[Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "11.1"] [White "Bjerre, Jonas Buhl"] [Black "Keymer, Vincent"] [Result "0-1"] [ECO "E04"] [WhiteElo "2542"] [BlackElo "2591"] [Annotator "TA"] [PlyCount "108"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,107,0,0,0,-12,-11,-25,-14,-18,-19,-20,-12,0,-14,-25,-21,-30,-39,-41, -10,-34,-29,-34,0,0,0,0,0,0,0,0,4,-114,-105,-117,-127,-131,-133,-147,-133,-212, -210,-277,-271,-320,-311,-330,-297,-347,-354,-348,-297,-308,-280,-335,-302, -829,-587,-566,-557,-538,-506,-680,-675,-1714,-1038,-1008,-987,-929,-916,-5725, -5640,-29981,-29982,-29986,-29987,-29986,-5728,-4806,-4133,-29987,-7981,-29985, -1807,-29991,-29989,-29989,-29989,-29989,-29990,-29990,-29991,-29996,-29997, -29997,-29998,-29998,-29999,-29999]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Nbd2 dxc4 6. Bg2 b5 {E04: Open Catalan: 5 Nf3.} 7. O-O O-O 8. a4 c6 {Black has an edge.} 9. Ne1 Nd5 10. Nc2 Be7 11. e4 Nb6 12. a5 N6d7 13. e5 Bb7 14. Ne4 {[#] } Qc8 $146 ({Predecessor:} 14... Na6 15. Qg4 Kh8 16. Qh5 f6 17. exf6 gxf6 18. Bh6 Rg8 19. Rfe1 Qe8 20. Qh3 Nc7 {1-0 (44) Nguyen,V (2463)-Srija,S (2225) New Delhi 2020}) 15. Qh5 c5 16. Bg5 Bxg5 (16... Bxe4 {is interesting.} 17. Bxe4 g6 18. Qe2 Bxg5 19. Bxa8 Na6) 17. Nd6 ({Don't play} 17. Nxg5 h6 $17) (17. Qxg5 Bxe4 18. Bxe4 Nc6 $17) 17... Bxg2 18. Nxc8 Bxf1 19. Kxf1 {[#] Hoping for Qf3.} Rxc8 20. Qxg5 Nc6 21. dxc5 (21. Rd1 $11 {remains equal.}) 21... Nxc5 $17 { Black keeps a firm grip on the game.} 22. Qe3 Nd3 23. b3 Ndxe5 24. bxc4 Nxc4 25. Qg5 (25. Qe1 $17) 25... a6 $19 ({Weaker is} 25... N6xa5 26. Qxb5 Nb3 27. Ra2 $15) 26. Ne3 h6 ({Much less strong is} 26... N6xa5 27. Ng4 $17) 27. Qf4 N6xa5 28. Ng4 Rd8 29. Qc7 Rac8 30. Qe7 Nc6 31. Qb7 Nb4 32. Kg2 h5 33. Rb1 $2 ( 33. Ne3) 33... Nd5 34. Ne3 Ncxe3+ 35. fxe3 Nxe3+ 36. Kf3 Rc3 {[#] ...Rd2 is the strong threat.} 37. Qxa6 Nf5+ 38. Kg2 Rd2+ 39. Kg1 Nd4 40. Qa8+ Kh7 41. Qe4+ f5 42. Qb7 Nf3+ 43. Kf1 Nxh2+ (43... Rxh2 $142 44. Rd1 b4 45. Qa8 b3 46. g4 hxg4 47. Qe8 b2 48. Qb8 Rc1 49. Qxh2+ Nxh2+ 50. Ke2 b1=Q 51. Rxc1 Qxc1 52. Kd3 Nf3 53. Ke2 Qd2+ 54. Kf1 Qe1+ 55. Kg2 Qg1#) 44. Ke1 Nf3+ 45. Kf1 Ng5 (45... Re3 $142 46. Ra1 Nh2+ {[%mdl 64] Discovered Attack} 47. Kg1 Rxg3+ 48. Kh1 Nf3 49. Qxf3 Rxf3 50. Re1 b4 51. Kg1 b3 52. Kh1 b2 53. Rd1 Rxd1+ 54. Kg2 Rfd3 55. Kh2 R1d2+ 56. Kh1 b1=Q#) 46. Ke1 Ne4 (46... Rh2 $142 47. Kf1 Ne4 48. Qb6 Rcc2 49. Qg1 Nd2+ {[%mdl 64] Double Attack} 50. Ke1 Nxb1 51. Qxh2 Rxh2 52. Kf1 Nd2+ 53. Ke1 b4 54. g4 b3 55. Kd1 b2 56. Kc2 b1=Q+ 57. Kc3 e5 58. gxh5 Qb3#) 47. Qf7 Re3+ {Black mates.} 48. Kf1 Nxg3+ 49. Kg1 Ree2 {[%csl Gd2][%CAl Re2g2]} 50. Qb7 Ne4 51. Qxb5 Rg2+ 52. Kf1 Rdf2+ 53. Ke1 Rg1+ 54. Qf1 Rgxf1# {Weighted Error Value: White=0.68/Black=0.26} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "11.2"] [White "Lei, Tingjie"] [Black "Praggnanandhaa R"] [Result "0-1"] [ECO "B69"] [WhiteElo "2505"] [BlackElo "2608"] [Annotator "Shahid"] [PlyCount "70"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 24,70,58,38,26,31,45,41,56,56,61,59,52,50,54,68,47,60,61,0,0,0,0,-25,90, -318,-325,-299,-289,-621,-623,-673,-673,-673,-672,-626,-609,-636,-555,-522, -522,-771,-564,-930,-898,-879,-868,-855,-840]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Be7 9. f4 Bd7 10. Nf3 b5 11. Bxf6 gxf6 12. Kb1 Qb6 13. Bd3 O-O-O {B69: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 Bd7 9 f4 Be7 10 Nf3 b5 11 Bxf6.} 14. Rhe1 Kb7 15. g4 {[#]} Rhg8 $146 { White is slightly better.} ({Predecessor:} 15... Rc8 16. Nd5 exd5 17. exd5 Ne5 18. fxe5 fxe5 19. Bf5 Bxf5 20. gxf5 Rc4 21. Qg2 f6 {1-0 (40) Hector,J (2493) -Haubro,M (2374) Gothenburg 2019}) 16. g5 fxg5 {[#] ...g4 is the strong threat. } 17. Nd5 $1 {[%CAl Rd5b6]} exd5 18. exd5 Bf6 {Strongly threatening ...Nd4.} 19. dxc6+ Bxc6 20. Nxg5 {[%mdl 64] Double Attack} Rg7 21. Nxh7 ({Better is} 21. Ne4 $14 Bh4 22. Ng3) 21... Bh4 $1 $11 {[%CAl Rh4e1]} 22. Re3 f6 23. Rh3 {[#]} Rg2 24. Qc3 $4 {[%mdl 8192] [#] White does not recover from this.} (24. Qc1 $1 $16 Bf2 25. Nxf6) 24... Rg1 $1 $19 {[%CAl Rg1d1]} 25. Be2 {[#]} (25. Qd2 Qf2 26. Kc1 Rxd1+ 27. Qxd1 (27. Kxd1 Qg1+ 28. Ke2 Re8+) 27... Re8) 25... Re8 $1 { [%CAl Re8e2]} 26. Qd3 (26. Bh5 Ree1 27. Rhd3) 26... Qf2 $1 {[%csl Be2,Bf4] Black is clearly winning.} 27. Rxg1 Qxg1+ 28. Bd1 {[#]} Re1 $1 29. Kc1 Qg4 30. b3 {[#]} Rxd1+ $1 {[%mdl 576] Deflection} 31. Qxd1 Qxh3 32. Qxd6 Qd7 33. Qxd7+ Bxd7 34. Kd2 Bf5 35. Nf8 Kc7 {Weighted Error Value: White=0.88/Black=0.21} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "11.3"] [White "Abdumalik, Zhansaya"] [Black "Mendonca, Leon Luke"] [Result "0-1"] [ECO "B91"] [WhiteElo "2472"] [BlackElo "2549"] [Annotator "TA"] [PlyCount "70"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,70,21,22,0,7,-51,-18,-50,-39,-79,-75,-79,-69,-93,-102,-102,-58,-102, -69,-65,-58,-59,-63,-89,-97,-143,-110,-100,-78,-114,-101,-135,-139,-139,-135, -221,-211,-233,-257,-286,-275,-452,-434,-531,-523,-628,-588,-602,-598,-588, -532,-5314,-5306,-2584,-2112]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. h3 Nc6 10. Nxc6 {B91: Sicilian Najdorf: 6 g3.} bxc6 11. e5 (11. Be3 $11) 11... dxe5 $15 12. Qxd8 {The position is equal.} Rxd8 13. Bxc6 $2 (13. Na4) 13... Bxh3 14. Re1 {[#]} (14. Bxa8 Bxf1 15. Kxf1 Rxa8 16. a4) 14... Rab8 15. Rxe5 Ng4 16. Re1 {[#]} Ne5 $146 (16... e6 {looks sharper.} 17. a4 Ne5 18. Bg2 Bxg2 19. Kxg2 Nc4) ({Predecessor:} 16... Bd4 17. Nd1 Rbc8 18. Bf4 Ne5 19. Kh1 Nf3 20. Rxe7 Bc5 {0-1 (20) Auvinen,E (1956) -Bhopal,R (2077) Dresden 2013}) 17. Be4 Nc4 (17... Bg4 18. Bg5 (18. Kg2 f5) 18... Rd7) 18. Nd5 Bxb2 19. Nxe7+ Kg7 20. Bxb2+ Rxb2 21. Bd3 Na3 22. Rac1 Rd6 23. Be4 Be6 24. Red1 Rxd1+ 25. Rxd1 Rxa2 26. c3 (26. Nd5 $17 {might work better.}) 26... a5 {[%CAl Ba6a5,Ba5a4,Ba4a3,Ba3a2][%mdl 32]} 27. Nc6 a4 28. Nb4 Rb2 29. Nd3 $2 (29. Bd3 {only move.}) 29... Rb1 $19 {Black is clearly winning.} 30. Nc1 Ra1 31. Bc6 Nc4 32. Kf1 a3 33. Ke2 a2 34. Nb3 Rxd1 35. Kxd1 {[#]} Ne3+ $1 {[%mdl 576] Discovered Attack. Weighted Error Value: White=0.67/Black=0.07} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "11.4"] [White "Shuvalova, Polina"] [Black "Zhu, Jiner"] [Result "1-0"] [ECO "B46"] [WhiteElo "2489"] [BlackElo "2462"] [Annotator "TA"] [PlyCount "77"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,77,18,27,21,14,12,18,0,29,19,25,-14,60,56,56,40,40,54,46,42,73,63, 133,128,134,117,149,144,340,294,294,294,303,293,302,295,702,293,288,251,249, 229,224,121,234,193,190,160,317,0,177,143,253,213,483,464,519,528,778,527, 29996,29997]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 e6 7. f4 Nc6 8. Nxc6 bxc6 9. O-O Be7 10. Qf3 {B46: Sicilian: Taimanov: 5 Nc3 a6.} O-O 11. Kh1 {[#]} d5 $146 ({Predecessor:} 11... e5 12. f5 Bb7 13. g4 d5 14. g5 Nxe4 15. Nxe4 dxe4 16. Bxe4 Bxg5 17. Bxg5 Qxg5 {1/2-1/2 (36) Viageiro Mateus,A (2356)-Yanovsky,V (2146) Chess.com INT 2016}) 12. Bd2 {The position is equal.} Rb8 13. b3 Bb7 14. Rae1 dxe4 (14... c5 $11 15. Re2 h6) 15. Nxe4 $14 c5 { Hoping for ...Nxe4.} 16. Nxf6+ Bxf6 17. Qh5 $40 {[%csl Gd3][%CAl Rh5h7][%mdl 192] Double Attack. White mounts an attack.} g6 18. Qxc5 Bd4 19. Qg5 Qd7 (19... Bf6 $14 20. Qg4 Qd5) 20. f5 $16 exf5 21. Bxf5 Qb5 22. Bd3 Qb6 (22... Qxg5 $16 23. Bxg5 Bc3) 23. Bc4 {And now Re7 would win.} Rbc8 24. Re7 {[%CAl Rc4f7]} Rxc4 25. bxc4 {aiming for Qf4.} Bc8 26. Be3 Be6 {[#]} (26... Bxe3 27. Qxe3 Qd8) 27. c5 (27. Rxe6 $142 $1 Qxe6 28. Bxd4) 27... Qb5 28. Rg1 ({Not} 28. Bxd4 Qxf1+ 29. Bg1 Bxa2 $16) 28... Bg7 29. Rc7 Qc4 30. Bf4 (30. c6 $18) 30... Qc3 (30... h6 $16 {was called for.} 31. Qg3 Bd5) 31. Bd6 Re8 32. Re7 Rc8 {[#]} (32... Rxe7 $16 {was necessary.} 33. Bxe7 (33. Qxe7 h6 $16) 33... h6) 33. Rc7 (33. Rxe6 $142 $1 fxe6 34. Qe7) 33... Re8 $18 34. Qf4 Bd4 (34... Bd5 $16) 35. Rf1 { [%CAl Rc7f7]} Bf5 $2 (35... Bd5 36. Re7 (36. Rxf7 Re2 $11 {[%mdl 64] Double Attack}) 36... Rxe7 37. Bxe7 Be5) 36. Re7 Rxe7 37. Bxe7 {White threatens Qb8+ and mate.} Be5 38. Qf3 Qxc2 39. Qa8+ {[%mdl 64] Double Attack. Weighted Error Value: White=0.55/Black=0.57} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "11.5"] [White "Mammadzada, Gunay"] [Black "Nihal Sarin"] [Result "0-1"] [ECO "B15"] [WhiteElo "2443"] [BlackElo "2620"] [Annotator "TA"] [PlyCount "110"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 23,110,70,72,70,70,67,72,0,40,42,62,48,62,-1,45,24,61,19,12,-73,-70,-81, -2,-6,-5,-9,-8,-64,-64,-64,-64,-64,-64,-64,-64,-62,-34,-42,-35,-124,-124,-161, -161,-161,-162,-229,-170,-193,-164,-174,-150,-154,-156,-141,-125,-242,-223, -396,-375,-412,-412,-411,-386,-1169,-1140,-2464,-2395,-5181,-6957,-4802,-3328, -29980,-29979,-29981,-29982,-29982,-29983,-29988,-29983,-29982,-29976,-29984, -29975,-29984,-29985,-29985,-29986,-29986,-29984]} 1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. f4 d5 5. e5 h5 6. Nf3 Bg4 7. Be3 Nh6 8. h3 Nf5 9. Bf2 Bxf3 10. Qxf3 h4 11. Bd3 e6 12. O-O Nd7 13. Kh2 {B15: Caro-Kann: 3 Nc3:3...g6 and 3...dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6.} Bf8 14. Ne2 Be7 {[#]} 15. Qg4 $146 (15. b3 $16) ({ Predecessor:} 15. b3 Qc7 16. c4 b6 17. Rac1 Ba3 18. Rc2 Qb7 19. Nc3 a6 20. Nb1 Be7 21. Rfc1 {1-0 (36) Nytra,O (1956)-Tennstedt,A (2126) Marianske Lazne 2019}) 15... Kf8 (15... Nh6 $5 {[%CAl Rh6g4]} 16. Qf3 Kf8 $14) 16. b3 a5 17. a4 Qb6 18. Ng1 ({White should play} 18. Qf3 $14) 18... Rc8 ({Don't go for} 18... Nxd4 $2 19. c3 $18) 19. Bxf5 exf5 20. Qe2 Kg7 21. e6 {[#]} (21. Qd2 $11 {keeps the balance.}) 21... Nf6 $1 $17 22. exf7 {[#]} Ne4 ({Better is} 22... Qc7 $1 $17 23. Nf3 Qxf4+ 24. Kg1 Ne4) 23. Nf3 $11 Kxf7 24. Qe1 Qc7 25. Bxh4 $2 (25. Ne5+ Kg7) 25... Qxf4+ $15 26. Bg3 Qxg3+ 27. Qxg3 Nxg3 28. Kxg3 Kf6 29. Rae1 Rce8 30. Kf2 Bb4 31. Re3 $2 {Black keeps a firm grip on the game.} (31. Re5 $15 Bd6 ( 31... Rxe5 32. dxe5+ Ke6) 32. Rxe8) 31... Re4 $17 32. Rd1 Rhe8 33. Rxe4 dxe4 $19 {[%mdl 4096] Endgame KRB-KRN} ({Much less strong is} 33... fxe4 34. Nh2 $15 ) 34. Ne5 (34. Ng1 {was worth a try.}) 34... f4 35. c4 Kf5 {...c5 is the strong threat.} 36. Ke2 Rd8 {White must now prevent ...c5.} 37. Nf7 Rd7 38. Ne5 Rh7 39. c5 {[#]} (39. Ng4 $17) 39... Bxc5 $1 {[%mdl 576] Deflection} 40. dxc5 $2 (40. Nc4 Bb4 41. d5) 40... Kxe5 {KR-KR} 41. Rd8 f3+ 42. gxf3 exf3+ 43. Kf2 $2 (43. Kxf3 Rxh3+ 44. Kf2) 43... Rxh3 44. Rd7 Ke4 45. Re7+ Kf4 46. Rf7+ Kg4 47. Rxb7 Rh2+ {Black mates.} 48. Ke3 Re2+ 49. Kd3 Re5 50. Rg7 g5 51. Rf7 Kg3 52. Kd4 Rd5+ 53. Kc4 f2 54. b4 axb4 55. a5 Kg2 {Weighted Error Value: White=0. 58/Black=0.09} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "11.6"] [White "Saduakassova, Dinara"] [Black "Yip, Carissa"] [Result "1-0"] [ECO "B06"] [WhiteElo "2500"] [BlackElo "2430"] [Annotator "RC"] [PlyCount "53"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] 1. d4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 2. e4 {[%emt 0:00:07]} Bg7 {[%emt 0: 00:02]} 3. Nc3 {[%emt 0:00:01]} d6 {[%emt 0:00:05]} 4. Be3 {[%emt 0:00:02]} c6 {[%emt 0:00:02]} 5. Qd2 {[%emt 0:00:02]} Nd7 {[%emt 0:00:03]} 6. Nf3 {[%emt 0: 00:04]} b5 {[%emt 0:00:05]} 7. Bd3 {[%emt 0:00:17]} Nb6 {[%emt 0:00:07]} 8. h4 {[%emt 0:01:21]} h6 {[%emt 0:00:03]} 9. e5 {[%emt 0:00:37]} b4 {[%emt 0:00:48]} 10. Ne4 {[%emt 0:00:15]} Nd5 {[%emt 0:00:02]} 11. exd6 {[%emt 0:00:30]} exd6 { [%emt 0:00:03]} 12. Bf4 {[%emt 0:00:15]} Nxf4 {[%emt 0:00:39]} 13. Qxf4 { [%emt 0:00:02]} Bf8 {[%emt 0:00:04]} 14. O-O {[%emt 0:01:35]} Be6 {[%emt 0:00: 15]} 15. Rfe1 {[%emt 0:00:36]} Qd7 {[%emt 0:00:24]} 16. Nf6+ {[%emt 0:01:53]} Nxf6 {[%emt 0:00:02]} 17. Qxf6 {[%emt 0:00:01]} Rg8 {[%emt 0:00:01]} 18. d5 { [%emt 0:00:25]} cxd5 {[%emt 0:00:10]} 19. Bb5 {[%emt 0:00:15]} Qxb5 {[%emt 0: 00:10]} 20. Rxe6+ {[%emt 0:00:02]} fxe6 {[%emt 0:00:07]} 21. Qxe6+ {[%emt 0:00: 01]} Kd8 {[%emt 0:00:01]} 22. Qxg8 {[%emt 0:00:00]} Kc7 {[%emt 0:00:06]} 23. Nd4 {[%emt 0:00:27]} Qe8 {[%emt 0:00:38]} 24. Qxd5 {[%emt 0:00:03]} Rb8 { [%emt 0:00:23]} 25. Ne6+ {[%emt 0:00:11]} Kd7 {[%emt 0:00:09]} 26. Re1 { [%emt 0:00:09]} Qc8 {[%emt 0:00:12]} 27. Nd4 {[%emt 0:00:30]} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "11.7"] [White "Yoo, Christopher Woojin"] [Black "Abdusattorov, Nodirbek"] [Result "1-0"] [ECO "B14"] [WhiteElo "2457"] [BlackElo "2634"] [Annotator "TA"] [PlyCount "127"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 23,127,9,4,4,15,19,31,13,12,4,21,5,39,35,27,34,54,46,63,64,29,29,66,67, 79,77,71,57,66,69,106,106,108,66,112,92,81,49,54,32,82,81,134,125,123,147,133, 129,127,123,148,147,178,188,162,114,116,118,111,113,132,119,197,152,139,142, 399,372,378,373,353,263,253,255,245,249,353,350,623,622,597,572,1625,1559, 29962,29963,29966,29967,29968,29969,29971,29972,29972,29973,29972,29972,29972, 29973,29978,29979,29980,29981,29977,29981,29989,29990]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. cxd5 Nxd5 8. Bd2 Nc6 9. Bd3 O-O 10. O-O Be7 11. Nxd5 exd5 12. h3 Bf6 13. Bc3 {B14: Caro-Kann: Panov-Botvinnik Attack with 5...e6 and 5...g6.} Qb6 14. Qd2 {[#]} Bd7 $146 ({Predecessor:} 14... Re8 15. Rfe1 Bd7 16. Bc2 h6 17. Qd3 g6 18. Bb3 Bf5 19. Qd2 Be4 20. Ne5 Nxe5 21. dxe5 Bxe5 22. Bxe5 Rxe5 23. Qxh6 {1-0 (52) Smyslov,V (2570)-Magem Badals,J (2470) Barcelona 1990}) 15. Qf4 {White is slightly better.} Rfe8 16. a3 Ne7 17. Ne5 Bb5 (17... Bxe5 {is interesting.} 18. dxe5 Ng6 19. Qd2 Nxe5 20. Bc2 Bc6) 18. Bxb5 Qxb5 19. Ng4 Qc6 20. Rac1 Ng6 21. Qf5 Qe6 22. Qf3 Bg5 23. Rce1 Qd7 24. Ne5 Nxe5 25. dxe5 Rad8 26. Rd1 Qc6 27. Rd3 Rd7 28. Qg4 Bh6 29. Rfd1 g6 30. Qf3 {[%CAl Rd3d5]} Red8 31. Bb4 Bg7 32. Bd6 $36 {[%mdl 2048] Keeping Black busy.} f6 ({Better is} 32... b6) 33. Rc3 $16 (33. Rxd5 $6 fxe5 34. Qb3 Kh8 $11) (33. exf6 $6 Bxf6 34. Qxf6 Rxd6 $11) (33. Qxd5+ $2 Qxd5 34. Rxd5 fxe5 $19) 33... Qb6 34. Qxd5+ Kh8 35. Rb3 Qa6 {and if ...fxe5 works, Black does fine.