20 PARTIDAS DEL MEMORIAL STEINITZ FIDE INTERNET 2020

[Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.17"] [Round "17"] [White "Svidler, Peter"] [Black "Bu, Xiangzhi"] [Result "1-0"] [ECO "C24"] [WhiteElo "2754"] [BlackElo "2760"] [Annotator "TA"] [PlyCount "33"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,33,9,17,0,175,182,250,217,323,319,418,411,416,408,389,380,377,301,313, 304,450,456,529,535,1141,1129]} 1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 (4... Be7 5. Bb3 d6 6. O-O O-O 7. Nbd2 Nbd7 8. c3 Nc5 9. Bc2 Bg4 10. Nc4 Bh5 11. Ne3 d5 12. Nf5 Re8 13. Qe2 Bf8 14. h3 Qc7 {1/2-1/2 (35) Svidler,P (2751)-Bu,X (2710) Tbilisi 2017}) 5. Bb3 a5 {White must now prevent ...a4.} 6. Nc3 { C24: Bishop's Opening: 2...Nf6.} ({Wrong is} 6. Nxe5 $2 a4 $19) 6... d4 $2 ( 6... Bb4 $11 7. a3 (7. Nxe5 $2 a4 $19) 7... Bxc3+ 8. bxc3 a4) 7. Nxe5 $18 dxc3 (7... Be6 $142) 8. Nxf7 {[%mdl 64] [#] Double Attack. White is clearly better.} (8. Bxf7+ Ke7 $11) 8... Qe7 $146 (8... Bb4 $142 9. Nxd8 cxb2+ 10. Bd2 bxa1=N) ( {Predecessor:} 8... Qc7 9. Nxh8 Bb4 10. O-O a4 11. Bf7+ Kf8 12. bxc3 Bxc3 13. Ba3+ c5 14. d4 g6 {1-0 (26) Moiseenko,V (2526)-Guimaraes,D (2322) Moscow 2019}) 9. Nxh8 Be6 10. bxc3 g6 11. O-O Bg7 12. Nxg6 hxg6 13. Ba3 {[%mdl 64] [#] Deflection} Qxa3 14. Bxe6 Qxc3 (14... Nbd7 {keeps fighting.} 15. Rb1 Qe7) 15. Rb1 {White is clearly winning.} b5 16. d4 {Hoping for Rb3.} Na6 17. Rb3 { Black got outplayed after the opening. Accuracy: White = 85%, Black = 4%.} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.17"] [Round "18"] [White "Bu, Xiangzhi"] [Black "Le, Quang Liem"] [Result "1-0"] [ECO "A30"] [WhiteElo "2760"] [BlackElo "2690"] [Annotator "TA"] [PlyCount "49"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 22,49,25,12,61,75,190,201,212,208,222,221,220,114,273,272,283,152,225, 216,278,205,359,352,318,294,582,594,910,908]} 1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 Be7 7. d4 cxd4 8. Qxd4 d6 9. Rd1 a6 10. Ng5 Bxg2 11. Kxg2 O-O 12. Nce4 {Hoping for Nxf6+.} Ne8 {was the old line (12...Nc6). A30: Symmetrical English: Double Fianchetto and Hedgehog.} 13. Qd3 {[#] And now Nxh7! would win.} h6 $146 {[#]} (13... g6 $16) ({Predecessor:} 13... g6 14. Nf3 f5 15. Neg5 Qc8 16. Qe3 e5 17. Qb3 Bxg5 18. c5+ Kh8 19. Bxg5 bxc5 20. Be7 { 1-0 (32) Bu,X (2670)-Papin,V (2570) Guimaraes 2012}) 14. Nh7 $1 $18 {[%mdl 512] } Nc6 {White is clearly better.} (14... Kxh7 15. Ng5+) 15. Nxf8 $40 {[%mdl 128] Black is in trouble.} Bxf8 16. Bf4 Ra7 17. Qf3 (17. Bxd6 Nxd6 18. Nxd6 Rd7 $16) ({Stronger than} 17. Nxd6 Nxd6 18. Bxd6 Rd7 $11) (17. f3 $18) 17... Qc7 $2 ( 17... g5 $16) 18. Rac1 {c5! is the strong threat.} f5 19. Nc3 (19. c5 $18 fxe4 20. Qxe4) 19... Qc8 (19... g5 $16 {was worth a try.}) 20. h4 Rd7 21. e4 { Threatens to win with exf5.} g6 $2 (21... Rf7 {was necessary.} 22. Kg1 Ne7) 22. exf5 gxf5 23. Qh5 Kh7 $2 {[#]} (23... Rf7 24. Bxh6 Ne5 25. Bxf8 Kxf8) 24. Nd5 $1 {[%mdl 512]} Rb7 {[#]} (24... exd5 25. Qxf5+) 25. Qxe8 $1 {[%mdl 576] Remove Defender. White took control after the opening. Accuracy: White = 65%, Black = 14%.} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.16"] [Round "9"] [White "Xiong, Jeffery"] [Black "Korobov, Anton"] [Result "1-0"] [ECO "D13"] [WhiteElo "2724"] [BlackElo "2667"] [Annotator "ChessBase"] [PlyCount "51"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [TimeControl "180+2"] 1. d4 d5 2. c4 {[%emt 0:00:04]} c6 {[%emt 0:00:04]} 3. Nf3 {[%emt 0:00:01]} Nf6 {[%emt 0:00:01]} 4. cxd5 {[%emt 0:00:01]} cxd5 {[%emt 0:00:01]} 5. Nc3 { [%emt 0:00:00]} Nc6 {[%emt 0:00:01]} 6. Bf4 {[%emt 0:00:01]} a6 {[%emt 0:00:04] } 7. Rc1 {[%emt 0:00:01]} Bf5 {[%emt 0:00:05]} 8. e3 {[%emt 0:00:01]} e6 { [%emt 0:00:02]} 9. Qb3 {[%emt 0:00:01]} Ra7 {[%emt 0:00:14]} 10. Be2 {[%emt 0: 00:02]} Bd6 {[%emt 0:00:06]} 11. Bxd6 {[%emt 0:00:13]} Qxd6 {[%emt 0:00:02]} 12. Na4 {[%emt 0:00:06]} O-O {[%emt 0:00:16]} 13. O-O {[%emt 0:00:01]} Rb8 { [%emt 0:00:11]} 14. Nc5 {[%emt 0:00:13]} Qd8 {[%emt 0:00:29]} 15. Qa3 {[%emt 0: 00:14]} h6 {[%emt 0:00:11]} 16. Nxb7 {[%emt 0:00:22]} Raxb7 {[%emt 0:00:11]} 17. Rxc6 {[%emt 0:00:01]} Rxb2 {[%emt 0:00:02]} 18. Bxa6 {[%emt 0:00:01]} Ne4 { [%emt 0:00:15]} 19. Rfc1 {[%emt 0:01:03]} Kh7 {[%emt 0:00:11]} 20. Rc8 { [%emt 0:00:16]} Qb6 {[%emt 0:00:11]} 21. Rxb8 {[%emt 0:00:44]} Qxb8 {[%emt 0: 00:00]} 22. Rf1 {[%emt 0:00:01]} Rc2 {[%emt 0:00:13]} 23. Bd3 {[%emt 0:00:03]} Rc3 {[%emt 0:00:02]} 24. Qa6 {[%emt 0:00:03]} Nc5 {[%emt 0:00:23]} 25. Bxf5+ { [%emt 0:00:00]} exf5 {[%emt 0:00:02]} 26. dxc5 {[%emt 0:00:00]} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.15"] [Round "2"] [White "Mamedyarov, Shakhriyar"] [Black "Dubov, Daniil"] [Result "0-1"] [ECO "D45"] [WhiteElo "2716"] [BlackElo "2720"] [Annotator "TA"] [PlyCount "54"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,54,16,3,34,24,29,0,5,0,0,-19,-14,-52,-41,-68,-62,-64,-45,-101,-36, -199,-56,-55,0,0,0,-56,-54,-80,-68,-135,-43,-61,-32,-47,-47,-41,-48,-1962,-622, -1950,-1842,-29991,-29990,-29990,-29991]} 1. d4 d5 2. c4 e6 3. Nc3 c6 4. e3 Nf6 5. Nf3 Nbd7 6. Qc2 {[#]} a5 $146 {D45: Semi-Slav: 5 e3.