ke2 Bxh6) 57. Bb3 (57. Ba4 $142) 57... d4 {[%cal Bd5d4,Bd4d3,Bd3d2][%mdl 32]} 58. Re6+ Kf5 59. Bd5 Rh1+ {Black mates.} 60. Kc2 d3+ 61. Kc3 d2 {Precision: White = 35%, Black = 66%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Rakesh Kumar Jena"]
[Black "Kobo, Ori"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2394"]
[BlackElo "2497"]
[Annotator "TA"]
[PlyCount "151"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,151,20,24,41,29,5,34,42,85,79,86,75,88,77,95,94,111,96,133,79,81,73,72,69,89,75,150,148,151,158,159,147,147,127,129,108,139,114,133,126,172,153,153,154,149,141,151,142,245,241,313,261,412,456,403,404,437,402,403,386,404,401,695,695,725,710,737,702,870,469,453,446,787,788,697,585,750,739,562,729,702,683,621,594,841,823,877,830,756,806,1225,1582,1294,944,5812,5314,1813,426,12831,12832,12823,12823,12834,12833,12837,12838,12838,12839,12840,12840,12841,12841,12841,12842,12842,12843,12843,12843,12844,12844,12845,12845,12845,12846,12850,29978,29976,29979,29981,29982,29982,29983,29983,29984,29985,29986]} 1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 Nf6 5. Be2 O-O 6. O-O e6 7. h3 Nc6 8. Be3 a6 9. a4 b6 10. Qd2 {B08: Pirc Defence: Classical System} Bb7 11. Rad1 (11. Bg5 Ne7 12. Qe3 c5 13. Rfd1 Qc7 14. dxc5 bxc5 15. Qf4 Ne8 16. Qh4 Nc6 17. Bh6 Qe7 {½-½ (86) Harikrishna,P (2727)-Ponomariov,R (2714) Beijing 2014}) 11... Nb4 12. Bg5 {White is slightly better.} Qc8 $146 ({Predecessor:} 12... Qe8 13. Rfe1 c5 14. d5 exd5 15. exd5 Qd7 16. Bc4 {½-½ (56) Haapaniemi,J-Halmeenmaki,T Finland 2000}) 13. e5 Nd7 {[%cal Rd6e5]} 14. exd6 cxd6 15. Be7 Qc6 16. Bxf8 Rxf8 17. Rfe1 Rc8 18. Bf1 (18. Nb5 $142 axb5 19. Qxb4 (19. Bxb5 Qxc2 20. Qxb4 Nf6 $16)) 18... Nf6 $16 19. Nh2 h5 20. Ra1 a5 21. Rac1 Kh7 ({Black should play} 21... Qd7) 22. Nf3 Bh6 23. Ng5+ Kg7 24. h4 Qd7 25. Bb5 Qe7 26. Bd3 {[%cal Bb5d3,Bd3e4,Be4f3][%mdl 32]} Ba8 27. f3 Nh7 {[%cal Rh7g5]} 28. f4 Qf6 29. Be4 d5 30. Bf3 Qe7 31. Nb5 Nf6 32. c3 Na6 (32... Nc6 $16 33. g3 Bb7) 33. Qe2 $18 Nc7 34. c4 {Strongly threatening cxd5.} dxc4 (34... Nxb5 $142 35. cxb5 (35. axb5 dxc4 36. Bxa8 Rxa8 $16) 35... Rxc1 36. Rxc1 Ne4) 35. Rxc4 Bxf3 36. Qxf3 {Black must now prevent Qb7.} ({But not} 36. gxf3 Nfd5 $18) 36... Nfd5 37. Rec1 Nxb5 38. Rxc8 Nxd4 39. Qd3 e5 (39... Nf5 $142 40. R1c7 Nxc7 41. Qc3+ Qf6) 40. Qe4 Bxg5 41. fxg5 Qe6 42. Rd8 Ne7 43. Rxd4 exd4 44. Qxd4+ {[%mdl 4096] Endgame KQR-KQN} Kh7 (44... Kg8 $142 45. Rd1 Nf5) 45. Qc4 Qe3+ 46. Kh1 Kg8 47. Rd1 Nf5 48. Rd8+ Kg7 {[#]} 49. Qc3+ $1 Qxc3 50. bxc3 {KR-KN} Ng3+ 51. Kg1 Ne2+ 52. Kf2 Nxc3 53. Rd4 b5 54. axb5 {b6 would kill now.} Nxb5 55. Ra4 Nc3 56. Rxa5 Ne4+ 57. Kf3 Nd2+ (57... Nd6 $142 58. g4 Nb7) 58. Kf4 Nf1 59. Ra4 Kf8 60. g3 Nh2 61. Ke5 Kg7 62. Rf4 Kf8 63. Kf6 Ng4+ 64. Rxg4 hxg4 {K3P-K3P} 65. Ke5 Ke7 66. Kf4 Ke6 67. Kxg4 {K3P-KPP} Ke5 68. Kf3 Kf5 69. g4+ Ke5 {[#]} 70. Ke3 $1 {[%cal Re3f3]} ({Not} 70. h5 gxh5 71. gxh5 Kf5 $11) 70... f6 71. gxf6 Kxf6 {White mates.} 72. Kd4 Ke7 73. Ke5 Kf7 74. Kd6 Kf6 75. g5+ Kf5 76. Ke7 {Precision: White = 82%, Black = 39%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Agmanov, Zhandos"]
[Black "Valsecchi, Alessio"]
[Result "0-1"]
[ECO "B80"]
[WhiteElo "2393"]
[BlackElo "2493"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,78,41,40,23,41,96,82,99,87,81,81,59,50,84,91,82,77,83,41,58,29,60,23,31,36,52,-82,-78,-96,-98,-79,-66,-86,-82,-80,-56,-60,-60,-62,-58,-60,-36,-98,-104,-94,-81,-161,-167,-163,-162,-163,-162,-193,-192,-196,-174,-191,-170,-168,-179,-230,-189,-527,-540,-877,-527]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be3 Be7 7. g4 d5 {B81: Sicilian Scheveningen: Keres Attack} (7... h6 8. Qe2 Nc6 9. O-O-O Bd7 10. f4 Nxd4 11. Bxd4 Qa5 12. Rg1 e5 13. Be3 Rc8 14. g5 hxg5 15. fxg5 Nh5 {1-0 (34) Jones,G (2657)-Valsecchi,A (2494) Gjakova 2016}) 8. Bb5+ {LiveBook: 6 Games} Bd7 9. exd5 {[#] Strongly threatening d6.} Nxd5 (9... Bxb5 $14 10. Ndxb5 a6) 10. Nxd5 $16 exd5 11. Bxd7+ Qxd7 12. Qf3 $146 ({Predecessor:} 12. Nf5 O-O 13. Qd2 Nc6 14. O-O-O Rfd8 15. Kb1 {0-1 (79) Bures,J (2259)-Petrik,T (2529) Brezova pod Bradlom 2009}) 12... O-O 13. O-O-O Rd8 14. Nf5 Bf8 15. Kb1 Nc6 16. Bd4 Rac8 17. g5 {[#] Black must now prevent Nh6+!} Qe6 18. Rhe1 Nxd4 19. Nxd4 Qb6 20. Nb3 (20. h4 $14 {keeps the upper hand.}) 20... Qg6 $17 21. Rd3 Qxg5 22. Red1 {[%cal Rd3d5]} Qg6 23. Nd4 Qe4 24. Qg3 Re8 25. f3 Qg6 26. Qxg6 hxg6 27. c3 Re5 28. Kc2 (28. Nb3 $15) 28... Rh5 29. R1d2 Bd6 30. Nb5 (30. Ne2 $17 {was called for.}) 30... Bf4 $36 {[%mdl 2048] And now ...a6 would win. White is under strong pressure.} ({Resist} 30... Bxh2 31. Rxd5 Rxd5 32. Rxd5 $17) 31. Re2 a6 32. Nd4 Kf8 33. b4 Bxh2 34. Nb3 b6 {[%cal Bb7b6,Bb6a5][%mdl 32]} 35. a4 Be5 36. a5 bxa5 37. Nc5 (37. Nxa5 {is a better defense.} d4 38. f4) 37... Bd6 38. Nb7 $2 (38. Nd7+ {was the crucial defense.} Kg8 39. Nb6) 38... Bxb4 39. Kd2 Be7 {Precision: White = 55%, Black = 64%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "D`Costa, Lorin A R"]
[Black "Christiansen, Johan-Sebastian"]
[Result "1/2-1/2"]
[ECO "A26"]
[WhiteElo "2390"]
[BlackElo "2475"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,79,29,36,9,9,5,8,8,12,7,0,14,86,88,95,85,85,89,82,82,82,22,32,22,36,-41,-16,-18,42,42,42,43,91,27,88,57,62,55,64,8,8,8,8,8,8,0,0,0,0,0,15,5,8,8,7,7,6,12,5,6,6,31]} 1. c4 e5 2. g3 Nc6 3. Nc3 g6 4. Bg2 Bg7 5. d3 d6 6. e4 f5 7. Nge2 Nf6 8. O-O O-O 9. Nd5 f4 {A26: English Opening vs King's Indian with ...Nc6 and d3} (9... Be6 10. Bg5 Qd7 11. Qd2 Nh5 12. exf5 Bxf5 13. b4 Rae8 14. b5 Nd8 15. Bxd8 Rxd8 16. Nec3 c6 17. Nb4 Rc8 18. a4 {1-0 (41) Nisipeanu,L (2668)-Kozul,Z (2594) Bled 2016}) 10. gxf4 Nh5 {LiveBook: 6 Games} 11. f5 gxf5 12. Ng3 Nf4 $1 {[%cal Rf4g2]} 13. Nxf4 exf4 14. Nxf5 $146 ({Predecessor:} 14. Bxf4 fxe4 15. Nh5 Kh8 16. Bxe4 {0-1 (29) Baghdasaryan,V (2488)-Moussard,J (2539) Barcelona 2016}) 14... Bxf5 15. exf5 Rxf5 {[#]} (15... Qh4 $11 {remains equal.}) 16. Be4 $1 $16 {[%cal Re4f5]} Rg5+ 17. Kh1 Qf6 18. Qf3 Rf8 19. Qh3 h6 20. Rg1 ({White should try} 20. Bd2 $16) 20... Rxg1+ $11 21. Kxg1 Nd4 {[%cal Bc6d4,Bd4e2,Be2f4,Bf4d3][%mdl 32]} 22. Qh5 ({Better is} 22. Bd2 $14) 22... c6 23. Bd2 f3 (23... Qg5+ $11 24. Qxg5 hxg5) 24. Kh1 $14 {[#] Threatens to win with Rg1.} Ne2 25. Rb1 a6 26. Be3 (26. Qg4 $16) 26... Kh8 (26... Qf7 $11 27. Qg4 d5 28. cxd5 cxd5) 27. Re1 Qe6 28. b3 ({Much weaker is} 28. Bxf3 Nf4 $15) 28... Kg8 29. Bxf3 (29. b4 $14) 29... Nf4 $11 {The position is equal.} 30. Qg4 Qxg4 31. Bxg4 Nxd3 32. Re2 Be5 33. Kg2 Kg7 34. Rd2 Ne1+ 35. Kf1 Nf3 36. Bxf3 $1 Rxf3 37. Kg2 Rf5 38. f4 Bxf4 39. Bxf4 Rxf4 40. Rxd6 {Precision: White = 54%, Black = 42%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Sveshnikov, Vladimir"]
[Black "Grinberg, Eyal"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2377"]
[BlackElo "2455"]
[Annotator "TA"]
[PlyCount "191"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,191,23,4,8,19,0,0,-19,-15,-6,0,-14,-16,-14,-22,-18,-33,-15,0,-3,7,8,22,0,32,20,23,21,71,60,71,67,50,39,73,30,19,-18,-50,-43,-35,-12,62,27,39,28,34,22,43,27,49,6,22,41,82,-35,-27,-23,-37,-50,-40,-7,0,0,49,-56,-75,-123,-127,-135,-126,-107,-124,-206,-137,-169,-179,-147,-75,-75,-79,-73,0,0,0,-9,-5,-164,0,0,0,0,0,0,0,0,0,-327,-283,-213,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-18,0,0,0,-87,-87,-193,-196,-189,-179,-185,-194,-5700,-9843,-12849,-12849,-29979,-29980,-12851,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 Qc7 5. Nf3 g6 (5... Bg4 6. Be3 e6 7. Nbd2 Nc6 8. O-O Be7 9. a3 Bh5 10. b4 Bg6 11. Nh4 Bh5 12. Nhf3 Rc8 13. Qb1 Bg6 {0-1 (55) Potapov,P (2476)-Artemiev,V (2676) Khanty-Mansiysk 2015}) 6. O-O {B07: Pirc Defence: Miscellaneous Systems} Bg7 7. Na3 O-O 8. dxc5 Qxc5 {LiveBook: 5 Games} 9. Be3 Qa5 10. Nc4 Qc7 11. Nd4 $146 ({Predecessor:} 11. Qe2 Nc6 12. h3 Be6 13. Ng5 Bxc4 14. Bxc4 {0-1 (39) Rudolf,A (2185)-Remete,Z (2086) Budapest 2004}) 11... Nc6 12. Nb5 Qd8 13. a4 Be6 14. Nd2 Ng4 15. Bf4 a6 16. Na3 $1 Rc8 (16... Nge5 $5 {[%cal Re5d3]} 17. Bc4 Nxc4 18. Naxc4 b5 $15) 17. Bc4 $36 {[%mdl 2048] Black is under pressure.} Bd7 18. h3 Nge5 19. Be2 Na5 20. b4 Nac6 21. Be3 Nb8 22. Rc1 f5 23. f4 Nf7 24. Qb3 Kh8 25. exf5 Bxf5 26. g4 Bd7 27. b5 axb5 28. axb5 Be8 (28... e5 $1 $11) 29. c4 (29. Bf3 $5 {[%cal Rf3b7]} Qc7 30. Bd5 $14) 29... Nd7 30. Ne4 Nc5 31. Nxc5 dxc5 32. Rcd1 Nd6 33. Nb1 Qa5 34. Bd2 Qa7 35. Nc3 (35. Bc3 $16) 35... Bd4+ $15 36. Kg2 Bf7 37. Ra1 Qb8 38. Bd3 Qc7 39. Rae1 Qd7 40. Ne2 ({Better is} 40. Ne4 $14) 40... Bf6 $1 41. Rf3 {[#]} Nxc4 $1 {[%mdl 512]} 42. Bxc4 Bxc4 43. Qxc4 Qxd2 44. Kf1 (44. Rc1 $17) 44... Rfd8 45. g5 {[#]} Bg7 $1 46. h4 Qd5 (46... b6 $142 47. Qe6 c4) 47. Qxd5 $17 Rxd5 48. Nc3 Bxc3 (48... Rd7 $17 49. Na4 Rd4) 49. Rxc3 {[%mdl 4096] Endgame KRR-KRR} c4 50. Rxe7 Rxb5 {Threatening ...Rb2.} 51. h5 $2 (51. Ke2 $11 {and White has nothing to worry.}) 51... Rb1+ $2 (51... gxh5 $19 {And now ...Rf5 would win.} 52. Rh3 Rb1+ 53. Re1 Rb2 54. Rxh5 Kg8) 52. Kg2 $11 Rb2+ 53. Kg3 gxh5 {Threatens to win with ...Rb1.} 54. Rc1 Rb3+ (54... Kg8 {seems wilder.} 55. Rd1 Ra8 56. g6 h4+ 57. Kh3 Rb6) 55. Kh4 Rf3 (55... c3 {looks sharper.} 56. Rd1 Rb4 57. Rdd7 Rxf4+ 58. Kxh5 Rf2) 56. Rxb7 $2 {[%mdl 8192]} (56. Kxh5 $11 Rxf4 57. Rb1) 56... Rxf4+ $19 57. Kxh5 Kg8 $2 (57... c3 $19 58. Rc2 Rcc4 59. Rb8+ Kg7 60. Rb7+ Rf7) 58. Rc3 $1 $11 Rf7 59. Rb6 Kg7 60. Rd6 Rc5 61. Rd4 Rfc7 {aiming for ...h6.} (61... Re7 {with more complications.} 62. Rcxc4 Rxc4 63. Rxc4) 62. Kg4 R7c6 63. Rh3 Rc7 (63... c3 $5 {[%cal Rc5c4]} 64. Rd7+ Kg8 65. Rhxh7 Rg6 $11) 64. Rc3 R5c6 65. Kh5 Kf7 66. Re4 Rc5 67. Kg4 Kg7 68. Rd4 Kf8 69. Re4 R5c6 70. Kh5 Kg7 71. Kg4 Kg6 72. Rd4 Rc5 73. Rd6+ Kf7 74. Kf4 Ke8 75. Rd4 R5c6 76. Kg4 Ke7 77. Kf4 Rc5 78. Re3+ Kf7 {Hoping for ...c3.} 79. Rc3 Kg6 80. Rd6+ Kg7 81. Kg4 R7c6 82. Rd4 Kg6 83. Kh4 {[#]} (83. Kf4 $1 $11) 83... Kf5 $1 $17 84. Kh5 (84. Kg3 $17) 84... Ke5 $19 85. Rd1 Rd5 86. Re1+ Kd4 87. Rec1 $2 (87. Rh3) 87... h6 88. Rxc4+ Rxc4 89. Rxc4+ Kxc4 90. Kxh6 {KR-KP} Rd2 $2 ({Black should play} 90... Rd8 $19 91. Kg6 Kd5) 91. g6 $11 {The position is equal.} Rh2+ 92. Kg5 Kd5 93. g7 Ke5 {( -> ...Rg2+)} 94. Kg6 Rg2+ 95. Kf7 {[#]} Rxg7+ $1 {[%mdl 512]} 96. Kxg7 {Precision: White = 54%, Black = 57%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Gokerkan, Cem Kaan"]