} 36. f4 fxe5 37. fxe5 Bf8 38. Rbd3 Qb6+ 39. Qd4 Qxd4+ 40. Rxd4 Kg8 41. Kf2 Kf7 42. Ke3 {Hoping for Rf1+.} Bg7 {[#]} (42... Ke6 $16 {is a better defense.}) 43. Bc5 $1 $18 Rxd4 44. Rxd4 $16 {[%mdl 4096] Endgame KRB-KRB } (44. Bxd4 $6 Ke6 $11) 44... Rc8 {[%mdl 8192] This costs Black the game.} ( 44... Rxd4 $16 45. Bxd4 (45. Kxd4 Ke6 $14) 45... Ke6) 45. Rd7+ $18 {[%mdl 64] Double Attack} Ke6 46. Re7+ (46. Rxg7 Rxc5 47. Rxb7 Rc2 $18) 46... Kd5 47. Rxg7 Rxc5 48. Rxb7 {KR-KR} Rc2 49. Kf3 ({Resist} 49. Rxh7 $6 Rxg2 50. Kf4 (50. Rxa7 Rxb2 51. Kf4 Rf2+ 52. Kg5 Kxe5 $16) 50... Rf2+ 51. Kg5 Kxe5) (49. Rxa7 $6 Kxe5 50. Re7+ (50. Rxh7 Rxb2 51. Kf3 Rb3+ 52. Kg4 Rxa3 $16) 50... Kd6) 49... a6 ( 49... h5 {was worth a try.} 50. b4 (50. Rxa7 Rxb2 51. Ra5+ Ke6 $16) 50... Kxe5) 50. Rxh7 Rxb2 $2 {[#]} (50... Kxe5 51. Rb7 Rc6) 51. Rg7 Kxe5 52. Rxg6 Rb3+ 53. Kg4 Rxa3 54. h4 {White mates.} a5 55. h5 Ra2 56. g3 a4 57. h6 Rh2 58. Kg5 a3 59. Ra6 a2 60. g4 Kd4 61. Kg6 Kc4 62. h7 Kb3 63. Kg7 Rg2 64. h8=Q {Weighted Error Value: White=0.06/Black=0.36} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "11.8"] [White "Gukesh D"] [Black "Murzin, Volodar"] [Result "0-1"] [ECO "E68"] [WhiteElo "2578"] [BlackElo "2502"] [Annotator "TA"] [PlyCount "90"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,90,25,25,35,29,24,41,0,0,0,8,16,21,6,22,-18,-18,-14,-12,-7,0,-14,-19, -2,22,24,24,0,0,0,7,0,29,16,29,29,25,12,9,9,10,9,9,-34,-37,-38,-33,-68,-76, -129,0,-592,0,0,0,-101,-110,-280,-266,-313,-202,-352,-333,-323,-316,-342,-377, -543,-309,-600,-586,-1325,-1253,-29986,-29987]} 1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. e4 a6 9. h3 b5 10. dxe5 {E68: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4.} Nxe5 11. Nxe5 dxe5 12. Qe2 {White is slightly better.} c6 13. Rd1 {[#]} Qa5 $146 ({Predecessor:} 13... Qe7 14. Be3 Be6 15. cxb5 axb5 16. Rdc1 Rfd8 17. a4 Bc4 18. Qe1 Qb4 19. axb5 cxb5 { 1/2-1/2 (19) Blagojevic,D (2492)-Nestorovic,L (2382) Skopje 2018}) 14. Bd2 b4 15. Nb1 Rd8 16. Be3 (16. Na3 {is interesting.} Qa4 17. Rdc1 c5 18. Nc2 Bb7 19. Bg5) 16... Rxd1+ 17. Qxd1 Be6 18. Nd2 Nd7 19. Qc2 Bf8 20. Bf1 Qc7 21. c5 a5 22. a4 bxa3 23. Rxa3 Rb8 24. Qc3 Rb4 25. Kh2 Be7 26. Kg2 Nf6 27. f3 Nd7 28. b3 h5 29. h4 Kg7 30. Ra4 Rxa4 31. bxa4 Qa7 {[%CAl Re7c5]} 32. Bc4 {[#] And now Bxe6 would win.} Bxc5 33. Bxe6 (33. Kf2 $142) 33... fxe6 (33... Bxe3 $17 34. Bh3 ( 34. Bxd7 Bd4 $17 35. Qc2 (35. Qxc6 $2 Bg1 $19)) 34... Bg1) 34. Bg5 $2 {[%mdl 8192]} (34. Bxc5 $11 {and White stays safe.} Qxc5 35. Qxc5 Nxc5 36. Nc4) 34... Qb6 $2 ({Black should play} 34... Bg1 $19 {( -> ...Qf2+)} 35. Be3 Bxe3) 35. Nc4 Qb4 36. Qd3 (36. Bd2 $11) 36... Bd4 $40 {[%mdl 128] Black goes for the king.} 37. f4 $2 {This move loses the game for White.} (37. Bd2 $17 Qxa4 38. Nxa5) 37... Nc5 38. Qe2 Nxe4 {[%mdl 64] [#] Hoping for ...Qb1. Deflection} 39. Qxe4 ( 39. fxe5 {might work better.} Nxg5 40. hxg5) 39... Qxc4 $19 40. fxe5 Qd5 ({Not } 40... Qxa4 41. Bh6+ Kf7 42. Be3 $17) 41. Bf6+ Kf7 42. Kf3 (42. Qf3 $142 Ke8 43. Bg5) 42... c5 43. Kf4 $2 (43. Bh8) 43... c4 44. Qxd5 exd5 45. e6+ Kxf6 { Weighted Error Value: White=0.86/Black=0.28} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "11.9"] [White "Badelka, Olga"] [Black "Khademalsharieh, Sarasadat"] [Result "1/2-1/2"] [ECO "E16"] [WhiteElo "2418"] [BlackElo "2494"] [Annotator "TA"] [PlyCount "164"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,163,0,6,16,25,0,1,-26,-26,-40,-25,-67,-41,-48,-46,-45,-47,-56,-40, -47,-29,-32,-42,-36,-8,-38,-24,-52,0,-37,-37,-51,-47,-50,-39,-39,-29,-46,-46, -46,-45,-45,-48,-48,-47,-58,-58,-55,-46,-50,-50,-58,-47,-37,-29,-23,-23,-31, -36,-29,0,-87,-87,-89,-80,-93,-90,-87,-83,-81,-81,-83,-18,-18,-22,-43,-37,-20, -4,-45,0,0,0,-68,-61,-85,-86,-114,0,0,0,0,0,0,9,-105,-112,-110,0,8,8,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29985,0,0, 0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb4+ 5. Nbd2 Bb7 6. Bg2 O-O 7. O-O d5 8. b3 {E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+.} dxc4 {[#]} 9. bxc4 $146 ({Predecessor:} 9. Nxc4 c5 10. Bb2 cxd4 11. Qxd4 Qxd4 12. Nxd4 Bxg2 13. Kxg2 Rc8 14. Rfd1 Nbd7 15. g4 h6 {1/2-1/2 (43) Donchenko,A (2659)-Svane,F (2421) Magdeburg 2021}) 9... c5 10. dxc5 Bxc5 11. Nb3 Be7 12. Bb2 Nbd7 13. Rc1 Rc8 14. Qd2 Qc7 15. Rfd1 Rfd8 16. Qe3 Ng4 17. Qf4 Qxf4 18. gxf4 Nc5 19. h3 Nf6 20. Ne5 Bxg2 (20... Nfe4 $15) 21. Kxg2 Nfd7 22. Kf3 Nxe5+ 23. Bxe5 f6 24. Bd4 Na4 25. Be3 Rxd1 26. Rxd1 Rc7 27. Nd4 Rd7 ({Reject} 27... Rxc4 $6 28. Nxe6 Kf7 29. f5 $14) 28. Rc1 Kf7 29. Nb3 Rc7 30. Nd4 Bc5 31. Nb5 Rd7 32. Nc3 Bxe3 (32... Nxc3 {seems wilder.} 33. Rxc3 Bb4 34. Rc1 Rc7 35. a4 Kg6) 33. Kxe3 Nxc3 34. Rxc3 $15 {[%mdl 4096] Endgame KR-KR} Rc7 35. Kd4 Kg6 36. e4 Kh5 37. e5 (37. c5 $1 $11) 37... Kg6 $17 38. Ke4 Rc5 39. Rg3+ Kf7 40. Kd4 Ra5 41. a3 Ra4 42. Rb3 h5 (42... h6 $17) 43. h4 $11 Ra5 44. Rd3 Kg6 45. Rg3+ $1 Kh6 46. Rd3 Rc5 47. Rg3 Rc7 48. Rb3 (48. exf6 $11 gxf6 49. Rg8) 48... Kg6 49. exf6 gxf6 50. Rb5 { [#]} Rc6 (50... Rd7+ $1 $17 51. Ke3 Rd1) 51. a4 a6 52. Rb1 Kf5 53. a5 $1 { [%CAl Ra5b6]} bxa5 54. Ra1 (54. c5 $11 {keeps the balance.}) 54... Kxf4 $17 55. Rxa5 e5+ (55... f5 $17 56. c5 Kg4) 56. Kd5 $11 Rc8 57. c5 Kf3 58. Ra2 e4 { Strongly threatening ...f5.} 59. c6 f5 {[#] ...f4 is the strong threat.} 60. Kd6 f4 61. Kd7 Rg8 {aiming for ...e3.} 62. c7 e3 63. fxe3 fxe3 64. Rxa6 e2 65. Rf6+ Kg3 66. Re6 Kf2 67. Rf6+ (67. c8=Q {looks sharper.} Rxc8 68. Kxc8 e1=R 69. Rxe1 Kxe1 70. Kd7) 67... Ke3 (67... Kg3 $5 68. Re6 $8 Kf2 $11) 68. Re6+ Kd3 ( 68... Kd2 {is more complex.} 69. Rd6+ Kc3 70. Re6 Kd3 71. c8=R Rxc8 72. Kxc8 Kd2) 69. c8=Q Rxc8 70. Kxc8 {And now Kd8 would win. KR-KPP} Kd2 71. Kd7 e1=Q 72. Rxe1 Kxe1 {KP-KP} 73. Ke6 {Intending Kf6 and mate.} Kf2 74. Kf5 Ke3 75. Kg5 $1 {[%CAl Rg5h5]} Ke4 76. Kxh5 {White wants to mate with Kg6. KP-K} Kf5 77. Kh6 Kf6 {The position is equal.} 78. h5 Kf7 79. Kh7 Kf8 80. h6 Kf7 81. Kh8 Kf8 82. h7 Kf7 {Weighted Error Value: White=0.17/Black=0.13} 1/2-1/2 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "11.10"] [White "Salimova, Nurgyul"] [Black "Liang, Awonder"] [Result "0-1"] [ECO "B07"] [WhiteElo "2395"] [BlackElo "2592"] [Annotator "TA"] [PlyCount "86"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,86,26,30,29,42,32,35,33,37,25,17,12,13,13,0,0,0,4,-89,-82,-120,-136, -181,-163,-258,-266,-245,-252,-233,-213,-231,-147,-151,-155,-172,-168,-179, -195,-204,-204,-364,-354,-339,-304,-457,-437,-437,-450,-514,-439,-572,-577, -630,-649,-605,-539,-552,-565,-780,-788,-1012,-1053,-5226,-1483,-1438,-1410, -1414,-1377,-29974,-29976,-29965,-29963,-29991,-29978]} 1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 O-O 5. Bd3 d6 6. O-O c5 7. c3 cxd4 8. cxd4 Nc6 {B07: Pirc Defence: Miscellaneous Systems.} 9. Re1 Nd7 10. Nb3 a5 {White is slightly better.} 11. a4 {[#]} Nf6 $146 ({Predecessor:} 11... Nb6 12. Bf1 Bg4 13. Be3 d5 14. e5 Rc8 15. Nc5 Nc4 16. Nd3 Nxe3 17. fxe3 f6 18. exf6 exf6 {0-1 (37) Garcia Padron,J (2435)-Todorcevic,M (2470) Fuerteventura 1992}) 12. Bd2 d5 13. e5 Ne4 14. Bxe4 dxe4 15. Rxe4 Qd5 16. Rh4 (16. Re3 $11 {keeps the balance.}) 16... f6 $17 17. exf6 Bxf6 18. Rh6 Bg4 (18... Bxd4 19. Be3 $16 (19. Nbxd4 Nxd4 20. Ng5 Nf5 $14)) (18... Nxd4 19. Nbxd4 Bxd4 20. Be3 $16) 19. h3 (19. Rc1 $142) 19... Bxf3 $19 20. Qxf3 Qxf3 21. gxf3 Kg7 ({Less strong is} 21... Nxd4 22. Nxd4 Bxd4 23. Rh4 $15) (21... Bxd4 22. Rh4 $17) 22. Re1 g5 23. Rxf6 ({Don't go for} 23. Rh5 $2 Kg6 $19) 23... exf6 ({Don't do} 23... Rxf6 24. d5 $11) 24. Bc3 Rfe8 25. Rd1 b6 26. Nd2 {[#]} Ne7 $1 27. d5 $2 (27. Nc4 {is a better defense.} Nd5 28. Bd2) 27... Nxd5 28. Bd4 Kg6 29. Ne4 (29. h4 {might work better.}) 29... Rad8 30. Rb1 Re6 31. Kh2 h6 32. h4 f5 33. Nd2 Nf4 34. Nb3 Re2 35. Rc1 Rd6 36. Rc8 Ne6 37. Be3 f4 38. Bc1 Rxf2+ (38... Rd1 $142 39. Kg2 Ree1 40. Rg8+ Kh5 41. Rxg5+ hxg5 42. Nd2 Rg1+ 43. Kh2 Rh1+ 44. Kg2 Rdg1#) 39. Kg1 Rxf3 40. Nd2 Rg3+ 41. Kh2 {[#]} Rxd2+ $1 {Black mates.} 42. Bxd2 Nd4 43. Rg8+ Kh5 {Weighted Error Value: White=0.81/Black=0.21} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "12.1"] [White "Keymer, Vincent"] [Black "Liang, Awonder"] [Result "1-0"] [ECO "E18"] [WhiteElo "2591"] [BlackElo "2592"] [Annotator "TA"] [PlyCount "89"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,89,22,12,17,18,14,16,13,16,20,16,24,28,37,37,44,13,51,15,66,68,64,62, 79,83,83,79,109,109,107,114,143,139,136,106,129,114,120,119,128,93,129,100,100, 87,154,169,171,168,296,296,296,296,296,298,302,292,298,299,297,266,377,367,979, 973,959,947,934,923,897,889,1116,1077,1129,1118]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2 d6 9. Qc2 Nxd2 {E18: Queen's Indian: Old Main Line (4 g3 Bb7 5 Bg2 Be7 6 0-0 0-0 7 Nc3).} 10. Nxd2 $1 { [%mdl 4] is more profitable than 10.Qxd2 at the moment.} c6 11. b4 {[#]} Nd7 $146 {The position is equal.} ({Predecessor:} 11... d5 12. a3 Nd7 13. Rfd1 f5 14. e3 Nf6 15. Ne2 g5 16. Nf3 Ne4 17. Ne5 Bf6 {1-0 (48) Bellmann,H (2453) -Langer,R (2362) GER email 2016}) 12. Rab1 Rc8 13. e3 Qc7 14. Rfc1 Qb8 15. a4 { [%CAl Ba2a4,Ba4a5,Ba5a6][%mdl 32]} Rfe8 16. a5 Qc7 17. Qa4 Bf8 (17... bxa5 $11 18. bxa5 (18. Qxa5 Qxa5 19. bxa5 Ba6 $14) 18... Ba6) 18. a6 $14 Ba8 19. b5 $36 {[%mdl 2048] White has some pressure.} c5 20. d5 exd5 21. Nxd5 Bxd5 22. Bxd5 ({ But not} 22. cxd5 $6 g6 $11) 22... Nf6 23. Bc6 Re5 24. Qc2 Rd8 25. Rd1 Qc8 26. h4 g6 27. Kg2 Ng4 28. Bf3 h5 29. Ne4 Qf5 30. Rbc1 d5 (30... Nh2 $142 31. Nd2 ( 31. Kxh2 Qxf3 32. Nc3 g5 $14) 31... Qxc2 32. Rxc2 Nxf3 33. Nxf3 Ree8) 31. Nc3 $16 d4 32. Nd5 Qe6 (32... Kg7 {was necessary.} 33. Qxf5 (33. exd4 cxd4 34. Qxf5 Rxf5 $16) 33... Rxf5) 33. exd4 $18 cxd4 34. Rxd4 Bc5 35. Rd2 Nf6 36. Nf4 Rxd2 37. Qxd2 Qf5 38. Qd3 Ne4 (38... Kf8 {was called for.} 39. Qxf5 Rxf5) 39. Re1 Nxf2 (39... Nf6) 40. Qxf5 {[%mdl 64] [#] Overworked Piece. White is clearly winning.} Rxf5 41. Re8+ Kg7 42. Ra8 Re5 43. Rxa7 Re1 44. Rc7 Ng4 {[#]} 45. Rxc5 $1 {[%mdl 512] Weighted Error Value: White=0.07/Black=0.22} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "12.2"] [White "Khademalsharieh, Sarasadat"] [Black "Salimova, Nurgyul"] [Result "1-0"] [ECO "D46"] [WhiteElo "2494"] [BlackElo "2395"] [Annotator "TA"] [PlyCount "69"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,69,0,0,29,24,31,21,18,15,41,24,67,64,80,68,83,74,93,0,0,0,9,15,68,33, 38,25,81,4,4,4,2,2,2,4,3,1,2,4,28,9,266,265,241,215,215,215,215,214,29992, 29993,29996,29997,29997,1016]} 1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. b3 Bd6 5. Bb2 O-O 6. Nc3 c6 7. d4 Nbd7 8. Bd3 Qe7 9. O-O b6 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran.} (9... e5 $5 {[%CAl Re5e4]} 10. Nd2 e4 $11) 10. e4 dxe4 11. Nxe4 Nxe4 {The position is equal.} 12. Bxe4 Bb7 {[#]} 13. Ne5 $146 ({ Predecessor:} 13. Re1 Nf6 14. Bc2 c5 15. d5 Rad8 16. Qd3 g6 17. Qc3 {1-0 (17) Berend,E (2326)-Krishnakumar,S (1981) Chess.com INT 2020}) 13... Bxe5 14. dxe5 Nc5 15. Bc2 Rfd8 16. Qh5 h6 17. Bc1 (17. Rad1 $16) 17... Nd3 $1 $11 18. Be3 Nb4 19. Bb1 c5 (19... Nd3 $1 $11) 20. a3 (20. Bxh6 $5 gxh6 21. Qxh6 $14) 20... Nd3 21. Ra2 {Hoping for f4.} Rd7 {[#]} (21... Be4 $11) 22. Rd2 ({Better is} 22. f4 $1 $16) 22... Rad8 23. Rfd1 $36 {[%CAl Rd2d3][%mdl 2048] White has some pressure.} g6 $1 {[%CAl Rg6h5]} 24. Qxh6 Nxe5 25. h3 {With the idea Bg5.} Rxd2 26. Rxd2 Rxd2 27. Bxd2 {Threatens to win with Bc3.} Qd8 28. Bc2 {aiming for Bc3.} Nd7 $2 {[%mdl 8192] [#] A mistake that costs the game.} (28... Qd4 $11 { and Black stays safe.}) 29. Bxg6 $1 $18 ({Less strong is} 29. Bc3 e5 $16) 29... fxg6 30. Qxg6+ {[%mdl 64] Double Attack} Kh8 31. Qh6+ Kg8 32. Qxe6+ Kh8 $2 ( 32... Kg7 $18 33. h4 Nf6) 33. Bc3+ {White mates.} Kh7 34. Qf7+ Kh6 35. Bd2+ { Weighted Error Value: White=0.15/Black=0.57} (35. Qg7+ $142 Kh5 36. g4+ Kh4 37. Qh6#) 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "12.3"] [White "Murzin, Volodar"] [Black "Badelka, Olga"] [Result "1-0"] [ECO "B26"] [WhiteElo "2502"] [BlackElo "2418"] [Annotator "TA"] [PlyCount "65"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 18,65,-11,-11,-18,-6,0,-4,0,-126,-49,-67,-57,-61,47,64,73,80,191,190, 244,186,185,180,168,189,158,127,272,194,400,383,802,397,712,710,723,738,745, 722,770,779,870,868,29991,1612,29992,29993,29994,29995]} 1. e4 c5 2. Nc3 Nc6 3. Nge2 d6 4. g3 e5 5. Bg2 g6 6. O-O Bg7 7. d3 Nge7 8. f4 O-O 9. Be3 Nd4 10. Qd2 Bg4 {B26: Closed Sicilian: 3 g3, lines with early Be3.} 11. Rae1 {[#]} Rb8 $146 ({Predecessor:} 11... Qd7 12. Nc1 Rac8 13. Nd1 Bh3 14. f5 Bxg2 15. Qxg2 gxf5 16. c3 fxe4 17. cxd4 cxd4 18. dxe4 dxe3 19. Nxe3 {0-1 (52) Hansen,C (2595) -Smirin,I (2625) Cap d'Agde 1996}) 12. h3 Be6 {The position is equal.} 13. Bf2 {[#]} (13. g4 $11) 13... b5 (13... Bxh3 $1 $17 {[%mdl 512]} 14. Nxd4 Bxg2 15. Kxg2 cxd4) 14. Nxd4 cxd4 15. Ne2 f5 ({Wrong is} 15... Bxa2 $2 16. b3 $18) ( 15... Qd7 $15) 16. exf5 $14 Bxf5 17. g4 Bd7 (17... Bc8 $16 {was worth a try.}) 18. Bh4 $18 Qe8 {[#]} (18... Kh8 {was called for.} 19. fxe5 dxe5 20. Rxf8+ Qxf8 21. Nxd4 {[%mdl 64] Pin} Re8) 19. Nxd4 $1 {[%mdl 512]} Nc6 20. Nf3 Rxf4 21. Ng5 Rxf1+ 22. Rxf1 {Bd5+ is the strong threat.} Ne7 {A mistake that costs the game. } (22... Nd4 $16 23. Qe3 Bc6) 23. Nf7 Nc8 (23... Rb6 24. d4 Be6) 24. Qa5 Be6 $2 {[#]} (24... Rb6 25. Nd8 Be6 26. Nxe6 Qxe6) 25. Nd8 (25. Bc6 $142 $1 {[%mdl 512]} Bd7 26. Bd5) 25... Nb6 $2 (25... Rb6 26. Nxe6 Qxe6) 26. Nxe6 Qxe6 27. Qxa7 {White threatens Bd5 and mate.