} ({Predecessor:} 6... Bd6 7. Bd3 O-O 8. O-O e5 9. cxd5 cxd5 10. e4 exd4 11. Nxd5 Nxd5 12. exd5 h6 13. Nxd4 Qh4 14. Nf3 Qh5 15. Bh7+ Kh8 16. Qf5 Qxf5 17. Bxf5 Nf6 18. Bc2 b6 19. Rd1 Bb7 20. Bb3 Rad8 21. Be3 {1/2-1/2 (30) Nepomniachtchi,I (2784)-Ding,L (2791) chess.com INT 2020}) 7. h3 Be7 8. g4 dxc4 {The position is equal.} 9. Bxc4 b5 10. Bd3 (10. Be2 {seems wilder.} O-O 11. e4 Nb6 12. Bd3 Nfd7 13. e5) 10... b4 11. Ne4 Nxe4 12. Bxe4 ({But not} 12. Qxc6 Nec5 $1 $17 {[%mdl 512]}) 12... Bb7 13. Nd2 (13. Bxc6 $2 Rc8 $19) 13... Rc8 14. a3 (14. b3 $15) 14... O-O (14... Ba6 $17 15. Bd3 Bxd3 16. Qxd3 c5) 15. Bxh7+ Kh8 16. Be4 $1 Ba6 17. Bd3 $1 { [%cal Rd3a6]} Bb7 18. Be4 $1 Nf6 19. O-O Nxe4 20. Nxe4 {[#]} (20. Qxe4 $15 Qd7 21. Qd3) 20... c5 (20... f5 $1 $17 {[%cal Rf5e4]} 21. Nc5 Bxc5 22. Qxc5 Qh4 { [%mdl 64] Double Attack}) 21. Nxc5 $15 Bxc5 (21... Bf3 $5 {[%cal Re7d6]} 22. e4 Bxc5 23. dxc5 Qh4 $15) 22. dxc5 f5 {...Bf3 is the strong threat.} ({Much weaker is} 22... Qd5 $6 {[#]} 23. e4 $1 $11 {[%mdl 512]}) 23. axb4 Bf3 { Strongly threatening ...Qh4.} 24. Kh2 $2 {[%mdl 8192]} ({Don't go for} 24. Rxa5 $2 Qh4 $19) (24. Qc3 $15) 24... Qc7+ $19 25. Kg1 fxg4 26. hxg4 Qe7 27. Qg6 Rf6 {Accuracy: White = 64%, Black = 79%.} 0-1 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.16"] [Round "12"] [White "Anton Guijarro, David"] [Black "Bu, Xiangzhi"] [Result "0-1"] [ECO "A06"] [WhiteElo "2590"] [BlackElo "2760"] [Annotator "TA"] [PlyCount "58"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,58,14,15,1,17,22,16,18,8,0,5,0,27,0,23,-4,4,-4,47,0,0,0,0,-42,-55, -52,-43,-138,-121,-340,-349,-337,-83,-77,566,-708,-708,-715,-712,-707,-705, -678,-681,-1113,-1058,-29993,-789,-29994,-29991]} 1. Nf3 d5 2. b3 c5 3. e3 Nc6 4. Bb5 Bd7 5. Bb2 Nf6 6. O-O e6 7. c4 {A06: Réti Opening: 1 Nf3 d5.} a6 8. Bxc6 Bxc6 9. Ne5 {The position is equal.} Qc7 $5 {[%mdl 4] [#] An interesting side line.} 10. cxd5 $146 ({Predecessor:} 10. Nxc6 Qxc6 11. Bxf6 gxf6 12. cxd5 Qxd5 13. Nc3 Qf5 14. Rc1 Rg8 15. f4 O-O-O 16. Qc2 Qxc2 17. Rxc2 f5 18. d4 cxd4 19. Nb5+ Kb8 20. Nxd4 Rd5 {1/2-1/2 (20) Kazmierczuk,Z (2110)-Schott,R (2176) ICCF email 2018}) 10... Bxd5 11. d3 Be7 12. Nd2 O-O 13. Rc1 Rfd8 14. Qe2 Rac8 ( 14... b5 $11) 15. f4 (15. e4 $5 {[%cal Re4d5]}) 15... b5 16. e4 Bb7 17. Ng4 Nxg4 18. Qxg4 {[%csl Gb2][%cal Rg4g7]} g6 {Strongly threatening ...c4.} 19. f5 (19. Qe2 $1 $15) 19... exf5 $1 $17 (19... Rxd3 20. fxg6 hxg6 21. Nf3 $18) 20. Rxf5 $2 (20. exf5 $17 c4 21. d4 (21. fxg6 Qb6+ {[%mdl 64] Double Attack} 22. d4 Qxg6 $17)) 20... Rxd3 $19 21. Nf3 {And now Ne5 would win.} Rf8 $2 (21... c4 $19 {has better winning chances.} 22. Ne5 Qb6+ 23. Kh1 c3) 22. Ne5 $17 Re3 $2 { [%mdl 8192]} (22... Rd2 $17 {and life is bright.} 23. Bc3 Bc8 {[%mdl 64] Pin} 24. Bxd2 Bxf5 25. exf5 Qxe5) 23. Nxf7 $4 {[%mdl 8192]} (23. Rcf1 $18 Rxe4 24. Nxf7 $1 {[%mdl 512]}) 23... Rxf7 $19 24. Rxf7 Kxf7 25. Rf1+ Ke8 26. Qe6 Qd6 27. Qg8+ Kd7 28. e5 {[#]} Qd5 (28... Qd2 $142 $1 29. e6+ {[#]} Kc7 $1 {[%mdl 512]} 30. Be5+ Rxe5 31. Qd8+ Bxd8 32. Rf7+ Kc8 $1 {[%mdl 512]} 33. Rc7+ Kxc7 34. h3 Qxg2#) 29. e6+ Rxe6 {Accuracy: White = 45%, Black = 56%.} 0-1 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.16"] [Round "10"] [White "Korobov, Anton"] [Black "Grischuk, Alexander"] [Result "1-0"] [ECO "D20"] [WhiteElo "2667"] [BlackElo "2765"] [Annotator "TA"] [PlyCount "59"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,59,11,0,0,0,8,6,9,11,15,16,0,-44,-39,-34,35,0,44,42,39,50,54,0,6,0, 60,68,75,37,56,47,44,-58,-58,-86,-77,-82,-75,-67,70,-511,442,438,427,429]} 1. d4 d5 2. c4 dxc4 3. e4 Nf6 4. e5 Nd5 5. Bxc4 Bf5 6. Ne2 e6 7. O-O Nb6 8. Bb3 Nc6 9. Nbc3 Qd7 {D20: Queen's Gambit Accepted: 3 e3 and 3 e4.} 10. Be3 O-O-O 11. Qc1 Kb8 {The position is equal.} 12. Rd1 Qe8 {[#]} 13. Na4 $5 $146 { [%mdl 8] An interesting novelty.} ({Predecessor:} 13. Nf4 f6 14. exf6 gxf6 15. d5 exd5 16. Ncxd5 Nxd5 17. Bxd5 Bd6 18. Qc3 Be4 19. Qc4 {1/2-1/2 (21) Fridman, D (2627)-Dziuba,M (2582) Germany 2020}) 13... Nd5 14. Nc5 Bxc5 15. Qxc5 Nce7 ({ Black should try} 15... Bg4 $15 16. Rd2 Bxe2 17. Rxe2 Qe7) 16. Rac1 h5 17. Nc3 c6 18. Bg5 {Threatens to win with Bxd5.