[Black "Bailet, Pierre"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "2357"]
[BlackElo "2536"]
[Annotator "TA"]
[PlyCount "29"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,29,43,35,45,0,43,13,11,0,0,0,0,-2,0,0,2,-8]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Re1 d6 7. a4 Be6 8. Nbd2 Re8 {C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack} 9. a5 b6 $146 ({Predecessor:} 9... Bf8 10. c3 Rb8 11. b4 a6 12. Qb3 h6 13. h3 Qd7 14. Bb2 Ne7 15. Bxe6 Qxe6 16. Qxe6 fxe6 {0-1 (49) Tkachiev,V (2535)-Nikolic,P (2655) Paris 1994}) 10. Bb5 Bd7 {The position is equal.} 11. axb6 axb6 12. Rxa8 Qxa8 13. Nc4 Nb8 14. Bxd7 Nbxd7 15. h3 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.12"]
[Round "8"]
[White "Pershin, Denis"]
[Black "Sarana, Alexey"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2353"]
[BlackElo "2540"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,120,-8,0,0,0,0,15,0,0,0,1,-28,-32,-34,-33,-35,-38,-54,-55,-97,-101,-160,-160,-118,-141,-223,-219,-232,-222,-251,-216,-193,-202,-252,-262,-262,-267,-265,-284,-283,-273,-287,-153,-153,-153,-153,-148,-146,-146,-168,-158,-167,-167,-173,-170,-171,-167,-167,-156,-167,-153,-183,-153,-153,-150,-235,-235,-234,-229,-225,-223,-202,-201,-176,-153,-194,-153,-153,-153,-153,0,-153,-153,-153,-153,-153,-153,-153,-153,-154,-153,-154,-154,-596,-595,-579,-578,-577,-563,-505,-558,-557,-507,-514,-470,-438,-423,-601,-601,-560,-560,-485,-454]} 1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Na6 5. e3 c6 (5... Be7 {feels hotter.} 6. Nf3 O-O 7. c4 c5 8. Be2 dxc4 9. Bxc4 Nd5) 6. Nc3 {D00: 1 d4 d5: Unusual lines} Bb4 7. Bxa6 (7. Nge2 O-O 8. a3 Bd6 9. Ng3 Nc7 10. Bd3 Re8 11. Bxd6 Qxd6 {0-1 (42) Rapport,R (2717)-Wei,Y (2707) Yancheng 2016}) 7... bxa6 8. Nge2 {The position is equal.} O-O 9. a3 Be7 10. Qd3 $146 ({Predecessor:} 10. O-O c5 11. Ng3 Bb7 {0-1 (56) Fries Nielsen,J (2411)-Semcesen,D (2449) Lund 2011}) 10... c5 11. h3 Bb7 12. O-O Rc8 13. Kh1 a5 14. Ng1 Qb6 {Threatens to win with ...Ba6.} 15. Qd2 (15. dxc5 $142 Qxc5 16. Nge2) 15... cxd4 $17 16. exd4 Qxb2 17. Rab1 (17. Rfb1 $17 {was called for.} Qxc3 18. Qxc3 Rxc3 19. Rxb7) 17... Qxc3 $19 18. Rxb7 {Strongly threatening Qxc3.} Bxa3 19. Rxa7 Bb4 ({Don't do} 19... Qxc2 20. Qxc2 Rxc2 21. Rxa5 $17) 20. Qxc3 Rxc3 21. Nf3 Rxc2 22. Bc7 Ne4 23. Kg1 Ra2 24. Ne5 a4 25. Nc6 Bd6 (25... Bd2 $19 {...Rc2 is the strong threat.} 26. Bb6 Bg5) 26. f3 $17 Rc2 27. fxe4 Rxc6 28. Bxd6 Rxd6 29. exd5 Rxd5 30. Rxa4 {[%mdl 4096] Endgame KRR-KRR} Rfd8 31. Rc1 h5 32. Rcc4 Kh7 33. Kf2 Kg6 34. h4 R8d7 35. Kf3 Kf5 36. g3 Rb7 {And now ...Rb3+ would win.} 37. Rc3 (37. Rab4 $17 Rbd7 38. Ra4) 37... Rb1 $19 38. Ra7 {[#]} Kg6 $1 ({Don't play} 38... Rxd4 39. Rxf7+ Kg6 40. Ra7 $17) 39. Ke4 Re1+ 40. Re3 Rd1 41. Ra4 Rf1 42. Rf3 Re1+ 43. Re3 Rb1 44. Rc4 Rd1 45. Ra4 $1 Rb5 46. Rc4 Rb2 47. Ra4 Rf2 48. Ra6 Rf5 49. Rb6 Kf6 50. Rb8 Ra1 51. Rf3 $2 (51. Rc8 $17 {is more resistant.}) 51... Rxf3 {Black is clearly winning.} 52. Kxf3 {KR-KR} Ra3+ 53. Kf2 Rd3 54. Rb4 Kg6 55. Ra4 {[#]} f6 $1 56. Rb4 Kf5 57. Rb7 g6 58. Rb4 (58. Rb5+ $142 Ke4 59. Rb6) 58... Ke4 59. Rb6 Kd5 60. Rb7 Rxd4 {Precision: White = 50%, Black = 86%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Nabaty, Tamir"]
[Black "Boruchovsky, Avital"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "2654"]
[BlackElo "2556"]
[Annotator "TA"]
[PlyCount "140"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,140,15,29,21,17,26,27,6,52,55,55,41,28,13,18,0,22,14,87,45,41,0,0,0,7,11,20,22,58,6,5,22,129,118,132,125,349,296,335,319,355,217,216,205,197,205,193,161,161,157,168,170,170,91,99,77,69,73,69,69,81,64,89,28,12,0,5,5,140,16,16,0,12840,12840,12844,12844,12851,12851,12851,12851,12851,12851,12851,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 c6 5. Nbd2 Be7 6. b3 {D30: Queen's Gambit Declined: Systems without Nc3} (6. Bd3 dxc4 7. Nxc4 c5 8. dxc5 Bxc5 9. a3 a6 10. b4 Ba7 11. Bb2 Nc6 12. Nfe5 Nxe5 13. Nxe5 O-O {1-0 (45) Brunello,S (2582)-Duda,J (2587) Ruzomberok 2014}) 6... O-O 7. Bb2 a5 8. a3 {White has an edge.} a4 $146 ({Predecessor:} 8... Nbd7 9. Qc2 Rb8 10. Bd3 Re8 11. O-O Nf8 12. Ne5 N6d7 13. f4 f6 {1-0 (48) Pakhomov,E (2353)-Slugin,A (2100) Tomsk 2009}) 9. b4 $1 b6 10. Rc1 c5 11. bxc5 bxc5 12. cxd5 Nxd5 13. dxc5 {White wants to play c6.} Ra5 (13... Nd7 $1 $11) 14. Bd4 Nc6 15. Nc4 Bxc5 16. Bb2 Ra7 17. Bd3 $36 {[%mdl 2048] White has good play.} Ba6 18. O-O f5 19. Qxa4 (19. Re1 $14) 19... Ncb4 20. axb4 Bxc4 (20... Nxb4 $11 {keeps the balance.} 21. Bxf5 Bxc4) 21. Qc6 $16 Bxd3 22. Qxe6+ ({And not} 22. bxc5 Qe7 $15) ({Don't take} 22. Rxc5 $6 Qe7 $11) 22... Kh8 $2 (22... Raf7 $16) 23. Rxc5 $18 Be4 24. Rfc1 {Threatens to win with Rc8.} Re7 25. Qc8 Nxb4 26. Qxd8 Rxd8 27. Rc8 Ree8 28. Rxd8 Rxd8 29. Ng5 Kg8 {[#]} 30. Bxg7 $1 {[%mdl 512]} Nd3 (30... Kxg7 31. Ne6+) 31. Rc7 (31. Rd1 $18) 31... Rb8 $16 {( -> ...Rb1+)} 32. h3 Rb1+ 33. Kh2 Rb7 34. Rc3 Kxg7 35. f3 Kf6 36. h4 (36. fxe4 $16 Kxg5 37. Rxd3) 36... h6 $11 37. fxe4 hxg5 38. hxg5+ Ke5 {[#]} (38... Kxg5 $11 39. Rxd3 fxe4) 39. Rxd3 ({White must play} 39. exf5 $1 $16 Ke4 40. Kg3) 39... Kxe4 $16 {[%mdl 4096] Endgame KR-KR} 40. Rd6 {And now Kg3 would win.} Rg7 $2 {[%mdl 8192]} (40... f4 $11) 41. g6 $18 f4 {[#]} 42. exf4 $1 Kxf4 43. Kh3 Kg5 44. Rd4 Kf6 45. Rf4+ Ke6 46. Rg4 $2 (46. g4 $18 {aiming for Kh4.} Rxg6 47. Kh4) 46... Ke7 $11 {The position is equal.} 47. Kh4 Kf8 48. Kg5 Ra7 49. Kh6 Ra1 50. g3 {Kh7 is the strong threat.} (50. Rh4 $5 {[%cal Rh6h7]} Kg8 51. Rb4 Rh1+ 52. Kg5 $14) 50... Kg8 51. Rg5 (51. Re4 $5 {[%cal Re4e8]} Rh1+ 52. Rh4 $14) 51... Rh1+ 52. Rh5 Rg1 53. Ra5 {[%cal Ra5a8]} Rh1+ 54. Kg5 Rb1 55. g4 Rc1 56. Re5 Rf1 57. Rd5 Rf2 58. Rd7 Rf1 59. Re7 Rf2 60. Rf7 Ra2 61. Rf5 Ra1 62. Re5 Rf1 63. Re8+ Kg7 64. Re7+ Kg8 65. g7 {Strongly threatening Kg6.} Ra1 66. Kf6 {Re8+ would kill now.} Ra6+ 67. Re6 Rxe6+ 68. Kxe6 {White threatens Kf6 and mate.} Kxg7 69. Ke5 Kg6 70. Kf4 (70. g5 $5) 70... Kf6 {Precision: White = 59%, Black = 67%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Fridman, Daniel"]
[Black "Hansen, Mads"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2640"]
[BlackElo "2410"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,91,-3,-3,-6,-3,-9,0,-3,-6,-16,-8,-32,-26,-34,-30,-30,-22,-32,-29,-40,-10,-47,-9,-14,31,31,4,25,28,31,29,27,48,21,52,47,105,104,123,129,139,122,129,128,138,98,136,100,113,107,122,100,110,118,107,101,187,175,207,205,281,270,390,390,5651,5189,5297,5015,5302,5181,5081,2646,4134,1576,6444,6094]} 1. Nf3 c5 2. b3 Nf6 3. Bb2 g6 4. g3 Bg7 5. Bg2 d5 6. O-O O-O 7. e3 {A05: Réti Opening: 1 Nf3 Nf6} (7. c4 d4 8. e3 Nc6 9. exd4 cxd4 10. d3 Nd7 11. Re1 a5 12. Nbd2 Nc5 13. Ne4 Nxe4 14. Rxe4 Bf5 15. Re1 Qd7 16. Ba3 Rfe8 {1-0 (70) Caruana,F (2804)-Anand,V (2770) Leuven 2016}) 7... Nc6 8. Ne5 Nxe5 9. Bxe5 Bg4 {LiveBook: 4 Games} 10. f3 Be6 11. Nc3 {[%cal Bb1c3,Bc3e2,Be2f4][%mdl 32]} Rc8 $146 ({Predecessor:} 11... Qd7 12. d4 b6 13. Ne2 Rac8 14. Rc1 c4 {1-0 (42) Wockenfuss,K (2320)-Baeuml,U (2110) Bad Wiessee 1998}) 12. Ne2 Qd7 13. Nf4 Rfd8 14. Qc1 Nh5 15. Nxe6 Qxe6 16. Bxg7 Nxg7 17. f4 b5 18. Qb2 c4 19. Rae1 a5 (19... h5 {feels hotter.} 20. Qd4 h4 21. gxh4 Nf5 22. Qe5 Qxe5 23. fxe5 Nxh4 24. c3 Nxg2 25. Kxg2 Kg7) 20. bxc4 dxc4 21. Qxb5 Rxd2 22. Rf2 Rxf2 23. Kxf2 Qf5 24. Qxf5 Nxf5 $11 {[%mdl 4096] Endgame KRB-KRN} 25. Bf1 Rc5 26. a4 Nd6 ({Better is} 26... f6 $14) 27. e4 $16 {[%cal Be3e4,Be4e5][%mdl 32]} e5 28. Ke3 Kf8 29. fxe5 $1 Rxe5 30. Kd4 Re7 31. g4 Rd7 32. e5 Nb7+ 33. Kxc4 Rc7+ {[#]} 34. Kb5 $1 {[%cal Rb5b6] Kb6 is the strong threat.} Rxc2 35. Kb6 Nc5 {[#]} 36. Bb5 $1 g5 (36... Ke7 $16 {was called for.}) 37. Re3 $18 Ke7 38. h3 ({Much less strong is} 38. Kxa5 Rxh2 39. Rc3 Ne6 $16) 38... Nd7+ 39. Kxa5 Rc5 (39... Ra2 {keeps fighting.} 40. Bc4 Rc2) 40. Kb4 Rxe5 $2 (40... Rc1 41. a5 Rb1+ 42. Rb3 Ra1) 41. Rxe5+ {White is clearly winning.} Nxe5 {KB-KN} 42. Kc5 ({Not} 42. a5 Kd6 $16) 42... Kd8 43. Kb6 Ng6 44. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} Ne7 45. Kb7 f5 46. a6 {Precision: White = 83%, Black = 40%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Bogner, Sebastian"]
[Black "Wan, Yunguo"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2600"]
[BlackElo "2482"]
[Annotator "TA"]
[PlyCount "141"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 35,141,61,74,-45,7,-109,-91,-100,-95,-76,-12,0,0,0,0,0,21,0,16,25,47,0,10,-4,-2,-22,-30,-22,-22,-25,-22,-27,-17,-25,-25,-31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,12834,12835,12837,12838,12838,12839,12839,12839,12840,12840,12841,12841,12844,12844,12845,12846,12846,12847,12847,12847,12848,12847,12848,12847,12848,12848,12850,12849]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 Bg7 11. Bd3 Ne7 12. Nxe7 Qxe7 13. O-O O-O 14. c4 f5 15. Qh5 Rb8 16. exf5 e4 17. Rae1 Bb7 18. Qg4 Rfe8 {[#] LiveBook: 47 Games. B33: Sicilian: Pelikan and Sveshnikov Variations} 19. b3 $146 (19. cxb5 $16 axb5 20. Bxb5) ({Predecessor:} 19. cxb5 d5 20. bxa6 Bc6 21. b3 Kh8 22. Nc2 Bc3 23. Qh3 Qf6 24. Be2 d4 25. Bc4 Rg8 26. g3 Rbe8 27. Rd1 e3 28. fxe3 dxe3 29. Be2 Re4 30. Qg2 Re7 31. Qh3 Re4 32. Qg2 Re7 33. Qh3 {½-½ (33) Shirov,A (2723)-Carlsen,M (2810) Wijk aan Zee 2010}) 19... Kh8 (19... bxc4 $15 20. Nxc4 d5) 20. Nb1 {[#]} (20. cxb5 $11 axb5 21. Nxb5 (21. Bxb5 Rg8 $11)) 20... bxc4 $1 $17 {Black is better.} 21. bxc4 {[#]} Be5 $1 22. f6 Qxf6 ({Black should try} 22... Bxf6 $17 {Hoping for ...Rg8.} 23. Nd2 Rg8) 23. Bxe4 $11 Rg8 24. Qe2 Bxe4 25. Qxe4 Rb2 26. Re2 Rxe2 27. Qxe2 Rb8 28. Qd3 Rb2 29. a3 Qg6 30. Qxg6 hxg6 {[%mdl 4096] Endgame KRB-KRN} 31. Rd1 Bd4 32. Nd2 f5 33. g4 Bc5 34. gxf5 gxf5 35. a4 Ra2 36. a5 Kg7 37. Nb3 Bxf2+ 38. Kf1 Be3 39. Rxd6 f4 40. c5 Kf7 41. h4 ({Wrong is} 41. Rxa6 $2 Rb2 $19) 41... Rc2 42. c6 ({Much worse is} 42. Rxa6 Rb2 $17) 42... Ke7 43. Rd7+ Ke6 44. Nd4+ Bxd4 $1 45. Rxd4 {KR-KR} Ke5 46. Rb4 Kf5 47. h5 {White wants to play h6.} (47. Rb6 $5 {[%cal Rb6a6]}) 47... Kg4 48. h6 Rxc6 49. Rb6 Rc1+ 50. Ke2 f3+ 51. Kf2 Rc2+ 52. Ke3 Rc3+ 53. Kf2 {Strongly threatening Rb4+.} Rc2+ 54. Ke3 Rc3+ 55. Kd2 (55. Ke4 $5 {[%cal Rh6h7]} f2 56. Rg6+ Kh3 57. h7 (57. Rf6 Kg2 $11) 57... Rc4+ 58. Ke3 $11) 55... Rc5 56. Rg6+ Kf4 $1 57. Rxa6 {h7 is the strong threat.} Rd5+ $2 {[%mdl 8192]} (57... f2 $11 58. Ke2 Rc2+ 59. Kf1 Kf3 60. Rf6+ Kg3) 58. Ke1 $18 {White is clearly winning.} Rh5 59. Rf6+ Ke5 60. Rb6 {White threatens Rb5+ and mate.} Kf4 61. a6 {[%cal Ba5a6,Ba6a7][%mdl 32]} Rh1+ 62. Kf2 Rh2+ 63. Kg1 Rc2 64. a7 Rc1+ 65. Kh2 Rc2+ 66. Kh3 Ra2 67. h7 Ra1 68. Rf6+ Ke3 69. Kg4 Rg1+ 70. Kh5 Ra1 71. Kg6 {Precision: White = 58%, Black = 66%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Kryakvin, Dmitry"]