} Nd7 28. Bc6 Rf8 29. Qxd7 Rxf1+ 30. Kxf1 Qxa2 31. Kg2 (31. b3 $142 Qb1+ 32. Be1 h5 33. Qe8+ Kh7 34. Be4 Qc1 35. Qxg6+ { [%mdl 64] Double Attack} Kg8 36. Bd5+ Kh8 37. Qe8+ {[%mdl 64] Double Attack} Kh7 38. Be4+ Kh6 39. Qxh5#) 31... h6 32. Qe8+ {[%mdl 64] Double Attack} Kh7 33. Be4 {[%csl Ge8][%CAl Re4g6] Weighted Error Value: White=0.43/Black=1.17} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "12.4"] [White "Abdusattorov, Nodirbek"] [Black "Gukesh D"] [Result "0-1"] [ECO "C54"] [WhiteElo "2634"] [BlackElo "2578"] [Annotator "Shahid"] [PlyCount "128"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,128,0,0,0,0,0,17,0,0,0,0,0,0,0,4,0,0,-29,20,23,28,14,20,11,27,0,0,0, 0,0,0,0,18,0,83,47,93,0,0,0,0,0,-5,-70,-74,-83,-71,-57,0,0,0,-70,-70,-1029, -297,-349,-310,-389,-302,-472,-442,-452,-449,-608,-602,-596,-580,-687,-693, -693,-548,-691,-688,-687,-689,-672,-666,-699,-697,-717,-714,-670,-623,-596, -595,-572,-566,-609,-399,-497,-391,-382,-308,-337,-265,-569,-550,-604,-518, -1216,-1162,-1227,-1216,-5687,-4570,-5808,-5781,-5583,-4574,-5097,-4727,-2150, -2056]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Nc3 O-O 10. Be3 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Bg4 11. h3 Bh5 12. Qc2 {The position is equal.} Nxc3 13. bxc3 f6 14. exf6 Qxf6 15. Be2 Ne7 $5 {[%CAl Bc6e7,Be7f5,Bf5d6,Bd6e4][%mdl 4] [#] Leaves trodden paths.} 16. Ne5 $146 ({Predecessor:} 16. O-O Bxf3 17. Bxf3 c6 18. Bg4 Nf5 19. Bxf5 Qxf5 20. Qxf5 Rxf5 21. Rfb1 Rf7 22. Kf1 {0-1 (51) Gonzalez Vidal,Y (2552)-Harikrishna,P (2746) Khanty Mansiysk 2019}) 16... Bxe2 17. Qxe2 Qe6 18. O-O Nf5 19. a4 c6 20. Rab1 Rab8 21. g4 Nd6 22. f4 Ne4 23. Qd3 Bc7 24. f5 Qe7 25. Bf4 Rfe8 (25... Qa3 $1 $11) 26. Rbe1 (26. c4) 26... Kh8 27. g5 ({White should play} 27. c4 $16) 27... Rf8 $1 $11 {[%CAl Rf8f5]} 28. Rxe4 dxe4 29. Qxe4 {[#] Ng6+! is the strong threat.} Rbe8 30. Re1 (30. h4 $11) 30... Bxe5 $15 31. dxe5 Qf7 32. f6 {Threatens to win with e6.} gxf6 ({Better is} 32... Qe6 $15 33. Qe3 Qf5) 33. gxf6 $11 Qh5 {[#] Hoping for ...Rxf6!} 34. e6 ( 34. Kh2 $1 $11) 34... Rxf6 $15 35. e7 $2 {[%mdl 8192] Loses the game.} (35. Be5 $15 Rexe6 36. Bxf6+ Rxf6 37. Kh2) 35... Qg6+ $2 (35... Qxh3 36. Kf2 (36. Be5 Rg8+) (36. Qe5 Rg8+ 37. Bg5 (37. Kf2 Rg2+ 38. Kf1 Qh1#) 37... Qg4+ 38. Kh1 Qh5+ ) 36... Qg4 $19) 36. Qxg6 Rxg6+ $19 {[%mdl 4096] Endgame KRR-KRB} (36... hxg6 $2 {is the wrong capture.} 37. Be5 $18) 37. Kf2 Kg8 38. Bc7 (38. Re5 {might work better.}) 38... Rf6+ 39. Kg2 Kf7 40. Bd8 Rg8+ 41. Kh1 Ke8 42. Re3 Rf1+ 43. Kh2 Rf2+ 44. Kh1 Rfg2 {( -> ...Rg1+)} 45. Re1 R2g3 {[%CAl Rg3h3]} 46. Kh2 Rxc3 47. Rf1 Re3 48. a5 Re2+ 49. Kh1 Rxe7 50. Bxe7 Kxe7 {KR-KR} 51. Rb1 Rb8 52. Rg1 Kf7 53. Rd1 Re8 54. Kg2 Re7 55. Kf3 Ke8 56. Rd6 $2 (56. h4) 56... Rd7 {Black is clearly winning.} 57. Rh6 {If only White now had time for a6!...} Kd8 58. h4 (58. a6 $142 Kc7 59. axb7 Kxb7 60. Rh4) 58... Kc7 59. h5 b5 60. axb6+ axb6 { [%CAl Ba7b6,Bb6b5][%mdl 32]} 61. Ke3 b5 62. Rf6 Kb6 63. h6 b4 64. Rf4 Kb5 { Weighted Error Value: White=0.58/Black=0.33} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "12.5"] [White "Yip, Carissa"] [Black "Yoo, Christopher Woojin"] [Result "0-1"] [ECO "A30"] [WhiteElo "2430"] [BlackElo "2457"] [Annotator "ChessBase"] [PlyCount "88"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] 1. Nf3 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. g3 {[%emt 0:00:06]} b6 {[%emt 0: 00:31]} 3. Bg2 {[%emt 0:00:02]} Bb7 {[%emt 0:00:01]} 4. O-O {[%emt 0:00:02]} Nf6 {[%emt 0:00:01]} 5. c4 {[%emt 0:00:04]} g6 {[%emt 0:00:04]} 6. b3 {[%emt 0: 00:01]} Bg7 {[%emt 0:00:02]} 7. Bb2 {[%emt 0:00:01]} O-O {[%emt 0:00:02]} 8. d4 {[%emt 0:00:11]} cxd4 {[%emt 0:00:34]} 9. Bxd4 {[%emt 0:00:14]} d6 {[%emt 0:00: 23]} 10. Nbd2 {[%emt 0:00:06]} Nbd7 {[%emt 0:00:05]} 11. Qc2 {[%emt 0:00:09]} Qc7 {[%emt 0:00:45]} 12. Rad1 {[%emt 0:00:06]} Nc5 {[%emt 0:00:21]} 13. e3 { [%emt 0:00:13]} Rac8 {[%emt 0:00:19]} 14. Qb1 {[%emt 0:00:02]} Nce4 {[%emt 0: 00:20]} 15. Qa1 {[%emt 0:00:26]} Rfd8 {[%emt 0:00:31]} 16. Rc1 {[%emt 0:00:26]} a6 {[%emt 0:00:32]} 17. Rfd1 {[%emt 0:00:05]} Bc6 {[%emt 0:00:48]} 18. Nxe4 { [%emt 0:00:10]} Bxe4 {[%emt 0:00:02]} 19. Nd2 {[%emt 0:00:13]} Bxg2 {[%emt 0: 00:03]} 20. Kxg2 {[%emt 0:00:00]} Qb7+ {[%emt 0:00:01]} 21. Kg1 {[%emt 0:00:01] } Rc7 {[%emt 0:00:32]} 22. Re1 {[%emt 0:00:52]} Rdc8 {[%emt 0:00:31]} 23. e4 { [%emt 0:00:08]} e5 {[%emt 0:00:05]} 24. Bb2 {[%emt 0:00:03]} Bh6 {[%emt 0:00: 39]} 25. Rcd1 {[%emt 0:00:39]} b5 {[%emt 0:00:36]} 26. h4 {[%emt 0:04:02]} Bxd2 {[%emt 0:00:35]} 27. Rxd2 {[%emt 0:00:00]} Nxe4 {[%emt 0:00:00]} 28. Rde2 { [%emt 0:00:06]} Nc5 {[%emt 0:00:22]} 29. Qd1 {[%emt 0:00:09]} Qf3 {[%emt 0:00: 59]} 30. Qxd6 {[%emt 0:00:18]} Nd3 {[%emt 0:00:04]} 31. Bxe5 {[%emt 0:02:34]} Nxe1 {[%emt 0:00:12]} 32. Rxe1 {[%emt 0:00:05]} bxc4 {[%emt 0:00:52]} 33. Ba1 { [%emt 0:00:15]} c3 {[%emt 0:00:12]} 34. a4 {[%emt 0:00:15]} Qc6 {[%emt 0:00:20] } 35. Qe5 {[%emt 0:00:01]} Rb7 {[%emt 0:00:10]} 36. h5 {[%emt 0:00:34]} gxh5 { [%emt 0:00:24]} 37. Qxh5 {[%emt 0:00:24]} Qg6 {[%emt 0:00:02]} 38. Qd5 { [%emt 0:00:04]} Rbc7 {[%emt 0:00:01]} 39. Qe5 {[%emt 0:00:05]} Rc6 {[%emt 0:00: 07]} 40. Qd4 {[%emt 0:00:04]} Rd6 {[%emt 0:00:15]} 41. Qb4 {[%emt 0:00:06]} c2 {[%emt 0:00:10]} 42. Bb2 {[%emt 0:00:01]} Rd1 {[%emt 0:00:11]} 43. Kg2 { [%emt 0:00:06]} Rxe1 {[%emt 0:00:05]} 44. Qxe1 {[%emt 0:00:05]} Qc6+ {[%emt 0: 00:01]} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "12.6"] [White "Nihal Sarin"] [Black "Saduakassova, Dinara"] [Result "1-0"] [ECO "A01"] [WhiteElo "2620"] [BlackElo "2500"] [Annotator "TA"] [PlyCount "67"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,67,24,10,27,21,47,27,70,79,113,108,134,151,184,121,181,137,130,107, 176,175,176,180,206,211,220,222,210,211,222,204,234,232,260,214,238,229,234, 216,246,235,244,244,237,241,270,197,197,206,246,170,309,302,396,399,512,495, 29996,29997]} 1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Nf3 d6 5. d4 exd4 6. Nxd4 Nxd4 7. Qxd4 Bf5 8. Bd3 Qd7 {White has an edge.} 9. e4 Bg6 {[#]} 10. Nc3 $1 Be7 11. O-O-O O-O 12. h3 (12. f3 $18) 12... Ne8 (12... c5 $16 {was called for.} 13. Qe3 d5) 13. Nd5 Bd8 14. Qe3 f5 (14... c6 $16 {is a better defense.}) 15. e5 $18 Bf7 {[#]} 16. Bc4 $36 {[%mdl 2048] White is on the roll.} Kh8 17. Rhe1 {Black must now prevent e6.} b5 {[#]} 18. e6 $1 Qxe6 19. Qxe6 Bxe6 20. Bxb5 ({Resist} 20. Rxe6 $6 bxc4 21. bxc4 f4 $16) 20... Bf7 21. Ne7 Rb8 22. Bd3 Bh5 23. f3 ({ Inferior is} 23. Nxf5 Bg5+ 24. Rd2 Bxd2+ 25. Kxd2 Rf7 $11) 23... Bg6 24. Kb1 a5 25. Nc6 Ra8 26. Nxd8 Rxd8 27. Re7 f4 28. a4 Bxd3 29. Rxd3 Kg8 30. Bc3 Ra8 ( 30... Rf5 $142 31. Re5 Rxe5 32. Bxe5 {[%mdl 64] Pin} Kf7 33. Bxf4 Nf6) 31. Rd5 c5 {[#]} 32. Rxd6 $3 {[%mdl 512]} c4 ({Not} 32... Nxd6 33. Rxg7+ Kh8 34. Rg6+ Rf6 35. Bxf6#) (32... Rf5 33. Rde6) 33. Rdd7 {[%CAl Re7g7] White threatens Rxg7+ and mate.} cxb3 (33... Rf5 $18 34. Bxg7 cxb3 35. cxb3 Nxg7 36. Rxg7+ { [%mdl 64] Double Attack} Kh8 37. Rxh7+ Kg8 38. Rhg7+ Kf8) 34. Rxg7+ {Weighted Error Value: White=0.14/Black=0.60} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "12.7"] [White "Zhu, Jiner"] [Black "Mammadzada, Gunay"] [Result "1-0"] [ECO "B50"] [WhiteElo "2462"] [BlackElo "2443"] [Annotator "ChessBase"] [PlyCount "65"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:02]} d6 {[%emt 0: 00:02]} 3. Bb5+ {[%emt 0:00:02]} Bd7 {[%emt 0:00:04]} 4. Bxd7+ {[%emt 0:00:03]} Nxd7 {[%emt 0:00:03]} 5. O-O {[%emt 0:00:12]} Ngf6 {[%emt 0:00:03]} 6. Qe2 { [%emt 0:00:03]} e6 {[%emt 0:00:03]} 7. b3 {[%emt 0:00:38]} g6 {[%emt 0:01:06]} 8. d4 {[%emt 0:00:11]} cxd4 {[%emt 0:00:02]} 9. Nxd4 {[%emt 0:00:00]} a6 { [%emt 0:00:44]} 10. c4 {[%emt 0:00:53]} Bg7 {[%emt 0:00:30]} 11. Rd1 {[%emt 0: 00:06]} O-O {[%emt 0:00:05]} 12. Nc3 {[%emt 0:00:29]} Re8 {[%emt 0:00:56]} 13. Bb2 {[%emt 0:00:14]} d5 {[%emt 0:01:20]} 14. e5 {[%emt 0:01:35]} Nh5 {[%emt 0: 02:11]} 15. Nf3 {[%emt 0:00:38]} Qb8 {[%emt 0:00:52]} 16. cxd5 {[%emt 0:01:58]} Nxe5 {[%emt 0:00:16]} 17. d6 {[%emt 0:00:35]} Nxf3+ {[%emt 0:00:03]} 18. Qxf3 { [%emt 0:00:03]} Rd8 {[%emt 0:00:05]} 19. Ba3 {[%emt 0:00:37]} Nf6 {[%emt 0:01: 11]} 20. Rac1 {[%emt 0:00:14]} b5 {[%emt 0:00:42]} 21. Bc5 {[%emt 0:00:03]} b4 {[%emt 0:01:12]} 22. Ne4 {[%emt 0:00:44]} Nd5 {[%emt 0:00:01]} 23. Rc4 { [%emt 0:00:38]} Qb5 {[%emt 0:00:12]} 24. Bd4 {[%emt 0:00:58]} Rac8 {[%emt 0:00: 09]} 25. Bxg7 {[%emt 0:00:10]} Kxg7 {[%emt 0:00:00]} 26. Rcd4 {[%emt 0:00:12]} h6 {[%emt 0:00:09]} 27. Qg3 {[%emt 0:00:18]} f5 {[%emt 0:00:09]} 28. Qe5+ { [%emt 0:00:13]} Kf7 {[%emt 0:00:08]} 29. Rxd5 {[%emt 0:00:14]} Qxd5 {[%emt 0: 00:00]} 30. Qf6+ {[%emt 0:00:02]} Kg8 {[%emt 0:00:02]} 31. Qxg6+ {[%emt 0:00: 01]} Kf8 {[%emt 0:00:01]} 32. Qxh6+ {[%emt 0:00:03]} Kf7 {[%emt 0:00:07]} 33. Rxd5 {[%emt 0:00:06]} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "12.8"] [White "Mendonca, Leon Luke"] [Black "Shuvalova, Polina"] [Result "1/2-1/2"] [ECO "D32"] [WhiteElo "2549"] [BlackElo "2489"] [Annotator "Shahid"] [PlyCount "185"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,185,68,33,41,57,44,47,68,29,66,62,49,67,58,67,89,3,6,-13,-19,-13,-23, -123,-42,-65,-1,-73,53,-14,-18,-14,-10,-33,-20,-66,69,-163,-161,-144,-130,-143, -122,-134,-65,-68,-30,-49,-49,-83,-9,-12,-17,-14,0,0,34,41,43,6,40,37,39,39,41, 49,62,61,145,104,128,76,104,108,228,245,296,188,194,72,137,145,141,168,156,134, 172,18,116,42,66,78,106,18,11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-81,0,0,0,0,0,0,0,0,0,-8,-8,-8,0,-8,-8,-8,-8, -8,-8,-8,-8,-8,-8,-8,0,-8,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 exd5 6. Bg5 Be6 7. e3 Nc6 {7...c4 is more fashionable.} 8. Be2 c4 {D32: Tarrasch Defence: Sidelines and lines without g3.} 9. O-O Be7 10. b3 Qa5 {White is slightly better.} 11. Qc2 {[#]} (11. Bxf6 $5 gxf6 12. Qc2 $14) 11... O-O $146 ({Predecessor:} 11... Ne4 12. Nxe4 dxe4 13. Qxe4 Bxg5 14. d5 Qxd5 15. Qxd5 Bxd5 16. Nxg5 cxb3 17. axb3 f6 {1-0 (36) Tournier,M (2135) -Liascovich,L (2300) Buenos Aires 2001}) 12. bxc4 dxc4 13. Bxf6 Bxf6 14. Ne4 Rac8 15. Nd6 (15. Bxc4 $2 Nb4 $17) (15. Nxf6+ $16 gxf6 16. e4) 15... Rc7 $11 16. Rab1 (16. Nxc4 Bxc4 17. Bxc4 b5 $15) 16... Nb4 17. Qc3 {[%CAl Rc3b4] [#]} Be7 $1 18. Ne4 (18. a3 $11 Bxd6 19. axb4) 18... Bf5 (18... Qxa2 $17 19. Ng3 ( 19. Rb2 Qa4) 19... Qa4) 19. Nfd2 b6 (19... Bxe4 $15 20. Nxe4 Qxa2) 20. a3 (20. Bxc4 $11 Bxe4 21. Nxe4) 20... Nc6 (20... Nd5 $17 21. Qxa5 bxa5) 21. Ra1 (21. Nxc4 Qxc3 22. Nxc3 Bxb1 $15) (21. Qxc4 $14 Be6 22. Qc2) 21... Be6 22. Rfc1 Rfc8 23. h3 (23. Nxc4 Qd5 $17) 23... g6 24. Bf1 (24. Nxc4 Qd5 $17) 24... f5 (24... Qxc3 $1 $15 25. Nxc3 Na5) 25. Ng3 $2 ({Reject} 25. Nxc4 Qxc3 26. Nxc3 Nxd4 $1 $17) (25. Bxc4 $14 {was the only good move.} Nd8 26. Qxa5 bxa5 27. Bxe6+ Nxe6 28. Rxc7 Rxc7 29. d5 $1 fxe4 30. dxe6) 25... Qxc3 $19 26. Rxc3 b5 27. Ne2 a5 28. Rcc1 Bf7 (28... Na7 $17 29. Nf4 Bf7) 29. a4 $1 $15 Bb4 30. Nb1 bxa4 31. Nec3 a3 (31... f4 $17 {Threatening ...fxe3.} 32. Nxa4 fxe3 33. fxe3 Ne7) 32. Nxa3 $11 Ne7 33. g3 Rb8 34. Na4 {[%CAl Rf1c4]} c3 35. Nb5 {[%mdl 64] Double Attack} Rc6 36. Naxc3 Rbc8 {[%CAl Rb4c3]} 37. Ne2 Rc2 38. Rxc2 Rxc2 39. Nf4 g5 40. Nd3 Nd5 (40... Kg7 $14) 41. Ne5 Be6 42. Na3 ({Better is} 42. Bd3 Rc8 43. Bc4) 42... Rc7 43. Nac4 (43. Nb5) 43... Nc3 (43... Bc3 $16 44. Ra4 f4) 44. Nxa5 $18 f4 45. Nac6 ({But not} 45. exf4 gxf4 46. Nac6 Bd6 $18) 45... Bd6 46. Ra7 ( 46. gxf4 gxf4 47. exf4 Bd5 48. Ra8+ Kg7 49. Ra6 Bxc6 50. Nxc6 Nd5 (50... Bxf4 51. Nd8 $18) 51. Nd8 $18) 46... fxe3 (46... Rxa7 $142 47. Nxa7 fxe3 48. fxe3 Bxe5 49. dxe5 Nd1) 47. Ra8+ $16 Kg7 48. fxe3 Ne4 49. Bg2 Nxg3 50. Ra6 $2 (50. d5 $18 Bf5 51. Nc4) 50... Bf5 (50... Nf5 $1 $11) 51. Ra2 (51. Nc4 $16 Bf8 52. N6e5) 51... h5 52. Nc4 Bb4 53. Nxb4 ({White should try} 53. d5 $16 {Hoping for d6.} Bc3 54. Nd6) 53... Rxc4 $11 54. Nd5 Rc1+ 55. Kf2 h4 56. Nb4 Kg6 57. Nc6 ( 57. Rb2 {seems wilder.} Ne4+ 58. Kf3 Nc3 59. Na2 Be4+ 60. Kg4) 57... Ne4+ 58. Bxe4 Bxe4 {[%mdl 4096] Endgame KRB-KRN} 59. Ne5+ Kf5 60. Ra5 Rc2+ 61. Ke1 Rc1+ 62. Kd2 Rc2+ 63. Kd1 {And now Nd3+ would win.} Rg2 64. Ng4+ Kg6 65. Ra6+ Kg7 { Threatens to win with ...Rg1+.} 66. Ra7+ Kg6 67. Ke1 (67. Ne5+ {is more complex.} Kf6 68. Ra5 Rg3 69. Ng4+ Kg6 70. Ra6+) 67... Rg3 68. Ra6+ Kg7 69. Ra7+ Kg6 70. Nf2 Bf5 ({Not} 70... Rxe3+ $2 71. Kd2 $18) 71. Ra6+ Kh5 72. e4 Bxh3 73. d5 Bg4 74. Ra8 {[#]} (74. d6 $11) 74... h3 (74... Re3+ $1 $17 75. Kf1 Be2+ 76. Ke1 Bf3+ 77. Kf1 Rb3) 75. Rh8+ {The position is equal.} Kg6 {White must now prevent ...Kg7.} 76. Nxg4 Rxg4 77. Rxh3 {aiming for Re3.} Rxe4+ {KR-KR } 78. Kf2 Rd4 79. Ra3 Rxd5 80. Kg3 Kf5 81. Ra4 Rd3+ 82. Kg2 Rb3 83. Rc4 Kg6 84. Ra4 Kh5 85. Rc4 Rb2+ 86. Kg3 Rb3+ (86... Rb6 {looks sharper.} 87. Rc3 Rb4 88. Ra3 Rg4+ 89. Kh2 Rh4+) 87. Kg2 g4 88. Rc8 Kg5 89. Rg8+ Kf5 90. Rf8+ Kg5 91. Rg8+ Kf5 92. Rf8+ Kg5 93. Rg8+ {White used his chance. Weighted Error Value: White=0.36/Black=0.33} 1/2-1/2 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "12.9"] [White "Praggnanandhaa R"] [Black "Abdumalik, Zhansaya"] [Result "0-1"] [ECO "D20"] [WhiteElo "2608"] [BlackElo "2472"] [Annotator "Shahid"] [PlyCount "84"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,84,46,54,81,78,58,64,60,69,85,70,35,14,23,29,0,266,278,269,150,243, 244,260,233,249,257,229,258,323,328,372,344,358,345,353,324,484,435,494,479, 553,491,493,519,538,387,577,369,651,422,932,705,1772,552,546,543,521,511,687, -1176,-1162,-1345,-1313,-1198,-1087,-1305,-1302,-1464,-1464,-1445,-1423,-1404, -1321,-29986,-29987,-29992,-29993]} 1. d4 d5 2. c4 dxc4 3. e4 b5 4. a4 c6 5. axb5 cxb5 6. Nc3 {[%CAl Bb1c3,Bc3d5,Bd5c7,Bc7a6][%mdl 32] D20: Queen's Gambit Accepted: 3 e3 and 3 e4.} Qb6 7. Nd5 Qb7 8. Bf4 {White is slightly better.} e5 $1 {[%CAl Re5f4]} 9. Bxe5 {Black must now prevent Nc7+.} Nd7 {[#]} 10. Bg3 $146 ({Predecessor:} 10. Nf3 Ngf6 11. Bxf6 Nxf6 12. Nxf6+ gxf6 13. Be2 Bb4+ 14. Kf1 O-O 15. d5 Re8 16. Nd4 Rxe4 {0-1 (23) Greenfeld,A (2502)-Nguyen,T (2577) Tornelo INT 2021}) 10... Ngf6 11. Nc7+ Kd8 12. f3 Rb8 $2 {[%mdl 8192] [#]} ( 12... Bb4+ $11 {and Black stays safe.