} Rd7 19. Na4 (19. f3 $14) 19... f6 20. exf6 $1 gxf6 {[#]} ({Black should play} 20... b6 $11 21. Qa3 gxf6) 21. Bxf6 $1 $14 {[%mdl 512]} Rg8 {next ...Rxg2+! is good for Black.} (21... Nxf6 22. Qe5+) 22. Be5+ (22. Bxd5 $5 Nxd5 23. Be5+ Ka8 24. Nc3 $14) 22... Ka8 23. Qa3 $1 $36 { [%mdl 2048] White has good play.} h4 24. Rc5 (24. Rd2 $14) 24... Qd8 $1 $15 25. Re1 b5 $1 {[%cal Rb5b4]} 26. Bxd5 Nxd5 27. Rxd5 Rxd5 (27... exd5 $15 28. Nc5 Qg5) 28. Nc5 $2 {[%mdl 8192] [#]} (28. Qc3 $14 {is the one way to stay ahead.} Qd7 29. Nc5) 28... Rxd4 $4 {[%mdl 8192] [#]} (28... Rxe5 $1 $19 {[%mdl 512] and life is good for Black.} 29. dxe5 (29. Rxe5 $2 {loses.} Qg5 $19) 29... Qd5) 29. Qa6 $1 $18 {[%cal Ra6c6][%mdl 512]} Qb6 {Hoping for ...Rdg4!} 30. Bxd4 { Accuracy: White = 58%, Black = 73%.} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.15"] [Round "2"] [White "Korobov, Anton"] [Black "Bu, Xiangzhi"] [Result "0-1"] [ECO "D12"] [WhiteElo "2667"] [BlackElo "2760"] [Annotator "TA"] [PlyCount "64"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,64,37,34,31,31,18,45,20,31,27,29,26,35,40,44,22,36,39,32,29,48,30,54, 29,17,20,50,43,34,16,18,6,35,21,32,0,27,-20,-11,-74,8,-337,-322,-358,-206,-606, -605,-660,-673,-1002,-974,-1715,-1681]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Bg6 7. Nxg6 hxg6 8. Bd2 {8.Bd2 was played by the boomers. D12: Slav Defence: 3 Nf3 Nf6 4 e3 Bf5.} Nbd7 9. g3 Bd6 10. Qb3 {White wants to play c5.White is slightly better.} Rb8 11. Bg2 O-O 12. O-O dxc4 13. Qxc4 e5 14. Rad1 Nb6 15. Qb3 exd4 16. exd4 Qd7 17. Bg5 {[#]} Rfe8 $5 $146 {[%mdl 8] An interesting novelty.} ({Predecessor:} 17... Qf5 18. Bxf6 Qxf6 19. a4 Qd8 20. f4 Nd7 21. d5 Nf6 22. Kh1 c5 23. Qc2 a6 {1/2-1/2 (41) Dreev,A (2607)-Georgiev,K (2649) Sibenik 2007}) 18. Bxf6 gxf6 19. d5 {Ne4 is the strong threat.} c5 20. Ne4 Kg7 21. Qc3 Be5 22. Qxc5 Na4 23. Qb4 f5 24. Ng5 b5 {[%cal Bb7b5,Bb5b4] [%mdl 32]} 25. b3 Nc3 $36 {[%mdl 2048] Black is more active.} 26. Rd2 (26. Rd3 $11 Rbc8 27. d6) 26... Qd6 ({Better is} 26... Rbc8 $17 27. Qa3 Bf6) 27. Qa5 $2 {[%mdl 8192] [#] Now White is beyond hope.} ({Avoid the trap} 27. Qh4 $2 Rh8 $19) (27. Qxd6 $1 $11 Bxd6 28. Nf3) 27... Bf6 $19 28. h4 Re7 (28... b4 $142 29. Ra1 Ne2+ {[%mdl 64] Discovered Attack} 30. Rxe2 Rxe2) 29. Nf3 $2 (29. a3) 29... b4 {Black is clearly winning.} 30. a4 {White hopes to continue with Rc1.} Rb6 31. Nd4 Bxd4 {[%mdl 64] [#] Overworked Piece} 32. Rxd4 Ne2+ {[%mdl 64] Double Attack. Accuracy: White = 44%, Black = 66%.} 0-1 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.16"] [Round "7"] [White "Carlsen, Magnus"] [Black "Bu, Xiangzhi"] [Result "1-0"] [ECO "C42"] [WhiteElo "2887"] [BlackElo "2760"] [Annotator "TA"] [PlyCount "63"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 18,63,33,29,29,0,34,29,29,19,29,17,57,28,36,19,23,8,38,21,19,17,28,31, 43,57,339,335,419,420,410,420,566,548,515,490,1109,976,1347,1276,29991,29983, 29986,29981,29978,29978,29993,29994]} 1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Nxe5 O-O 5. Nd3 Bxc3 6. dxc3 Nxe4 7. Nf4 Re8 8. Be2 d6 9. O-O Nd7 10. c4 Ndc5 { C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} 11. f3 Nf6 12. b3 Qe7 {...Qe5 is the strong threat.White has an edge.} 13. Rf2 Qe5 14. Rb1 {[#]} a5 $146 ({Predecessor:} 14... Bd7 15. Bf1 Bc6 16. Qd2 Nfe4 17. fxe4 Nxe4 18. Qe3 Nc3 19. Qxe5 dxe5 20. Ra1 exf4 21. Bxf4 {0-1 (64) Artemiev,V (2709) -Firouzja,A (2607) St Petersburg 2018}) 15. Qd2 h6 16. Bb2 Qg5 17. Bf1 Ne6 18. Nd5 Nxd5 19. cxd5 Nf4 {White must now prevent ...Nh3+.} 20. Kh1 Nxd5 21. f4 $1 $36 {[%cal Rf4g5][%mdl 2048] White has the initiative.} Qf5 $2 {[%mdl 8192] [#] Black cannot hold the game after this.} (21... Qh4 $14) 22. g4 $1 $18 {[%cal Rg4f5][%mdl 512]} Qe6 (22... Qxg4 23. Qxd5) 23. Re2 Ne3 24. Bg2 Qxg4 25. Rxe3 Rxe3 26. Qxe3 Bf5 (26... Qe6 $142 27. Qc3 {[%mdl 64] Double Attack} f6 28. Qxc7 Kh8) 27. Rg1 Qh5 28. Bxb7 Rb8 29. Bf3 {White mates.} Qh4 30. Bxg7 Bg6 31. Bc3 Qh3 {[#]} 32. Rxg6+ $1 {Accuracy: White = 90%, Black = 39%.} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.15"] [Round "6"] [White "Korobov, Anton"] [Black "Le, Quang Liem"] [Result "0-1"] [ECO "E17"] [WhiteElo "2667"] [BlackElo "2690"] [Annotator "TA"] [PlyCount "66"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,66,-2,9,6,14,7,20,26,16,0,0,-12,-5,-25,-24,-40,41,12,33,-29,-41,-36, -5,-12,-16,-111,-116,-122,-102,-87,-75,-164,-75,-91,-38,-330,-306,-554,-535, -731,-722,-767,-774,-830,-633,-910,-771,-3733,-3050,-29981,-29982]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 O-O 7. Qc2 c5 8. d5 exd5 9. Ng5 h6 10. h4 {E17: Queen's Indian: 4 g3 Bb7 5 Bg2 Be7.