[Black "Vishnu Prasanna  V"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2583"]
[BlackElo "2538"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,72,-12,-11,-6,-8,-10,-19,14,6,9,-18,-4,-7,0,0,0,0,29,31,11,20,11,0,19,-3,2,0,0,0,0,0,21,14,30,20,18,-16,17,0,0,0,0,-97,-104,-81,-91,-97,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. e3 d5 5. g3 (5. c4 dxc4 6. Bxc4 Bd6 7. Nc3 Nd7 8. Bb3 Nb6 9. Nf3 Qe7 10. O-O O-O 11. h3 Be6 12. e4 Rad8 13. Qc1 Rfe8 14. Re1 {0-1 (50) Rapport,R (2717)-Yu,Y (2729) Danzhou 2016}) 5... Bd6 6. Bg2 {D00: 1 d4 d5: Unusual lines} c6 7. Nd2 {LiveBook: 4 Games} Be6 8. Ne2 Nd7 9. O-O $146 ({Predecessor:} 9. b3 f5 10. c4 Nf6 11. Qc2 Kf8 12. O-O h5 {1-0 (62) Berend,F (2344)-Rosenbeiger,A (2160) Andorra 2009}) 9... f5 10. Nf4 O-O 11. Nd3 Qe7 12. Rc1 Rac8 13. c4 dxc4 14. Nxc4 Bb8 15. Na5 Rc7 16. a3 Nf6 17. b4 Ne4 18. Nf4 (18. f3 $5 {[%cal Rf3e4]} Nd6 19. Nf4 $11) 18... Bc8 19. Rc2 h5 20. h4 Rd7 21. Qf3 Bc7 22. Nb3 Qd8 23. Rd1 (23. Nc5 $5 {[%cal Rc5d7]}) 23... Re8 24. Bf1 Rde7 25. Bc4 Bxf4 26. Qxf4 Nd6 27. Nc5 (27. Nd2 $11 {remains equal.}) 27... Nxc4 $17 28. Rxc4 {[#]} b6 $1 {[%cal Rb6c5]} 29. Nd3 Re4 ({Black should play} 29... Bb7 $17 30. Rcc1 {[#]} c5 $1 {[%mdl 512]}) 30. Qh6 $36 {[%mdl 2048] The position is equal. White is more active.} Qd5 31. Rdc1 {Black must now prevent Nf4.} Ba6 32. Rxc6 {Threatens to win with Nf4.} Bxd3 {[#]} 33. Rxg6+ $1 {[%mdl 512]} fxg6 34. Qxg6+ Kf8 35. Rc7 $1 {[%csl Gc7][%cal Rg6g7]} R4e7 36. Qh6+ $1 Kg8 {Precision: White = 49%, Black = 46%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Stocek, Jiri"]
[Black "Zeng, Chongsheng"]
[Result "0-1"]
[ECO "E71"]
[WhiteElo "2583"]
[BlackElo "2537"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,52,51,-14,5,9,14,5,34,0,0,0,0,18,4,12,20,5,19,10,17,-75,-73,-74,-54,-64,-55,-43,-55,-47,0,-36,-23,-64,-10,-37,-45,-442,-443,-421,-421]} 1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. h3 O-O 6. Be3 e5 7. d5 a5 8. c5 {LiveBook: 12 Games. E71: King's Indian: 4 e4 d6 5 h3} (8. Qd2 $14) 8... dxc5 $146 ({Predecessor:} 8... Na6 9. cxd6 Qxd6 10. Nf3 c6 11. dxc6 Qe7 12. Bc4 bxc6 13. O-O Nc5 14. Qc2 Nfd7 15. Na4 Ne6 {1-0 (29) Karpov,A (2674)-Miroshnichenko,E (2628) Sochi 2005}) 9. Bxc5 Re8 10. Nf3 {The position is equal.} Bh6 11. Bb5 Bd7 {Strongly threatening ...Bxb5.} 12. a4 Na6 13. Bxa6 Rxa6 14. O-O Nh5 15. Re1 Nf4 16. Ne2 g5 17. Ng3 (17. Nxf4 $11 gxf4 18. Qb3) 17... g4 $17 18. hxg4 Bxg4 {...Rf6 is the strong threat.} 19. Qb3 Rg6 $1 {[%cal Ba6g6,Bg6g4,Bg4g6][%mdl 32]} 20. Nh2 Qh4 21. Nxg4 Rxg4 22. Rad1 ({Don't blunder} 22. Qxb7 $2 Rxg3 23. fxg3 Qxg3 $19) 22... b6 23. Ba3 Bf8 $40 {[%mdl 128] White needs to defend precisely.} (23... Kh8 $15 24. Rc1 Reg8 25. Rxc7 Rxg3 26. fxg3 Rxg3 27. Rc8+ Kg7 28. Bf8+ Kg6 29. Qxb6+ f6) 24. Bxf8 $11 Rxf8 25. Rc1 $2 {[%mdl 8192] [#]} (25. Qf3 $1 $15 Rg6 26. Nf5 Nxg2 27. Nxh4 Nxh4+ 28. Qg3 Rxg3+ 29. fxg3 Nf3+ 30. Kg2 Nxe1+ 31. Rxe1) 25... Rg6 $1 $19 {[%cal Rg6h6] Hoping for ...Rh6.} 26. Rc6 {[#]} ({Avoid the trap} 26. Rxc7 $2 Rh6) 26... f6 $1 {Precision: White = 37%, Black = 63%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Kulaots, Kaido"]
[Black "Mu, Ke"]
[Result "1/2-1/2"]
[ECO "C06"]
[WhiteElo "2577"]
[BlackElo "2411"]
[Annotator "TA"]
[PlyCount "34"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,34,25,17,0,0,0,-5,-16,-8]} 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Qxf6 10. Nf3 h6 11. O-O Bd6 12. Nc3 O-O 13. a3 {C06: French Tarrasch: 3...Nf6 4 e5 Nfd7 5 Bd3 main lines} Rd8 14. Be3 Nf8 {LiveBook: 7 Games} 15. Bc2 {The position is equal.} (15. Rc1 Bd7 16. h3 Kh8 17. Bb1 Be8 18. Nh2 Bxh2+ 19. Kxh2 e5 20. Ne2 Bh5 21. Qd2 Bxe2 22. Qxe2 exd4 {0-1 (60) Fedorov,A (2565)-Iljiushenok,I (2499) Kazan 2016}) 15... Bd7 16. g3 $146 ({Find the theoretical novelty and annotate with similar games:} 16. Qd2 Be8 17. Ne1 Bg6 18. f4 Rac8 19. Rc1 Bc7 20. b4 Bxc2 21. Rxc2 {½-½ (46) Seyfried,C (2185)-Jussupow,N (2156) Saarbruecken 2013}) 16... Be8 17. Nh4 Ng6 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Alekseenko, Kirill"]
[Black "Shoker, Samy"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2575"]
[BlackElo "2472"]
[Annotator "TA"]
[PlyCount "229"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,229,54,42,27,32,41,39,36,71,75,89,51,70,46,46,23,63,62,49,9,53,29,51,29,74,72,137,110,141,131,224,232,191,116,121,115,129,131,541,537,516,229,227,209,211,217,377,292,297,297,297,293,284,279,304,241,224,181,180,160,217,207,205,197,195,195,195,187,180,160,199,197,172,120,219,222,226,176,224,223,194,206,176,194,181,173,213,172,198,200,343,343,406,400,382,281,213,127,311,301,352,352,410,400,398,252,411,411,383,352,352,343,234,0,339,322,866,862,859,866,859,844,829,829,915,797,820,484,772,352,352,352,352,352,352,352,352,352,352,8,352,352,352,350,255,0,149,0,0,-8,0,0,0,0,0,0,0,0,0,0,8,8,484,484,484,484,484,484,484,484,484,484,484,484,484,484,409,0,484,484,484,484,484,484,484,484,12850,12849,6556,484,484,484,484,484,29960,29956,29952,29947,29958,29960,29959,29960,29966,29960,29963,29959,29975,5412,29981,29982,29982,29983,29983,29984,29984,29985,29985,29986,29988,29989]} 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 a6 5. Nf3 b5 6. Bd3 Nd7 7. a4 {B06: Modern Defence} (7. e5 c5 8. Be4 Rb8 9. Be3 cxd4 10. Bxd4 dxe5 11. fxe5 e6 12. O-O Ne7 13. Qe1 O-O 14. a4 b4 15. Ne2 {0-1 (49) Anand,V (2793)-Caruana,F (2829) London 2014}) 7... b4 8. Ne2 c5 9. c3 {White is slightly better.} bxc3 10. bxc3 Rb8 $146 ({Predecessor:} 10... Bb7 11. O-O Qc7 12. Rb1 Rb8 13. d5 c4 14. Bc2 Ngf6 {1-0 (34) Corrales Jimenez,F (2586)-Almeida Quintana,O (2555) Havana 2011}) 11. a5 Ngf6 12. O-O O-O 13. Kh1 Qc7 14. e5 Nd5 {[%cal Bf6d5,Bd5e7,Be7f5][%mdl 32]} 15. Bd2 e6 (15... c4 $5 {[%cal Rc4d3]} 16. Bb1 Rb2 $11) 16. Ng3 Ne7 17. Ne4 $36 {[%mdl 2048] White has good play.} Nf5 18. Qe2 Rb2 (18... Bb7 $142) 19. Bxa6 $16 cxd4 20. cxd4 d5 (20... Qa7 $16 21. Bd3 Bb7) 21. Rfc1 $18 Qb8 22. Neg5 ({White should try} 22. Nc3 $1 $18) 22... h6 $16 {Threatens to win with ...Bxa6.} 23. Rxc8 Rxc8 24. Bxc8 hxg5 $2 {[%mdl 8192]} (24... Qxc8 $16 {is a better chance.} 25. Nh3 Qc2) 25. Bxd7 $18 g4 26. Ne1 (26. Ng5 $142) 26... Nxd4 27. Qe3 ({Not} 27. Qxg4 Rxd2 28. Rc1 Bf8 $11) 27... Nb3 28. Rd1 Qc7 $2 (28... Nxd2 {was necessary.} 29. Rxd2 Rb1) 29. Bc3 Ra2 30. Bb5 Nxa5 31. Ra1 Rxa1 32. Bxa1 Qb7 33. Qd3 Bh6 34. Ba6 Qa8 35. Qb5 Nc4 (35... Nb3 $16) 36. Qb7 Qxb7 37. Bxb7 Bxf4 38. Nd3 Be3 39. Bc3 Kg7 40. Bc6 g5 41. g3 Kg6 42. Kg2 (42. Nb2 $18 Bd2 43. Bxd2 Nxd2 44. Be8) 42... Kf5 (42... Ba7 $16 43. Kf1 Ne3+ 44. Ke1 Bd4) 43. Be8 Ke4 44. Nf2+ Bxf2 45. Kxf2 d4 46. Bb4 Nxe5 {White must now prevent ...Nd3+.} 47. Be7 Kf5 48. Bb5 f6 49. Be2 Nc6 50. Bc5 $1 e5 (50... Ke4 {was called for.} 51. Bxg4 Ne5) 51. Bb5 Nd8 52. Bd7+ Kg6 53. Bb6 Nf7 54. Bxg4 (54. Ke2 $1 $18) 54... Nd6 $2 (54... f5 $16 55. Bd1 Nd6) 55. Be6 f5 56. Bd5 Nb5 57. Bc6 Nc3 58. Ba5 Nd1+ $2 (58... Kf7 59. Bd8 Kg6) 59. Ke2 Ne3 60. Be8+ Kh6 61. Bd7 Kg6 62. Be8+ (62. h3 $142) 62... Kh6 $1 63. Bc7 Ng4 $2 (63... e4 64. Bb6 Ng4 65. Bxd4 Nxh2) 64. h3 Nf6 65. Bc6 e4 66. Be5 d3+ 67. Ke3 Kg6 68. Bc3 Kf7 69. Bb7 Kg6 {[#]} (69... Nh5 $142 70. g4 Ng3 71. Bd5+ Kg6) 70. Be5 (70. g4 $142 $1 f4+ (70... fxg4 71. Bxf6) 71. Kd4) 70... Nd7 71. Bd4 Nf6 72. Bc8 f4+ 73. gxf4 gxf4+ 74. Kd2 Kg5 75. Bc5 $2 (75. Bb7 $18) 75... Nh5 $2 {[%mdl 8192]} (75... f3 $1 $11) 76. Be7+ Kg6 {[#]} 77. Bd6 $1 Kg5 78. Be7+ (78. Bd7 $18) 78... Kg6 $16 {[#]} 79. Bg4 (79. Bh4 $1 $16) 79... Ng3 $11 80. Bd6 Kg5 81. Bc7 Nf5 82. Bd8+ Kg6 83. h4 {Strongly threatening h5+.} Ne3 84. Be6 Nf1+ 85. Ke1 Ng3 86. Bg5 Kh5 $2 {[%mdl 8192]} (86... f3 $1 $11) 87. Bxf4 $18 Kxh4 88. Kf2 Nh5 89. Be5 Kg5 90. Ke3 Nf6 91. Bf4+ Kg6 92. Kd4 Nh5 93. Be5 Nf6 94. Ke3 $2 (94. Bg3 $18 {And now Be1 would win.} d2 95. Bb3) 94... Nh7 $2 {[%mdl 8192]} (94... Kg5 $1 $11 {and Black has nothing to worry.}) 95. Bc3 Ng5 96. Bg4 Kh6 97. Kf4 Nf7 98. Kxe4 d2 (98... Nd6+ $142 99. Kxd3 Kg5) 99. Bxd2+ Kg6 100. Bc3 (100. Kd5 $142 Kg7 101. Ke6 Nd8+ 102. Ke7 Nc6+ 103. Kd6) 100... Nd6+ 101. Ke5 Nf7+ 102. Kf4 Nd8 (102... Nd6 $18 103. Be6 Nb7 104. Bf5+ Kf7) 103. Be1 Nc6 104. Bd7 Ne7 105. Ke5 Kf7 106. Be6+ Kg7 107. Bf2 Nc6+ 108. Kf5 Nd8 109. Bd5 (109. Bb3 $142 Nb7 110. Bd4+ Kh6 111. Ke6 Na5 112. Bd5 Kg5 113. Bb6 Kf4 114. Bxa5) 109... Nf7 110. Bd4+ {White mates.} Kf8 111. Kf6 Nd8 112. Bc4 Nc6 113. Be3 Ke8 114. Bb5 Kd7 115. Bf4 {Precision: White = 71%, Black = 37%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Vorobiov, Evgeny E"]
[Black "Zakhartsov, Vladimir"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2569"]
