[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