} Na6 11. cxd5 Nb4 {[%mdl 64] Double Attack} (11... hxg5 12. hxg5 Nb4 13. Qb1 $14) 12. Qd1 {[#] The position is equal.} d6 $146 ({Predecessor:} 12... hxg5 13. hxg5 Nh7 14. a3 Na6 15. e4 g6 16. f4 f5 17. gxf6 Bxf6 18. Qg4 Qe8 {1-0 (38) Ponomariov,R (2705) -Korotylev,A (2600) Moscow 2007}) 13. a3 Na6 14. Qc2 Nc7 15. Bf4 b5 16. Rd1 b4 (16... a5 $15) 17. Nce4 {White wants to mate with Nxf6+.} Nce8 (17... hxg5 $6 18. Nxf6+ Bxf6 19. hxg5 $18) 18. Nxf6+ (18. axb4 $1 $14 cxb4 19. Nxf6+ Nxf6 20. Ne4) 18... Nxf6 $11 19. Ne4 Rc8 ({But not} 19... Nxd5 $6 20. Ng5 $16) (19... Nxe4 {seems wilder.} 20. Bxe4 a5 21. Bd3 Bf6 22. Kf1 Ba6) 20. Nxf6+ Bxf6 21. g4 (21. O-O $11) 21... Bxh4 $17 22. Bxd6 Bxf2+ ({Of course not} 22... Qxd6 $6 23. Rxh4 Rfe8 24. g5 $11) 23. Kxf2 Qxd6 {[#]} 24. Bf3 {[#]} (24. g5 $1 $17 { [%mdl 512]}) 24... Qf6 (24... Rfe8 $1 $19 25. g5 Re5 26. gxh6 g6 27. h7+ Kh8 28. axb4 cxb4) 25. Rh5 Rfd8 {[#]} (25... Rfe8 $17 26. g5 Qe5 27. gxh6 Qe3+ { [%mdl 64] Double Attack} 28. Kf1 g6 29. h7+ Kh8) 26. Rg1 $2 {[%mdl 8192] Now White is beyond hope.} (26. g5 $1 $15 {[%mdl 512]} Qb6 (26... hxg5 27. Qh7+) 27. gxh6) 26... Rxd5 $19 27. g5 $2 (27. Rxd5 Bxd5 28. axb4) 27... Rxg5 28. Rgxg5 hxg5 29. Qh7+ Kf8 30. Rh1 Rd8 {Threatens to win with ...Bxf3.} 31. Qh8+ Ke7 32. Qh2 Qd4+ 33. Kf1 Bxf3 {Accuracy: White = 35%, Black = 65%.} 0-1 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.15"] [Round "2"] [White "Anton Guijarro, David"] [Black "Grischuk, Alexander"] [Result "0-1"] [ECO "E93"] [WhiteElo "2590"] [BlackElo "2765"] [Annotator "TA"] [PlyCount "65"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 20,65,31,25,31,21,22,1,16,0,50,-20,34,-17,46,-25,-26,-58,-16,-103,-111, -110,-97,-101,-87,-139,-141,-181,-152,-237,-249,-264,-252,-264,-266,-283,-227, -383,-318,-404,-396,-418,-416,-425,-412,-862,-852,-777]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. d5 a5 8. Bg5 h6 9. Bh4 Na6 10. Nd2 Nc5 11. g4 a4 $5 {[%mdl 4] Leaves trodden paths. E93: King's Indian: Classical: Petrosian System with 7...Nbd7.} 12. f3 c6 13. Qc2 Qa5 {[#] The position is equal.} 14. a3 $146 ({Predecessor:} 14. Bf2 Bd7 15. Be3 cxd5 16. cxd5 b5 17. a3 Rac8 18. O-O Nh7 19. Kg2 f5 20. h3 {0-1 (60) Szypulski,A (2390)-Terzic,S (2360) Augustow 1989}) 14... Bd7 15. O-O (15. O-O-O $14) 15... cxd5 (15... h5 $11) 16. cxd5 (16. exd5 $14 h5 17. h3) 16... b5 (16... Rfc8 $11) 17. Bf2 (17. b4 $14 axb3 18. Nxb3 Nxb3 19. Qxb3) 17... Rfc8 $11 18. Rfc1 Rab8 19. Qd1 (19. Be3 $11 {remains equal.}) 19... h5 $17 20. g5 Nh7 $1 21. Be3 {[#]} Qd8 $1 22. h4 (22. Qf1 $142) 22... f6 23. Kh1 fxg5 24. hxg5 (24. Qg1 $17) 24... Nxg5 $19 25. Qg1 { [#]} Nh3 $1 {[%cal Rh3g1]} 26. Qg3 {[#]} Nf4 $1 {[%mdl 512]} 27. Rg1 (27. Bxf4 exf4) 27... Qf6 ({Resist} 27... h4 28. Qh2 $19) 28. Bf1 $2 (28. Bxf4 exf4 29. Qh2) 28... Kh7 29. Na2 Bh6 30. Nb4 {[#]} Ne2 $1 {[%mdl 576] Discovered Attack} 31. Bxe2 {Strongly threatening Bxh6.} Bxe3 32. Rg2 (32. Rad1 $142) 32... Bxd2 33. Rag1 {Accuracy: White = 33%, Black = 76%.} 0-1 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.17"] [Round "18"] [White "Grischuk, Alexander"] [Black "Mamedyarov, Shakhriyar"] [Result "1-0"] [ECO "D27"] [WhiteElo "2765"] [BlackElo "2716"] [Annotator "TA"] [PlyCount "67"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 20,67,36,22,34,22,27,17,18,13,14,16,15,20,34,14,56,62,56,50,63,0,9,13, 14,5,14,15,6,0,0,0,0,0,0,0,-2,0,0,-10,0,0,19,0,0,0,529,173,541,532]} 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 c5 6. O-O a6 7. dxc5 Bxc5 8. Qxd8+ Kxd8 9. Ne5 Ke7 10. Be2 Rd8 11. Nd2 Kf8 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4.} 12. Nb3 Be7 13. Bd2 Nbd7 {The position is equal.} 14. Nc4 b6 {[#]} 15. Rfd1 $146 ({Predecessor:} 15. Bf3 Ra7 16. Nd4 Bb7 17. Rfd1 Bxf3 18. gxf3 Rc8 19. b3 Ne8 20. Be1 g6 21. f4 Nef6 22. Nf3 Rac7 23. Nfe5 Rb8 { 1/2-1/2 (23) Wichmann,C (2360)-Donchenko,A (2476) Dresden 2013}) 15... Bb7 16. f3 Rac8 17. e4 a5 18. Be3 Ba6 19. Rac1 a4 20. Nbd2 (20. Nd4 $14) 20... Ne5 $36 {[%mdl 2048] [#] ...Bxc4 is the strong threat. Black is more active.} 21. Bxb6 Rxd2 $1 22. Nxd2 Rxc1 23. Rxc1 Bxe2 24. Rc8+ Ne8 25. Bc5 Bxc5+ 26. Rxc5 Nd3 27. Rb5 Nd6 28. Rb8+ Ke7 29. b3 axb3 30. Nxb3 Ne5 31. Nd4 Bc4 32. a4 Nd7 $2 { [%mdl 8192] [#]} (32... Kd7 $11) 33. Nc6+ $1 $18 Kf6 34. Rd8 {Accuracy: White = 95%, Black = 91%.} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.15"] [Round "3"] [White "Carlsen, Magnus"] [Black "Mamedyarov, Shakhriyar"] [Result "1-0"] [ECO "D02"] [WhiteElo "2887"] [BlackElo "2716"] [Annotator "TA"] [PlyCount "67"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,67,2,3,0,8,0,0,-4,15,-6,0,-8,29,35,171,172,245,28,442,437,445,448,449, 446,435,162,429,443,434,414,439,438,436,423,426,419,438,219,337,201,168,34,366, 369,1043,1029,1404,631,1015,1010,1222,1184,1402,1187,5221,5221,12837,12836, 12846,12841]} 1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 Bd6 5. Nbd2 O-O 6. c3 { D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} b6 7. Ne5 c5 8. Bd3 {The position is equal.} Bb7 9. h4 $5 {[%mdl 4] Leaves trodden paths.} Nc6 {[#]} 10. Qf3 $146 ({Predecessor:} 10. Ndf3 Qc7 11. Rc1 a5 12. h5 h6 13. Rh4 Bxe5 14. dxe5 Nd7 15. g4 Ndxe5 16. Be2 Nxf3+ 17. Bxf3 {1-0 (42) Lu, R (934)-Dilnutt,C (782) Mooroolbark 2011}) 10... Rc8 11. h5 h6 (11... Ne8 $14) 12. Qg3 $18 {And now Bxh6 would win.} Ne8 (12... Kh8 $142) 13. Bxh6 $1 $40 { [%mdl 128] White has some attack.} cxd4 $2 {[%mdl 8192] [#]} (13... Nxe5 $1 $11 {and Black is okay.} 14. dxe5 Bxe5) 14. Bxg7 $1 {[%mdl 576] Clearance} Nxg7 15. h6 $1 {[%csl Gh6][%cal Rg3g7][%mdl 64] Pin} Qf6 ({Worse is} 15... Bxe5 16. Bh7+ $1 {[%mdl 512]} Kh8 17. hxg7+ Bxg7 18. Bd3+ Kg8 19. Rh8+ $1 {[%mdl 512]} Kxh8 20. Qh3+ Qh4 21. Qxh4+ Bh6 22. Qxh6+ Kg8 23. Qh7#) 16. hxg7 Qxg7 17. Bh7+ Kh8 { [#] White must now prevent ...Qxg3.} 18. Nxf7+ $1 {[%mdl 512]} Rxf7 19. Bg6+ ({ Less strong is} 19. Qxd6 dxc3 20. Bg6+ Kg8 $18) 19... Kg8 20. Bxf7+ Kxf7 21. Qxd6 dxc3 22. bxc3 Ne5 {intending ...Ba6.} 23. O-O (23. Rh5 $142 Ng6 24. Rc1) 23... d4 (23... Rg8 {was worth a try.} 24. Qc7+ Kf6 25. Qxg7+ Rxg7) 24. f3 (24. e4 $142) 24... dxe3 {[#]} 25. Ne4 ({White has to play} 25. Rae1 $1 $18 { [%cal Re1e3]} Rxc3 26. Rc1 (26. Qb8 exd2 27. Qxb7+ Kf6 $11)) 25... e2 $2 { [%mdl 8192]} (25... Bd5 $1 $14) 26. Rf2 Kg8 $2 (26... Rf8 27. Qc7+ Kg6 28. Qxg7+ Kxg7 29. Rxe2 Nf7) 27. Qxe6+ {White is clearly winning.} Kh8 28. Qh3+ ( 28. g4 $142 Bxe4 29. Qxc8+ Qg8 30. Qxg8+ Kxg8 31. fxe4) 28... Kg8 29. Rxe2 Rf8 30. Qe6+ Kh8 {[#]} 31. Ng5 $1 Nxf3+ (31... Qxg5 32. Rxe5) 32. Nxf3 Bxf3 33. Rf2 Qxc3 34. Raf1 {Accuracy: White = 74%, Black = 31%.} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.15"] [Round "1.1"] [White "Grischuk, Alexander"] [Black "Korobov, Anton"] [Result "0-1"] [ECO "D02"] [WhiteElo "2765"] [BlackElo "2667"] [Annotator "TA"] [PlyCount "70"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,70,-14,4,2,6,0,12,0,0,0,0,0,14,14,21,0,0,-22,0,0,52,18,40,17,16,42,43, 27,52,36,22,21,26,-3,0,0,13,0,0,15,14,-17,-12,-2,-12,-15,-15,-15,-15,-98,-92, -100,-96,-100,-95,-100,-84,-135,-150,-783,-770,-736,-720]} 1. Nf3 d5 2. d4 Nf6 3. Bf4 Bf5 4. e3 e6 5. Ne5 Bd6 6. Nc3 {D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Nbd7 7. Bd3 O-O $5 {[%mdl 4] An interesting side line.} 8. O-O {The position is equal.} Qe7 9. Nb5 Bxd3 10. cxd3 {[#]} Bxe5 $146 ({Predecessor:} 10... Rfc8 11. Rc1 a6 12. Nxd6 cxd6 13. Nf3 Nh5 14. Bg5 Qe8 15. Qb3 h6 16. Bh4 g5 {1/2-1/2 (38) Budzyn,R (2312)-Degerhammar,R (2451) ICCF email 2007}) 11. dxe5 Ne8 12. Qg4 Qb4 13. Nd4 c5 14. Nf3 Qb6 (14... Qxb2 $11 15. Rab1 Qxa2) 15. h4 Kh8 16. h5 h6 17. Qh4 f6 18. b3 Rc8 19. Qg3 fxe5 20. Bxe5 Nef6 21. Nh4 {[%cal Bf3h4,Bh4g6,Bg6e5][%mdl 32]} Kg8 22. Ng6 Rf7 23. Qh4 ( 23. Bxf6 {seems wilder.} Nxf6 24. Qh2 Re8 25. Ne5 Rc7 26. Rac1) 23... Nxe5 ( 23... Qb5 {keeps more tension.} 24. Rad1 Nxe5 25. Nxe5 Rfc7 26. f4 Qe8) 24. Nxe5 Rfc7 25. Rae1 Qd6 26. f4 b5 27. g4 c4 28. bxc4 bxc4 29. dxc4 (29. g5 $1 $11 hxg5 30. Qxg5) 29... dxc4 $17 30. g5 hxg5 31. Qxg5 c3 32. h6 c2 {Strongly threatening ...Qd2.} 33. Rc1 {[#]} (33. Qg6 $142) 33... Qd2 $1 {[%cal Rd2e3]} 34. Rfe1 $2 {[#]} (34. Qg3 $17) 34... Qxe1+ $1 $19 {[%mdl 576] Remove Defender, Promotion} 35. Rxe1 c1=Q {Accuracy: White = 65%, Black = 93%.} 0-1 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.17"] [Round "13"] [White "Le, Quang Liem"] [Black "Xiong, Jeffery"] [Result "1-0"] [ECO "D02"] [WhiteElo "2690"] [BlackElo "2724"] [Annotator "TA"] [PlyCount "69"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,69,26,14,3,9,4,4,2,5,-2,1,-7,10,4,10,5,20,15,19,18,17,18,22,9,29,15, 15,4,18,0,0,0,0,0,4,0,0,0,0,0,6,0,10,10,16,12,27,27,28,33,30,43,266,271,387, 383,460,459,506,509]} 1. Nf3 d5 2. d4 Nf6 3. Bf4 c5 4. e3 Nc6 5. Nbd2 Bg4 6. c3 e6 7. h3 {D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Bxf3 8. Nxf3 Bd6 9. dxc5 {The position is equal.