[BlackElo "2430"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,107,11,8,0,7,11,13,3,15,9,11,0,4,3,4,0,30,29,36,35,39,33,33,22,29,0,0,0,0,0,0,0,22,22,22,22,22,11,11,13,22,22,22,22,22,22,49,49,49,49,49,49,49,22,22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bf4 a5 11. Nc3 Na6 12. Rfd1 {E05: Open Catalan: 5 Nf3 Be7} (12. Rac1 Nb4 13. Ne5 Bxg2 14. Kxg2 c6 15. e4 Nd7 16. Nf3 Qb6 17. Rfd1 Rfd8 18. h4 h6 19. Qe2 Nf6 20. Rd2 {½-½ (88) Meier,G (2630)-Karjakin,S (2783) chess.com INT 2017}) 12... Nb4 {LiveBook: 14 Games} 13. Ne5 {[%cal Re5c6]} Bxg2 14. Kxg2 Nfd5 15. Bd2 $146 ({Predecessor:} 15. e4 Nxf4+ 16. gxf4 Bd6 17. Ne2 Ra6 18. Qb3 Qe8 19. Qf3 f5 20. exf5 {½-½ (84) Cobb,J (2412)-Wells,P (2520) Sunningdale 2008}) 15... f6 16. Nf3 {Black should prevent e4.} f5 17. Bf4 (17. Rac1 {feels hotter.} Qe8 18. Nxd5 Nxd5 19. Qb5 Qxb5 20. axb5 a4 21. Rc2) 17... Nxf4+ 18. gxf4 Nd5 19. Nxd5 Qxd5 (19... exd5 {is interesting.} 20. Qb3 Rf6 21. Ne5 Rh6 22. Rd3 Raa6) 20. Qxd5 exd5 21. Rac1 c6 22. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Ra6 23. b3 Rb6 24. Rc3 Rb4 25. h5 Rf6 26. e3 Rh6 27. Rh1 g6 28. hxg6 Rxh1 $1 29. Kxh1 hxg6 $11 {[%mdl 4096] Endgame KRB-KRN} 30. Kg2 Kg7 31. Kf1 Rb6 32. Ke2 Ra6 33. Rc1 Ra8 34. Rg1 Rg8 35. Ne5 Kf6 36. Rh1 Kg7 37. Kd3 Bd6 38. Nf3 Rh8 {The position is equal.} 39. Rxh8 (39. Rg1 {with more complications.} Rh6 40. Ne5 Kf6 41. Rb1 Rh2 42. Ke2) 39... Kxh8 {KB-KN} 40. Ng5 (40. Ne5 $5 {[%cal Re5f7]} Kg7 41. Nd7 $11) 40... Be7 41. Ne6 b6 42. f3 Kg8 43. e4 dxe4+ 44. fxe4 Kf7 45. d5 fxe4+ 46. Kxe4 {[#] And now Ng5+ would win.} cxd5+ 47. Kxd5 Kf6 {aiming for ...Kf5.} 48. Nd4 Bc5 49. Nf3 Be7 {White must now prevent ...Kf5.} (49... Kf5 $5 {[%cal Rf5f4]} 50. Nh4+ Kf6 $11) 50. Ke4 Bd6 51. Nd2 Ke6 52. Nc4 Bc7 53. Na3 Bd6 54. Nc4 {Precision: White = 73%, Black = 89%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Ghosh, Diptayan"]
[Black "Rakesh Kumar Jena"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "2562"]
[BlackElo "2394"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,98,28,50,54,39,14,45,25,31,30,27,26,19,22,72,72,72,72,67,77,77,74,90,68,74,78,64,78,64,64,64,64,64,64,141,141,141,141,141,0,0,-65,-58,-60,-67,-58,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,13,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nc3 a6 5. Nf3 b5 6. b3 g6 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} (6... Bg4 7. a4 bxc4 8. bxc4 Nbd7 9. a5 e5 10. Be2 Bxf3 11. Bxf3 Bb4 12. Bd2 O-O 13. O-O dxc4 14. Qe2 exd4 15. exd4 Bxa5 16. Qxc4 {1-0 (44) Ding,L (2759)-Svidler,P (2741) Shenzhen 2017}) 7. Bd3 Bg7 8. O-O O-O 9. Bb2 Bb7 10. Qe2 Nbd7 {LiveBook: 6 Games} 11. Rfd1 Re8 12. h3 Qb8 13. c5 $146 ({Predecessor:} 13. Rac1 Nh5 14. Qd2 {1-0 (52) Mareco,S (2470)-Bitelmajer,M (2322) Buenos Aires 2008}) 13... e5 14. dxe5 Nxe5 15. Nxe5 Rxe5 16. Qc2 Bc8 17. Ne2 Re8 18. Bd4 Nd7 19. Bxg7 Kxg7 20. Nd4 Ne5 21. Be2 {And now f4 would win.} Qc7 22. Qc3 Kg8 23. a4 {[%cal Ra4b5]} Bb7 24. Ra2 Qe7 25. Rda1 Rac8 26. axb5 cxb5 ({Black should play} 26... axb5 $14 27. Ra7 Rc7) 27. Rc1 Rc7 28. Rac2 Rec8 29. Bf3 (29. b4 $16) 29... b4 $11 30. Qd2 ({White should try} 30. Qxb4 $11 Nd3 31. Qd2 Nxc1 32. b4) 30... Rxc5 $15 31. Be2 a5 32. Bb5 Qd6 (32... Nd7 $15) 33. Rxc5 $1 $11 {The position is equal.} Rxc5 34. Rxc5 Qxc5 35. Qa2 $1 Nc6 36. Bxc6 Bxc6 37. Nxc6 {[#] Strongly threatening Qa4.} Qc1+ 38. Kh2 Qxc6 39. Qxa5 {[%mdl 4096] Endgame KQ-KQ} Qd6+ 40. Kg1 h5 41. Qa1 Qc5 42. Kf1 d4 43. exd4 Qc2 44. Qa8+ Kg7 {[%cal Rc2d1] [#]} 45. Qf3 Qc1+ 46. Ke2 Qb2+ 47. Kd1 Qb1+ 48. Kd2 Qb2+ 49. Kd1 Qb1+ {Precision: White = 71%, Black = 77%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Sarana, Alexey"]
[Black "Sulskis, Sarunas"]
[Result "1-0"]
[ECO "D43"]
[WhiteElo "2540"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,69,12,20,49,47,80,37,54,40,114,114,114,122,124,109,108,108,106,101,136,133,140,137,391,410,410,410,372,399,425,447,438,441,443,433,383,411,377,375,359,363,367,336,479,479,461,432,29994,29995]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c6 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 g6 8. Be2 {D43: Semi-Slav: 5 Bg5 h6} Bg7 9. O-O (9. e4 O-O 10. e5 Qd8 11. O-O dxc4 12. Bxc4 c5 13. dxc5 Nd7 14. Qe2 Nxc5 15. Rfd1 Qe7 {½-½ (37) Inarkiev,E (2707)-Gelfand,B (2728) Geneve 2017}) 9... O-O 10. e4 dxe4 11. Nxe4 Qf4 12. Qc2 {LiveBook: 3 Games} Nd7 13. c5 {[#]} Rb8 $146 ({Find the theoretical novelty and annotate with similar games:} 13... b6 14. cxb6 Nxb6 15. Rfd1 Bd7 {½-½ (29) Swapnil,S (2438)-Adhiban,B (2567) Kolkata 2012}) 14. Rad1 b6 15. b4 Nf6 {[#]} (15... a5 $14) 16. Nd6 $1 $16 Nd5 17. a3 Bd7 18. g3 Qf6 19. Ne5 Qd8 20. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Ne7 21. h5 $36 {[%mdl 2048] Black is under strong pressure.} g5 22. Bc4 Nc8 $2 {[%mdl 8192]} (22... Nd5 $16) 23. Ndxf7 $18 Rxf7 24. Nxf7 Kxf7 25. Qg6+ Kg8 26. Bxe6+ Kh8 27. Bxd7 Qxd7 28. Rfe1 {[%cal Bf1e1,Be1e6,Be6f6][%mdl 32]} Ne7 29. Qf7 Bf8 30. Re6 Qe8 31. Qf3 Kg8 32. Rde1 Qf7 (32... Qd7 {was called for.} 33. Qf6 Nd5 34. Qg6+ Qg7 35. Rxc6 Qxg6 36. Rxg6+ Kf7) 33. Rf6 Qd5 34. Qd3 {[#] aiming for Rxe7!} Bg7 (34... Qd7 $18 35. b5 cxb5) 35. Rxe7 {Precision: White = 92%, Black = 37%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Schroeder, Jan-Christian"]
[Black "Smirin, Ilia"]
[Result "1/2-1/2"]
[ECO "B41"]
[WhiteElo "2539"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,55,16,21,18,13,21,27,22,29,28,20,64,52,58,61,57,57,79,80,80,80,87,94,92,107,93,93,94,91,91,91,96,96,110,93,87,103,94,87,112,87,85,84,68,67,118,43]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. g3 d5 6. Nb3 {LiveBook: 5 Games. B41: Sicilian: Kan Variation: 5 c4} dxe4 7. Qxd8+ Kxd8 8. N1d2 {The position is equal.} f5 $146 ({Find the theoretical novelty and annotate with similar games:} 8... Nf6 9. Bg2 b5 10. Nxe4 Bb7 11. f3 Nbd7 12. Bd2 Rc8 13. O-O-O Ke8 {½-½ (41) Buhmann,R (2588)-Rehberg,R (2264) Apolda 2017}) 9. f3 exf3 10. Nxf3 Nc6 11. Bf4 {[%mdl 1024] White has compensation.} Nf6 12. O-O-O+ Ke8 13. Bg2 Nd5 14. Bd2 Be7 15. Rhe1 Kf7 16. Na5 {Hoping for Nxc6.} Bf6 17. Nxc6 bxc6 18. c4 Ne7 19. Ng5+ Bxg5 20. Bxg5 Ra7 21. Rd6 h6 22. Bxe7 (22. Bd2 {seems wilder.} a5 23. Re5 a4 24. Be3 Ra6 25. Bf3) 22... Rxe7 23. Bxc6 h5 24. b4 h4 25. b5 hxg3 26. hxg3 axb5 27. cxb5 Bb7 ({Better is} 27... Ra7 $1 $14) 28. Bxb7 {Precision: White = 87%, Black = 76%.} (28. Kb2 $16) 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Bailet, Pierre"]
[Black "Haldorsen, Benjamin"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2536"]
[BlackElo "2362"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,97,29,15,33,7,62,-8,9,-50,-42,-47,-55,-48,-49,-52,-39,-54,-21,-9,34,47,36,41,23,12,14,18,26,22,38,12,120,114,195,195,202,212,193,203,498,498,486,483,505,356,358,362,375,347,328,308,306,308,251,218,315,256,315,315,363,329,364,332,316,288,606,606,595,577,1164,998,1771,1416,6119,6014,953,593,5414,5407,5047,5047,4686,2049]} 1. c4 e5 2. g3 Nc6 3. Bg2 Bc5 4. Nc3 a6 5. e3 Ba7 6. Nge2 {A25: English Opening vs King's Indian with ...Nc6 but without early d3} d6 7. d4 (7. b3 Nge7 8. Bb2 h5 9. h4 Bg4 10. d3 Qd7 11. Qd2 Rb8 12. Rc1 O-O 13. Ne4 {1-0 (51) Topalov,V (2749)-Grischuk,A (2761) Paris 2017}) 7... h5 8. h3 h4 9. g4 {LiveBook: 3 Games} f5 10. gxf5 Bxf5 11. e4 $146 ({White should play} 11. Qb3 $14 Rb8 12. d5) ({Predecessor:} 11. d5 Nce7 12. Ne4 {0-1 (36) Kouskoutis,G (2237)-Rychagov,A (2536) Heraklion 2017}) 11... Bd7 {[%cal Rc6d4]} 12. Be3 (12. dxe5 $11 Nxe5 13. f4 Nxc4 14. e5) 12... exd4 $15 13. Nxd4 Bxd4 14. Bxd4 Qg5 15. Bf3 Nxd4 16. Qxd4 Nf6 17. Ke2 $1 Qe5 18. Qxe5+ dxe5 19. Rag1 Kf7 20. Rg5 Rae8 21. Nd5 $36 {[%mdl 2048] White fights for an advantage.} Nxd5 22. cxd5 {Black should prevent Rhg1.} g6 23. Rhg1 {With the idea Bg4.} Rh6 (23... Bxh3 $11 24. Rxg6 Re7) 24. Bg4 $16 Bb5+ (24... Bxg4+ $16 {was called for.} 25. R1xg4 (25. R5xg4 c6 $16) 25... c6) 25. Ke3 $18 Kf6 {[#]} 26. f4 $1 exf4+ 27. Kxf4 Rxe4+ $2 (27... Rf8 28. b3 Ke7+ 29. Ke3 Rf1 30. Rxf1 Bxf1) 28. Kxe4 Kxg5 {[%mdl 4096] Endgame [#] KRB-KRB} 29. a4 $1 {[%mdl 512]} Bxa4 30. Bd1+ Kf6 {Hoping for ...Bd7.} 31. Bxa4 {KRB-KR} Rh7 32. Bc2 Re7+ 33. Kf3 g5 34. Be4 Rg7 35. Ke3 Ke5 (35... a5 $142 36. Bf3 Ke5) 36. Bf3 Rg6 37. b4 Rg8 38. Rg4 Rg6 39. Bg2 Kd6 40. Kd4 c6 $2 (40... Rg7 41. Re4 Rf7 42. Re6+ Kd7) 41. dxc6 {White is clearly winning.} bxc6 42. Kc4 Kc7 43. Kc5 Kb7 44. Re4 Kc7 45. Bf3 Rf6 46. Bg4 Rf1 47. Re7+ Kd8 48. Ra7 Rc1+ 49. Kd6 {Precision: White = 73%, Black = 42%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Ladva, Ottomar"]
[Black "Neiksans, Arturs"]
[Result "1/2-1/2"]
[ECO "A01"]
[WhiteElo "2532"]
[BlackElo "2582"]
[Annotator "NA RC"]
[PlyCount "12"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. b3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:15]} 2. Bb2 {[%emt 0:00:00]} e6 {[%emt 0:00:14]} 3. Nf3 {[%emt 0:00:04]} b6 {[%emt 0:00:13]} 4. g3 {[%emt 0:00:09]} Bb7 {[%emt 0:00:06]} 5. Bg2 {[%emt 0:00:03]} Be7 {[%emt 0:00:12]} 6. O-O {[%emt 0:00:05]} O-O {[%emt 0:00:05]} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Dastan, Muhammed Batuhan"]
[Black "Bakalchuk, Johnatan"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2529"]
[BlackElo "2394"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,114,101,102,95,97,87,85,72,74,118,60,58,60,60,35,49,40,33,15,15,15,15,15,15,0,0,0,0,0,15,15,16,10,39,0,0,-47,-52,-45,18,0,25,8,11,25,24,21,22,0,8,0,0,0,0,0,0,-6,0,-77,-70,-407,-316,-925,13,13,13,13,12,12,12,12,12,12,12,12,12,12,12,12,13,12,12,16,18,13,16,8,16,8,8,8,8,0,0,0,0]} 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. d4 e5 7. dxe5 Nfd7 8. Qd2 Nc6 {A49: 1 d4 Nf6 2 Nf3 g6 3 g3: Anti-King's Indian systems} 9. Nc3 Ndxe5 10. Nxe5 Bxe5 11. O-O-O {LiveBook: 7 Games} a5 12. Kb1 Be6 13. a4 $146 ({Predecessor:} 13. h3 Bg7 14. f4 f5 15. e4 fxe4 16. Bxe4 {1-0 (46) Sale,S (2445)-Ljubicic,F (2335) Zadar 1994}) 13... Re8 14. h3 f5 15. Nb5 (15. h4 $16) 15... Bxb2 $14 16. Kxb2 Qf6+ 17. Qc3 (17. Kb1 {with more complications.} Re7 18. h4 Bf7 19. h5 g5 20. Nc3) 17... Qxc3+ 18. Kxc3 (18. Nxc3 {feels hotter.} Kg7 19. h4 Rab8 20. Rde1 Ne5 21. e4) 18... Re7 19. Rhe1 Rf8 20. e3 Bc8 21. Kb2 Kg7 22. Rd3 Nb4 23. Rd4 Na6 24. Nc3 Nb4 25. h4 h6 26. Ne2 g5 27. c3 (27. Nc3 {is interesting.} b6 28. Rh1 Bd7 29. Rd2 g4 30. Ra1) 27... Nc6 28. Bxc6 bxc6 29. b4 Ba6 (29... Be6 $15) 30. Nc1 f4 31. hxg5 fxg3 32. gxh6+ Kxh6 33. fxg3 Rf2+ 34. Kb3 axb4 35. Rxb4 (35. Rg4 $5 {[%cal Re1h1]} Kh5 36. Rxb4 $11) 35... Kg5 36. Rb8 Kg4 37. Ra8 Bf1 38. a5 Re5 {...Rb5+ is the strong threat.} 39. c4 {[#]} ({Much worse is} 39. a6 Rb5+ 40. Ka4 Rb1 $15) (39. Rd1 $1 $11 {keeps the balance.}) 39... Rc5 $1 $17 40. a6 $2 {[%mdl 8192]} (40. Rxf1 $15 Rxf1 41. Nd3) 40... Bxc4+ $19 41. Kb4 $2 (41. Ka4 Bxa6 42. Rxa6 Rxc1 43. Rxc1 Ra2+ 44. Kb3 Rxa6 45. Rg1) 41... Bxa6 $2 (41... Rc2 $19 {( -> ...Rb5+)} 42. Ka4 Rb5) 42. Rxa6 $11 {aiming for Nd3.The position is equal.} Rb2+ 43. Ka3 Rb1 44. Ra4+ Kg5 45. Nd3 Rc3+ 46. Ka2 Rxe1 47. Nxe1 {Strongly threatening Re4.} Rxe3 {[%mdl 4096] Endgame KRN-KR} 48. Nc2 Rxg3 49. Ra7 c5 50. Rxc7 Kf6 51. Na3 Ke6 52. Nb5 Kd5 53. Rc8 Rh3 54. Rd8 Kc6 55. Nxd6 Rd3 56. Rc8+ Kd7 57. Rxc5 Rxd6 {Precision: White = 39%, Black = 63%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Ali Marandi, Cemil Can"]