} 13. Kf2 Nxe4+ 14. fxe4 Nf6) 13. Na6 $1 $18 Ra8 14. Nh3 ({White should try} 14. Qd2 $18) 14... h6 (14... Nh5 $16) 15. Qd2 Ne8 16. Nf4 Qc6 17. Nb4 Bxb4 18. Qxb4 $40 {[%mdl 128] Hoping for Nd5. White has strong attack.} Nc7 19. d5 Qb6 20. Bf2 Qf6 21. Ne2 Ne5 {aiming for .. .Nd3+.} 22. Nd4 a6 (22... a5 $142 23. Rxa5 Rxa5 24. Qxa5 Qa6 25. Qxa6 Bxa6) 23. Be2 h5 24. b3 h4 25. h3 Rh6 26. bxc4 bxc4 27. Bxc4 a5 (27... Qe7 {was necessary.} 28. Qxe7+ Kxe7) 28. Qc5 Rg6 $2 (28... Ba6 29. Bf1 (29. Qxa5 $2 Bxc4 {[%mdl 64] Discovered Attack} 30. Qc3 Rxa1+ 31. Qxa1 Qg5 $19) (29. Rxa5 Nxc4 30. Rxa6 Rxa6 $14) 29... Qd6 30. Qxd6+ (30. Rxa5 Qxc5 31. Rxc5 Bxf1 $11) (30. Qxa5 Bxf1 31. Qxa8+ Nxa8 $11) 30... Rxd6) 29. Rc1 (29. d6 $1 Qxd6 30. Rd1 $18 Nxc4 (30... Qxc5 $4 31. Nc6+ Ke8 32. Rd8#)) 29... Ne8 (29... Qe7 $142 30. Qxe7+ Kxe7) 30. Bb5 Rxg2 31. Kf1 (31. Nc6+ $142 Nxc6 32. dxc6) 31... Rxf2+ 32. Kxf2 Bd7 33. Rhd1 Nd6 {Threatens to win with ...Nxe4+.} 34. Bxd7 $4 {[%mdl 8192]} ( 34. Qc7+ $18 Ke8 35. Bxd7+ {[%mdl 64] Overworked Piece} Nxd7 36. Rc6 Nxe4+ 37. Ke3 Qg5+ 38. Kxe4) 34... Nxe4+ $19 {[%mdl 64] [#] Double Attack} 35. Ke3 Nxc5 36. Rxc5 Nxd7 37. Rc6 Qe5+ 38. Kf2 Rb8 39. Rc2 Qg3+ 40. Ke2 Ke8 41. Nc6 Qg2+ 42. Kd3 Rb3+ {Weighted Error Value: White=0.94/Black=0.56} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "12.10"] [White "Bjerre, Jonas Buhl"] [Black "Lei, Tingjie"] [Result "0-1"] [ECO "C65"] [WhiteElo "2542"] [BlackElo "2505"] [Annotator "TA"] [PlyCount "166"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,166,10,16,13,22,20,28,24,15,31,26,10,29,10,40,0,0,-8,0,-8,-10,-38,-35, -38,-11,-21,-15,-27,22,-23,-29,-17,-20,-33,-20,-118,-10,-11,-4,-95,-85,-104, -13,-34,-10,-7,-6,-7,0,-7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,28,16,392,0,0,-356,-350, -353,-331,-270,0,-348,-77,-114,-110,-258,-17,-12,348,348,344,333,262,16,43,15, 32,-65,-22,-105,-105,-105,-124,-132,-132,-132,-132,-132,-132,-132,-132,-132, -132,-132,-122,-123,-125,-122,-102,-267,-267,-267,-267,-493,-493,-493,-281, -410,-281,-728,-281,-281,-266,-266,-266,-266,-266,-347,-347,-347,-347,-347, -347,-602,-347,-793,-702,-1421,-429,-429,-429,-970,-341,-1562,-1468,-1833, -1869,-2329,-2361,-1836,-1687,-5110,-5110,-29980,-29981]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 O-O 6. O-O {C65: Ruy Lopez: Berlin Defence (3...Nf6) , unusual lines and 4 0-0 Bc5.} d5 7. exd5 Qxd5 8. Bc4 {White has an edge.} Qd8 9. Nbd2 a5 {[#]} 10. Re1 $146 ({Predecessor:} 10. a4 h6 11. Qe2 Re8 12. h3 Bf5 13. Ne4 Nxe4 14. dxe4 Be6 15. Bb5 Qf6 16. Be3 {1/2-1/2 (40) Caruana,F (2835) -Roiz,M (2583) Chess.com INT 2020}) 10... h6 11. h3 (11. Nxe5 Nxe5 12. Rxe5 Bxf2+ $1 13. Kh1 Ng4 $17) 11... Re8 12. Qe2 a4 13. a3 Bd7 14. Ne4 Nxe4 15. dxe4 Na5 16. Ba2 Ra6 17. Be3 Bxe3 18. Qxe3 Rb6 19. Re2 Be6 20. Qc5 Bxa2 21. Qxa5 Bb3 22. Nxe5 (22. c4 $11) 22... Rbe6 (22... Qg5 $1 $17 23. f4 Qxf4) 23. Nf3 $11 Rxe4 24. Rd2 (24. Rxe4 $11 Rxe4 25. Nd4) 24... Qc8 $17 25. Nd4 b6 ({Black should try} 25... R4e5 $17 26. Qa7 Bd5) 26. Qb5 $11 Re1+ 27. Rxe1 Rxe1+ 28. Kh2 c5 29. Nf3 Qc7+ 30. g3 Re7 31. Nh4 g6 32. Ng2 Kg7 33. Ne3 Qb7 34. Qe2 Qe4 35. Qg4 Qb1 36. h4 h5 37. Qg5 Re6 {[%mdl 8192]} (37... f6 $11 38. Qf4 Qe4) 38. Qf4 $2 (38. g4 $1 $18 Kh7 39. gxh5) 38... Qe1 39. Rd7 $2 {[%mdl 8192]} (39. Rd8 $11 ) 39... Rf6 $19 40. Qe5 Qxf2+ {[%mdl 64] Double Attack} 41. Ng2 {next Rd8 is good for White.} Be6 $2 (41... Qxb2 $2 42. Rd8 $18) (41... Bc4 $1 $19 {[%CAl Rc4f1]} 42. Rd6 Bf1 43. Qxf6+ Qxf6 44. Rxf6 Kxf6) 42. Rd1 {[%mdl 8192]} (42. Rd8 $11) 42... Qxb2 $2 (42... Kh7 $1 $19 {Hoping for ...Bg4.} 43. c4 Bxc4) 43. Rf1 $17 Bf5 44. Kg1 (44. Rd1 $17 {is the only way for White.} Qc2 45. Rd6) 44... Qd2 $2 ({Worse is} 44... Qxa3 45. Ne3 $11) (44... Qc2 $1 $19 45. Nf4 Qe4 46. Qxe4 Bxe4) 45. Ne3 $11 {[#]} Qd6 {[%mdl 8192]} (45... Kh7 $1 $11 {and Black stays safe.} 46. Nxf5 Rxf5 47. Rxf5 gxf5 48. Qxf5+ Kg7) 46. Rxf5 $18 Qxe5 47. Rxe5 {[%mdl 4096] Endgame KRN-KR} Rd6 48. Kf2 $2 (48. Rd5 $1 $18 {[%CAl Rd5d6]} Rxd5 49. Nxd5) 48... Rd2+ $11 49. Kf3 {And now Nc4 would win.} (49. Ke1 $5 {[%CAl Re1d2]} Rd3 50. Nd5 $14) 49... Rd3 50. Re4 ({Better is} 50. c4 $14) 50... b5 $15 51. c4 (51. Re7 $11 {remains equal.}) 51... b4 $17 52. axb4 {[#]} a3 $1 {[%CAl Ra3a2]} ({Much worse is} 52... cxb4 $6 53. c5 $11) 53. Re7 ({ But not} 53. bxc5 $2 a2 $19) 53... cxb4 54. Ra7 {[#]} b3 $1 {[%CAl Rb3b2] ... b2 is the strong threat.} 55. Rxa3 {[#] Strongly threatening Ra7.} b2 $1 { [%mdl 512]} 56. Rxd3 b1=Q {KQ-KRN} 57. Rd2 Qh1+ 58. Kf2 Qc1 59. Rc2 Qa1 60. c5 {Black must now prevent c6.} Qf6+ 61. Kg1 $2 (61. Ke2 $17 {was worth a try.} Qc6 62. Kd3) 61... Qf3 $19 62. Nf1 {and the idea c6 leaves White hopeful.} Qe4 63. Rc1 $2 (63. Rf2) 63... Qd4+ 64. Kh1 {White hopes to continue with c6.} Qb2 (64... g5 $142 65. Rc2 gxh4 66. gxh4 Qxh4+ 67. Rh2 Qc4 68. Rg2+ Kh6) 65. Re1 ( 65. Rc4 $142 Qf2 66. Rf4 Qxc5 67. Kg2) 65... Qc3 66. Rb1 $2 (66. Re3 Qxc5 67. Kg2) 66... Qc4 $2 (66... f5 67. Rb8 f4) 67. Re1 Qd5+ 68. Kg1 Qxc5+ 69. Ne3 f6 70. Kf2 g5 71. hxg5 fxg5 72. Rd1 Kg6 73. Rd5 $2 (73. Rg1) 73... Qb4 {aiming for ...h4.} 74. Rd1 $2 (74. Rd3) 74... Qb2+ 75. Kf1 Qa3 (75... Qh2 $142 76. Rd6+ Kf7 77. Rd7+ Ke6) 76. Kf2 Qa2+ 77. Kf1 (77. Kg1 $142) 77... Kf6 $2 (77... Qh2 78. Rd6+ Kf7 79. Rd7+ Ke6) 78. Re1 $2 (78. Rd6+ Ke5 79. Rd2 Qa6+ 80. Kg2) 78... Qh2 79. Nd5+ Kf7 80. Re7+ Kf8 81. Re5 Qxg3 82. Rf5+ Kg7 {( -> ...Qh3+)} 83. Rf2 Qd3+ {[%mdl 64] Double Attack. A wild game. Weighted Error Value: White=0.53/Black=0.47} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "13.1"] [White "Lei, Tingjie"] [Black "Keymer, Vincent"] [Result "0-1"] [ECO "B90"] [WhiteElo "2505"] [BlackElo "2591"] [Annotator "TA"] [PlyCount "84"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,84,24,0,3,11,14,0,0,4,13,-5,13,6,16,0,0,0,14,7,41,35,43,20,60,53,57, 27,54,52,114,71,67,57,56,57,85,80,88,88,106,79,101,71,79,81,86,84,84,85,78,97, 119,110,99,97,131,131,116,41,33,-3,-4,-3,-5,-160,-133,-331,-328,-29991,-89, -29992,-29993,-29994,-29995]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e5 $1 {The main line 6...e5 scores better than 6...e6.} 7. Nb3 Be7 { B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 8. Be3 h6 9. g3 {[#]} O-O $146 {The position is equal.} ({Predecessor:} 9... Be6 10. Bg2 Nbd7 11. O-O Rc8 12. a4 h5 13. a5 Qc7 14. Nd2 h4 15. g4 Nf8 {1-0 (42) Mohamad,E (2356)-Lei,T (2505) Tornelo INT 2021}) 10. Bg2 Be6 11. O-O Nbd7 12. a4 Nb6 13. Na5 Qc7 14. Qd2 Rfd8 15. Nd5 Bxd5 16. exd5 Rdc8 17. Rfc1 Nc4 18. Nxc4 Qxc4 19. a5 Nd7 20. Ra3 Qc7 (20... f5 $14) 21. Rc3 Qd8 22. Rb3 Nc5 23. Ra3 Bg5 24. b4 {And now Bxg5 would win.} Nd7 25. c4 Rab8 26. h4 Bxe3 27. Qxe3 Nf6 28. Bh3 Rc7 29. Rd3 Qe7 30. c5 Rd8 {[%CAl Bb8d8,Bd8d5,Bd5a5][%mdl 32]} 31. c6 bxc6 32. dxc6 d5 33. Qb6 d4 {next ...Nd5 is good for Black.} 34. Bg2 ({But not } 34. Qxa6 $6 Qxb4 35. Qb6 Nd5 $11) 34... Nd5 35. Bxd5 ({Worse is} 35. Qxa6 Nxb4 36. Qc4 Nxd3 $17) ({White should try} 35. Qc5 $1 $16 Qd6 36. b5 axb5 37. Qxb5) 35... Rxd5 $14 36. Qxa6 {Threatens to win with Qc4.} Qxb4 37. Qa8+ Kh7 38. Qe8 $2 ({White should play} 38. a6 $11) 38... Rxa5 $17 39. Qd8 $2 {[#]} ( 39. h5 $17) 39... Rxc6 $3 $19 {[%mdl 512]} 40. Rxc6 {[#]} (40. Rf1 $19) 40... Qb1+ $2 (40... Qe1+ $1 {mates} 41. Kg2 Ra1 42. Qg8+ {[%mdl 64] Decoy} Kxg8 43. Rc8+ Kh7 44. Rh8+ Kxh8 45. Kh3 Qh1+ 46. Kg4 Qe4+ {[%mdl 64] Double Attack} 47. f4 h5+ {[%mdl 64] Decoy} 48. Kxh5 Qg6#) 41. Kg2 $2 {[%mdl 8192]} (41. Kh2 $17 Ra1 42. Qd5 Qxd3 43. Rc7) 41... Ra1 {[%csl Ga1][%CAl Rb1h1]} 42. Rxh6+ gxh6 { [%csl Ga1][%CAl Rb1h1] Weighted Error Value: White=0.66/Black=0.30} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "13.2"] [White "Abdumalik, Zhansaya"] [Black "Bjerre, Jonas Buhl"] [Result "0-1"] [ECO "B91"] [WhiteElo "2472"] [BlackElo "2542"] [Annotator "TA"] [PlyCount "74"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,74,18,31,-6,19,8,1,8,1,12,0,-68,-18,-14,-9,-16,0,-7,51,-62,-59,-66,0, 0,0,0,0,0,0,0,0,0,0,0,0,-5,0,0,0,-126,-108,-364,-366,-356,-339,-428,-359,-338, -269,-247,-263,-246,-232,-252,-181,-1071,-1018,-29995,-29996]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nb3 Be7 8. Bg2 O-O 9. O-O b5 { [%CAl Bb7b5,Bb5b4][%mdl 32]} 10. Be3 {B91: Sicilian Najdorf: 6 g3.} Bb7 11. a4 b4 $1 {[%CAl Rb4c3]} 12. Nd5 {The position is equal.} Nxd5 13. exd5 a5 {[#]} 14. h4 $146 (14. Rc1 $11) ({Predecessor:} 14. Qd2 Nd7 15. Rfc1 Nf6 16. h3 Qd7 17. c3 bxc3 18. bxc3 Rfb8 19. c4 Qd8 20. Qc3 {1/2-1/2 (60) Tosic,S (2323) -Nikolic,M (2307) Belgrade 2010}) 14... f5 15. f4 $1 {[%CAl Rf4e5] Threatening fxe5.} Nd7 16. fxe5 $1 Nxe5 17. Nd4 Ng4 {[#]} (17... Qd7 $11) 18. Bf4 ({ Of course not} 18. Nxf5 Nxe3 19. Nxe3 Bf6 $17) (18. Ne6 $1 $14 Nxe3 19. Qd4 { [%mdl 64] Double Attack}) 18... Qb6 $15 19. Kh1 Bf6 ({Black should try} 19... g6 $15 20. Qd2 Bf6) 20. Nxf5 $11 Nf2+ 21. Rxf2 $1 Qxf2 22. Nxd6 Bxb2 23. Qe1 Qxe1+ ({Don't play} 23... Rxf4 $6 24. gxf4 Qxe1+ 25. Rxe1 $16) 24. Rxe1 Ba6 25. Bh3 h6 26. Re7 Rad8 {Strongly threatening ...Rxf4!} 27. Be6+ Kh7 {...Rxf4! is the strong threat.} 28. Nf7 (28. Nb7 $11 {remains equal.} Ra8 29. d6) 28... Rde8 $17 29. Ra7 {[%mdl 8192] This costs White the game.} (29. Rxe8 $17 { was called for.} Rxe8 30. Nd6) 29... Bc8 $19 30. Bd6 {[#]} Rg8 ({Weaker is} 30... Bxe6 31. dxe6 Rg8 32. e7 $17) 31. Be7 {intending Bxc8.} Bxe6 32. dxe6 Rc8 33. Rxa5 Rxc2 34. Bxb4 Re2 35. e7 Bd4 36. Rf5 $2 (36. Nd6 Rxe7 37. Kg2) 36... Rc8 {( -> ...Rc1+)} 37. Rf1 Rcc2 {[%csl Gc2][%CAl Re2h2] Weighted Error Value: White=0.90/Black=0.17} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "13.3"] [White "Shuvalova, Polina"] [Black "Praggnanandhaa R"] [Result "0-1"] [ECO "B90"] [WhiteElo "2489"] [BlackElo "2608"] [Annotator "TA"] [PlyCount "90"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,90,6,6,11,0,10,0,0,0,9,14,32,0,0,-12,-10,-28,0,-30,0,-28,-29,-27,-26, -34,-29,-35,-36,-76,-83,-71,-57,-82,-81,-85,-81,-71,-69,-72,-73,-123,-126,-286, -4,-15,0,-13,0,0,0,0,6,-427,-417,-413,-406,-406,-410,-400,-271,-425,-412,-432, -456,-793,-705,-687,-669,-771,-749,-1921,-1448,-29985,-29986,-29992,-29993, -29993,-29994]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 e5 7. Nde2 Be7 8. O-O Be6 9. Ng3 Nc6 10. a3 Rc8 {The position is equal.} 11. Re1 h6 12. h3 O-O 13. Bd2 Qd7 14. Qe2 Bd8 15. Rad1 Bb6 16. Kh2 Rfe8 17. Qf1 Qc7 18. f4 exf4 19. Bxf4 Ne5 20. Kh1 Qe7 21. Qe2 {[#]} Nfg4 $1 {Strongly threatening .. .Nf2+.} 22. Rf1 Qh4 $36 {[%mdl 2048] Black has some pressure.} ({Much weaker is } 22... Nxd3 $6 23. Rxd3 Rc6 24. Qf3 $11) 23. Bxe5 dxe5 24. Rf3 {[#]} Nf2+ $1 25. Rxf2 {Threatens to win with Rf3.} Qxg3 26. Rf3 Qh4 27. Rff1 {[#]} Bd4 $1 28. Nd5 $2 (28. Rb1 $17) 28... f5 $2 ({Less strong is} 28... Bxb2 29. Rb1 $15) ({Better is} 28... Bxd5 $19 29. exd5 e4 30. Bc4 Be5) 29. c3 Ba7 30. c4 f4 31. b4 Bd4 32. c5 Kh8 33. Rc1 $2 {[%mdl 8192]} (33. Bc4 $11) 33... Bxh3 $1 $19 34. gxh3 Qxh3+ 35. Qh2 Qxd3 {[%mdl 64] Double Attack} 36. Qg2 Rcd8 37. Rcd1 (37. Qf3 {was called for.} Qxf3+ 38. Rxf3) 37... Qxa3 38. Rf3 Qa4 39. Rxd4 (39. Rfd3 $142) 39... Qa1+ {[%mdl 64] Double Attack, Zwischenzug} 40. Kh2 Qxd4 41. Qg6 { intending Nf6!} Qd2+ 42. Kh1 Rf8 43. Rh3 f3 {Black mates.} 44. Rh5 f2 45. Rf5 f1=Q+ {Weighted Error Value: White=0.83/Black=0.37} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "13.4"] [White "Mammadzada, Gunay"] [Black "Mendonca, Leon Luke"] [Result "0-1"] [ECO "B90"] [WhiteElo "2443"] [BlackElo "2549"] [Annotator "TA"] [PlyCount "116"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,116,29,29,29,50,50,75,53,70,61,90,101,103,71,72,73,80,66,69,68,61, -10,-19,-12,-2,0,0,-61,0,0,59,0,0,0,0,-60,-60,-60,-60,-60,-60,-60,-60,-61,0,-8, 0,-60,-8,-67,-6,-20,-13,-20,0,-189,-201,-320,-313,-355,-209,-168,0,-354,-338, -301,-225,-292,-218,-209,-217,-248,-258,-492,-197,-165,-125,-121,-121,-12836, -12837,-12837,-12837,-12841,-12841,-12841,-12842,-12842,-12843,-12844,-12844, -12845,-12846,-12846,-12847,-12847,-12845,-12850,-27999,-27999,-27999,-27999, -27999,-27999,-27999]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 g6 7. g4 Bg7 8. Be3 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Nc6 9. Qd2 {9.Bg2 is the fancy move.} Bd7 10. Be2 {White is better.} O-O 11. g5 {[#]} Nh5 $146 ({Predecessor:} 11... Ne8 12. h4 b5 13. h5 Nc7 14. f4 e6 15. Bf3 Nxd4 16. Bxd4 e5 17. Bb6 Bc6 18. hxg6 fxg6 {1/2-1/2 (41) Wallner,J (1570)-Lajda,D (1786) Slovakia 2017}) 12. Bxh5 gxh5 13. O-O-O Ne5 14. Qe2 Rc8 {[#]} 15. Nd5 $1 Nc4 16. Kb1 Be6 17. Nf4 (17. c3 $14) 17... Qa5 { White must now prevent ...Nd2+!} 18. Nfxe6 fxe6 19. Rd3 Nxe3 ({Of course not} 19... Nxb2 $6 20. Kxb2 Bxd4+ 21. Rxd4 $16 (21. Bxd4 Rc4 $16)) 20. Qxe3 (20. fxe3 $11 Bxd4 21. exd4) 20... Qe5 (20... Bxd4 $15 21. Rxd4 Qc5) 21. c3 $11 Rf7 (21... b5 $11) 22. h4 (22. Ne2 $14) 22... Rcf8 23. f3 Qg3 24. Rg1 ({But not} 24. Nxe6 $2 Rxf3 25. Qe2 Rxd3 $19) ({White should play} 24. g6 $1 $11 hxg6 25. Rg1 Bxd4 26. Qxd4) 24... Bxd4 $15 25. Rxg3 Bxe3 26. Rxe3 {[%mdl 4096] Endgame KRR-KRR} Rf4 27. Rh3 Kf7 28. a4 d5 (28... b6 $15) 29. a5 dxe4 30. fxe4 e5 ( 30... Kg6 $15) 31. Ka2 (31. b4 $11) 31... Ke6 (31... Rc8 $1 $15) 32. Re2 Rg4 33. Kb3 Rff4 34. Rd2 $2 (34. Rhe3 Rxh4 35. Kc4 Kd6 36. b4 Rhg4) 34... Rxe4 $19 35. Rd8 (35. Rhd3 $142) 35... Rxh4 36. Rf3 Rhf4 (36... Re2 $142 37. Rf1 Rhh2) 37. Rh3 Rh4 ({Better is} 37... h4 $19 {Strongly threatening ...Ra4.} 38. Rh8 Rf7) 38. Rhd3 $2 {[%mdl 8192]} (38. Rf3 $1 $11 {and White is okay.}) 38... Rh2 39. Ka3 h4 40. Rh8 Rg4 41. Rxh7 Rxg5 42. Rd8 e4 43. b4 $2 (43. Re8) 43... e3 ( 43... Re5 $142 44. Kb3 e3) 44. Re8 Kf5 {aiming for ...e5.} 45. Rhxe7 {[#]} Re2 $1 {Hoping for ...h3.} 46. Rxe3 {[%mdl 8192] This costs White the game.} (46. Rh7 $17 Rg4 47. Rf7+ Kg6 48. Ree7) 46... Rxe3 47. Rxe3 $17 {KR-KR} Rh5 48. c4 h3 49. Re1 h2 50. Rh1 Kf4 51. b5 Kg3 52. Kb4 Kg2 53. Rd1 h1=Q 54. Rxh1 Kxh1 55. bxa6 bxa6 56. c5 {Black mates.