} Bxc5 {[#]} 10. Bb5 $146 ({Predecessor:} 10. Be2 Bd6 11. Bxd6 Qxd6 12. O-O O-O 13. c4 Rfd8 14. Qa4 a6 15. Rfd1 b5 16. cxb5 axb5 17. Qxb5 {1-0 (32) Tran,M (2406)-Li,Z (2216) Bangkog 2018}) 10... O-O 11. O-O Ne7 12. Rc1 Ng6 13. Bh2 Bd6 14. Bxd6 Qxd6 15. Be2 Rfd8 16. c4 Qb6 17. Qc2 Rac8 18. Qb1 Ne7 19. Rfd1 Nf5 (19... dxc4 {looks sharper.} 20. Rxd8+ Qxd8 21. Bxc4 a6 22. Rc2 Rc7) 20. Bd3 (20. cxd5 {feels hotter.} Rxc1 21. Qxc1 Nxd5 22. Ne5 Nfe7 23. Bf3) 20... dxc4 21. Bxf5 exf5 22. Rxd8+ Rxd8 23. Rxc4 g6 24. Qc2 Ne4 25. Nd4 Nd6 26. Rc5 Qb4 27. g3 Ne4 28. Rc7 Qe1+ 29. Kg2 Nd2 30. Qc1 Qxc1 31. Rxc1 {Black must now prevent f3.} Rd7 $2 {[#] Now Black is done in.} (31... Ne4 $1 $14) 32. f3 $1 $18 b5 {[#]} (32... Rd5 {might work better.} 33. Rc2 Nb1) 33. b3 $1 g5 34. Nxf5 {White wants to mate with Rc8+.} f6 35. Nd4 {Accuracy: White = 100%, Black = 78%.} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.15"] [Round "4"] [White "Grischuk, Alexander"] [Black "Bu, Xiangzhi"] [Result "1-0"] [ECO "A20"] [WhiteElo "2765"] [BlackElo "2760"] [Annotator "TA"] [PlyCount "69"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,69,21,19,28,23,0,1,20,14,0,14,0,18,16,17,15,35,34,30,33,61,64,55,50, 85,91,89,73,66,78,69,63,66,60,74,70,115,111,88,43,50,49,53,13,13,0,44,28,41,40, 248,242,215,204,422,298]} 1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nf3 Nc6 6. O-O Be7 7. d4 e4 8. Ne5 f5 9. Nxc6 {A20: English Opening: 1...e5.} bxc6 10. Nd2 Ba6 11. Nb3 {The position is equal.} O-O 12. Bd2 {[#]} Rb8 $146 ({ Predecessor:} 12... Qe8 13. Re1 Kh8 14. e3 Rf6 15. Rc1 g5 16. Nc5 Bc8 17. f3 exf3 18. Qxf3 Rb8 {1-0 (33) Stark,L (2401)-Goudriaan,E (2360) Germany 2016}) 13. Rc1 Qd7 14. Re1 Qe6 15. Qc2 Nb4 16. Bxb4 $1 Bxb4 17. Red1 Bd6 18. e3 Bb5 19. Bf1 Kh8 {[#]} 20. d5 $1 {[%mdl 512]} Qf6 (20... cxd5 21. Nd4) 21. dxc6 Ba4 22. Rd4 Bxb3 23. axb3 Rb6 24. Rcd1 Be5 25. Rc4 Bxb2 26. Rd7 Be5 27. b4 h6 28. Qa4 a6 $1 29. Rc2 Bd6 $1 30. Rc4 Rfb8 31. Qd1 Be5 32. Qd5 Rb5 $2 {[#]} (32... Rf8 $14) 33. Rc5 $18 Rxc5 34. Qxc5 Rb6 $2 (34... Ra8 {is a better defense.} 35. Qd5 Bd6) 35. Bc4 {Accuracy: White = 86%, Black = 60%.} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.17"] [Round "13"] [White "Carlsen, Magnus"] [Black "Korobov, Anton"] [Result "1-0"] [ECO "E90"] [WhiteElo "2887"] [BlackElo "2667"] [Annotator "TA"] [PlyCount "71"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,71,46,44,71,33,26,13,30,10,44,29,28,30,28,10,17,0,84,48,71,85,72,51, 120,114,174,164,209,195,245,242,253,249,247,243,276,266,260,257,265,266,367, 343,425,425,422,414,1549,550,1572,1547,1557,1540,1367,1160,1944,1085,29996, 29989]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d6 5. e4 O-O 6. h3 a6 7. Be3 c6 8. c5 Nbd7 {E90: King's Indian: Classical: Early deviations and 6 h3.} 9. a3 b5 10. Be2 {[#]} a5 $146 {The position is equal.} ({Predecessor:} 10... Bb7 11. O-O dxc5 12. dxc5 e5 13. b4 a5 14. bxa5 Qe7 15. Qb3 Rxa5 16. a4 Rfa8 17. Rfc1 Nxc5 18. Qb4 Bf8 19. axb5 Ncd7 20. Qxe7 {1/2-1/2 (20) Alvarez Ibarra,R (2420) -Sorin,A (2425) Cuba 1993}) 11. O-O Bb7 12. Qc2 dxc5 13. dxc5 Qc7 14. Rfd1 Rfd8 15. Rac1 Nh5 (15... a4 $11) 16. Bf1 Nf8 17. a4 b4 18. Nb1 {[%cal Bc3b1,Bb1d2, Bd2c4,Bc4d6][%mdl 32]} e5 {White now steadily converts the win.} ({Black should play} 18... Rxd1 $14 19. Rxd1 Nf4) 19. Nbd2 $16 Ne6 (19... Nf4 $16) 20. Nc4 $18 Nd4 {[#]} 21. Bxd4 $1 exd4 22. e5 Ba6 23. Nd6 {Bxa6 is the strong threat.} ({And not} 23. Rxd4 Rxd4 24. Nxd4 Bxc4 $11) (23. Nxd4 Bxc4 24. Bxc4 Bxe5 $11) 23... Bxf1 24. Kxf1 Nf4 25. Qe4 ({Don't do} 25. Rxd4 $6 Ne6 $16) 25... Ne6 26. Nxd4 Nxd4 27. Rxd4 ({Don't take} 27. Qxd4 $6 Qe7 $16) 27... Qe7 28. Re1 Qe6 29. Qxc6 Qb3 30. Qd5 Qxb2 (30... Qxd5 $142 31. Rxd5 Ra7) 31. Qxf7+ Kh8 32. Qd5 {[#] White threatens Nf7+ and mate.} Rf8 33. Rd2 Qc3 34. e6 b3 35. e7 {Intending Nf7+ and mate.} b2 36. exf8=Q+ {Accuracy: White = 84%, Black = 46%.} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.15"] [Round "3"] [White "Svidler, Peter"] [Black "Le, Quang Liem"] [Result "0-1"] [ECO "A05"] [WhiteElo "2754"] [BlackElo "2690"] [Annotator "TA"] [PlyCount "72"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,72,10,24,0,7,0,0,-4,3,-109,-99,-167,-161,-247,-242,-250,-258,-256, -251,-316,-323,-339,-340,-350,-269,-275,-279,-279,-265,-339,-316,-568,-554, -570,-570,-541,-519,-558,-155,-170,-162,-156,-139,-182,-150,-157,-167,-641,0, -341,-343,-313,-330,-317,-330,-446,-256,-1078,-1027,-1345,-1275,-29997,-29998] } 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O c5 5. d3 g6 6. e4 Bg7 7. Re1 {A05: Réti Opening: 1 Nf3 Nf6.