[Black "Zaiatz, Elena"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2526"]
[BlackElo "2316"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,80,-1,25,4,23,19,49,43,108,47,35,62,104,0,11,3,0,0,0,5,0,24,32,21,31,-16,0,0,0,0,0,0,0,0,-6,0,0,0,0,0,26,6,251,179,260,16,17,17,17,14,37,36,40,39,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Bf4 d5 3. e3 g6 4. Nc3 Bg7 5. h4 h6 (5... c6 6. Nf3 Bg4 7. Be2 Nbd7 8. Ne5 Bxe2 9. Qxe2 h5 10. O-O-O Qa5 11. Kb1 {1-0 (44) Karjakin,S (2781)-Giri,A (2771) Stavanger 2017}) 6. Be2 {D00: 1 d4 d5: Unusual lines} a6 7. Nf3 c5 $146 ({Predecessor:} 7... Nbd7 8. Ne5 e6 9. b4 Qe7 10. a3 Nxe5 11. Bxe5 h5 {½-½ (21) Salomon,J (2477)-Esen,B (2528) Lienz 2017}) 8. dxc5 {White is slightly better.} Nbd7 (8... Qa5 $14) 9. Nxd5 (9. Qd4 $16) 9... Nxd5 $14 10. Qxd5 {And now 0-0-0 would win.} Bxb2 {[#]} 11. Rb1 (11. O-O $1 $16 Bxa1 12. c6 (12. Rxa1 Nf6 $16)) 11... Qa5+ $1 $11 12. Kf1 Bg7 $1 13. Ne5 Nxe5 $1 14. Bxe5 Be6 $1 {[%cal Re6d5]} 15. Qe4 Bxe5 16. Qxe5 O-O 17. Bd3 {h5 is the strong threat.} (17. h5 $5 {[%cal Rh5g6]} Qxa2 18. Rxb7 $16) 17... Rac8 18. Rxb7 Rxc5 19. Qf4 Qxa2 20. Kg1 Bc4 21. Rxe7 Bxd3 22. cxd3 Qb1+ (22... Rf5 $5 {[%cal Rf5f4]} 23. Qg3 a5 $14) 23. Kh2 Qxd3 24. e4 Rh5 25. g3 {Strongly threatening Rc1.} g5 $2 (25... Rc5 $11) 26. Qf5 Qe2 {[#]} (26... Qd6 {keeps fighting.}) 27. Kh3 $2 (27. Rg1 $1 $18 {Hoping for e5.} a5 28. e5) 27... gxh4 28. Qg4+ Qxg4+ 29. Kxg4 {[%mdl 4096] Endgame KRR-KRR} Rg5+ 30. Kxh4 Rb8 31. f4 Rg6 32. Rc1 (32. f5 $5 {[%cal Rf5g6]} Kf8 33. Ra7 $14 (33. fxg6 Kxe7 34. gxf7 a5 $11)) 32... Rb2 {[%cal Rb2h2] The position is equal.} 33. Kh3 (33. Re8+ {looks sharper.} Kg7 34. Rh1 a5 35. Ra8 Ra2 36. Ra7) 33... Rb3 $1 {[%cal Rb3g3]} 34. Rg1 Re3 35. e5 Kf8 36. Ra7 h5 37. Kh4 Re2 {[%cal Re2h2]} 38. Rh1 Rg4+ 39. Kxh5 Rxg3 40. Rxa6 Kg7 {Precision: White = 46%, Black = 57%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Blomqvist, Erik"]
[Black "Gokerkan, Cem Kaan"]
[Result "0-1"]
[ECO "B91"]
[WhiteElo "2525"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,100,41,10,20,9,9,4,29,8,2,1,20,12,36,0,19,8,12,0,19,0,0,0,0,-40,-31,-31,-76,-66,13,-11,25,12,7,0,0,0,47,0,5,0,47,0,59,22,74,7,18,0,0,-20,-20,-20,-20,-53,-20,-25,-20,-71,0,-16,-17,-314,-256,-337,-282,-456,-433,-458,-450,-339,-293,-273,0,-441,-196,-366,-366,-419,-391,-2930,-2843,-2573,-2502,-2329,-1852]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. b3 b5 $146 {[%cal Bb7b5,Bb5b4][%mdl 32] B91: Sicilian Najdorf: 6 g3} ({Predecessor:} 9... Nc6 10. Nxc6 bxc6 11. Bb2 Qa5 12. Na4 Bg4 13. Qe1 Qh5 14. f3 Bh3 15. g4 Qh6 16. Rd1 g5 17. Bc1 Bxg2 18. Kxg2 {0-1 (50) Carlsen,M (2855)-Nakamura,H (2787) Bilbao 2016}) 10. a4 b4 11. Nd5 Bb7 {The position is equal.} (11... e5 $5 {[%cal Rf6d5]} 12. Bg5 (12. Nxb4 Qb6 $11) 12... Bb7 $14) 12. Re1 e5 $1 {[#] aiming for ...Nxd5.} 13. Nxf6+ Qxf6 14. Nf3 Nc6 15. Be3 a5 16. Qd3 Rfc8 17. Rad1 Bf8 18. h4 Nd8 19. Bg5 Qe6 20. Kh2 Rc3 21. Qb5 {[#] Strongly threatening Bxd8.} f6 22. Be3 (22. Bh3 $2 Qf7 $19) 22... Qc8 ({Better is} 22... Rxc2 $15 23. Nd2 Rc3) 23. Nd2 (23. Bh3 $5 {[%cal Rh3c8]} Qc7 24. Nd2 $15) 23... Bc6 24. Qf1 Bb7 25. Rc1 Ba6 26. Qh1 Qc6 27. Bf1 Bxf1 28. Qxf1 Nf7 29. Nc4 {[%cal Bd2c4,Bc4e3,Be3d5][%mdl 32]} Bh6 (29... f5 $1 $11) 30. Rcd1 {Hoping for Bxh6.} Rxc2 (30... Bxe3 $11 {keeps the balance.} 31. Rxe3 Rxc2) 31. Kg1 (31. Bxh6 $16 {Bd2 is the strong threat.} Nxh6 32. Rxd6) 31... Bxe3 $11 32. Nxe3 Rc5 (32... Qxe4 $2 33. Nd5 $18) 33. Nd5 Kg7 34. Qd3 Rf8 35. Re2 Qd7 36. Red2 Qh3 37. Qf3 (37. Qe2 $11) 37... Qe6 (37... Nd8 $17) 38. Kg2 Rfc8 39. h5 $2 {[%mdl 8192]} (39. Rd3 $11) 39... Ng5 $19 40. h6+ Kf7 {( -> ...Qh3+)} 41. Qe2 $2 (41. Qxf6+ {was forced.} Qxf6 42. Nxf6 Kxf6 43. Rxd6+ Kf7 44. Rd7+ Kg8 45. Rg7+ Kh8 46. Rgd7) 41... Qh3+ 42. Kg1 R8c6 43. Rd3 Rc2 (43... Qxh6 44. Ne3 $19) 44. Qe3 {Threatens to win with Qa7+.} R2c5 $2 ({Wrong is} 44... Qxh6 $2 45. Qa7+ Kg8 46. Ne7+ (46. Nxf6+ Kh8 $11) 46... Kf8 47. Nxc6 $18) ({Black should play} 44... R6c5 $19 45. Nb6 Qxh6) 45. f4 $2 {[%mdl 8192]} ({Avoid the trap} 45. Nxf6 $2 Kxf6 46. Rxd6+ Rxd6 $19) (45. Qe2 $1 $11 {and White is okay.} f5 46. exf5 gxf5 47. g4 Qxg4+ 48. Qxg4 fxg4 49. Ne3) 45... exf4 (45... Rc2 $142 {[%csl Gc2][%cal Rh3g2]} 46. R3d2 exf4 47. Qxf4 Qe6) 46. Qd4 $2 (46. Nxf4 Qxh6 47. Rxd6 Nh3+ 48. Kg2 Nxf4+ 49. Qxf4 Rc2+ 50. R1d2 Qxf4 51. gxf4) 46... Qe6 47. gxf4 Nxe4 {White must now prevent ...Qg4+.} 48. Re3 $2 (48. Kf1 Nc3 49. Nxc3 bxc3 50. Re3) 48... Qg4+ {Black is clearly winning.} 49. Kf1 Rc1 50. Qa7+ Rc7 $1 {Precision: White = 25%, Black = 43%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Meskovs, Nikita"]
[Black "Krivonosov, Oleg"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2495"]
[BlackElo "2397"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,76,0,-2,4,-8,-9,-8,0,0,0,-18,0,-15,-16,-20,0,0,0,0,13,0,15,19,42,36,60,67,58,72,64,64,68,57,60,58,125,129,147,74,78,58,56,5,40,31,42,24,26,23,56,56,56,56,135,98,132,138,196,199,246,237,229,217,214]} 1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. O-O Nd7 5. d3 Ngf6 6. Qe1 e5 7. h3 {A07: Réti Opening: New York and Capablanca Systems} (7. e4 dxe4 8. dxe4 Qc7 9. Nbd2 Nc5 10. a4 a5 11. Nc4 Nfd7 12. Bd2 b6 13. Ne3 Bh5 14. Nh4 f6 15. Kh1 Ne6 16. f4 {½-½ (25) Sasikiran,K (2688)-Sunilduth Lyna,N (2564) Helsingor 2017}) 7... Bxf3 8. Bxf3 {LiveBook: 7 Games} a5 9. a4 $146 {The position is equal.} ({Predecessor:} 9. Nc3 Bd6 10. e4 dxe4 11. Nxe4 Nxe4 12. dxe4 O-O 13. Be3 Qe7 14. Rd1 Rfd8 {½-½ (40) Gross,S (2330)-Pachman,L (2370) Bayern 1993}) 9... Qc7 (9... Bb4 $5 {[%cal Rb4e1]} 10. c3 Bc5 $11) 10. Nd2 Bb4 11. e4 O-O 12. Qe2 Rfe8 13. Nb3 h6 14. c3 Bf8 (14... Bc5 $5) 15. Be3 b6 16. Bg2 Rad8 (16... Nc5 $5 {[%cal Rc5b3]} 17. Qc2 Ne6 $11) 17. Rfd1 Nc5 18. Nxc5 Bxc5 19. d4 $36 {[%mdl 2048] White is more active.} Bf8 20. dxe5 $1 Nxe4 21. Bxe4 dxe4 22. Rxd8 Rxd8 {[#]} 23. e6 $1 {[%mdl 512]} fxe6 24. Qc4 Rd5 (24... Qe5 $14) 25. Qxe4 $16 e5 26. Qg6 (26. b4 $142) 26... Rd6 27. Qe8 c5 28. Kh2 ({White should play} 28. h4 $14) 28... Qe7 (28... Qf7 $5 {[%cal Rf7e8]} 29. Qxf7+ (29. Qxe5 Qb3 $14) 29... Kxf7 $11) 29. Qb5 Qf7 30. Re1 Qd5 31. h4 (31. Bc1 {feels hotter.} Qf3 32. Qc4+ Kh7 33. Qf1 Re6 34. Qe2) 31... Qd3 32. Qxd3 Rxd3 $14 {[%mdl 4096] Endgame KRB-KRB} 33. Kg2 e4 (33... Rd7 $14) 34. Bc1 Bd6 35. Kf1 {White is clearly better.} h5 (35... Kf7 $16 {keeps fighting.}) 36. Rxe4 $18 Kf7 37. Ke2 Rd5 38. Bg5 Bf8 {Precision: White = 70%, Black = 41%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Valsecchi, Alessio"]
[Black "Gluhovsky, Mark"]
[Result "1-0"]
[ECO "E69"]
[WhiteElo "2493"]
[BlackElo "2281"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,99,39,38,56,39,46,42,47,47,117,126,124,120,125,121,130,150,136,148,152,146,133,131,134,129,136,122,122,74,110,109,105,98,99,104,105,101,105,106,183,146,197,134,242,245,417,349,417,414,383,388,477,475,608,606,598,555,480,574,505,327,282,129,235,245,245,240,227,196,29991,29992,29993,29994,29994,29994,29994,29995,29995,29993]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 d6 5. Bg2 O-O 6. Nc3 Nbd7 7. O-O e5 8. e4 c6 9. h3 Re8 10. Re1 exd4 11. Nxd4 Nc5 12. Rb1 {LiveBook: 67 Games. E69: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4 c6 9 h3} h5 $146 ({Predecessor:} 12... a5 13. Bf4 a4 14. Qc2 Nfd7 15. Red1 Ne5 16. b4 axb3 17. axb3 Qb6 18. Be3 Qb4 19. Nce2 Ned7 20. Kh2 Nf6 21. f3 Ncd7 22. Bd2 Qb6 23. b4 Qc7 24. Bc3 Ne5 25. Bb2 Ra2 26. Qb3 {½-½ (57) Wojtaszek,R (2726)-Jobava,B (2707) Warsaw 2010}) 13. Bg5 Ne6 14. Nxe6 {White is slightly better.} Bxe6 15. c5 {Black must now prevent Qf3.} Qc8 (15... Qd7 $14) 16. cxd6 $16 Bxh3 17. e5 Nh7 18. Be7 Bf5 19. Rc1 Qd7 20. Na4 Rxe7 21. Nc5 ({Don't take} 21. dxe7 Qxe7 22. Qd6 Re8 $14) 21... Qd8 22. dxe7 Qxe7 23. Qd6 Re8 24. Qxe7 Rxe7 25. Rcd1 b6 26. Rd8+ Nf8 27. Nd3 c5 28. Be4 $36 {[%mdl 2048] White has strong initiative.} Be6 29. a3 Bc4 30. f4 Bb5 (30... Kh7 $16) 31. b4 c4 (31... Kh7 $16 32. bxc5 Ne6) 32. Nb2 (32. Nf2 $18) 32... Rc7 (32... h4 $16) 33. Nd1 $18 Bh6 $2 {[#]} (33... Bd7 {was necessary.} 34. Ne3 Be6) 34. Nc3 Bc6 35. Bxc6 Rxc6 36. Ra8 Kg7 37. Rxa7 h4 38. b5 Re6 39. Re4 hxg3 40. Kg2 Re8 41. Nd5 Rd8 42. Ne3 ({Much less strong is} 42. Nxb6 $6 c3 $18) (42. Rxc4 Rxd5 43. Rcc7 Ne6 $16) (42. Nc7 $18 {and the rest is easy.}) 42... c3 (42... Ne6 $16) 43. e6 ({Not} 43. Kxg3 Ne6 $14) 43... Nxe6 44. Rxe6 Bxf4 45. Kf3 g5 $2 {[#]} (45... Bb8 $18) 46. Nf5+ {White mates.} Kh8 47. Rxf7 Be5 48. Rxe5 g4+ 49. Kxg3 c2 50. Rc7 {Precision: White = 76%, Black = 45%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Pavlov, Sergey"]
[Black "Kovchan, Alexander"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2475"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "19"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,19,25,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 $146 ({Predecessor:} 6. f3 e5 7. Nb3 Be6 8. Be3 h5 9. Nd5 Bxd5 10. exd5 Nbd7 11. Qd2 g6 12. O-O-O Nb6 13. Qa5 Bh6 14. Bxh6 Rxh6 15. Qd2 Rh8 16. f4 exf4 17. Qxf4 {½-½ (57) Ponomariov,R (2699)-Wang,H (2698) Danzhou 2017}) 6... Ng4 7. Bc1 Nf6 8. Be3 Ng4 9. Bc1 Nf6 10. Be3 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Tang, Andrew"]