} Rh4+ 57. Kc3 Kg2 58. Kd3 Kf3 {Weighted Error Value: White=0.50/Black=0.25} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "13.5"] [White "Saduakassova, Dinara"] [Black "Zhu, Jiner"] [Result "0-1"] [ECO "D02"] [WhiteElo "2500"] [BlackElo "2462"] [Annotator "TA"] [PlyCount "66"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,65,0,0,0,62,51,62,57,61,53,59,55,58,49,49,0,99,82,89,91,104,97,110, 66,185,189,212,216,215,195,204,183,201,228,214,194,219,159,172,116,109,49,229, 229,29988,29989,29989,29990,29997,0,0,-29999]} 1. d4 Nf6 2. Nf3 e6 3. Bf4 d5 4. e3 c5 5. Nbd2 Nc6 6. c3 Bd6 7. Bg3 O-O 8. Bd3 b6 9. e4 {D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} dxe4 (9... Be7 $11) 10. Nxe4 $14 Nxe4 11. Bxe4 {[#] Strongly threatening dxc5.White is slightly better. } Bb7 12. Qa4 Rc8 13. Rd1 Qe7 14. dxc5 Bxc5 15. b4 Nxb4 (15... f5 $11 16. Bd3 Nxb4 17. cxb4 Bxb4+ 18. Kf1 Rc3) 16. Bxb7 $16 Qxb7 17. cxb4 Qe4+ 18. Kf1 Bxb4 { [#]} 19. h3 $146 {a3 is the strong threat.} (19. h4 {keeps more tension.} Qc2 20. Qxc2 Rxc2 21. h5 Rxa2 22. h6) ({Predecessor:} 19. Qxa7 Rc2 20. Kg1 Rfc8 21. h3 Qe2 22. Kh2 e5 23. Nxe5 Rf8 24. Nf3 Bc5 25. Rhe1 {1-0 (39) Atanasov,A (2449) -Mullick,R (2209) Chess.com INT 2020}) 19... Rc4 ({Better is} 19... Qc2 $1 $14 20. Qb3 Rc3) 20. Kg1 $18 Bd6 21. Qb3 Bxg3 22. fxg3 Rc2 {[%CAl Bc4c2,Bc2a2, Ba2a3][%mdl 32] Black wants to play ...Qe2!} 23. Kh2 Qe2 {[%csl Gc2][%CAl Re2g2]} 24. Rhg1 {And now Nd4 would win.} Rxa2 25. Rd7 h6 26. Qd1 Qf2 27. Nh4 ( 27. Ne5 $18) 27... Ra3 $16 28. Qg4 (28. Qe1 $16 Qxe1 29. Rxe1) 28... Rc8 $2 ( 28... a5 $1 $14) 29. Rgd1 $18 {Hoping for Ng6!} Rcc3 $2 (29... Qf6 $18 30. Qe2 Rf8) 30. Rd8+ Kh7 31. Qe4+ g6 {[#]} 32. R8d7 $2 (32. Qxg6+ $3 {[%mdl 512] mates } fxg6 33. R1d7+ Qf7 34. Rxf7#) 32... Rxg3 $11 {[%csl Ga3][%CAl Rg3h3]} 33. Qb7 $2 {[%mdl 8192]} (33. Qxe6 $11 Rxh3+ 34. Qxh3 Rxh3+ 35. Kxh3) 33... Rxh3# $1 { Black used his chance. Weighted Error Value: White=0.62/Black=0.61} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "13.6"] [White "Yoo, Christopher Woojin"] [Black "Nihal Sarin"] [Result "0-1"] [ECO "D06"] [WhiteElo "2457"] [BlackElo "2620"] [Annotator "Shahid"] [PlyCount "66"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,66,45,41,33,50,33,33,37,38,40,39,21,21,19,21,20,33,0,0,-16,-17,-77, -77,-79,-62,-77,-66,-73,-50,-185,-166,-171,-171,-156,-159,-258,-241,-858,-847, -816,-603,-737,-729,-903,-901,-29978,-822,-1597,-1232,-29976,-29977,-29983, -29984,-29984,-29985,-29985,-29986,-29986,-29987]} 1. d4 d5 2. c4 c5 3. cxd5 Qxd5 4. Nf3 cxd4 5. Nc3 Qa5 6. Nxd4 Nf6 7. g3 e5 8. Nb3 {White is slightly better.} Qc7 9. Bg2 Bb4 10. Bd2 (10. Qd3 {feels hotter.} O-O 11. Bg5 Rd8 12. Qe3 Bxc3+ 13. Qxc3 Qxc3+ 14. bxc3 Nbd7 15. O-O) 10... O-O 11. O-O {Threatening Nb5.} Nc6 12. Rc1 Be6 13. Ne4 Rfd8 {aiming for ...Nxe4.} 14. Nxf6+ gxf6 15. Qe1 {[#]} (15. Bxc6 $11 bxc6 16. e4) 15... Rxd2 $1 $17 16. Nxd2 {Strongly threatening a3.} Qa5 17. Rc3 Bxc3 18. bxc3 Qxc3 19. Qb1 $2 (19. Ne4 Qxe1 20. Rxe1 Bxa2 21. Ra1 Be6 22. Nc5 Bc8 23. Na6) 19... Qxd2 $19 20. Qxb7 {[#]} Rb8 { [%CAl Rb8b7]} 21. Qxc6 Qxa2 22. f4 (22. Qe4 $17 {was necessary.}) 22... Qxe2 23. f5 $2 (23. Qe4 Qxe4 24. Bxe4) 23... Bc4 {Threatens to win with ...Qe3+.} 24. Kh1 Rb2 {And now ...Qxg2+! would win.} 25. Rg1 Bd3 26. g4 h6 27. h4 Kg7 ( 27... Qf2 $142 28. Qa8+ Kg7 29. Qf3 Qxh4+ 30. Qh3 Qxh3+ {[%mdl 64] Overworked Piece} 31. Bxh3 Be4+ 32. Rg2 Rxg2 33. Bxg2 Bxg2+ 34. Kxg2 a5 35. Kh2 a4 36. Kg3 a3 37. Kh4 a2 38. Kh3 a1=Q 39. Kg2 Qe1 40. Kf3 e4+ 41. Kg2 Qh4 42. g5 hxg5 43. Kg1 e3 44. Kg2 e2 45. Kg1 Qg3+ 46. Kh1 e1=Q#) 28. Qc1 Rb1 29. Qc3 Be4 {[%csl Ge4][%CAl Re2g2] Black mates.} 30. Qg3 Qxg2+ 31. Qxg2 Bxg2+ 32. Kxg2 Rxg1+ 33. Kxg1 a5 {Weighted Error Value: White=1.11/Black=0.33} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "13.7"] [White "Gukesh D"] [Black "Yip, Carissa"] [Result "1-0"] [ECO "A13"] [WhiteElo "2578"] [BlackElo "2430"] [Annotator "TA"] [PlyCount "69"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,69,29,27,45,0,41,-1,29,29,37,33,31,28,46,49,51,59,65,66,71,68,77,27, 68,25,89,47,56,53,41,47,107,58,36,38,63,52,136,30,60,0,0,0,0,0,0,-36,-50,-31, -50,-115,0,0,458,462,595,584]} 1. c4 g6 2. Nf3 Bg7 3. d4 e6 4. g3 Ne7 5. Bg2 d5 6. O-O O-O 7. Nc3 Nbc6 8. e3 b6 {A13: English Opening: 1...e6.} 9. b3 $5 { [%mdl 4] An interesting side line.} Ba6 {[#]} 10. Nd2 $146 ({Predecessor:} 10. Qe2 Na5 11. Bb2 c6 12. Qc2 Nb7 13. Nd2 Nd6 14. Ne2 Rc8 15. Rfc1 Nef5 16. Nf4 { 0-1 (37) Pedersen,P (2119)-Fries Nielsen,J (2439) Helsingor 2009}) 10... Na5 { The position is equal.} 11. Bb2 Rc8 12. Qc2 c6 {[%CAl Rd5c4]} 13. Rfd1 Nf5 14. Rac1 Qd7 15. Nf3 Rfd8 16. e4 Ne7 17. c5 bxc5 18. dxc5 (18. Na4 $5 {[%CAl Ra4c5] } Nb7 19. dxc5 $16) 18... Qc7 (18... e5) 19. Na4 (19. e5 Nb7 20. b4) 19... Bxb2 (19... e5 $1 $11 {keeps the balance.}) 20. Qxb2 dxe4 21. Ng5 Rxd1+ 22. Rxd1 Rd8 (22... e3 $14) 23. Re1 (23. Rxd8+ {seems wilder.} Qxd8 24. Qh8+ Kxh8 25. Nxf7+ Kg7 26. Nxd8 Nd5 27. Nxe6+ Kf6 28. Nf8) 23... e3 24. fxe3 Nd5 25. Ne4 Bd3 ( 25... f5 $14 26. Nf6+ Nxf6 27. Qxf6 Bc8) 26. Nf2 (26. Nd6 $16) 26... Ba6 $1 $11 27. Bxd5 (27. Bf3 $14) 27... cxd5 28. Ng4 {Strongly threatening Qf6.} h5 29. Nf6+ Kf8 30. c6 Nxc6 31. Nc5 Bc8 32. Rf1 {[#]} ({White should try} 32. Nh7+ $15 Kg8 33. Nf6+ Kh8 34. Rf1) 32... Qe5 (32... e5 $1 $17 {aiming for ...Qe7.} 33. Qc1 e4) 33. Qf2 {Nfd7+! is the strong threat.} Qc7 {[%mdl 8192] [#]} (33... Qf5 $11) 34. Nfd7+ $1 $18 {[%mdl 576] Discovered Attack} Rxd7 (34... Qxd7 35. Nxd7+ ) 35. Nxe6+ $1 {[%mdl 64] Double Attack. Weighted Error Value: White=0.22/ Black=0.46} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "13.8"] [White "Badelka, Olga"] [Black "Abdusattorov, Nodirbek"] [Result "0-1"] [ECO "A67"] [WhiteElo "2418"] [BlackElo "2634"] [Annotator "TA"] [PlyCount "76"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 21,76,10,8,7,47,43,69,17,22,-9,23,-36,-32,-45,-68,-40,-38,-118,-97,-203, -196,-189,-171,-233,-208,-189,-198,-504,-504,-497,-484,-605,-581,-730,-731, -818,-745,-850,-264,-258,-260,-250,0,0,-7,-1663,-1621,-2637,-2604,-2454,-2356, -12815,-8450,-4782,-2399,-1616,-870]} 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. Nf3 O-O 10. O-O a6 11. Bd3 b5 12. Qe1 c4 13. Bc2 Re8 14. Qg3 (14. Be3 $14) 14... Nc5 $11 15. e5 b4 16. Ne4 (16. Na4 $11) 16... Nxe4 $15 17. Bxe4 Nd7 $36 {[%mdl 2048] Black is more active.} 18. Ng5 Nc5 {[%CAl Rd6e5]} (18... h6 $2 19. Nxf7 $1 {[%mdl 512]} Kxf7 20. Qxg6+ (20. e6+ Kg8 $18) 20... Kf8 21. Qxd6+ Kg8 22. Qxb4 $18) 19. e6 ({White should play} 19. Bc2 $15) 19... fxe6 $17 20. Qh4 {[#]} (20. Qh3 $17 Bd4+ 21. Be3 Bxe3+ 22. Qxe3) 20... Bd4+ $1 $19 ({And not} 20... Nxe4 21. Qxh7+ Kf8 22. Qxg6 $16) 21. Kh1 Ra7 22. Bf3 (22. f5 {might work better.} exf5 23. Bxf5 Bxb2 24. Bxg6 hxg6 25. Bxb2) 22... e5 23. fxe5 dxe5 24. Bg4 $2 (24. Be2 Qxd5 25. Bd2) 24... Bxg4 25. Qxg4 {If White can now play Ne4 this consolidates a bit.} Qxd5 26. a3 b3 27. Bd2 Bxb2 28. Rad1 Bd4 29. Bb4 b2 $2 (29... Nd3 30. Ne4 Rf7) 30. Bxc5 Qxc5 31. Ne4 {[#]} Qc8 ({Don't go for} 31... Qxa3 $2 32. Nf6+ Kh8 33. Nxe8 $18) (31... Qc6 $1 $19 32. Nf6+ Kf8 33. Nxe8+ Rf7) 32. Nf6+ $1 $11 Kh8 33. Qe4 { [%mdl 8192] White does not recover from this.} (33. Nxe8 $11 Qxe8 34. Rxd4 exd4 35. Qxd4+ Rg7 36. Qxb2) 33... Rf8 $19 {Black is clearly winning.} 34. Rxd4 exd4 35. Qxd4 Rg7 36. Qxb2 c3 37. Qb6 c2 38. Rc1 Rgf7 {Weighted Error Value: White=1.11/Black=0.34} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "13.9"] [White "Salimova, Nurgyul"] [Black "Murzin, Volodar"] [Result "1/2-1/2"] [ECO "D02"] [WhiteElo "2395"] [BlackElo "2502"] [Annotator "RC"] [PlyCount "94"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:03]} g6 { [%emt 0:00:02]} 3. Nbd2 {[%emt 0:00:02]} d5 {[%emt 0:00:30]} 4. e3 {[%emt 0:00: 07]} Bg7 {[%emt 0:00:01]} 5. b4 {[%emt 0:00:02]} O-O {[%emt 0:00:01]} 6. c4 { [%emt 0:00:26]} c6 {[%emt 0:00:06]} 7. a4 {[%emt 0:00:23]} Bf5 {[%emt 0:00:07]} 8. Be2 {[%emt 0:00:46]} Nbd7 {[%emt 0:00:05]} 9. O-O {[%emt 0:00:13]} a5 { [%emt 0:00:46]} 10. b5 {[%emt 0:00:34]} Ne4 {[%emt 0:00:17]} 11. Nxe4 {[%emt 0: 00:37]} dxe4 {[%emt 0:02:31]} 12. Nd2 {[%emt 0:00:09]} e5 {[%emt 0:00:20]} 13. d5 {[%emt 0:00:30]} cxd5 {[%emt 0:00:03]} 14. cxd5 {[%emt 0:00:00]} Nb6 { [%emt 0:00:01]} 15. g4 {[%emt 0:00:32]} Bc8 {[%emt 0:00:10]} 16. Ba3 {[%emt 0: 00:10]} Nxd5 {[%emt 0:00:05]} 17. Nxe4 {[%emt 0:01:02]} Nb4 {[%emt 0:00:06]} 18. Qxd8 {[%emt 0:01:07]} Rxd8 {[%emt 0:00:02]} 19. Rac1 {[%emt 0:00:18]} b6 { [%emt 0:00:26]} 20. Rc7 {[%emt 0:00:51]} Be6 {[%emt 0:01:03]} 21. Ng5 {[%emt 0: 00:39]} Bd5 {[%emt 0:00:29]} 22. e4 {[%emt 0:01:28]} Bh6 {[%emt 0:02:50]} 23. exd5 {[%emt 0:00:29]} Bxg5 {[%emt 0:00:03]} 24. Bxb4 {[%emt 0:00:32]} axb4 { [%emt 0:00:03]} 25. Ra1 {[%emt 0:00:26]} b3 {[%emt 0:00:25]} 26. Rb1 {[%emt 0: 00:33]} Rxa4 {[%emt 0:00:10]} 27. Rxb3 {[%emt 0:00:02]} e4 {[%emt 0:01:11]} 28. Bc4 {[%emt 0:00:12]} Rd6 {[%emt 0:00:17]} 29. Rc3 {[%emt 0:00:09]} Bf6 { [%emt 0:00:07]} 30. Rc2 {[%emt 0:00:03]} Bd4 {[%emt 0:00:04]} 31. Rc6 {[%emt 0: 00:03]} Bc5 {[%emt 0:00:09]} 32. Kg2 {[%emt 0:00:03]} Kf8 {[%emt 0:00:02]} 33. Bb3 {[%emt 0:00:06]} Rb4 {[%emt 0:00:06]} 34. R2xc5 {[%emt 0:00:07]} bxc5 { [%emt 0:00:00]} 35. Rxd6 {[%emt 0:00:02]} Rxb3 {[%emt 0:00:01]} 36. b6 { [%emt 0:00:03]} c4 {[%emt 0:00:05]} 37. Rc6 {[%emt 0:00:02]} c3 {[%emt 0:00:05] } 38. d6 {[%emt 0:00:12]} Ke8 {[%emt 0:00:01]} 39. b7 {[%emt 0:00:06]} Kd7 { [%emt 0:00:18]} 40. Rxc3 {[%emt 0:00:07]} Rxb7 {[%emt 0:00:01]} 41. Rh3 { [%emt 0:00:06]} Kxd6 {[%emt 0:00:07]} 42. Rxh7 {[%emt 0:00:02]} Ke6 {[%emt 0: 00:05]} 43. h4 {[%emt 0:00:04]} Rb2 {[%emt 0:00:02]} 44. Kg3 {[%emt 0:00:02]} Rb3+ {[%emt 0:00:04]} 45. Kg2 {[%emt 0:00:02]} Rb2 {[%emt 0:00:07]} 46. Kg3 { [%emt 0:00:01]} Rb3+ {[%emt 0:00:00]} 47. Kg2 {[%emt 0:00:01]} Rb2 {[%emt 0:00: 01]} 1/2-1/2 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "13.10"] [White "Liang, Awonder"] [Black "Khademalsharieh, Sarasadat"] [Result "1-0"] [ECO "D02"] [WhiteElo "2592"] [BlackElo "2494"] [Annotator "TA"] [PlyCount "59"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,59,0,10,12,18,12,22,16,27,20,43,37,32,28,41,39,59,33,49,16,83,81,104, 100,99,79,91,74,127,125,169,181,179,78,107,128,159,163,152,160,201,121,521,534, 610,606,597,585,543,327,1006,1003]} 1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. Nf3 Nc6 5. Nbd2 cxd4 6. exd4 {D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2.. .Nf6 3 Bf4.} Bf5 7. c3 e6 8. Qb3 {The position is equal.} Bd6 {The modern move. } 9. Qxb7 Bxf4 10. Qxc6+ Kf8 11. Qa6 $5 {[%mdl 4] Leaves trodden paths.} g6 { [#]} 12. Bd3 $146 ({Predecessor:} 12. g3 Bh6 13. Bd3 Ne4 14. Bxe4 dxe4 15. Ne5 e3 16. fxe3 Qd5 17. Kf2 f6 18. c4 {0-1 (36) Hoang,T (2404)-Khademalsharieh,S (2494) Tornelo INT 2020}) 12... Ne4 13. Nb3 (13. g3 $5 {[%CAl Rg3f4]} Bxd2+ 14. Nxd2 $14) 13... h5 14. g3 Bh6 (14... Bd6 $11) 15. Ne5 $16 Kg7 16. f3 Nd6 17. Bxf5 Nxf5 18. O-O $40 {[%mdl 128] White is out for blood.} h4 ({Black should try} 18... Qb6 19. Qe2 f6) 19. g4 $1 {[%CAl Rg4f5]} Be3+ {[#]} 20. Kg2 $1 Qg5 { [#]} 21. Nc5 (21. Kh3 $1 $18 {and White stays clearly on top.}) 21... Rae8 22. Ncd3 {Black must now prevent f4.} Bf4 23. Rf2 ({Stronger than} 23. Qxa7 Re7 $15 ) 23... Ne3+ 24. Kh1 Re7 25. Rg1 Bg3 $2 {[%mdl 8192] This costs Black the game. } 26. f4 $18 Qf6 27. Rf3 {[%mdl 64] Double Attack} Nc4 28. Nxc4 (28. hxg3 hxg3+ 29. Kg2 Rh2+ 30. Kf1 Nd2+ 31. Ke1 Ne4 $16) 28... dxc4 29. Nc5 {Hoping for Ne4.} Bxf4 $2 (29... g5 30. f5 (30. hxg3 hxg3+ 31. Kg2 gxf4 $11) 30... Ree8) 30. Ne4 {Weighted Error Value: White=0.24/Black=0.57} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "14.1"] [White "Keymer, Vincent"] [Black "Khademalsharieh, Sarasadat"] [Result "1-0"] [ECO "D31"] [WhiteElo "2591"] [BlackElo "2494"] [Annotator "TA"] [PlyCount "139"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,139,28,6,16,7,6,0,23,23,148,152,150,153,165,169,147,72,167,154,176, 172,189,185,187,184,204,200,200,199,200,195,200,199,243,239,229,212,208,224, 213,226,227,212,225,191,195,195,206,210,216,212,213,206,216,181,209,216,212, 216,208,209,201,212,227,174,200,200,200,200,200,200,242,200,200,200,228,195, 200,200,200,200,224,240,236,221,242,234,234,224,234,246,245,224,239,234,235, 242,246,243,229,224,245,204,230,221,567,556,574,568,635,628,639,518,622,620, 625,617,541,544,503,405,986,858,1290,1134,5096,4133,1821,1149]} 1. c4 e6 2. Nc3 d5 3. d4 Bb4 4. cxd5 exd5 5. Bf4 c6 6. e3 Bd6 7. Bg3 Ne7 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6.} 8. Nf3 O-O 9. Qb3 $5 {[%mdl 4] [#] An interesting side line.} Qc7 $146 {The position is equal.} ({Predecessor:} 9... a5 10. Bd3 Na6 11. a3 Nc7 12. Na4 Rb8 13. Qc2 g6 14. Qd2 Bf5 15. Be2 Ne8 { 1-0 (60) Fodor,T (2495)-Sowray,P (2308) Birmingham 2015}) 10. Bd3 Bf5 (10... h6 $11) 11. Bxd6 $16 Qxd6 12. Bxf5 ({Not} 12. Qxb7 $2 Bxd3 13. Qxa8 Qc7 $19) 12... Nxf5 13. Qxb7 Nd7 14. Qb3 ({White should try} 14. Qa6) 14... Qg6 (14... Rab8 $16 {was worth a try.} 15. Qc2 Qg6) 15. O-O $18 Rab8 16. Qa3 Rb7 17. b3 Re8 18. Rac1 h5 19. Qa6 Reb8 20. Ne2 Ne7 21. Nf4 Qh6 22. Nd3 h4 23. h3 Rc7 24. Nfe5 Rb6 25. Qa3 Nxe5 26. Nxe5 Nf5 27. Rc3 Nd6 {intending ...Nb5.} 28. Qc1 Ne4 29. Rc2 Qd6 30. Nd3 Qg6 31. Qd1 Ng5 32. Nf4 Qf5 33. Rc5 Ne6 34. Nxe6 Qxe6 35. Qh5 Qf6 36. Rfc1 Rd7 37. Qg4 Rd8 38. Qf3 {Qxf6 is the strong threat.} Qxf3 39. gxf3 { [%mdl 4096] Endgame KRR-KRR} Rd6 40. Ra5 Rd7 41. f4 f5 42. Kf1 Kf7 43. Ke2 Kf6 44. Rcc5 Re7 45. Kf3 Rd7 46. Ra4 Ke6 47. Rca5 Rbb7 48. Ra6 Kd6 49. b4 Rdc7 50. a3 Ke7 51. R4a5 Kd7 52. Ke2 Ke7 53. Kd3 Kd7 54. Kc3 Kc8 55. Kb3 Kb8 56. Rc5 Rb6 57. Raa5 a6 58. Rc1 Rb5 $2 {[#]} (58... g6 {is more resistant.