} O-O 8. e5 Ne8 {[#]} 9. Bf4 $146 {The position is equal.} ({Predecessor:} 9. c3 Nc6 10. d4 d6 11. Bf4 Rc8 12. Na3 dxe5 13. Nxe5 cxd4 14. Nb5 dxc3 15. Qxd8 Nxd8 16. Bxb7 Nxb7 {1/2-1/2 (33) Jarva,E-King,L IECG email 1995}) 9... d6 10. e6 (10. h4 $11 {remains equal.}) 10... Bxb2 11. Nbd2 (11. Ng5 $17 {keeps fighting.} Bxg2 12. exf7+ Rxf7 13. Nxf7 Kxf7 14. Kxg2) 11... Bxa1 $19 12. Qxa1 (12. exf7+ $142 Rxf7 13. Qxa1) 12... f6 $1 13. h4 Ng7 14. Bh6 Nc6 15. Ng5 Qc8 {aiming for ...Nd4.} 16. Bxg7 Kxg7 17. Ndf3 Nd8 18. h5 h6 (18... gxh5 19. Nh4 $11) 19. Ne4 {[#]} g5 $1 (19... gxh5 20. Nh4 $11) (19... Nxe6 20. hxg6 Nd8 21. Nh4 $15) 20. Bh3 {Now Nxd6! and White clings on.} Bd5 ({ Less strong is} 20... Nxe6 21. Ned2 $15) 21. Nexg5 $2 (21. Ned2) 21... hxg5 22. Nxg5 Rh8 23. Bg4 Nc6 24. c4 Nb4 $2 (24... Nd4 $19 {is more deadly.} 25. Qc1 Bb7 ) 25. cxd5 Nc2 ({Much worse is} 25... Nxd3 $6 26. Nf7 $15) 26. Qc1 {Hoping for h6+.} Nxe1 27. Nf7 {Threatening h6+.} Nxd3 28. h6+ {[#]} Kg8 $1 29. Qc2 $2 (29. Qd1 Qf8 30. Bf5) 29... Ne5 $2 ({Black should play} 29... c4 $19 30. Bf5 Qc5) 30. Nxe5 $4 {[%mdl 8192]} (30. f4 $1 $11 {and White stays safe.} Qf8 31. fxe5 Rxh6 32. exd6 exd6 33. Qe4) 30... Rxh6 31. Nf7 Qf8 32. Bf5 Qg7 ({Don't play} 32... Rh5 33. Bg6 $19) 33. Qa4 Rf8 (33... Rh5 $142 34. Bg4 b5) 34. Qd7 $2 (34. Nxh6+ Qxh6 35. Qxa7) 34... Rh5 35. Be4 f5 {( -> ...Qa1+)} 36. Bf3 Qa1+ { [%mdl 64] Double Attack. White got outplayed after the opening. Accuracy: White = 51%, Black = 93%.} 0-1 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.15"] [Round "4"] [White "Mamedyarov, Shakhriyar"] [Black "Svidler, Peter"] [Result "1-0"] [ECO "E60"] [WhiteElo "2716"] [BlackElo "2754"] [Annotator "TA"] [PlyCount "71"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,71,27,19,6,9,2,12,10,8,8,20,10,8,10,11,8,66,73,79,45,85,66,94,69,185, 197,217,206,211,204,202,196,189,195,172,152,152,152,609,591,579,610,596,570, 744,718,29978,29979,5689,0,826,826,29988,117,117,117,209,197,796,783,1387,1038, 3495,2957]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. e3 O-O 5. Be2 c5 6. dxc5 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3.} Na6 { [%cal Bb8a6,Ba6c5,Bc5e4][%mdl 32]} 7. O-O Nxc5 8. b4 {The position is equal.} Nce4 9. Bb2 a5 10. a3 axb4 11. axb4 Rxa1 12. Bxa1 {[#]} d5 $146 (12... Qb6 $11) ({Predecessor:} 12... d6 13. Bd3 b6 14. Nd4 Bd7 15. Qc2 Qa8 16. Nc3 Nxc3 17. Bxc3 Rc8 18. Ra1 Qb7 {1-0 (60) Zojer,S (2127)-Neumeier,K (2288) Austria 2017}) 13. c5 $1 $14 Bg4 14. Nbd2 e6 15. h3 Bxf3 16. Bxf3 (16. Nxf3 {seems wilder.} b6 17. c6 Qc7 18. Qc2 Nd6 19. b5) 16... Qa8 {[#]} ({Black should play} 16... Nxd2 $14 17. Qxd2 Nd7) 17. Bxe4 $1 $18 dxe4 18. Bxf6 Bxf6 19. Nxe4 Be5 20. Qc2 Rd8 21. f4 Bg7 22. Rd1 Rxd1+ 23. Qxd1 {Threatens to win with Qd7.} Qa3 $2 (23... b6 $16 24. Qd3 bxc5) 24. Qd8+ Bf8 25. Nf6+ Kg7 26. Qd4 Kh8 27. Kh2 {Strongly threatening Qd8!} h6 {[#]} 28. Qd8 $1 {[%cal Rd8f8]} Kg7 29. Qd4 (29. Nd7 $142 Be7 30. Qxe7) 29... Kh8 $1 30. h4 {Qd8! is the strong threat.} Qc1 31. Nd7+ $2 (31. Qd8 {mates} Kg7 32. Nd7 Bxc5 33. bxc5 Kh7 34. Nf6+ Kg7 35. Nd7 Qa1 36. Qf8+ Kh7 37. Qxf7+ {[%mdl 64] Double Attack} Kh8 38. Ne5) 31... Bg7 $16 {[#]} 32. Ne5 $1 {[%cal Re5f7]} Kh7 (32... Qe1 $16) 33. Qe4 $18 {Hoping for Nf3.} Qe1 $2 (33... Bxe5 34. Qxe5 (34. fxe5 Kg7 $14) 34... Qe1) 34. Nf3 {White is clearly winning.} Qf2 35. b5 f5 36. Qxe6 {Accuracy: White = 84%, Black = 40%.} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.15"] [Round "5"] [White "Le, Quang Liem"] [Black "Mamedyarov, Shakhriyar"] [Result "0-1"] [ECO "A28"] [WhiteElo "2690"] [BlackElo "2716"] [Annotator "TA"] [PlyCount "74"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,74,14,-5,0,-22,0,-8,11,6,3,0,0,0,8,0,0,-11,0,-3,-5,-11,0,-14,-10,-4, 0,11,85,12,18,0,0,0,0,0,0,-11,0,0,0,0,2,1,1,2,5,-102,-92,-67,0,0,0,0,70,70,71, 0,0,-342,12,0,16,-29986,-29987,-29998,-29999]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 Bxc3 6. bxc3 d6 {A28: English Opening: Four Knights Variation. } 7. d3 O-O 8. Be2 h6 {The position is equal.} 9. O-O {[#]} a6 $5 $146 { [%mdl 8] New and interesting.} ({Predecessor:} 9... b6 10. e4 Nh7 11. Ne1 f5 12. exf5 Bxf5 13. f4 Qd7 14. Nf3 Rae8 15. fxe5 dxe5 {1/2-1/2 (31) Ganguly,S (2615)-Wojtaszek,R (2749) Germany 2019}) 10. Rb1 Rb8 11. a4 a5 12. e4 b6 13. Ne1 Nh7 14. f4 exf4 15. Bxf4 f5 16. exf5 Bxf5 17. Qd2 Ne5 18. Nc2 Qh4 {[#]} ( 18... Bg6 $11 {keeps the balance.}) 19. Ne3 ({White should try} 19. c5 $1 $16 { [%mdl 512]}) 19... Be6 $11 (19... Bxd3 $2 20. g3 $18) 20. Bg3 Qg5 21. d4 Ng4 22. Bxg4 Bxg4 23. h4 Qh5 24. Nd5 Rxf1+ 25. Rxf1 {Threatening Re1.