[Black "Zakhartsov, Viacheslav V"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2475"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,101,-24,-27,-29,-38,-27,-33,-8,-14,-11,-36,-19,-44,0,0,0,0,-7,0,-7,-19,-1,-29,0,-31,-6,-9,-8,-5,0,0,0,0,-6,-72,0,0,0,-1,-1,-2,-2,-2,21,21,21,21,21,21,21,21,21,21,21,20,21,21,21,21,21,21,21,20,20,20,20,20,21,20,21,0,0,0,8,8,8,0]} 1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 d6 5. h3 O-O 6. Be2 Nbd7 7. O-O b6 8. a4 a5 9. Nbd2 Bb7 10. c3 Re8 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} 11. Bh2 e5 12. dxe5 dxe5 13. Nc4 (13. Qc2 Qe7 14. Rfd1 Red8 15. Bg3 Ne8 16. Nc4 f6 17. Nfd2 Bf8 18. Rdb1 {0-1 (60) Cori Tello,J (2609)-Salgado Lopez,I (2662) Baku 2016}) 13... Ne4 14. Qc2 {LiveBook: 3 Games} Qe7 15. Rad1 Rad8 $146 ({Predecessor:} 15... Nec5 16. Nfd2 Bc6 17. Ra1 f6 18. Bf3 e4 19. Be2 Nf8 {½-½ (59) Baron,M (2302)-Bourmistrov,D (2193) Melbourne 2003}) 16. Rfe1 Ng5 17. Ncd2 Nc5 18. Nxg5 (18. b4 $5 {[%cal Rb4c5]} Nxf3+ 19. Bxf3 Bxf3 20. Nxf3 axb4 21. cxb4 $11) 18... Qxg5 {[%csl Gb7][%cal Rg5g2] [#]} 19. Bg3 Qe7 20. b4 axb4 21. cxb4 Na6 22. Bxa6 Bxa6 23. b5 Bb7 24. Nf3 Bf6 25. Qc3 Rxd1 26. Rxd1 Kg7 27. Rc1 Qe6 28. a5 bxa5 29. Qxa5 h5 {aiming for ...Bxf3.} 30. Qa4 {[#]} ({Wrong is} 30. Rxc7 $2 Bxf3 31. gxf3 h4 $17) ({Avoid the trap} 30. Qxc7 $2 Rc8 $19) (30. Bh4 $11 {keeps the balance.}) 30... Ra8 (30... Bxf3 $1 $17 31. gxf3 Qxh3) 31. Qc4 $11 {The position is equal.} Qxc4 32. Rxc4 Ra1+ (32... Bxf3 $5 33. gxf3 Ra5 $11) 33. Kh2 Bxf3 34. gxf3 h4 35. Bxh4 Bxh4 36. Rxh4 {[%mdl 4096] Endgame KR-KR} Rb1 37. Rc4 Rxb5 38. Rxc7 Rb4 39. Kg3 g5 40. Rc1 (40. Re7 $5 {[%cal Re7e5]} Kf6 41. Re8 $14) 40... Kg6 41. e4 (41. Rc5 $5 {[%cal Rc5e5]}) 41... Rb3 42. Rc6+ f6 43. Rc1 Ra3 44. Kg4 Ra2 45. Rf1 Ra4 46. Kg3 Ra3 47. Rh1 Rb3 48. h4 gxh4+ 49. Rxh4 Ra3 50. Kg2 Ra4 51. Rh1 {Precision: White = 63%, Black = 60%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Baldauf, Marco"]
[Black "Braun, Arik"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2460"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,61,21,33,36,36,36,33,42,32,53,21,35,36,66,69,95,90,81,80,79,78,74,66,92,56,70,51,43,43,51,51,58,52,66,59,73,78,103,104,103,104,152,134,151,145,212,142,458,443]} 1. Nf3 g6 2. d4 Bg7 3. c4 d6 4. e4 Nc6 5. Be2 Bg4 6. Nbd2 Nf6 7. d5 {A41: 1 d4 d6: Tartakower System and Modern Defence} Nb8 8. O-O {LiveBook: 8 Games} (8. Qc2 Na6 9. h3 Bd7 10. Nb1 c6 11. Nc3 cxd5 12. exd5 O-O 13. Be3 Nc5 14. Nd4 e5 {1-0 (31) Gelfand,B (2721)-Stefanova,A (2512) Caleta 2017}) 8... Bxf3 9. Bxf3 {White is slightly better.} Nbd7 10. g3 $146 ({Predecessor:} 10. Qc2 O-O 11. Nb1 c6 12. Nc3 Qc7 13. b3 Ne5 14. Be2 b5 {0-1 (67) Banusz,T (2599)-Zaragatski,I (2467) Deizisau 2013}) 10... O-O 11. Bg2 a5 12. Rb1 c6 13. b3 Ne8 14. Nf3 Nc7 15. Re1 Na6 16. Be3 Qc7 17. Qe2 Rfe8 18. Nd4 e5 19. dxe6 fxe6 20. Red1 e5 21. Nc2 Nf6 22. Rd2 Nc5 23. f3 Rad8 24. Rbd1 Qe7 25. Bh3 h5 26. Ne1 b6 27. Bg5 Na6 28. Qe3 c5 29. Nc2 Nb8 (29... Nb4 $16 {might work better.} 30. Nxb4 axb4) 30. Qd3 Nc6 $2 {[%mdl 8192] [#]} (30... Kh7 $16 {is tougher.}) 31. Bxf6 $1 {Precision: White = 78%, Black = 38%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Berzinsh, Roland"]
[Black "Jumabayev, Rinat"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2444"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,129,-6,0,0,23,14,26,31,45,0,0,10,18,0,0,-16,8,0,32,35,52,66,172,146,127,18,205,197,200,209,211,14,124,88,98,33,116,33,36,33,41,35,29,-106,-98,-386,495,495,495,488,491,487,480,476,465,465,476,476,471,435,491,461,464,464,445,439,494,430,600,533,456,530,499,455,517,449,450,450,450,359,450,385,509,357,497,182,182,182,196,66,79,61,358,358,358,343,343,343,343,0,343,0,343,343,340,333,312,271,264,249,235,235,235,0,235,0,235,0,235,235]} 1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 4. e3 Bg7 5. h4 c6 6. Be2 {A45: Trompowsky Attack} (6. Nf3 Bg4 7. Be2 Nbd7 8. Ne5 Bxe2 9. Qxe2 h5 10. O-O-O Qa5 11. Kb1 {1-0 (44) Karjakin,S (2781)-Giri,A (2771) Stavanger 2017}) 6... h5 {LiveBook: 3 Games} 7. Nf3 Bf5 8. Ng5 $146 {White has an edge.} ({Find the theoretical novelty and annotate with similar games:} 8. Ne5 Nbd7 9. f3 Qa5 10. Qd2 Nxe5 11. Bxe5 O-O-O {½-½ (19) Birkholz,O (2068)-Winterholler,C (2044) chess24.com 2015}) 8... O-O 9. f3 c5 10. g4 Bd7 11. Qd2 Qa5 12. Rg1 Nc6 13. O-O-O c4 14. e4 dxe4 15. Bxc4 hxg4 16. fxe4 e5 (16... b5 $14 17. Bxb5 (17. Nxb5 Nh5 $14) 17... Nh5) 17. dxe5 $1 $18 Nxe5 18. Bb5 (18. Bb3 $1 $16) 18... Nh5 $2 (18... Nf3 $11 {and Black has nothing to worry.} 19. Nxf3 Bxb5) 19. Bxe5 $1 (19. Bxd7 Nxd7 20. Bd6 (20. Qxd7 Nxf4 21. Qxg4 Bxc3 $17) (20. Rxg4 $2 Bxc3 21. Qxc3 Qxc3 $19) 20... Bxc3 $15) 19... Bxe5 20. Qxd7 Rad8 21. Qe7 $2 (21. Qxg4 $18 Bxc3 22. Bc4 (22. bxc3 Rxd1+ 23. Rxd1 Qxb5 $14)) 21... Bf6 (21... Rxd1+ $11 {remains equal.} 22. Rxd1 Bxc3) 22. Qc5 {Strongly threatening Rxd8.} Rxd1+ 23. Rxd1 (23. Kxd1 $16 Bxc3 24. bxc3) 23... Bxc3 $1 $14 {[#]} 24. bxc3 $40 {[%mdl 128] White attacks.} (24. e5 $1 $16 Bb4 25. Qc4) 24... a6 $1 25. Nxf7 ({But not} 25. Nh7 Re8 $15) 25... Rxf7 26. Qc8+ Kg7 27. Bc4 (27. Be8 $11 {keeps the balance.} Re7 28. Bxg6) 27... Qxc3 $17 {...b5 is the strong threat.} 28. Rd8 $2 {[%mdl 8192] [#]} (28. Rd7 $17 Rxd7 29. Qxd7+ Kh6 30. Qd2+ Qxd2+ 31. Kxd2) 28... Rf2 $4 {[%mdl 8192]} (28... g3 $1 $19 {[%cal Rg3g2] avoids the disaster.} 29. Rg8+ Kh7) 29. Rd7+ $18 Kh6 {[%csl Gf2][%cal Rc3c2] [#]} 30. Rh7+ $1 {[%mdl 512]} Kxh7 {[%csl Gf2][%cal Rc3c2]} 31. Bg8+ Kg7 {[%cal Rf2f1]} 32. Qxc3+ Kxg8 {[%mdl 4096] Endgame KQ-KRN} 33. Qc8+ Kg7 34. Qxg4 Rf7 35. Qg5 Nf4 36. Kd2 Rd7+ 37. Ke3 Ne6 38. Qg4 Kf6 {[#]} 39. e5+ $1 Kf7 (39... Kxe5 40. Qxg6) 40. Qf3+ Ke8 41. Qf6 Nf8 42. c4 Re7 43. Ke4 Re6 44. Qh8 Re7 45. Qg8 Rc7 46. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Rd7 47. a5 Rc7 48. Qh8 $2 (48. Kd4) 48... Rxc4+ 49. Kd5 Rc7 50. e6 (50. Qf6 $18) 50... Re7 $1 $14 51. h5 {[%cal Bh4h5,Bh5h6][%mdl 32]} Rxe6 $2 {[%mdl 8192]} (51... gxh5 $1 $14 52. Qxh5+ Kd8) 52. h6 $18 {Hoping for Qxf8+.} Re7 53. Qf6 Rd7+ 54. Kc5 Rc7+ 55. Kd5 Rd7+ 56. Kc5 Rc7+ 57. Kb4 Re7 58. Qf4 Rd7 59. Qc4 Re7 60. Qd5 Rd7 61. Qg8 {[%mdl 1024] White has strong compensation.} Rh7 62. Qd5 Rd7 $1 {[%cal Rd7d5]} 63. Qc4 Re7 64. Qf4 Rd7 $1 65. Qe5+ {Precision: White = 41%, Black = 47%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Ochsner, Bjorn Moller"]
[Black "Ovsejevitsch, Sergei"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2443"]
[BlackElo "2596"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,83,21,25,2,4,0,16,18,20,0,0,0,0,0,0,0,0,0,0,-11,-11,-6,-8,-10,-10,-11,-5,-10,-6,-7,-7,-16,-10,-26,-26,-28,-19,-35,-7,-69,-34,-34,-34,-34,-34,-58,-38,-41,-29,-23,-23,-23,-23,-16,-33,-49,-5,-6,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 a6 7. a4 Ba7 8. b4 O-O {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} 9. Re1 h6 10. h3 Re8 11. Nbd2 Be6 12. Bxe6 Rxe6 {LiveBook: 31 Games} 13. Nb3 (13. Qc2 Qd7 14. Nf1 d5 15. Be3 Bxe3 16. Nxe3 {1-0 (41) Anand,V (2786)-So,W (2812) Leuven 2017}) 13... Ne7 {[#]} 14. Be3 $146 ({Predecessor:} 14. Nh4 d5 15. Be3 dxe4 16. Bxa7 Rxa7 17. dxe4 Qxd1 18. Raxd1 {½-½ (41) Alekseev,E (2638)-Goryachkina,A (2452) Khanty-Mansiysk 2016}) 14... Ng6 15. Bxa7 Rxa7 16. d4 exd4 17. Qxd4 Ra8 18. e5 Nxe5 19. Nxe5 Rxe5 20. Rxe5 dxe5 21. Qxe5 Qd5 22. Qxd5 Nxd5 $11 {[%mdl 4096] Endgame KRN-KRN} 23. Rc1 b6 24. a5 Re8 25. Kf1 Re4 26. axb6 cxb6 27. Nd2 Re6 28. Ra1 Nxc3 29. Rxa6 Rd6 30. Ke1 Kh7 31. b5 ({White should play} 31. Ra7 $11) 31... Re6+ 32. Kf1 Nxb5 33. Nc4 Nd6 34. Ne3 Ne4 35. Ra7 Rf6 36. f3 Nc5 37. Rc7 Re6 38. Nd5 Nd3 {[%csl Gd3][%cal Re6e1] [#]} 39. Kg1 f5 40. Rb7 {The position is equal.} Re5 41. Nxb6 Rb5 {Strongly threatening ...Nb4.} 42. Rd7 {Precision: White = 71%, Black = 58%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Lugovskoy, Maxim"]
[Black "Onischuk, Vladimir"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "2440"]
[BlackElo "2610"]
[Annotator "NA RC"]
[PlyCount "11"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

{[%evp 11,11,46]} 1. e4 {[%emt 0:00:00]} d6 {[%emt 0:00:39]} 2. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:04]} 3. Nc3 {[%emt 0:00:00]} g6 {[%emt 0:00:04]} 4. Nf3 {[%emt 0:00:00]} Bg7 {[%emt 0:00:11]} 5. Be2 {[%emt 0:00:00]} O-O {[%emt 0:00:15]} 6. O-O $14 {[%emt 0:00:11]} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Das, Sayantan"]
[Black "Tregubov, Pavel V"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "2436"]
[BlackElo "2593"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,100,19,0,1,-8,0,0,0,-14,18,15,23,-2,31,27,53,62,56,48,56,48,49,43,67,58,50,12,18,0,0,-62,-51,-94,-79,-79,-72,-82,-57,-50,0,-79,-68,-73,0,-18,-16,-85,-81,-93,-88,-70,-81,-89,-82,-81,-88,-80,-78,-118,-109,-223,-231,-208,-228,-219,-217,-205,-215,-253,-241,-261,-248,-356,-326,-320,-319,-380,-374,-408,-404,-383,-383,-1052,-974,-29997,-29998]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 Nd7 8. Bd3 {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves} O-O 9. Qe2 {LiveBook: 5 Games} Nf6 (9... Re8 10. O-O-O Bf6 11. h4 Nf8 12. Ng5 d5 13. Qh5 g6 14. Qf3 h5 15. Qg3 Bg4 {½-½ (66) Anand,V (2783)-So,W (2810) Leon 2017}) 10. O-O-O {The position is equal.} Re8 11. h3 Bd7 12. g4 Bc6 13. c4 $146 ({Find the theoretical novelty and annotate with similar games:} 13. Rhg1 Nd5 14. Kb1 Bf6 15. Nd4 Bxd4 16. cxd4 Nxe3 17. fxe3 {1-0 (30) Dorin,M-Levstein,F Buenos Aires 1976}) 13... Nd7 14. Rhg1 Rb8 15. g5 Bxf3 16. Qxf3 Ne5 17. Qe4 Nxd3+ 18. Qxd3 Qd7 19. Kb1 a6 20. h4 b5 21. c5 Qc6 22. g6 fxg6 23. Qb3+ ({White should try} 23. cxd6 $11 Bxd6 24. Qb3+ Qc4 25. Qxc4+ bxc4 26. Rg4) 23... Kh8 24. cxd6 Bxd6 25. h5 gxh5 26. Qf7 {[%csl Gg1][%cal Rf7g7] [#]} Re7 27. Qxh5 Rf8 28. Rd5 (28. Rh1 $11 Qe4 29. Rdg1) 28... Qe8 29. Qh1 Qc6 (29... g6 $17) 30. Bd4 Rfe8 $1 31. Be3 (31. a4 $11 {remains equal.} Qa8 32. axb5 axb5 33. Rxb5) 31... Be5 $17 32. a3 Bf6 33. Rgd1 Qc4 34. Qh3 Qh4 35. Qf3 Qe4 36. Qh3 b4 $40 {[%mdl 128] Black has strong attack.} 37. Bc5 Re5 38. Qb3 (38. Rxe5 $17 Qxe5 39. Bd4) 38... Rxd5 $19 39. Rxd5 bxa3 40. Bxa3 Qe1+ 41. Ka2 Qxf2 42. Qc4 Qb6 43. Qd3 Qe6 {White must now prevent ...c6.} 44. c4 (44. b3 {was necessary.}) 44... Qe4 45. Qb3 h6 46. Qa4 Re6 47. Rc5 Qd3 48. Rxc7 Re1 {Threatens to win with ...Qb1+.} 49. Rc8+ $2 (49. Qb4 Rf1 50. Rb7) 49... Kh7 50. Qc6 {[#]} Ra1+ $1 {[%mdl 512] Precision: White = 29%, Black = 65%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Gholami, Aryan"]