} 59. Rac5 Kc8) 59. Rxa6 Kb7 60. Ra5 Rxa5 61. bxa5 {KR-KR} Ka6 62. Ka4 g6 63. Rg1 Rg7 64. Kb4 Rb7+ 65. Kc5 Rb2 66. Rxg6 Rxf2 (66... Rc2+ $142 67. Kb4 Rc4+ 68. Kb3 Kb5) 67. Rxc6+ {White is clearly winning.} Kxa5 68. Rh6 Rf3 69. Rxh4 Rxe3 70. Kxd5 { Weighted Error Value: White=0.08/Black=0.22} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "14.2"] [White "Murzin, Volodar"] [Black "Liang, Awonder"] [Result "1-0"] [ECO "B10"] [WhiteElo "2502"] [BlackElo "2592"] [Annotator "TA"] [PlyCount "113"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,113,0,10,-8,19,0,30,29,62,26,29,21,33,8,50,27,70,70,72,72,72,54,100, 93,88,87,90,49,56,26,70,74,83,60,67,33,66,46,64,53,55,79,106,91,118,110,89,100, 206,180,216,218,252,205,206,215,368,213,209,199,221,217,297,290,310,314,299, 294,277,270,301,249,241,217,224,215,272,281,311,319,283,180,363,363,347,346, 500,481,1409,1379,1487,1448,1393,1360,1546,1496,1465,1462,1350,1342,1577,1446, 4935,4966,1572,1012]} 1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. Ne5 Nc6 5. Bb5 Bd7 6. Bxc6 {B10: Caro-Kann: 2 d3 and 2 c4.} bxc6 (6... Bxc6 {keeps more tension.} 7. d4 e6 8. O-O Bd6 9. Bf4 Ne7) 7. O-O Nf6 8. d4 {White has an edge.} g6 9. Bg5 Bg7 10. Nd2 {[%CAl Bb1d2,Bd2b3,Bb3c5][%mdl 32]} O-O 11. c3 h6 12. Bh4 Rb8 {[#]} 13. Nb3 $146 ({Predecessor:} 13. b4 a5 14. a3 Qc8 15. Re1 Bf5 16. f3 Re8 17. Nb3 axb4 18. axb4 g5 19. Bf2 {1-0 (25) Vysochin,S (2503)-Streltsov,A (2192) Chess.com INT 2020}) 13... Ne4 14. f3 Nd6 15. Qe2 Re8 16. Nc5 Bxe5 17. dxe5 Nb7 18. Nxd7 Qxd7 19. Qe3 Kg7 20. Qxa7 c5 21. Qa6 Nd8 22. Qe2 (22. b3 {is more complex.} Nc6 23. Qe2 d4 24. Qc4 dxc3 25. Rfd1) 22... c4 23. Kh1 Ne6 24. f4 { Black must now prevent f5.} Nc5 25. f5 {Strongly threatening e6!} gxf5 { White leaves nothing to chance now.} 26. Qh5 Qe6 27. Rxf5 {Raf1 is the strong threat.} Qg6 {[#]} 28. Qf3 $36 {[%mdl 2048] White has strong initiative.} Rxb2 (28... Ne4 $16 {might work better.}) 29. Rf1 $18 Ne6 30. Rxf7+ {[%mdl 64] Double Attack} Kg8 31. Bxe7 Rb1 {[#] Hoping for ...Rxf1+.} 32. Rf6 $1 Rxf1+ 33. Qxf1 Qd3 {[#]} 34. Bb4 ({Weaker is} 34. Qxd3 cxd3 35. Bb4 (35. Rxe6 $2 d2 $19) 35... Ng5 $17) 34... Ng5 35. h4 Qxf1+ 36. Rxf1 {[%mdl 4096] Endgame KRB-KRN} Ne4 {next ...Ng3+ is good for Black.} 37. Kh2 Rxe5 38. a4 {[%CAl Ba2a4,Ba4a5] [%mdl 32]} Re6 39. a5 Kg7 40. Rd1 Nf6 41. Bc5 Ra6 42. Bb6 Kg6 43. Bd8 Ng4+ 44. Kg1 Ne3 45. Re1 Nf5 (45... d4) 46. g4 Ng3 47. Re5 d4 (47... Ne4 {was necessary. } 48. Rxd5 Nxc3) 48. cxd4 {White is clearly winning.} Rc6 (48... c3 $142 49. Kg2 c2) 49. Kg2 c3 50. Kxg3 {KRB-KR} c2 51. Re1 c1=Q 52. Rxc1 Rxc1 53. Kf4 Kf7 54. Ke5 Ke8 55. Bb6 Ke7 56. Bc5+ Kd7 57. a6 {Weighted Error Value: White=0.13/ Black=0.28} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "14.3"] [White "Abdusattorov, Nodirbek"] [Black "Salimova, Nurgyul"] [Result "0-1"] [ECO "B13"] [WhiteElo "2634"] [BlackElo "2395"] [Annotator "TA"] [PlyCount "82"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,82,10,16,11,23,8,8,12,6,8,17,16,23,21,18,10,9,9,8,-16,-12,-14,-9,-24, -12,-12,-3,-33,-38,-30,-35,-47,0,-35,-53,-37,0,-190,-191,-259,-117,-114,-66, -120,-112,-133,-67,-67,-61,-89,-89,-110,-32,-125,-97,-424,-316,-379,-403,-350, -325,-293,-153,-366,-407,-388,-399,-345,-222,-291,-291,-1029,-1011]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. c3 Bg4 6. Qb3 Qc7 7. h3 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} Bh5 8. Ne2 Nc6 9. Bf4 {The position is equal.} Qd7 10. Nd2 e6 11. O-O Be7 {[#]} 12. Be3 $146 ({ Predecessor:} 12. Rfe1 O-O 13. a4 a6 14. Bg3 Bg6 15. Nf4 Rac8 16. Nxg6 hxg6 17. Nf3 Rfd8 18. Re2 {1/2-1/2 (58) Zhalmakhanov,R (2393)-Mchedlishvili,M (2570) Lichess.org INT 2020}) 12... Bg6 13. Nf4 Bxd3 14. Nxd3 O-O 15. Ne5 Qc7 16. f4 Rab8 17. a4 a6 18. Qd1 b5 19. Qe2 (19. axb5 {keeps more tension.} axb5 20. Qe2 Rfc8 21. Ra6 Rb6 22. Rxb6 Qxb6 23. f5) 19... bxa4 20. Qxa6 Nxe5 21. fxe5 Nh5 22. Rxa4 Rxb2 23. c4 Ng3 24. Re1 (24. cxd5 $1 $11 {and White has nothing to worry.} exd5 25. Rf3) 24... Nf5 25. Nf1 (25. Nf3 $142) 25... dxc4 (25... Bh4 $19 26. g3 Bxg3 27. Nxg3 Nxg3) 26. Rxc4 $17 Qd8 {And now ...Bh4 would win.} 27. Bf2 (27. Bc1 $15 Rb3 28. Rd1) 27... Bh4 $36 {[%mdl 2048] Keeping White busy.} ( {But not} 27... Qd5 28. Ne3 $11) 28. g3 {[#]} Be7 (28... Qd5 $1 $17 29. Qc6 { [#]} Nxg3 $1 {[%mdl 576] Decoy} 30. Nxg3 Bxg3 31. Bxg3 Rg2+ {[%mdl 64] Double Attack} 32. Kh1 Qxc6 33. Rxc6 Rxg3) 29. Qc6 $15 h5 30. Qf3 g6 31. Rec1 Qa5 ({ Better is} 31... Bg5 $17 32. R1c3 Rb1) 32. Rc7 (32. g4 $15 hxg4 33. hxg4) 32... Bg5 33. g4 $2 {[%mdl 8192]} (33. Qc3 $17 Qb6 34. Rc6) 33... hxg4 34. hxg4 { aiming for R1c5.} Bxc1 35. Rxc1 {[#]} Qd8 $1 36. Qf4 Rxf2 37. Qxf2 $2 {This costs White the game.} (37. Kxf2 $17 Nxd4 38. Nd2 Qh4+ 39. Ke3) 37... Qg5 $19 { [%mdl 64] Double Attack} ({Not} 37... Nxd4 $2 38. Rd1 $18) 38. Rc4 Qxg4+ 39. Qg2 Qxg2+ 40. Kxg2 Rd8 41. Nh2 $2 (41. Kf2) 41... Ne3+ {[%mdl 64] Double Attack. Weighted Error Value: White=0.78/Black=0.27} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "14.4"] [White "Yip, Carissa"] [Black "Badelka, Olga"] [Result "1-0"] [ECO "A30"] [WhiteElo "2430"] [BlackElo "2418"] [Annotator "TA"] [PlyCount "77"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 18,77,0,0,30,29,68,8,45,46,61,53,49,54,60,35,27,41,49,42,77,35,35,28,33, 25,35,41,46,29,64,45,52,16,19,19,26,0,23,0,0,10,166,110,159,172,177,145,140, 107,197,193,197,177,890,893,1104,1343,962,1104,29944,5318]} 1. Nf3 c5 2. c4 Nf6 3. b3 g6 4. Bb2 Bg7 5. g3 b6 6. Bg2 Bb7 7. O-O O-O 8. d4 cxd4 9. Bxd4 Nc6 10. Bb2 d6 {A30: Symmetrical English: Double Fianchetto and Hedgehog.} 11. Nc3 Rc8 {[#]} 12. Rc1 $146 (12. Qd2 $14) ({Predecessor:} 12. Re1 Nd7 13. Qd2 Nde5 14. Nxe5 Bxe5 15. Nd5 e6 16. Ne3 h5 17. Bxe5 dxe5 18. Qxd8 Rfxd8 {1/2-1/2 (39) Moreno Trujillo,A (2521)-Espinosa Aranda,A (2480) Madrid 2019}) 12... Nd7 { The position is equal.} (12... Ne4 $5) 13. Qd2 Nde5 14. Rfd1 Nxf3+ 15. Bxf3 Qd7 16. Nd5 Ne5 17. Bg2 h5 18. f4 {[#] Black must now prevent Bxe5.} Bxd5 19. Bxd5 {Hoping for Bxe5.} Ng4 20. Bxg7 Kxg7 21. Bf3 Nf6 22. Kg2 Qe6 23. Qd4 Rh8 24. h3 Rc5 25. e4 Rhc8 26. Re1 {Threatens to win with e5.} b5 {[%CAl Rb5c4]} 27. e5 ( 27. g4 $5) 27... dxe5 28. fxe5 Nh7 {[#] And now ...Ng5 would win.} 29. Bd5 Qb6 (29... Qa6 $1 $11) 30. e6+ (30. b4 $18 R5c7 31. c5) 30... Nf6 31. exf7 bxc4 32. bxc4 Rd8 {[%CAl Rd8d5]} 33. Rcd1 Qc7 (33... Ra5 $16) 34. Re6 $18 {Rf1 is the strong threat.} Ra5 35. Rd2 $36 {[%mdl 2048] Strongly threatening Rf2. White is in control.} Rd6 $2 (35... Ra3) 36. Qe5 Rdxd5 37. Qxc7 Rxd2+ 38. Kf1 Rdxa2 39. f8=Q+ {Weighted Error Value: White=0.17/Black=0.50} (39. f8=B+ $142 Kxf8 40. Qd8+ Kg7 41. Qxe7+ {[%mdl 64] Double Attack} Kg8 42. Rxf6 Rf5+ 43. Rxf5 gxf5 44. Qe6+ Kg7 45. c5) 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "14.5"] [White "Nihal Sarin"] [Black "Gukesh D"] [Result "1-0"] [ECO "B22"] [WhiteElo "2620"] [BlackElo "2578"] [Annotator "TA"] [PlyCount "67"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 26,67,29,7,11,0,14,-32,-47,-55,-41,-61,-57,-83,-71,-72,-87,-77,-77,-86, -47,-45,-64,-64,0,0,27,35,39,29,41,22,105,106,1057,836,1042,1029,1356,1025, 29974,29975,29973,29975]} 1. e4 c5 2. Nf3 Nc6 3. c3 Nf6 4. e5 Nd5 5. Bc4 e6 6. O-O d6 7. d4 cxd4 8. cxd4 Be7 9. Qe2 O-O 10. Nc3 dxe5 11. dxe5 Nxc3 12. bxc3 Bd7 {12...Qc7 is setting a new trend.} 13. Bd3 Qc7 14. Qe4 {[%csl Gd3][%CAl Re4h7]} g6 {B22: Sicilian: 2 c3.} 15. Bh6 Rfd8 16. Rad1 Be8 {Black is slightly better.} 17. Qf4 Rd5 18. Be4 {[#]} Rc5 $146 ({Predecessor:} 18... Rxd1 19. Rxd1 Rd8 20. Rxd8 Nxd8 21. Qd2 Bb5 22. Bg5 Bc6 23. Bxc6 Nxc6 24. h3 Bxg5 25. Qxg5 { 0-1 (42) Sparsh,K (1868)-Soham,D (2160) Ahmedabad 2019}) 19. Bxc6 Bxc6 20. Ng5 Bf8 21. Bxf8 Rxf8 22. Rfe1 h6 23. Ne4 Bxe4 24. Rxe4 Kh7 ({Better is} 24... h5 $15) 25. h4 $11 Rd5 26. Rxd5 exd5 {[%mdl 4096] Endgame KQR-KQR} 27. Re3 Qc4 28. Qf6 $36 {[%mdl 2048] And now e6 would win. White fights for an advantage.} Qxa2 $2 {[#]} (28... d4 $1 $11 29. Qf4 (29. cxd4 Qxd4) 29... Qxa2 30. cxd4 Qb1+ 31. Kh2 Qf5 32. Qxf5 gxf5) 29. Rf3 $1 $16 Qb1+ $2 {[%mdl 8192] Loses the game.} ( 29... Kg8 $16) 30. Kh2 $18 Qb6 {[#]} 31. e6 $1 Qd6+ 32. g3 Qc6 {[#]} 33. Qxf7+ $1 {[%mdl 576] Promotion} Rxf7 34. exf7 {Weighted Error Value: White=0.07/ Black=0.71} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "14.6"] [White "Zhu, Jiner"] [Black "Yoo, Christopher Woojin"] [Result "0-1"] [ECO "B40"] [WhiteElo "2462"] [BlackElo "2457"] [Annotator "TA"] [PlyCount "112"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,112,32,0,0,0,0,0,22,-7,0,0,0,0,0,-6,0,-6,-8,-9,-8,-5,0,0,0,-13,-3, -27,-19,-23,-35,-52,-23,-95,-104,-89,-85,-108,0,0,0,-3,0,0,0,0,0,0,0,0,0,0,0,0, 0,-15,-22,-28,-20,-16,-27,-22,-24,-27,-19,-33,-45,-178,-178,-178,-178,-205, -118,-155,-159,-137,0,0,0,0,0,0,0,-8,-8,-27,-27,-27,-27,-29964,-29965,-29961, -29964,-5611,-4627,-29971,-29971,-29970,-29968,-29976,-29977,-29977,-29978, -12829,-11247]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bd3 (6. e5 $5 {[%CAl Re5f6]} Nd5 7. Bd2 $14) 6... d6 {B40: Sicilian: 2...e6, Unusual lines.} 7. O-O O-O 8. Bd2 e5 {The position is equal.} 9. Nb3 Be6 {[#]} 10. a3 $146 ({Predecessor:} 10. Kh1 Nbd7 11. f4 exf4 12. Rxf4 Ne5 13. Nd4 Ng6 { 1/2-1/2 (13) Vratislavsky,I (1841)-Sveda,J (1944) Czech Republic 2006}) 10... Bxc3 11. Bxc3 Nbd7 12. Bb4 Qc7 13. Qe2 a5 14. Bd2 a4 15. Nc1 d5 $36 {[%mdl 2048] Black has the initiative.} 16. exd5 Bxd5 17. Bb4 Rfc8 18. f3 Nc5 { [%CAl Bd7c5,Bc5e6,Be6d4][%mdl 32]} 19. Bf5 Be6 20. Bxe6 Nxe6 21. Nd3 (21. Bc3 $1 $11 {keeps the balance.}) 21... Qxc2 $17 22. Qxc2 Rxc2 23. Bc3 Nd4 (23... Nd5 $1 $17 24. Bxe5 f6) 24. Rf2 $11 Rxf2 25. Kxf2 Nd5 26. Bxd4 exd4 {[%mdl 4096] Endgame KRN-KRN} 27. Rc1 Ne3 28. Rc7 b5 29. Rd7 Rc8 30. Rxd4 Nf5 31. Rd5 Rc2+ 32. Ke1 {[%CAl Rd5d8]} g6 33. Rxb5 Rxg2 34. Rb4 Rxh2 35. Rxa4 h5 36. Nf2 Rg2 37. Kf1 Ne3+ 38. Ke2 {[#]} (38. Ke1 $1 $15) 38... Nd1 $1 $19 {[%mdl 512]} 39. Kxd1 Rxf2 {[%mdl 64] Double Attack. KR-KR} 40. Rb4 Rxf3 (40... g5 $1 $19 41. a4 h4) 41. Ke2 {[#]} Rh3 42. a4 Rh1 ({Better is} 42... Rh2+ $17 43. Ke3 Rh1 ) 43. Rb3 $11 {Threatens to win with a5.} h4 $1 44. Kf2 $1 h3 45. Kg3 f5 { ...g5 is the strong threat.} 46. a5 g5 47. a6 {Strongly threatening a7.} f4+ 48. Kf2 $1 {aiming for a7.} ({Don't go for} 48. Kg4 $2 h2 $19) 48... h2 $1 { And now ...Rc1 would win.} 49. Rb8+ $2 {[%mdl 8192]} (49. Kg2 $11 Ra1 50. Rb8+ Kg7 51. Rb7+ Kf8 52. Rb8+ Ke7 53. Rb7+ Kd6 54. Kxh2) 49... Kg7 50. Rb7+ Kg6 51. Rb6+ Kf5 {( -> ...Rf1+!)} 52. Kg2 {[#]} f3+ $1 53. Kxh1 f2 54. Rb5+ Kf4 55. Rb4+ Ke3 56. Rb3+ Ke2 {Weighted Error Value: White=0.29/Black=0.09} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "14.7"] [White "Mendonca, Leon Luke"] [Black "Saduakassova, Dinara"] [Result "1-0"] [ECO "E15"] [WhiteElo "2549"] [BlackElo "2500"] [Annotator "TA"] [PlyCount "99"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,99,23,30,0,0,0,0,0,3,0,17,0,0,-6,0,0,0,0,86,-22,-15,-28,0,-30,-46, -23,-37,-50,-56,-44,-37,-31,-31,-31,-31,-31,0,0,3,-20,8,7,6,10,13,12,49,47,60, 9,52,47,65,65,129,112,124,121,129,128,124,94,141,66,141,66,66,66,60,47,47,47, 114,53,452,445,552,574,482,422,388,376,811,277,500,482,2504,2289,29981,29981]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. Qc2 Bb7 6. Bg2 c5 7. d5 {E15: Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations.} exd5 8. cxd5 Nxd5 9. O-O {The position is equal.} Be7 10. Rd1 Nc6 {The main line 10. ..Nc6 scores better than 10...Qc8.} 11. a3 (11. Rxd5 $2 Nb4 $17) 11... Nc7 12. Nc3 O-O 13. Bf4 Ne6 14. e3 {[#]} d6 $146 {[#]} (14... Nxf4 $11 {keeps the balance.} 15. gxf4 d6) ({Predecessor:} 14... Nxf4 15. exf4 h6 16. Rd2 Bf6 17. Rad1 Bxc3 18. bxc3 Qc8 19. Nh4 d5 20. Rxd5 Ne7 {1-0 (31) Matlakov,M (2692) -Fier,A (2551) Sharjah 2019}) 15. Nd5 (15. Bxd6 $1 $16 Bxd6 16. Nb5) 15... Nxf4 $11 16. Nxf4 Re8 17. Rd2 Bf8 18. Rad1 Rb8 19. h4 h6 20. h5 Ne5 21. Nxe5 Rxe5 22. Qa4 Bxg2 23. Kxg2 b5 24. Qxa7 Qc8 {...Qc6+ is the strong threat.} 25. Qa5 Qb7+ 26. Kg1 b4 {White must now prevent ...Ra8.} 27. Qa4 bxa3 28. Qxa3 d5 ( 28... Qf3 {with more complications.} 29. Qd3 Ree8 30. Qf1 Rb3 31. Ra1 Reb8) 29. Rxd5 Rxd5 30. Rxd5 (30. Nxd5 $14 Qxb2 31. Qxb2 Rxb2 32. Kg2) 30... Qxb2 (30... Ra8 $5 {[%CAl Ra8a3]} 31. Qd3 Qxb2 $11) 31. Qxb2 Rxb2 $14 {[%mdl 4096] Endgame KRB-KRN} 32. Rd8 Rb6 $6 (32... c4 $14 33. g4 (33. Nd5 f6) (33. Rc8 Rb5 34. Rxc4 Bd6) 33... Rb5) 33. Rc8 $16 (33. e4) 33... g6 34. hxg6 fxg6 35. Nd5 Re6 36. f4 h5 37. Kf2 (37. e4 $16) 37... Kf7 (37... Ra6 $1 $14) 38. Kf3 (38. Rc7+ $16 Ke8 39. e4) 38... Ra6 $14 39. e4 Ra3+ 40. Ne3 Be7 41. e5 Ke6 {[#]} (41... Rd3 $14) 42. Rc6+ ({White should try} 42. Rh8 $1 $16) 42... Kd7 $2 {[%mdl 8192] This costs Black the game.} (42... Kf7 $14) 43. Rxg6 $18 c4 {Threatens to win with . ..Bc5.} 44. Ke4 c3 45. f5 Ra4+ 46. Kd3 Ra5 $2 (46... Bc5 47. Nc2 h4 48. gxh4 ( 48. Kxc3 hxg3 49. Rxg3 Rf4 $16) 48... Rxh4) 47. f6 $2 (47. e6+ Kc7 48. f6 Bxf6 49. Rxf6) 47... Bf8 $2 (47... Rxe5 {was necessary.} 48. Rg7 {[%mdl 64] Pin} Ke6 ) 48. Rg8 Bh6 (48... Bc5 $142 49. f7 Ke6) 49. Nf5 Rxe5 50. Nxh6 {Weighted Error Value: White=0.28/Black=0.64} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "14.8"] [White "Praggnanandhaa R"] [Black "Mammadzada, Gunay"] [Result "1-0"] [ECO "D45"] [WhiteElo "2608"] [BlackElo "2443"] [Annotator "TA"] [PlyCount "63"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,63,0,0,53,53,51,42,44,54,67,64,67,64,70,63,106,100,100,101,109,105, 107,107,109,102,109,107,156,158,230,221,211,222,245,243,229,208,217,104,302, 297,292,269,527,523,518,304,304,295,29997,29998]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Be2 Bd6 {6...Bd6 is better than 6...dxc4.} 7. b3 O-O 8. Bb2 e5 {D45: Semi-Slav: 5 e3.