} Be6 26. Nxc7 Bxc4 27. Re1 $36 {[%mdl 2048] White fights for an advantage.} Rd8 28. Qb2 (28. d5 $11 {remains equal.}) 28... Qg4 $17 29. Re3 Nf6 ({Black should play} 29... Rf8 $15 30. Kh2 (30. Qxb6 $2 Rf1+ 31. Kh2 Nf6 $19) 30... Qg6) 30. Qxb6 $11 { Hoping for Nd5!} Qd1+ 31. Re1 Qd3 (31... Qc2 $11) 32. Nd5 $1 $14 Rf8 33. Ne7+ ( 33. Nxf6+ $16 Rxf6 34. Qb8+ (34. Bxd6 Kh7 $15) 34... Kh7 35. Qb1 (35. Bxd6 $2 Rg6 $17)) 33... Kh7 $11 34. Qxd6 $2 {[%mdl 8192]} (34. Qb1 $11 {and White has nothing to worry.}) 34... Qxc3 $2 (34... Ng4 $19 {( -> ...Rf1+)} 35. Qg6+ Qxg6 36. Nxg6 Kxg6) 35. Qe5 {Qf5+ is the strong threat.} Qd3 {And now ...Ng4 would win.} 36. h5 $2 {[%mdl 8192] [#]} (36. Qe3 $11) 36... Ng4 $1 37. Qd6 Rf1+ { [%mdl 64] Back Rank. Accuracy: White = 71%, Black = 80%.} 0-1 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.17"] [Round "18"] [White "Anton Guijarro, David"] [Black "Korobov, Anton"] [Result "1-0"] [ECO "D15"] [WhiteElo "2590"] [BlackElo "2667"] [Annotator "TA"] [PlyCount "75"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,75,20,35,22,30,32,29,15,28,23,39,38,37,33,39,53,43,45,45,43,39,32,36, 31,30,28,64,21,61,61,72,15,100,100,113,114,117,0,0,0,0,0,0,0,0,-8,16,21,72,66, 77,82,189,188,383,370,494,402,408,395,469,440,486,478,547,442,804,796]} 1. Nf3 Nf6 2. c4 c6 3. Nc3 d5 4. e3 a6 5. d4 Bf5 6. Bd3 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4.} Bxd3 7. Qxd3 e6 8. O-O {White has an edge.} Bb4 9. a3 Ba5 10. b4 Bc7 11. e4 dxe4 12. Nxe4 Nxe4 13. Qxe4 {[#]} Nd7 $146 ({ Predecessor:} 13... O-O 14. Bg5 Qd6 15. Rfe1 Nd7 16. Rad1 Rac8 17. g3 b5 18. Ne5 f6 19. c5 Qe7 20. Nxc6 {1-0 (45) Savina,A (2390)-Aranaz Murillo,A (2262) Linares 2013}) 14. Bg5 Nf6 15. Bxf6 Qxf6 16. d5 cxd5 17. cxd5 e5 18. Rae1 { [%cal Rf3e5]} O-O 19. Nxe5 Rad8 20. f4 (20. Nf3 $16) 20... Kh8 (20... Qd6 $11 { keeps the balance.}) 21. g3 $16 Rfe8 22. Kg2 Kg8 23. Re3 ({Better is} 23. Qd3 $16) 23... Qd6 $1 $11 {White must now prevent ...f6.} 24. Qf3 Qxd5 25. Qxd5 Rxd5 26. Rfe1 Rd2+ 27. Kh3 Re6 28. Nf3 $36 {[%mdl 2048] White is pushing.} Rdd6 (28... Rxe3 $11 29. Rxe3 Rd8) 29. Ng5 $16 Rxe3 30. Rxe3 $14 {[%cal Re3e8][%mdl 4096] Endgame KRB-KRN} Rd8 (30... Rh6+ $16 31. Kg4 Kf8) 31. Re7 $1 $18 { [%csl Bc7,Bf7][%mdl 64] [#] Double Attack} Bd6 $2 (31... Rc8) 32. Rxb7 Rf8 33. Rb6 Be7 34. Rxa6 h6 35. Nf3 {White is clearly winning.} Rd8 36. Ra7 Bf6 37. Ne5 g5 (37... Bxe5 $142 38. fxe5 Rb8) 38. Nxf7 {[%mdl 64] Double Attack. Accuracy: White = 85%, Black = 50%.} 1-0 [Event "FIDE Online Steinitz Memorial Open"] [Site "Internet"] [Date "2020.05.16"] [Round "7"] [White "Dubov, Daniil"] [Black "Xiong, Jeffery"] [Result "1-0"] [ECO "A30"] [WhiteElo "2720"] [BlackElo "2724"] [Annotator "TA"] [PlyCount "77"] [EventDate "2020.05.15"] [EventType "tourn"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,77,20,5,25,27,30,-14,0,0,0,-9,-20,-72,-62,-72,-59,-78,-84,-82,-20, -24,177,169,194,178,191,193,198,204,211,194,204,190,189,106,140,106,262,254, 344,265,389,387,495,480,477,436,529,602,585,606,591,585,631,535,881,882,1009, 983,2101,929,29981,29980,29979,29980]} 1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. O-O g6 6. b3 Bg7 7. Bb2 O-O 8. e3 Na6 {[%cal Bb8a6,Ba6b4,Bb4d3][%mdl 32] A30: Symmetrical English: Double Fianchetto and Hedgehog.} 9. Qe2 d5 10. cxd5 Nb4 {[#] The position is equal.} 11. Na3 $146 ({Predecessor:} 11. d3 Nbxd5 12. Rd1 Qc7 13. Na3 Rfd8 14. Rac1 Ba6 15. Be5 Qd7 16. Ne1 Rac8 17. Qb2 {0-1 (29) Mulenko,A (2114)-Shmarina,D (1865) Kostroma 2010}) 11... Qxd5 12. Nc4 Qd3 13. Qxd3 (13. Qd1 $11 {keeps the balance.} Qf5 14. d4) 13... Nxd3 $17 14. Bc3 Rfd8 15. a4 Rab8 16. Nfe5 Bxg2 ({Black should play} 16... Ne4 $17 17. Nxd3 Nxc3) 17. Kxg2 $11 {White wants to play Nc6.} Ne4 $2 (17... Nxe5 $11 {and Black has nothing to worry.} 18. Bxe5 Rbc8) 18. Nc6 $1 $18 {[%csl Ba7,Bb8,Bd8,Be7][%mdl 64] [#] Double Attack} Bxc3 19. dxc3 Nxc3 20. Nxe7+ ({Much less strong is} 20. Nxb8 $6 Rxb8 21. Na3 a6 $16) ({Not} 20. Nxd8 Rxd8 21. f4 f6 $14) 20... Kg7 { And now ...Rd7 would win.} 21. Nc6 $1 {[%csl Ba7,Bb8,Bd8][%mdl 64] Double Attack} Rbc8 22. Nxd8 Rxd8 23. g4 f5 24. h3 (24. gxf5 $18 gxf5 25. f4) 24... Kf6 25. f4 Ke6 $2 (25... Nb4 $16) 26. Kf3 Rf8 27. g5 Rh8 (27... Nb4 $142 28. h4 Rd8) 28. h4 h6 {[#]} 29. Rad1 $1 {[%mdl 512]} Nxd1 30. Rxd1 {[%mdl 4096] Endgame KRN-KRN} Nb4 31. Rd6+ Ke7 32. Rxg6 hxg5 33. hxg5 Nc2 34. Nd6 Rh3+ 35. Kg2 Rh5 36. Nxf5+ Kd7 37. Kf3 (37. Rh6 $142 Nb4 38. Rxh5) 37... Na1 38. Rd6+ Kc7 39. Rh6 {Accuracy: White = 66%, Black = 32%.} 1-0