[Black "Lei, Tingjie"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2434"]
[BlackElo "2514"]
[Annotator "TA"]
[PlyCount "181"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,181,31,0,6,-6,-8,-15,-14,-10,-3,-12,-12,-19,-12,-12,0,-1,0,0,0,-17,0,0,5,0,7,20,85,85,85,85,85,83,103,102,102,110,105,80,115,115,115,81,81,81,81,57,58,58,58,58,58,58,58,51,58,51,51,51,51,51,51,51,51,51,51,51,51,15,15,10,10,10,10,2,2,0,10,10,64,64,64,0,64,51,51,51,51,51,51,51,51,51,51,51,51,0,51,51,51,51,54,51,51,51,51,0,0,0,51,51,51,0,0,0,0,0,0,0,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,4,4,4,6,6,289,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 Bg5 12. g3 {LiveBook: 6 Games. B33: Sicilian: Pelikan and Sveshnikov Variations} (12. h4 $5 {[%cal Rh4g5]} Bh6 13. Nc2 $11) (12. Nc2 Ne7 13. Ncb4 O-O 14. h4 Bh6 15. Bd3 Nxd5 16. Nxd5 Be6 17. Bc2 Rb8 18. Qd3 a5 19. a3 Kh8 20. Rd1 Bg4 21. f3 {½-½ (32) Bologan,V (2640)-Zhigalko,S (2639) Poikovsky 2017}) 12... Be6 13. Bg2 Ne7 14. h4 Bh6 15. Nxe7 Qxe7 16. O-O $146 ({Find the theoretical novelty and annotate with similar games:} 16. Nc2 a5 17. Na3 b4 18. Qa4+ Qd7 19. Nb5 O-O {0-1 (70) Rajput,G (1432)-Aasha,C (1772) Chennai 2016}) 16... O-O 17. Nc2 a5 18. Re1 Rfb8 19. Ne3 Bxe3 20. Rxe3 b4 21. Qd2 Ra6 22. Bf1 Rc6 23. cxb4 axb4 24. a4 {[%cal Ba2a4,Ba4b5][%mdl 32]} Qc7 (24... Rc5 $11 {keeps the balance.}) 25. Bb5 $36 {[%mdl 2048] White has strong initiative.} Rc5 26. Qxb4 Bd7 {[%cal Rd7b5]} 27. Rc3 Bxb5 28. axb5 Qb6 29. Rxc5 dxc5 {[%mdl 4096] Endgame KQR-KQR} 30. Qc3 h6 31. Qxe5 Qxb5 32. Rc1 Re8 33. Qxc5 Qxb2 34. Qc4 Qe5 35. Re1 g5 36. hxg5 hxg5 37. Kg2 Kg7 38. Qe2 Qe6 39. Qh5 (39. Qd2 {keeps more tension.} Kg6 40. Qc2 Rc8 41. Qe2 Re8 42. Qd1) 39... Qg6 40. Qxg6+ (40. Qf3 {looks sharper.} Qc6 41. Kg1 f6 42. Qd3 Re7 43. Kg2) 40... Kxg6 $14 {KR-KR} 41. Kf3 Ra8 42. Rd1 Ra3+ 43. Kg4 {[#] Black must now prevent Rd6+.} Ra4 44. Rd6+ f6 45. Re6 Rb4 46. f3 Ra4 47. Rb6 Rc4 48. Kh3 Rc3 49. Kg4 {[#] Hoping for e5.} Rc4 $1 50. Rb5 Ra4 51. Rf5 Rb4 52. Kh3 (52. Ra5 $14) 52... Ra4 (52... Rb3 $11) 53. g4 Ra3 54. Kg3 Ra4 55. Rd5 Ra2 56. Rd3 Re2 57. Rd1 Kf7 58. Rf1 Ke6 59. Rf2 (59. Ra1 $14) 59... Re1 (59... Rxf2 $1 $11 60. Kxf2 Kd6) 60. Rd2 Ra1 61. Kf2 Ra3 62. Ke2 Ra5 63. Ke3 Ke5 64. Rd8 ({White should play} 64. Rd3 $14) 64... Ra3+ $1 $11 65. Rd3 Ra5 (65... Rxd3+ $11 66. Kxd3 Kf4) 66. Rb3 $14 Rc5 67. Kd3 ({White should try} 67. Rb6 $14) 67... Kf4 $11 68. Kd4 Ra5 69. Rc3 Rb5 70. Ra3 Rb6 71. Kd5 Rb5+ 72. Ke6 Rb6+ 73. Ke7 Rc6 74. Rb3 Ra6 75. Kd7 Ra7+ 76. Ke6 Ra6+ 77. Kf7 Rc6 78. Kg6 f5+ 79. Kh5 fxe4 80. fxe4 {White wants to play e5!} Rc8 $2 {[%mdl 8192]} (80... Rc5 $1 $11) 81. Rb5 $2 ({Better is} 81. e5 $18) 81... Rh8+ $1 {The position is equal.} 82. Kg6 Kxg4 83. e5 Kf4 84. e6 g4 85. e7 Re8 86. Kf7 Rxe7+ 87. Kxe7 g3 88. Kf6 g2 89. Rg5 Kf3 90. Rxg2 Kxg2 91. Ke5 {Precision: White = 49%, Black = 68%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Fruebing, Stefan"]
[Black "Shirov, Alexei"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2417"]
[BlackElo "2648"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,62,71,23,35,16,12,6,14,5,0,-40,-40,-40,-25,-79,-83,-81,-61,-81,-71,-93,-87,-108,-97,-97,-106,-115,-100,-150,-145,-146,-124,-304,-324,-326,-331,-329,-313,-535,-518,-543,-541,-537,-536,-790,-778]} 1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Nf3 d6 5. h3 Nf6 6. a4 O-O 7. Be2 Nbd7 8. Be3 e5 9. dxe5 dxe5 10. Nd2 {[%cal Bf3d2,Bd2c4,Bc4d6][%mdl 32] LiveBook: 37 Games. B08: Pirc Defence: Classical System} Ne8 {[%cal Bf6e8,Be8c7,Bc7e6,Be6d4][%mdl 32]} (10... Qe7 11. Nc4 Ne8 12. O-O Nc5 13. Nd6 Ne6 14. Nxc8 Rxc8 15. Bxa7 Rd8 16. Qc1 Nd6 17. Re1 f5 18. exf5 gxf5 19. Bf1 e4 {0-1 (68) Griffith,K (2319)-Zherebukh,Y (2642) New York 2017}) 11. Nc4 {Black should prevent Bc5.} Nc7 12. Nd6 {The position is equal.} Ne6 13. Bc4 Nd4 14. a5 $146 ({Find the theoretical novelty and annotate with similar games:} 14. Nxc8 Rxc8 15. Ne2 Nb6 16. Bd3 c5 17. c3 Nb3 {0-1 (42) Guido,F (2323)-Dzhumaev,M (2509) Genova 2006}) 14... b5 15. Nxc8 Rxc8 16. Ba2 (16. Bd3 $11) 16... Nc5 $36 {[%mdl 2048] Keeping White busy.} 17. O-O b4 18. Nb1 Nxe4 19. c3 bxc3 20. bxc3 {[#]} Nb5 $1 21. Qc2 Ned6 22. Bc5 e4 23. Rd1 Qf6 24. Na3 Rfd8 ({Don't play} 24... Qxc3 $6 25. Qxc3 Bxc3 26. Nxb5 $15) 25. c4 $2 {[#]} (25. Rac1 $17) 25... Nxa3 $1 $19 26. Bxa3 e3 27. fxe3 Qg5 28. Qf2 $2 (28. Bb2 {was called for.} Qxe3+ 29. Kh2) 28... Ne4 {Black is clearly winning.} 29. Qf3 Bxa1 30. Rxa1 Rd3 31. Bc1 Rcd8 {Precision: White = 42%, Black = 88%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Krupenski, Juri"]
[Black "Kvon, Andrey"]
[Result "1/2-1/2"]
[ECO "A40"]
[WhiteElo "2413"]
[BlackElo "2500"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,77,12,23,15,13,-5,0,0,11,12,12,10,10,10,19,19,19,18,23,10,30,30,86,27,21,22,29,28,38,14,56,47,62,74,128,0,0,0,75,62,122,114,149,81,60,39,193,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 d5 6. Qc2 O-O 7. Bg2 c6 8. Nf3 Nbd7 9. Nbd2 b6 10. O-O Bb7 {E11: Bogo-Indian} 11. b4 (11. Rfd1 Qe7 12. Rac1 Rfd8 13. a3 a5 14. e3 Rac8 15. cxd5 cxd5 {1-0 (95) Istratescu,A (2596)-Shengelia,D (2574) Aschach 2016}) 11... Qe7 {LiveBook: 3 Games} 12. Qb2 a5 $146 ({Predecessor:} 12... Rab8 13. Rfc1 Rfc8 14. e3 h6 15. c5 a5 16. a3 axb4 17. axb4 bxc5 18. bxc5 {½-½ (34) Grigorov,G (2495)-Zysk,R (2404) Porto Rio 2015}) 13. b5 cxb5 14. cxb5 Rfc8 15. a3 Ne8 16. Rfc1 Nd6 17. e3 Qe8 18. a4 Rxc1+ 19. Rxc1 Rc8 20. Ne5 Nf8 (20... f6 $5 {[%cal Rf6e5]} 21. Rxc8 Qxc8 $14) 21. Qa3 f6 {[#]} (21... Rxc1+ $11 {remains equal.} 22. Qxc1 Qc8 23. Qxc8 Bxc8) 22. Rxc8 (22. Nc6 $1 $16 Qd7 23. e4) 22... Nxc8 $11 23. Nd3 Qe7 24. Qc3 Nd6 25. f3 Kf7 26. e4 $36 {[%mdl 2048] White is more active.} Ng6 27. e5 fxe5 (27... Nc4 $142) 28. Nxe5+ ({White has to play} 28. dxe5 $16 Nf5 29. Bh3) 28... Nxe5 29. dxe5 Nf5 {[#]} (29... Nc4 $11) 30. Bh3 $1 $16 g6 (30... d4 $14 31. Qd3 Qb4) 31. Bxf5 $1 exf5 32. Nb3 (32. f4 $142) 32... d4 33. Qc4+ Kg7 $2 ({Better is} 33... Ke8 $1 $14) 34. f4 $2 ({Worse is} 34. Nxd4 Qxe5 35. Qc3 Kf7 $11) (34. Qxd4 $18 Qb4 35. Qd7+ (35. Qxb6 Qe1+ 36. Kg2 Qe2+ 37. Kg1 Qe1+ 38. Kg2 Qe2+ 39. Kg1 Qe1+ $11) 35... Kh6 36. Nd4 (36. Qxb7 Qe1+ 37. Kg2 Qe2+ 38. Kg1 Qe1+ 39. Kg2 Qe2+ 40. Kg1 Qe1+ $11) 36... Qxa4 37. e6 Qa1+ 38. Kf2) 34... Qa3 $1 $11 {The position is equal.} 35. Qxd4 {aiming for Nd2.} Qxb3 36. Qd7+ Kh6 {( -> ...Qe3+)} ({Don't go for} 36... Qf7 $2 37. e6 $18) 37. Qxb7 Qd1+ 38. Kg2 Qe2+ 39. Kg1 {Precision: White = 54%, Black = 35%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Laurusas, Tomas"]
[Black "Kunin, Vitaly"]
[Result "1-0"]
[ECO "E15"]
[WhiteElo "2409"]
[BlackElo "2551"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,51,16,26,14,13,-6,29,29,25,26,24,30,157,159,212,212,315,273,295,285,283,275,275,283,285,268,341,349,444,464,479,462,684,681,661,506,702,542]} 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Ba6 5. b3 Bb7 6. Bg2 Bb4+ 7. Bd2 a5 8. O-O O-O {LiveBook: 713 Games. E15: Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations} 9. Qc1 (9. Bc3 d5 10. Bb2 a4 11. a3 Bd6 12. cxd5 exd5 13. b4 Re8 14. Nc3 Qd7 15. Rc1 Ne4 16. Ne5 Nxc3 17. Rxc3 Qb5 {1-0 (26) Ding,L (2766)-Mamedyarov,S (2747) Huaian 2016}) 9... Re8 $146 ({Predecessor:} 9... h6 10. Bf4 a4 11. Nc3 axb3 12. axb3 Rxa1 13. Qxa1 Be7 14. d5 exd5 15. Nd4 Nc6 16. Nf5 {1-0 (31) Lev,R (2460)-Psakhis,L (2560) Herzliya 1998}) 10. Bf4 Bf8 {The position is equal.} 11. Nc3 Na6 12. Rd1 d5 13. Ne5 Qe7 {[#]} (13... Ne4 $11) 14. Bg5 $1 $36 {[%mdl 2048] White is on the roll.} h6 {[#]} (14... c6 $16 {might work better.} 15. Qf4 Qd8) 15. cxd5 $1 $18 exd5 (15... Rab8 $142) 16. Bxf6 gxf6 17. Bxd5 Bxd5 18. Nxd5 Qd6 19. Ng4 $1 {[%csl LRf6,LRh6][%cal Be5g4,Bg4e3,Be3f5,Bf5g7][%mdl 32]} Bg7 20. Nge3 b5 21. Qc2 Rac8 22. Qf5 {White is clearly winning.} Qe6 23. Qh5 c6 (23... f5 $142 24. Nxf5 Bf8) 24. Nf5 Kh7 25. Nde7 Rcd8 26. Nxg7 {Precision: White = 78%, Black = 27%.} 1-0

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Percivaldi, Martin"]
[Black "Brunello, Sabino"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2407"]
[BlackElo "2566"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,74,8,14,4,31,21,31,30,39,16,22,10,96,52,37,33,31,42,52,51,58,15,17,23,43,38,58,47,91,91,98,91,98,91,91,83,83,83,83,83,87,83,144,151,151,138,173,174,168,129,134,117,120,120,116,115,123,80,80,80,80]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 a5 5. g3 b6 6. Bg2 Bb7 7. Nc3 O-O 8. O-O d6 9. d5 {E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+} e5 (9... Bxc3 $5 10. Bxc3 Ne4 $11) 10. Qc2 $146 ({Predecessor:} 10. Nh4 Nbd7 11. b3 Nc5 12. a3 Bxc3 13. Bxc3 a4 14. b4 Nb3 15. Ra2 Re8 16. b5 Bc8 {1-0 (44) Wallace,J (2355)-Bachmann,A (2645) Douglas 2016}) 10... Nbd7 11. b3 {[%cal Bb2b3,Bb3b4][%mdl 32] White is slightly better.} Nc5 12. a3 Bxc3 $1 13. Bxc3 Qc8 (13... b5 $11) 14. Nd2 c6 {[%cal Rc6d5]} 15. b4 Ncd7 {[%cal Rc6d5]} 16. e4 Qc7 17. Rfc1 Rfc8 18. Qb2 (18. b5 {keeps more tension.} cxd5 19. cxd5 Qd8 20. a4 Rc5 21. Nf1) 18... axb4 19. axb4 {[%cal Ba3b4,Bb4b5][%mdl 32]} Rxa1 20. Qxa1 ({Reject} 20. Rxa1 cxd5 21. exd5 b5 $15) 20... Ra8 21. Qb2 c5 {[#]} 22. b5 $1 Qd8 23. Ra1 Ne8 24. Bh3 Nf8 25. Rxa8 Qxa8 26. Qa1 Qb8 27. Nf1 Nf6 28. f3 (28. Bg2 {looks sharper.} Bc8 29. f4 Ng6 30. f5 Nf8 31. Bf3) 28... Qa8 (28... Bc8 $142 29. Bg2 Ng6) 29. Qxa8 $16 Bxa8 30. Ne3 {[#] Threatens to win with Nf5.} g6 31. Bc8 Kg7 32. Bd2 Ng8 33. Nd1 Ne7 {White is better.} 34. Bh3 Bb7 35. Nb2 Bc8 36. Bxc8 Nxc8 37. Kf2 Nd7 {Precision: White = 54%, Black = 48%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Harsha Bharathakoti"]