} (8... b6 $11) 9. dxe5 $14 Nxe5 10. cxd5 cxd5 { White is slightly better.} 11. O-O ({Don't play} 11. Nxd5 Nxd5 12. Nxe5 (12. Bxe5 Qa5+ 13. Kf1 Bxe5 $15) 12... Qa5+ 13. Kf1 (13. Qd2 $2 Bb4 $19) 13... Bxe5 $17) 11... Be6 12. Nb5 Nxf3+ 13. Bxf3 {[#]} Be7 $146 ({Predecessor:} 13... Bb8 14. Rc1 a6 15. Nd4 Qd6 16. g3 Ba7 17. Qd3 Rac8 18. Rfd1 Nd7 19. Rxc8 Rxc8 20. Nxe6 fxe6 {1-0 (29) Vedder,R (2336)-Craig,G (2099) Chess.com INT 2020}) 14. Rc1 a6 15. Nc7 {Threatens to win with Bxf6.} Rc8 {[#]} 16. Nxd5 Bxd5 (16... Nxd5 17. Rxc8) 17. Rxc8 {[%mdl 64] Overworked Piece} Qxc8 18. Bxd5 Nxd5 19. Qxd5 Qc2 20. Bd4 b5 $2 (20... Qc7) 21. Qb7 Ba3 (21... Re8 $16 {was worth a try.} 22. Qxa6 b4) 22. Qxa6 $18 b4 23. Qd6 Qxa2 24. Qe5 {[%csl Gd4][%CAl Re5g7] [#]} f6 25. Qe6+ Kh8 26. Qe7 $40 {[%mdl 128] Black is in trouble.} (26. Qc4 $18 { and White stays clearly on top.}) 26... Kg8 $2 {Black cannot hold the game after this.} (26... Rg8 $16) 27. Bc5 {[%csl Gc5][%CAl Re7f8]} Ra8 28. Qb7 { Qd5+ would kill now.} ({Weaker is} 28. Bxb4 Qxb3 29. Bxa3 (29. Ra1 $2 Qb2 $19) 29... Qxa3 $16) 28... Rd8 (28... Bb2 {was necessary.} 29. Qxb4 h6) 29. Be7 Re8 30. Qd5+ Kh8 31. Qf7 {[%CAl Rf7e8]} Ra8 (31... Rg8 $18 32. Bxf6 Bb2) 32. Bf8 { [%csl Gf7][%CAl Rf8g7] Weighted Error Value: White=0.20/Black=0.82} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "14.9"] [White "Bjerre, Jonas Buhl"] [Black "Shuvalova, Polina"] [Result "1-0"] [ECO "C77"] [WhiteElo "2542"] [BlackElo "2489"] [Annotator "TA"] [PlyCount "47"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 20,47,29,11,21,14,16,13,18,19,17,17,17,15,19,18,16,12,15,11,60,65,65,62, 62,61,674,667,1279,1279]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 d6 7. c3 O-O 8. Re1 h6 9. Nbd2 {[%CAl Bb1d2,Bd2f1,Bf1g3][%mdl 32]} Re8 { has lost popularity (9...b5).} 10. Nf1 Bf8 11. Ng3 b5 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines.} 12. Bc2 d5 13. exd5 Qxd5 {The position is equal.} 14. d4 Bg4 15. Bb3 Qd7 {With the idea ...exd4.} 16. h3 Bxf3 17. Qxf3 { Threatens to win with dxe5.} exd4 {[#]} 18. Bxh6 $1 dxc3 19. bxc3 {[#] next Bg5 is good for White.} Ne5 $146 {[#]} (19... Rxe1+ {looks sharper.} 20. Rxe1 Re8 21. Rd1 Ne5 22. Qb7 Qc8) ({Predecessor:} 19... Na5 20. Rxe8 Qxe8 21. Bc2 Qc6 22. Ne4 Re8 23. Nxf6+ Qxf6 24. Qxf6 gxf6 25. Bf4 Nc4 {1/2-1/2 (71) Lu,S (2570)-Zhang,P (2570) China 2015}) 20. Rxe5 Rxe5 21. Qxa8 gxh6 22. Qxa6 Ne4 { [%mdl 8192]} (22... Kg7 $14) 23. Nxe4 $18 {aiming for Nf6+.} ({Not} 23. Qg6+ Kh8 $18) 23... Rxe4 24. Qg6+ $1 {[%mdl 64] Double Attack. Weighted Error Value: White=0.03/Black=0.85} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "14.10"] [White "Lei, Tingjie"] [Black "Abdumalik, Zhansaya"] [Result "1-0"] [ECO "D27"] [WhiteElo "2505"] [BlackElo "2472"] [Annotator "TA"] [PlyCount "157"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 20,157,30,20,47,0,0,23,13,12,10,9,22,33,12,14,6,-6,-4,-5,-5,-5,-5,-5,-9, -43,-39,-47,-41,-54,-26,-37,-37,-36,-33,-46,-26,-30,-26,-35,-30,-36,-26,-30,-3, -20,-5,-6,0,-25,-16,-17,-20,-43,0,0,2,0,16,15,110,118,125,0,0,0,0,0,33,29,105, 110,247,63,282,279,272,272,254,224,209,125,125,114,143,141,189,49,114,112,112, 112,107,0,107,0,131,131,131,0,64,0,131,0,64,0,0,0,12826,12827,12836,12835, 12836,12834,12837,12837,12837,12837,12837,12834,12841,12841,12841,12842,12844, 12841,12841,0,12844,12844,12850,27999,27999,27999,27999,27999,27999,27999, 27999,27999]} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. b3 b5 8. Be2 Bb7 9. a4 b4 10. Bb2 Nbd7 11. Nbd2 {[%CAl Bb1d2,Bd2c4,Bc4a5][%mdl 32]} cxd4 {[#] D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4.} 12. Bxd4 $146 ({Predecessor:} 12. Nxd4 Be7 13. Bf3 Bxf3 14. Qxf3 O-O 15. Nc6 Qe8 16. Rac1 Nd5 17. Ne4 f5 18. Qg3 N7f6 19. Nxe7+ Qxe7 20. Nxf6+ Nxf6 { 1-0 (79) Lysyj,I (2809)-Jia,H (2560) Chess.com INT 2020}) 12... Bc5 13. Nc4 O-O {White has an edge.} 14. Rc1 Ne4 15. Ba1 Ndf6 16. Qxd8 Rfxd8 17. Na5 Bd5 18. Nd4 Bxd4 19. Bxd4 Nd2 {[%mdl 64] Double Attack} 20. Rfe1 Nxb3 21. Nxb3 Bxb3 22. Rb1 Bxa4 23. Rxb4 Be8 24. Bf3 Rab8 (24... a5 {is interesting.} 25. Rc4 Nd5 26. h4 a4 27. Ra1 Rac8) 25. Reb1 Rxb4 26. Rxb4 Bb5 27. g4 Nd7 28. Rb1 Rc8 29. Bb7 Rc7 30. Be4 f6 31. h4 Nf8 32. Kh2 Kf7 33. Kg3 g6 34. Rd1 f5 35. gxf5 gxf5 36. Bf3 Ng6 37. h5 Ne7 38. Kf4 Rc8 39. h6 Ng6+ (39... Nd5+ $11 {remains equal.} 40. Bxd5 exd5) 40. Kg5 $16 {[%mdl 1024] White has strong compensation.} e5 41. Bb6 (41. Bd5+ $16 Ke8 42. Bb6) 41... Ne7 42. Rd6 Rg8+ 43. Kh4 Ng6+ (43... Rg1 { looks sharper.} 44. Bc5 Ng6+ 45. Kh3 e4 46. Bd1 Rh1+) 44. Kh3 {Strongly threatening Bd5+.} Bf1+ (44... Bc4 $11) 45. Kh2 {Black must now prevent Bd5+.} Rc8 (45... Bc4 $16 {was necessary.}) 46. Rd7+ $2 ({Only move:} 46. Bb7 $1 $18 { [%CAl Rb7c8]} Rh8 47. Bd5+ Ke8 48. Bc5) 46... Ne7 (46... Ke6 $14 47. Rxh7 Kf6) 47. Bd5+ $18 Kf6 48. Bd8 Rxd8 49. Rxd8 {[%mdl 4096] Endgame KRB-KBN} Kg5 {[#]} 50. Be6 (50. Rd7 $1 $18 {[%CAl Rd7e7]} Nxd5 51. Rxd5) 50... Bb5 $16 51. Rd6 Ng6 52. Bc8 f4 53. e4 (53. Bxa6 $18 Be8 54. Kh3) 53... Kxh6 (53... Be2 $1 $14) 54. Bxa6 Bxa6 55. Rxa6 $14 {KR-KN} Kg5 56. Ra7 ({White should try} 56. Kh3 $16) 56... h6 (56... Kg4 $1 $11) 57. Rh7 (57. Ra3 $16) 57... h5 (57... Nh4 $1 $11) 58. Kh3 $16 Nh4 59. Re7 (59. Rg7+ $16 Ng6 60. Rc7) 59... Kf6 60. Rh7 (60. Rc7 $14 Nf3 61. Rc6+ Kg5 62. Rc3) 60... Kg5 61. Rh8 ({Better is} 61. Rg7+ $16 Ng6 62. Rc7) 61... Nf3 $14 62. Rg8+ (62. Rd8 $1 $14) 62... Kf6 $11 63. Kg2 (63. Rc8 {seems wilder.} Ng5+ 64. Kh4 Nxe4 65. f3 Nd2 66. Rc6+) 63... Nd2 $2 {[%mdl 8192] [#] Black is now going downhill.} (63... Ne1+ $11 64. Kf1 Nf3) 64. f3 $1 $18 Nc4 65. Rh8 Kg6 66. Rc8 Ne3+ 67. Kh3 Nf1 68. Rc6+ Kf7 69. Rh6 Ng3 70. Kh4 Ke7 71. Kg5 Kf7 72. Ra6 Ke7 73. Rh6 Kf7 $1 74. Rxh5 Nxh5 75. Kxh5 Ke7 {White mates.} 76. Kg5 Ke6 77. Kg6 Ke7 78. Kf5 Kd6 79. Kf6 {Weighted Error Value: White=0.27/Black=0.34} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "15.1"] [White "Abdumalik, Zhansaya"] [Black "Keymer, Vincent"] [Result "0-1"] [ECO "B91"] [WhiteElo "2472"] [BlackElo "2591"] [Annotator "TA"] [PlyCount "134"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,134,22,12,26,5,26,0,0,0,0,-14,-10,-13,-14,-27,31,32,27,0,28,21,22,6, 43,-25,-20,-19,-4,-47,-41,-43,-31,-34,-15,-8,-4,-16,-16,-16,-13,-14,-10,-21,0, 0,0,0,19,0,25,16,28,-21,0,-59,0,0,0,0,0,-30,164,150,166,173,153,121,106,-10,0, 0,0,0,0,0,0,0,0,-8,-8,-19,-18,-31,-8,-315,-315,-387,-321,-399,-411,-807,-285, -409,-371,-362,-362,-362,-362,-362,-354,-425,-346,-393,-280,-250,-61,-5323, -5323,-5323,-5323,-5316,-5316,-5316,-5226,-5200,-5200,-5165,-5091,-5093,-4614, -1778,-910]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nb3 Be7 8. Bg2 Be6 {B91: Sicilian Najdorf: 6 g3.} 9. O-O Nbd7 {[%CAl Bb8d7, Bd7b6,Bb6a4][%mdl 32]} 10. h3 Rc8 {[#] The position is equal.} 11. Re1 $146 ({ Predecessor:} 11. Be3 b5 12. a3 O-O 13. f4 exf4 14. gxf4 Nb6 15. e5 Ne8 16. f5 Bc4 17. Rf2 dxe5 18. Qxd8 Bxd8 {0-1 (60) Balenovic,Z (2106)-Yaghy,R (1912) Pardubice 2019}) 11... b5 12. Nd2 Nb6 13. Nf1 O-O 14. Ne3 Rxc3 15. bxc3 $14 Qc7 16. Bd2 Na4 17. Qf3 Rc8 18. g4 Nd7 19. Nf5 ({White should try} 19. c4 $1 $14) 19... Bf8 $11 20. g5 Ndb6 21. h4 Nc4 22. Bc1 Qa5 23. Bf1 Qxc3 24. Qxc3 Nxc3 25. Bd3 g6 26. Ne3 Nb6 27. a3 Be7 28. Bd2 Nba4 (28... Bd8 {is more complex.} 29. Nd1 Nca4 30. Kg2 h6 31. f3 Nc5) 29. Nd1 Nxd1 30. Rexd1 Kf8 31. f4 Ke8 32. f5 Bd7 33. Kf2 Nb2 34. Rdc1 ({White should play} 34. Rdb1 $11 Nxd3+ 35. cxd3) 34... Bd8 (34... gxf5 $15 35. exf5 d5) 35. f6 Bb6+ 36. Be3 Ba5 37. Be2 (37. Rab1 $5 {[%CAl Rb1b2]} Nc4 38. a4 $11) 37... Be6 $2 {[#]} (37... Bc3 $11) 38. a4 $1 $18 {[%CAl Ra4b5]} Nxa4 {White should prevent ...Bc3.} 39. c4 $1 { [%CAl Rc4b5]} Bd7 40. cxb5 Rxc1 41. Rxa4 ({Don't take} 41. Bxc1 axb5 42. Be3 Bc6 $14) (41. Rxc1 $16 axb5 42. Kf3) 41... Be1+ 42. Kf3 axb5 ({Not} 42... Bxb5 $2 43. Bxb5+ axb5 44. Ra8+ Kd7 45. Bxc1 $18) 43. Bxb5 {Threatening mate with Ra8+.} Rc8 ({Don't go for} 43... Bxb5 $2 44. Ra8+ Kd7 45. Bxc1 $18) 44. Bxd7+ Kxd7 $11 {[%mdl 4096] Endgame KRB-KRB} 45. Ra1 Bb4 46. h5 gxh5 47. Rh1 Rc3 { And now ...Bc5 would win.} 48. Ke2 Bc5 49. Bd2 {[%mdl 8192]} (49. Bxc5 $11 { and White is okay.} Rxc5 50. Rxh5) 49... Rc4 $19 50. Rxh5 Rxe4+ 51. Kf3 Rd4 52. Rxh7 (52. Ba5 $142) 52... Ke6 $2 (52... Rxd2 53. Rxf7+ Ke6) 53. Ke2 (53. g6 { was called for.} fxg6 54. Bg5) 53... Rg4 54. Rh8 Rg2+ 55. Ke1 d5 56. Re8+ Kf5 57. Rc8 Ba3 58. Rc7 Kg6 59. Ra7 {[#]} Bc5 ({Better is} 59... Rg1+ $1 $19 60. Ke2 Rg2+ 61. Ke1 Rg1+ 62. Ke2 Rg2+ 63. Kd1 Rg3) 60. Ra5 $2 {[%mdl 8192] [#]} ( 60. Rd7 $15) 60... Rxd2 $1 {[%mdl 512] Black is clearly winning.} 61. Rxc5 { KR-KR} (61. Ra8 Bb4) 61... Rd4 62. Rc7 Rg4 63. Rd7 d4 64. Ke2 Rxg5 65. Rd6 Rf5 66. Kd3 Rxf6 67. Rd5 Kf5 {Quite a comeback for Black. Weighted Error Value: White=0.43/Black=0.31} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "15.2"] [White "Shuvalova, Polina"] [Black "Lei, Tingjie"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2489"] [BlackElo "2505"] [Annotator "TA"] [PlyCount "112"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 18,112,20,23,24,0,0,11,8,0,10,0,0,0,0,0,0,0,0,0,0,0,18,-16,0,-75,-74, -91,-85,-115,-114,-125,-84,-118,-118,-191,-60,-60,-54,-60,-45,-50,-36,-81,-38, -217,-26,-33,-33,-33,-26,-26,-26,-33,-33,-33,0,-47,-1,0,-8,-8,-8,-11,-11,-11, -11,-11,0,-11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. d4 Bf6 10. Re1 Re8 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 11. Rxe8+ Nxe8 12. d5 d6 13. Nd2 a5 14. a4 Bg5 {[#]} 15. Ne4 $146 ({Predecessor:} 15. Ra3 Bd7 16. g3 Nf6 17. Bg2 Qe8 18. c4 b6 19. h3 h5 20. h4 Bh6 21. b3 { 0-1 (45) Abdusattorov,N (2627)-So,W (2770) Chess.com INT 2020}) 15... Bxc1 16. Qxc1 Bf5 17. Qf4 Bxe4 18. Qxe4 Nf6 19. Qc4 Qd7 20. Ra3 Re8 21. Rc3 {[#]} (21. Qc3 $1 $11 {keeps the balance.}) 21... Re7 $1 $17 22. Qd4 b6 23. Rg3 {And now Qxf6 would win.} Qf5 24. h3 Qe5 25. Qxe5 Rxe5 {[%mdl 4096] Endgame KRB-KRN} 26. c4 (26. Bc4 $17 {keeps fighting.}) 26... Kf8 (26... Re1 $19 27. Re3 Rb1) 27. Re3 $1 $15 Rxe3 28. fxe3 {KB-KN} Ke7 29. Bd3 Nd7 30. Kf2 Kf6 31. h4 $2 ({ White should try} 31. b3 $15) 31... h5 $2 ({Better is} 31... Ne5 $19 32. Be2 Kf5) 32. Bc2 $11 Ne5 33. b3 Ng4+ 34. Kf3 Ke5 35. Bd3 Nf6 36. Bc2 Ng4 37. Bd3 f5 38. Bc2 {The position is equal.} Nf6 39. Bd3 Nd7 40. Bc2 Nc5 41. Kg3 Ne4+ 42. Kf3 Nc5 (42... Nc3 {seems wilder.} 43. g3 Na2 44. Bb1 Nb4 45. Kf2 c6) 43. g3 Ne4 (43... Nd7 {with more complications.} 44. Kf2 Nf6 45. Kf3 Ng8 46. Kf2 Ne7) 44. Bxe4 fxe4+ {KP-KP} 45. Kg2 $1 Kf6 (45... Kf5 $5 46. Kh3 $8 g6 $11) 46. Kh2 Kg6 47. Kg2 Kf5 {[#] Strongly threatening ...Kg4.} 48. Kh3 g5 49. g4+ $1 hxg4+ 50. Kg3 gxh4+ $1 51. Kxh4 g3 $1 {[%CAl Rg3g2]} 52. Kxg3 {Kh4 is the strong threat.} Kg5 53. Kh3 $1 Kh5 $1 54. Kg3 {Threatens to win with Kf4.} Kg5 55. Kh3 $1 Kh5 $1 56. Kg3 {Threatening Kf4.} Kg5 {Weighted Error Value: White=0.16/ Black=0.17} 1/2-1/2 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "15.3"] [White "Mammadzada, Gunay"] [Black "Bjerre, Jonas Buhl"] [Result "1/2-1/2"] [ECO "B90"] [WhiteElo "2443"] [BlackElo "2542"] [Annotator "TA"] [PlyCount "114"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,114,21,23,30,20,20,15,15,6,25,7,20,18,25,26,37,17,47,44,44,31,74,-20, -12,-23,14,20,82,77,100,93,93,95,78,59,366,369,506,147,129,29,51,0,64,64,71,18, 136,0,-4,-371,-95,-193,-196,-184,-189,-202,-197,-193,-137,-252,-206,-275,-280, -541,-253,-247,-244,-242,-151,-235,-225,-252,-252,-237,-241,-225,-209,-198, -118,-267,-265,-279,-279,-286,-327,-376,-279,-334,-11,-11,0,0,0,0,0,0,0,0,0,0, 0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e5 $1 { The main line 6...e5 scores better than 6...e6.} 7. Nde2 h5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 8. Bg5 Be6 9. Bxf6 Qxf6 10. Nd5 Qd8 11. Nec3 Nd7 12. Bc4 Rc8 13. Qe2 g6 {[#]} 14. O-O-O $146 ({ Predecessor:} 14. O-O Bh6 15. Rad1 O-O 16. b4 Nb8 17. Bb3 Nc6 18. Qd3 Nd4 19. Ne2 Nxb3 20. cxb3 Bxd5 21. Qxd5 {0-1 (30) Milosevic,M (2334)-Sturt,R (2490) Belgrade 2021}) 14... Bh6+ 15. Kb1 O-O 16. g3 h4 17. f4 (17. Ne3 $16) 17... hxg3 $11 18. f5 {[%CAl Rf5e6]} gxf5 (18... Bxd5 $5 19. Bxd5 Rxc3 $1 20. bxc3 gxf5 21. exf5 Nf6 $11) 19. exf5 Bxf5 (19... Bxd5 $11 20. Bxd5 Nf6) 20. Bd3 $16 Bg6 21. Rhg1 Qh4 {Black wants to play ...f5.} 22. Bxg6 fxg6 23. Ne4 Kh7 $2 { [%mdl 8192]} ({Black should try} 23... Nc5 $1 $14 24. Nxg3 (24. Nxd6 Rcd8 $17) 24... Kh7) 24. Rxg3 $18 Qh5 {[#]} 25. Qxh5 (25. Rg4 $1 $18 {and the rest is easy.}) 25... gxh5 $16 26. Nxd6 (26. Rdg1 $16) 26... Rc6 $11 27. Ne4 ({White should play} 27. Nxb7 $14 e4 28. Nc3) 27... Nc5 (27... Rc4 $1 $11 28. Ndc3 Rd4) 28. Ng5+ $14 Kh8 29. c4 (29. h4 $16) 29... Ne6 {[#]} (29... a5 $11 {keeps the balance.}) 30. Nxe6 (30. Nf3 $1 $16 {[%CAl Rf3e5]} Bf4 31. Nxf4 exf4 32. Rg6) 30... Rxe6 $11 31. Ne3 $2 {[%mdl 8192]} (31. Rdg1 $11) 31... e4 $2 (31... h4 $19 32. Rg4 Bxe3 33. Rxh4+ Kg7 34. Rd7+ Kg6 35. Rg4+ Kf5 36. Rxb7 Rh6) 32. Re1 (32. h4 $17) 32... Rf3 $19 33. Nf1 {Rxf3 is the strong threat.} Ref6 34. Rg1 e3 35. Ng3 Rd6 (35... h4 $19 36. Ne4 R6f4) 36. Ne2 (36. Ne4 $17 Re6 37. Rg3) 36... Rd2 {aiming for ...Rf2.} (36... Rxh3 37. c5 $17) 37. Rg6 Bg7 38. Reg1 $2 (38. Rb6 {only move.}) 38... Rxb2+ (38... Rxe2 39. Rxg7 Re1+ 40. Kc2 $15) (38... Rf7 $142 39. R6g2 Rxb2+ 40. Kc1 Rxa2) 39. Kc1 Rxe2 (39... Rxh3 40. Rxg7 (40. Nf4 Rhh2 $11) 40... Rxe2 41. Rg8+ Kh7 42. R8g7+ Kh8 43. Rg8+ Kh7 44. R8g7+ Kh8 $11) 40. Rxg7 {[#]} Rf1+ $3 {[%mdl 576] Deflection} 41. Rxf1 Kxg7 $17 {[%mdl 4096] Endgame KR-KR} 42. Rf3 Kg6 ({But not} 42... Rxa2 43. Rxe3 Ra4 44. c5 $17) 43. Kd1 Rd2+ ({Don't do} 43... Rxa2 44. Rxe3 Rb2 45. c5 $17) 44. Ke1 Rxa2 45. Rxe3 Kf5 (45... a5 $19 46. Rb3 a4 47. Rxb7 Rc2 48. Rb6+ Kf7) 46. Re7 (46. Rb3 $17 { was forced.}) 46... Rb2 $19 47. Kd1 a5 48. Kc1 Rb4 49. Kd2 Rb3 50. Rc7 { and the idea Rc5+ leaves White hopeful.