[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