[Black "Sasikiran, Krishnan"]
[Result "0-1"]
[ECO "A40"]
[WhiteElo "2404"]
[BlackElo "2688"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,96,21,17,9,12,-18,0,0,9,6,7,-13,0,0,0,-12,0,-10,12,-9,-9,-9,-9,-9,-9,-9,-12,-9,-9,-9,-14,-7,-13,-26,-18,-128,-128,-128,-128,-128,-121,-128,-121,-128,-129,-121,-118,-117,-80,-300,-41,-118,-118,-93,-80,-80,-80,-80,-80,-93,-85,-93,-93,-128,-128,-611,-484,-29987,-2122,-790,-781,-726,-684,-29970,-29968,-29973,-29975,-29990,-29991]} 1. d4 e6 2. c4 f5 3. Nf3 Nf6 4. g3 d5 5. Bg2 c6 6. O-O Bd6 7. b3 O-O 8. Ba3 b6 9. Qc1 Bb7 10. Bxd6 Qxd6 11. Qa3 {A90: Dutch Defence: Miscellaneous and Modern Stonewall (with ...Bd6)} (11. Nc3 Nbd7 12. Rd1 Ne4 13. e3 a5 14. Qb2 Ba6 15. Rac1 Rfc8 16. a3 Qe7 17. Bf1 Bb7 18. Bg2 Ba6 19. Bf1 Bb7 20. Bg2 Ba6 {½-½ (21) Rozum,I (2573)-Oparin,G (2605) Sochi 2017}) 11... c5 12. Nbd2 Nbd7 13. e3 $146 {The position is equal.} ({Predecessor:} 13. Rac1 Rfe8 14. Rfd1 a6 15. e3 Rad8 16. cxd5 exd5 17. dxc5 bxc5 18. Nc4 Qe7 {½-½ (39) Yim,T (2169)-McCambridge,V (2465) Las Vegas 2016}) 13... a5 14. Rac1 a4 15. bxa4 Bc6 16. dxc5 Nxc5 17. Nd4 (17. a5 $5) 17... Rxa4 18. Qb2 Bd7 {Strongly threatening ...Nd3.} (18... Nd3 $5 {[%cal Rd3b2]} 19. Qxb6 Nxc1 20. Rxc1 Qa3 $15) 19. Rb1 (19. cxd5 Nd3 $17) 19... e5 20. Nb5 Bxb5 $1 21. Qxb5 {White wants to play cxd5.} Rxa2 22. Rfd1 d4 $36 {[%mdl 2048] Black is more active.} 23. exd4 $1 exd4 {Hoping for ...Nfe4.} ({But not} 23... Qxd4 $2 24. Ne4 $18) 24. Qxb6 Qxb6 25. Rxb6 Nfe4 26. Nxe4 fxe4 27. Rb5 (27. Rxd4 $11 {keeps the balance.} Rfxf2 28. Bf1) 27... Rfxf2 $17 28. Bh1 {[#]} Na4 $1 {[%cal Ra4c3] And now ...Nc3 would win.} 29. Bxe4 Nc3 30. Bd5+ Nxd5 31. cxd5 {[%mdl 4096] Endgame KRR-KRR} Rg2+ 32. Kh1 Rxh2+ 33. Kg1 Rhg2+ 34. Kf1 $2 (34. Kh1 $17) 34... Rxg3 $2 ({Better is} 34... Raf2+ $19 35. Ke1 Rh2 36. Rxd4 Ra2 37. Rb8+ Kf7 38. Rf4+ Ke7) 35. Rxd4 (35. Rb8+ $15 Kf7 36. Rxd4) 35... Rf3+ 36. Kg1 Ra7 37. Kg2 Rf6 38. Kg3 Kf7 39. Rb3 Rd7 40. Rf3 g5 {[%cal Bg7g5,Bg5g4,Bg4g3,Bg3g2][%mdl 32]} 41. Rxf6+ Kxf6 {KR-KR} 42. Kg4 $2 {[%mdl 8192] [#]} (42. d6 $17) 42... h5+ $1 $19 {[%mdl 512]} 43. Kxh5 (43. Kf3 $19 Ke5 44. Re4+ Kxd5 45. Re8) 43... Kf5 (43... Rh7+ $142 44. Kg4 Rh4+ 45. Kf3 Rxd4 46. Ke3 Rxd5 47. Ke4 Rf5 48. Ke3 g4 49. Ke4 g3 50. Ke3 g2 51. Kd3 g1=Q 52. Kc3 Qg4 53. Kd2 Rf3 54. Kd1 Qg2 55. Ke1 Rf1#) 44. Kh6 g4 45. Rd1 g3 46. d6 g2 {Black mates.} 47. Rg1 Rxd6+ 48. Kh5 Rg6 {Precision: White = 28%, Black = 59%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Kumsiashvili, Nikoloz"]
[Black "Kantans, Toms"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2403"]
[BlackElo "2541"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,74,18,30,30,50,-1,49,0,6,-24,-15,-125,-125,-125,-125,-126,-127,-138,-138,-138,-139,-140,-126,-268,-276,-297,-297,-479,-485,-494,-475,-477,-489,-472,-354,-296,-262,-279,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 O-O 8. Be2 c5 9. Rb1 b6 10. O-O Bb7 11. Qd3 Nd7 {[%cal Bb8d7,Bd7f6,Bf6g4][%mdl 32] LiveBook: 10 Games. D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3} (11... Ba6 12. Qe3 Qd7 13. dxc5 Bxe2 14. Qxe2 bxc5 15. Rd1 Qe6 16. h4 Nc6 17. Ng5 Qf6 18. Be3 Rad8 19. Bxc5 Qxc3 20. Rdc1 Qa5 {½-½ (32) Mamedyarov,S (2800)-Nepomniachtchi,I (2742) Geneve 2017}) 12. Qe3 Rc8 $146 ({Predecessor:} 12... cxd4 13. cxd4 Nf6 14. d5 Rc8 15. Ba3 Ne8 16. Rfc1 Nd6 17. Nd4 Qd7 18. h3 Rxc1+ 19. Rxc1 Rc8 20. Bg4 Rxc1+ 21. Qxc1 {1-0 (41) Wicht,J (2182)-Peschlow,P (2237) Germany 2004}) 13. a4 (13. d5 $14) 13... Qc7 14. Ba3 Nf6 15. d5 e6 16. d6 (16. dxe6 $1 $11 Bxe4 17. exf7+ Rxf7 18. Rbe1) 16... Qc6 $17 17. e5 {[#] Hoping for Bb5.} Ng4 $1 {[%cal Rg4e3]} 18. Qg5 {[#]} Qe4 $1 {[%cal Rg7e5]} (18... Qxa4 19. d7 $15) 19. Rfe1 Nxe5 20. Nxe5 Qxe5 21. Qe7 Ba8 $40 {[%mdl 128] Black has strong attack.} ({Avoid the trap} 21... Qxc3 $2 22. Bb2 $18 (22. Qxb7 Qxa3 23. Qxa7 Bd4 $15)) 22. Ba6 {[#]} (22. Bf1 $17 Qf4 23. c4) 22... Qd5 $1 $19 {[%csl Ga8][%cal Rd5g2][%mdl 512]} 23. f3 Rcd8 (23... Bxc3 24. Bxc8 Bd4+ 25. Kh1 $14) 24. Qxa7 $2 (24. Bb2) 24... Bxc3 25. Rbd1 Qa2 26. Bc1 {[%cal Ba3c1,Bc1f4,Bf4e5][%mdl 32] and the idea Bh6 leaves White hopeful.} Bxe1 27. Rxe1 Rxd6 28. Qe7 Rfd8 ({Not} 28... Qxa4 29. Qxd6 Qxa6 30. Bh6 $11) 29. Bf4 Rd1 $2 ({Less strong is} 29... Qxa4 30. Be5 $17) (29... e5 $19 30. Bxe5 Rd1) 30. Bf1 $11 {The position is equal.} Qxa4 31. Be5 R8d5 32. Rxd1 Rxd1 33. Qf6 {[%csl Ge5][%cal Rf6h8]} Kf8 {And now ...Bb7 would win.} 34. Qh8+ Ke7 {aiming for ...Bb7.} 35. Bf6+ Kd6 {White must now prevent ...Bb7.} 36. Qb8+ Kc6 37. Qc8+ Kd6 {Precision: White = 37%, Black = 67%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Kaasen, Tor Fredrik"]
[Black "Sanal, Vahap"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "2399"]
[BlackElo "2539"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,68,12,8,10,20,14,13,0,14,10,14,-81,0,0,38,37,43,46,33,26,362,333,350,325,319,304,303,308,301,267,405,407,467,450,602,588,689,679,716,688,670,669,771,762,731,702,656,201,362,380,364,-409,-403]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 O-O 6. c3 d6 7. a4 a6 8. h3 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} h6 9. Nbd2 (9. Re1 Ba7 10. Nbd2 Ne7 11. d4 Ng6 12. Bf1 Re8 13. Qc2 Nh7 14. dxe5 dxe5 15. Nc4 Qf6 {½-½ (56) Nepomniachtchi,I (2742)-Radjabov,T (2724) Geneve 2017}) 9... Ba7 {LiveBook: 14 Games} 10. b4 {The position is equal.} Ne7 11. Re1 Ng6 12. Nf1 (12. d4 {with more complications.} Re8 13. Bb2 Nf4 14. Bf1 Be6 15. Qc2) 12... d5 13. exd5 Nxd5 14. Nxe5 $146 (14. Bd2 $11 {keeps the balance.}) ({Find the theoretical novelty and annotate with similar games:} 14. Qb3 c6 15. Ra2 Qf6 {½-½ (27) Vohl,G (1895)-Debevec,B (2260) ICCF email 2007}) 14... Nxe5 (14... Nxc3 $17 15. Qf3 Nxe5 16. Rxe5 Bd4) 15. Rxe5 $11 Nxc3 (15... Qf6 {seems wilder.} 16. Rxd5 Qxf2+ 17. Kh2 Qg1+ 18. Kg3 Qf2+) 16. Qe1 $1 {And now Be3 would win.} b5 17. axb5 axb5 18. Bxf7+ Rxf7 $4 {[%mdl 8192] [#]} (18... Kxf7 $11 {and Black stays safe.} 19. Qxc3 Qd4 20. Qxd4 (20. Qxc7+ $2 Kg8 $19) 20... Bxd4 21. Rxa8 Bxe5) 19. Rxa7 $1 $18 ({And not} 19. Re8+ {[#]} Qxe8 $1 {[%mdl 512]} 20. Qxe8+ Rf8 $15) 19... Rxa7 20. Re8+ Qxe8 21. Qxe8+ Rf8 22. Qe5 Na4 23. Qxb5 Kh7 (23... Nb6 {keeps fighting.} 24. Bb2 Bd7) 24. Ng3 Ra6 25. Be3 Rd8 26. Qe5 Rad6 27. Nh5 {[%csl Gh5][%cal Re5g7]} Rg8 28. Qe4+ Kh8 29. Nf4 Rgd8 30. Ng6+ Kg8 31. Ne7+ Kh8 32. Qa8 $2 (32. Qe5) 32... Ba6 $2 (32... Nb6 {might work better.} 33. Qb8 Ba6 34. Qxc7 Nd5 35. Nxd5 Rxd5) 33. Qa7 {Hoping for Bf4.} Nc3 34. Bc5 $4 {[%mdl 8192]} ({Not} 34. Qxc7 Nd5 $18) (34. Nf5 $18 {was the only winning move.} Nb5 35. Qc5 (35. Nxd6 Nxa7 36. Nf7+ Kh7 $16)) 34... Nb5 {Precision: White = 61%, Black = 37%.} 0-1

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Korchmar, Vasiliy"]
[Black "Berelowitsch, Alexander"]
[Result "1/2-1/2"]
[ECO "D09"]
[WhiteElo "2398"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,62,31,19,32,25,18,0,0,0,1,10,11,12,10,16,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,-2,112,0,0,0,510,-64,0,0,0]} 1. d4 {[%cal Bd2d4,Bd4e5][%mdl 32]} d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Nge7 6. Bg2 Ng6 7. O-O Ngxe5 {D09: Albin Counter Gambit: Main line with 5 g3} 8. Nbd2 {[%cal Bb1d2,Bd2b3,Bb3c5][%mdl 32]} Be7 (8... Nxf3+ 9. Nxf3 Bc5 10. Ne1 O-O 11. Nd3 Be7 12. Bf4 a5 13. Qc1 Bf6 14. Rd1 Qe7 15. e3 {0-1 (30) Belous,V (2584)-Morozevich,A (2731) Moscow 2014}) 9. Nb3 {LiveBook: 3 Games} Nxf3+ 10. Bxf3 Bf6 11. Nc5 (11. Bxc6+ $5 bxc6 12. Qd3 $11) 11... O-O 12. Bf4 $146 ({Predecessor:} 12. Qb3 Qe7 13. Nxb7 Ne5 14. Bg2 Rb8 15. Bf4 c5 {0-1 (15) Kuenitz,K (1755)-Marder,S (1993) Caleta 2010}) 12... Qe7 13. Nd3 Ne5 14. Nxe5 Bxe5 15. Bxe5 Qxe5 16. Qd2 c6 17. Rfd1 Rd8 $1 18. e3 {[%cal Re3d4]} Qf6 19. Qe2 Be6 20. Rxd4 Rxd4 21. exd4 Qxd4 22. Rc1 Rd8 23. b3 Kf8 24. Kg2 h6 (24... Qd2 $5 {[%cal Rd2c1]} 25. Rd1 Qxd1 26. Qxd1 Rxd1 27. Bxd1 Ke7 $11) 25. Re1 a5 26. h3 Kg8 27. Qe5 Kf8 (27... Qxe5 $11 28. Rxe5 a4) 28. Qe2 (28. Qxa5 $16 {Hoping for Rd1.} Re8 29. g4) 28... Qd3 29. Qe5 {[#] aiming for Rd1.} Qd2 $2 {[%mdl 8192]} (29... Qd4 $11) 30. Qe3 $2 (30. Rd1 $18 Qxd1 31. Bxd1 Rxd1 32. Qb8+ Ke7 33. Qxb7+ Bd7 34. Qc7) 30... Qd4 (30... Qxe3 $1 $15 31. Rxe3 a4) 31. Qe2 a4 {Precision: White = 59%, Black = 57%.} 1/2-1/2

[Event "7th RTU Open 2017"]
[Site "Riga"]
[Date "2017.08.13"]
[Round "9"]
[White "Ikeda, Junta"]
[Black "Schneider, Ilja"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2397"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "LAT"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,45,0,0,0,0,18,16,9,32,25,70,80,40,66,58,54,47,6,78,79,140,140,140,136,404,391,738,756,748,738]} 1. Nf3 Nf6 2. g3 b5 3. Bg2 Bb7 4. O-O e6 5. d3 Be7 6. e4 d6 7. Nbd2 O-O {A05: Réti Opening: 1 Nf3 Nf6} 8. Re1 c5 (8... Nbd7 9. e5 dxe5 10. Nxe5 Bxg2 11. Kxg2 Nxe5 12. Rxe5 Nd5 13. a4 a6 14. Qf3 Nb4 15. axb5 Nxc2 16. Rxa6 {0-1 (30) Darcyl,T (2405)-Mareco,S (2655) Buenos Aires 2017}) 9. a4 a6 {LiveBook: 3 Games. The position is equal.} 10. e5 dxe5 11. Nxe5 Bxg2 12. Kxg2 {With the idea axb5.} Qd5+ 13. Qf3 Bd6 $146 ({Find the theoretical novelty and annotate with similar games:} 13... Qxf3+ 14. Kxf3 Nfd7 15. Nxd7 Nxd7 {½-½ (29) Vukic,M (2500)-Vukovic,Z (2065) Cetinje 1991}) 14. axb5 {Strongly threatening Ndc4.} Bxe5 {[#]} 15. Rxe5 $1 {[%mdl 512]} Qxe5 16. Qxa8 axb5 17. Ne4 {Hoping for Bf4.} Nbd7 (17... Nd5 $1 $11 {keeps the balance.}) 18. Qc6 $16 b4 (18... c4 $142) 19. Nxf6+ Nxf6 20. Bf4 $36 {[%mdl 2048] White has strong initiative.} Qxb2 $2 {[%mdl 8192] [#]} (20... Qd5+ $16 21. Qxd5 Nxd5) 21. Ra8 $1 $18 {[%cal Ra8f8]} g5 $2 (21... h5 22. Rxf8+ Kxf8 23. Qc8+ Ke7 24. Qxc5+ Ke8 25. Qc8+ Ke7 26. Qc7+ Nd7 27. Bd6+ Kf6 28. Qxd7 Qxc2 29. Bxb4 Qb2 30. Qe7+ Kg6) 22. Rxf8+ Kxf8 23. Qxc5+ {Precision: White = 89%, Black = 26%.} 1-0