} b6 ({Less strong is} 50... Rxh3 51. Rc5+ Kg4 52. Rxa5 $17) (50... a4 $19 51. Rc5+ Kg6) 51. c5 $1 $11 {The position is equal.} b5 {[%CAl Bb6b5,Bb5b4][%mdl 32]} 52. c6 {Strongly threatening Rf7+.} b4 (52... Rb4 {seems wilder.} 53. Rh7 Kg5 54. Rg7+ Kf6 55. Rh7 h4) 53. Ra7 Rc3 54. Rxa5+ Kf4 55. Rxh5 Rxc6 56. Rh4+ Kg3 57. Rxb4 Kxh3 {Quite a comeback for White. Weighted Error Value: White=0.54/Black=0.58} 1/2-1/2 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "15.4"] [White "Saduakassova, Dinara"] [Black "Praggnanandhaa R"] [Result "1/2-1/2"] [ECO "E01"] [WhiteElo "2500"] [BlackElo "2608"] [Annotator "TA"] [PlyCount "81"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,81,30,37,36,36,36,36,36,36,33,36,36,33,34,53,28,36,0,10,1,22,20,37,0, 4,0,0,-20,-20,-20,-19,-55,-16,-20,-6,-22,34,34,42,9,9,9,9,9,9,9,9,9,9,9,9,8,10, 8,18,8,8,8,8,8,8,0,0,0,8,8,8,0,0,0,8,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 h6 5. Bg2 Bd6 6. O-O {E01: Catalan: Early deviations.} O-O 7. Nc3 Nc6 8. b3 { White is slightly better.} dxc4 9. bxc4 e5 10. Rb1 exd4 11. Nxd4 {[#]} Ne5 $146 ({Predecessor:} 11... Nxd4 12. Qxd4 c6 13. Rd1 Be7 14. Qe5 Qe8 15. Bf4 g5 16. Bd2 Ng4 17. Qa5 f6 18. c5 f5 19. Qa3 Rf7 20. Na4 Bf8 21. h3 Ne5 22. Nb6 { 1/2-1/2 (22) Wuttke,J (2186)-Grabner,J (2283) ICCF email 2015}) 12. Ndb5 Nxc4 13. Qd4 Be6 14. Nxd6 Nxd6 15. Bf4 Rc8 16. Rfd1 b6 17. a4 Qe7 18. Nb5 Nxb5 19. axb5 Bf5 20. Ra1 Rfd8 21. Qe5 Qxe5 22. Bxe5 Re8 ({Black should play} 22... Rxd1+ $11 23. Rxd1 Nd7) 23. Bxf6 $14 gxf6 24. e3 Be4 {The position is equal.} 25. Rxa7 Bxg2 26. Kxg2 $11 {[%mdl 4096] Endgame KRR-KRR} Re5 27. Rc1 Rxb5 28. Rcxc7 Rxc7 29. Rxc7 {KR-KR} h5 30. h3 Kg7 31. Kf3 Rb1 32. Rb7 b5 {[%CAl Bb6b5, Bb5b4,Bb4b3][%mdl 32]} 33. Rb6 b4 34. Rb7 b3 35. Kf4 Rb2 36. Kf3 Kg6 37. Rb5 Rb1 38. Kf4 Rb2 39. Kf3 Rb1 40. Kf4 Rb2 41. Kf3 {Weighted Error Value: White=0. 08/Black=0.06} 1/2-1/2 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "15.5"] [White "Yoo, Christopher Woojin"] [Black "Mendonca, Leon Luke"] [Result "1-0"] [ECO "B23"] [WhiteElo "2457"] [BlackElo "2549"] [Annotator "TA"] [PlyCount "67"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,67,0,6,0,2,0,5,0,10,1,3,0,5,-5,0,5,27,15,50,32,53,21,52,29,89,96,79, 92,97,89,86,62,81,79,128,100,120,114,135,133,140,144,150,37,152,131,631,578, 570,570,1559,1542,1463,1441,1341,1303,29994,29995,29995,29996]} 1. e4 c5 2. Nc3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. d4 cxd4 6. Qxd4 {B23: Closed Sicilian: Lines without g3.} Nc6 7. Qd3 g6 8. Nf3 {The position is equal.} Bg7 9. O-O Nf6 10. Nd5 O-O 11. Bg5 Ne8 12. Rad1 {[#]} h6 $146 ({Predecessor:} 12... Nc7 13. c3 Ne6 14. Bc1 Rfe8 15. Rfe1 Rac8 16. h3 b6 17. b4 Qb7 18. a3 b5 {1/2-1/2 (58) Guseinov,G (2665)-Hernandez Gonzalez,W (2481) Chess.com INT 2020}) 13. Be3 Nc7 14. Rfe1 Rac8 {Threatening ...Nxd5.} 15. c3 Qd8 16. h4 Ne6 (16... h5 $11) 17. Qb5 $16 Rb8 18. e5 Re8 19. exd6 exd6 20. a4 a6 21. Qc4 Rc8 22. Nb6 Rc7 23. Qd5 Ne5 24. Nxe5 ({But not} 24. Qxd6 $6 Nxf3+ 25. gxf3 Qxh4 $14) 24... dxe5 25. Qe4 $36 {[%mdl 2048] Black is under strong pressure.} Qb8 26. Nd5 (26. h5 $16) 26... Rcc8 ({Black should play} 26... f5 $14 27. Qc2 Rf7) 27. h5 Kh7 $4 { [%mdl 8192]} (27... g5 $16 28. a5 Nf4) 28. hxg6+ $18 fxg6 {[#]} 29. Bxh6 $1 { [%mdl 576] Deflection} Bxh6 (29... Nc5 30. Qh4) 30. Nf6+ {[%mdl 64] Double Attack} Kg7 31. Nxe8+ Rxe8 32. Rd7+ {[%mdl 64] Double Attack} Kh8 33. Qxg6 { [%csl Gd7][%CAl Rg6h7]} Bg7 34. Re3 {Weighted Error Value: White=0.14/Black=0. 74} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "15.6"] [White "Gukesh D"] [Black "Zhu, Jiner"] [Result "1-0"] [ECO "D02"] [WhiteElo "2578"] [BlackElo "2462"] [Annotator "TA"] [PlyCount "53"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,53,12,-12,0,0,0,2,11,0,2,-19,31,32,35,38,34,23,26,29,32,33,35,23,37, 27,73,46,148,60,461,0,507,511,767,767,767,767,6599,6583,6583,6511,6511,5685]} 1. d4 Nf6 2. Nf3 e6 3. Bf4 d5 4. e3 c5 5. Nbd2 Nc6 6. c3 Bd6 7. Ne5 O-O { D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} 8. Bd3 Qc7 {[%CAl Rc6e5]} 9. Ndf3 Ne7 {The position is equal. 9...cxd4 is the modern continuation.} (9... c4 $5 {[%CAl Rc4d3]} 10. Bc2 b5 $11) 10. O-O b6 {[#]} 11. Qb1 $146 ({Predecessor:} 11. Bg3 Ne4 12. Qc2 Bb7 13. a4 f6 14. Ng4 h5 15. Bxd6 Qxd6 16. Bxe4 dxe4 17. Nd2 hxg4 18. Nxe4 {0-1 (30) Rian,K (2126)-Sezdbekov,R (2232) Chess.com INT 2020}) 11... Ng6 12. Nxg6 hxg6 13. Bxd6 Qxd6 14. Ne5 a5 15. f4 Ba6 16. Bxa6 Rxa6 17. Rf3 Ne4 {next ...Nd2 is good for Black.} 18. Rh3 b5 19. Qd1 {Threatens to win with Qg4.} Qe7 (19... cxd4 $14 20. exd4 Qe7) 20. Qg4 (20. dxc5 $1 $16 a4 21. Qg4) 20... c4 $2 {[%mdl 8192]} ({Black should try} 20... cxd4 $1 $14 21. exd4 Nd6) 21. a3 $2 $40 {[%mdl 128] White mounts an attack.} (21. Rh4 $1 $18) 21... Raa8 $2 {[%mdl 8192] [#]} (21... Nd6 $1 $11 { and Black stays safe.}) 22. Rh4 $1 $18 {White is clearly winning.} g5 (22... b4 $142 23. Qh3 Qxh4 24. Qxh4 bxc3) 23. fxg5 Qxg5 {[#]} 24. Qh3 $1 {[%csl Gh3] [%CAl Rh4h8]} g6 25. Rh8+ Kg7 26. Qh7+ Kf6 27. Rf1+ {Weighted Error Value: White=0.52/Black=1.13} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "15.7"] [White "Badelka, Olga"] [Black "Nihal Sarin"] [Result "0-1"] [ECO "A41"] [WhiteElo "2418"] [BlackElo "2620"] [Annotator "TA"] [PlyCount "92"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,92,34,37,57,14,22,23,25,13,26,23,25,18,21,-22,-11,-16,-3,-4,-12,-12, -5,-5,-4,-39,-41,-45,-43,-42,-50,-67,-66,-78,-76,-81,-72,-75,-69,-73,-71,-72, -70,-133,-107,-106,-119,-117,-75,-79,-82,-100,-90,-153,-133,-129,-118,-162, -110,-300,-194,-261,-278,-310,-313,-298,-286,-327,-324,-612,-573,-573,-569, -524,-539,-1219,-1210,-7614,-7324,-2795,-1179,-5747,-5723]} 1. Nf3 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nc6 5. d5 Ne5 6. Nxe5 Bxe5 7. e4 Nf6 {7...Nf6 scores better than 7...Bg7. A41:1 d4 d6: Tartakower System and Modern Defence.} 8. Qd3 O-O { [#]} 9. Be2 $146 ({Predecessor:} 9. Bd2 Nh5 10. g3 f5 11. f4 fxe4 12. Qxe4 Bg7 13. Bd3 Bh3 14. O-O-O Nf6 15. Qe3 {1-0 (24) Arnaudov,P (2436)-Medak,B (2415) Bol 2014}) 9... Re8 {White has an edge.} 10. O-O e6 11. Bg5 {Threatens to win with f4.} exd5 12. Nxd5 {Hoping for f4.} h6 $1 {[%CAl Rh6g5]} 13. Nxf6+ (13. Bxh6 Nxe4 $1 14. Bf3 Bf5 $1 $17) (13. Bh4 $5 {[%CAl Rf2f4]} g5 14. Bg3 $11) 13... Bxf6 14. Bxh6 Qe7 15. f3 Bxb2 16. Rab1 Bg7 17. Bxg7 Kxg7 18. Qd5 Qe5 19. Rfd1 Rb8 20. g3 b6 21. Qd2 Bd7 22. Bd3 Bc6 23. Qf2 Qf6 24. Re1 Re7 25. Re3 Qd4 26. Rbe1 Rbe8 27. g4 (27. Bc2 $15) 27... Re5 28. Bf1 Ra5 29. h4 Qe5 30. f4 Qd4 31. Bg2 Rc5 ({Of course not} 31... Qxc4 $6 32. Qb2+ Kf8 33. Rc1 $11) 32. h5 ( 32. Bf1 $142) 32... Rxc4 33. hxg6 fxg6 34. f5 g5 (34... gxf5 $19 35. gxf5 Kf7) 35. Rf1 $2 {This costs White the game.} (35. f6+ $17 Qxf6 36. Rf3) 35... Kf6 { [%CAl Rc6e4]} 36. Rfe1 {[#]} (36. Rh3 {is a better defense.} Qxf2+ 37. Rxf2) 36... Rh8 $1 $19 37. Bf1 Rc5 38. Bg2 Qe5 {White must now prevent ...Qh2+.} 39. Bf1 Rh4 40. Rg3 $2 (40. Bh3) 40... Rc3 {Black is clearly winning.} 41. Rxc3 Rxg4+ 42. Bg2 Qxc3 43. Qe2 Bxe4 44. Qxg4 Qxe1+ 45. Kh2 Bxf5 46. Qc4 Qh4+ { Weighted Error Value: White=0.69/Black=0.20} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "15.8"] [White "Salimova, Nurgyul"] [Black "Yip, Carissa"] [Result "1-0"] [ECO "D02"] [WhiteElo "2395"] [BlackElo "2430"] [Annotator "TA"] [PlyCount "101"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,101,43,39,43,36,18,11,21,52,54,58,55,68,69,125,122,123,113,152,83,151, 76,77,88,75,65,79,73,126,118,125,115,177,180,160,128,608,107,135,140,139,136, 151,165,186,162,1056,240,537,558,548,531,1046,1019,991,969,931,0,0,0,936,926, 910,925,899,871,835,819,734,725,837,1006,969,969,997,978,958,875,1367,1287, 1432,1053,1679,1725,2038,1884,29994,29990,29990,29983,29989,29990,29994,29991] } 1. d4 d5 2. Nf3 g6 3. Nbd2 Bg7 4. e3 e6 5. b4 Ne7 6. c4 {[#] D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} O-O $146 ({ Predecessor:} 6... b6 7. b5 c5 8. bxc6 Nbxc6 9. Bb2 O-O 10. Be2 Bb7 11. O-O Rc8 12. Qa4 Na5 {1-0 (26) Riazantsev,A (2646)-Kulaots,K (2574) Minsk 2015}) 7. Bd3 Nd7 8. O-O {The position is equal.} c5 9. bxc5 Nxc5 10. Be2 b6 11. Ba3 Nd7 ( 11... Nb7 $14) 12. cxd5 exd5 13. Rc1 Bb7 14. Qa4 ({Better is} 14. Qc2 {aiming for Qc7.} Rc8 15. Qa4) 14... Nf6 (14... Re8 $142) 15. Ba6 (15. Rc2 $142) 15... Bxa6 $16 16. Qxa6 Re8 17. Rc2 Ne4 18. Rfc1 Nxd2 (18... Nf5 $142) 19. Nxd2 Nf5 20. Nf3 Nh4 (20... Bh6 $16 {was called for.}) 21. Nxh4 $18 Qxh4 22. Qb7 Qg5 $2 {[%mdl 8192]} (22... Qe4 $16) 23. g3 $2 (23. Rc8 $1 $18 Raxc8 24. Rxc8) 23... h5 24. h4 Qf5 {[#]} 25. Bd6 $1 Bh6 26. Be5 Rad8 27. Rc7 Qf3 $2 (27... Bf8 28. Qxa7 Bd6) 28. Bf4 $2 (28. R1c6 {Rf6! is the strong threat.} Bg7 {[#]} 29. Rxg6 $3 {[%mdl 576] Pin} Rxe5 30. dxe5) 28... Rxe3 $2 (28... Rb8 29. Qxa7 Ra8) 29. Bxh6 ({And not} 29. fxe3 Bxf4 30. gxf4 Qxe3+ 31. Kg2 Qe2+ 32. Kg1 Qg4+ 33. Kf2 Qxf4+ 34. Ke2 Re8+ 35. Kd3 Re3+ 36. Kc2 Qxd4 $11) ({Weaker is} 29. Bxe3 Bxe3 30. fxe3 Qxg3+ 31. Kf1 Qf3+ 32. Kg1 Qxe3+ 33. Kf1 Re8 $11) 29... Re2 30. Rf1 Rxf2 31. Rxf2 Qxg3+ 32. Kf1 Qd3+ 33. Kg1 $2 (33. Ke1 $18 Qe4+ 34. Kd1 Qxd4+ 35. Rd2 Qa1+ 36. Rc1) 33... Qg3+ $11 34. Kf1 {White wants to mate with Rc3!} Qd3+ { White stays focused until the end.} 35. Re2 Qd1+ 36. Kf2 Qxd4+ 37. Ke1 Qxh4+ 38. Kd1 Qd4+ 39. Kc2 Qa4+ 40. Kc1 Qa3+ 41. Kb1 Qb4+ 42. Rb2 Qe4+ 43. Ka1 h4 44. Rc1 h3 45. Bg5 Re8 46. Bf6 Qf4 47. Qc6 Qe3 48. Rbc2 {White mates.} Kh7 49. Qxd5 Re6 50. Bb2 Qg3 51. Qd4 {[%csl Gb2][%CAl Rd4h8] Weighted Error Value: White=0. 62/Black=0.66} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "15.9"] [White "Liang, Awonder"] [Black "Abdusattorov, Nodirbek"] [Result "1/2-1/2"] [ECO "C81"] [WhiteElo "2592"] [BlackElo "2634"] [Annotator "TA"] [PlyCount "114"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 29,114,23,21,2,6,8,6,6,0,10,6,12,18,18,28,28,42,44,85,66,70,45,38,40,45, 8,8,8,24,22,22,22,20,34,37,37,43,37,37,37,37,37,37,37,37,37,37,43,43,43,43,43, 43,34,43,34,43,34,34,34,34,34,34,34,34,34,51,29,29,8,8,8,8,8,8,8,8,8,8,0,8,8,8, 0,0,0,8]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 O-O 11. c4 bxc4 12. Bxc4 Bc5 13. Be3 Bxe3 14. Qxe3 Qb8 15. Bb3 Qb6 16. Nbd2 {C81: Open Ruy Lopez: Keres Variation (9 Qe2).} ( 16. Qxb6 {looks sharper.} cxb6 17. Na3 Rad8 18. Nc2 Nc5 19. Ncd4) 16... Qxe3 17. fxe3 Na5 18. Nxe4 Nxb3 19. axb3 {[#] aiming for Nc5.} dxe4 20. Nd4 Rfb8 21. Rdc1 Rb7 {[#]} 22. Ra3 $146 ({Predecessor:} 22. Nxe6 fxe6 23. Ra3 Kf7 24. Rc4 Rd8 25. Rxa6 Rd1+ 26. Kf2 Rd2+ 27. Kg3 Rxb2 28. Rac6 R2xb3 29. Rxc7+ Rxc7 30. Rxc7+ {1/2-1/2 (55) Svendsen,T-Ciparis,J corr 1994}) 22... g6 23. Kf2 Rab8 24. Rxa6 Bxb3 25. Kg3 Bd5 26. Rc5 c6 27. Nxc6 Bxc6 28. Raxc6 $14 {[%mdl 4096] Endgame KRR-KRR} Rb3 29. Rc3 Rxb2 30. e6 fxe6 31. Rxe6 Rf8 32. Re7 Rf7 33. Rxf7 Kxf7 {KR-KR} 34. Rc4 g5 35. Rxe4 h5 36. h3 Kf6 37. Kf3 Ra2 38. Rc4 Ra3 39. Rc6+ Kg7 40. Rb6 Ra2 41. Rb5 Kf6 42. Rb8 Rc2 43. Rh8 {Threatens to win with Rh6+.} Kg6 44. Rg8+ Kf6 45. Rf8+ Kg7 46. Rf5 (46. Re8 {feels hotter.} Kf6 47. Rb8 g4+ 48. Kg3 Re2 49. Rb3) 46... Kg6 47. Ra5 (47. Rd5 {is interesting.} g4+ 48. Kg3 Re2 49. hxg4 hxg4 50. Re5) 47... Kf6 48. Ra1 g4+ 49. hxg4 hxg4+ {The position is equal.} 50. Kg3 Re2 51. Ra3 Kf5 52. Rb3 Kg5 53. Rb5+ Kf6 54. Rb3 Kg5 55. Rd3 Kf5 56. Kh2 Kg5 57. Kg3 Kf5 {Weighted Error Value: White=0.05/Black=0.03} 1/2-1/2 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "15.10"] [White "Khademalsharieh, Sarasadat"] [Black "Murzin, Volodar"] [Result "1-0"] [ECO "E68"] [WhiteElo "2494"] [BlackElo "2502"] [Annotator "TA"] [PlyCount "127"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 19,127,26,11,17,23,20,22,20,27,-13,-16,-16,14,8,23,0,17,0,14,0,0,0,9,3, 7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,87,101,127,94,113,0,0,0,0,0,127,8, 152,93,264,258,271,278,360,339,423,433,495,485,487,482,456,369,375,367,399,378, 393,316,473,481,464,450,624,612,770,765,845,726,667,677,1032,983,1255,1296, 1213,1214,1185,1185,4959,2083,7687,2173,12835,5462,5539,5458,1469,1015]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. e4 a6 9. h3 b5 10. cxb5 axb5 11. dxe5 {E68: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4.} Nxe5 12. Nxe5 dxe5 13. Bg5 {The position is equal.} c6 14. a3 Be6 15. Qc2 {[#]} Qa5 $146 ({Predecessor:} 15... Qc8 16. Kh2 Nd7 17. Rfd1 Nc5 18. Rd6 Nb3 19. Rad1 Nd4 20. Qd2 Qc7 21. Rxd4 exd4 {1-0 (46) Hirneise,J (2308)-Hoolt,S (2215) Playchess.com INT 2009}) 16. b4 Qa6 17. Be3 Rfd8 18. Rfc1 Nd7 19. Nd1 { [%CAl Bc3d1,Bd1b2,Bb2d3,Bd3c5][%mdl 32]} Rdc8 20. Nb2 Nb6 21. Bf1 Qb7 22. Nd3 Nc4 23. Nc5 Nxe3 24. Nxb7 (24. Qd3 {looks sharper.} Qe7 25. Qxe3 Rd8 26. Nxe6 Qxe6 27. Qb6) 24... Nxc2 25. Rxc2 Bf8 {Strongly threatening ...Bxb4!} 26. Nc5 Bxc5 27. Rxc5 f6 28. h4 Kf7 29. Rc3 Ke7 30. Rac1 Bd7 31. f4 exf4 32. gxf4 Be8 { [#]} (32... Rd8 $11) 33. Bxb5 $1 $16 {[%mdl 64] Pin} Rd8 {[#]} 34. Bd3 ({Resist } 34. Bxc6 Bxc6 35. Rxc6 Rxa3) 34... Rd7 {[#]} 35. Kf2 (35. Bc2 $1 $16) 35... Rda7 $1 $11 36. Ra1 Ra4 $1 37. Rb3 Rb8 (37... Bf7 $11 {remains equal.} 38. Rc3 Be8) 38. Ke3 (38. Bc4 $16) 38... Rba8 (38... c5 $1 $11 {keeps the balance.}) 39. Kd4 (39. Bc4 $142) 39... c5+ $2 {Loses the game.} (39... R8a5 $16) 40. Kxc5 $18 Rd8 41. Bc4 Rd2 42. Rc1 Ra8 {Hoping for ...Rc8+.} 43. b5 Rc8+ 44. Kb4 Rd4 45. a4 Rxe4 46. Rbc3 Rb8 47. Rf1 Kf8 48. Kb3 h5 49. Rff3 Re1 (49... Ra8 { was called for.} 50. Rce3 Rd4) 50. Kb4 {White is clearly winning.} Rb1+ 51. Rb3 Ra1 52. a5 {[%CAl Ba4a5,Ba5a6,Ba6a7][%mdl 32]} Kg7 53. Ra3 Rc1 54. Rfc3 Rb1+ 55. Rcb3 Rc1 56. a6 Rd1 57. a7 Ra8 58. b6 {And now b7 would win.} Bc6 59. Rd3 Rc1 60. Rd6 (60. b7 $142 Bxb7 61. Rd7+ {[%mdl 64] Double Attack} Kh6 62. Rxb7 Rb1+ 63. Bb3) 60... Bg2 61. b7 (61. Rd7+ $142 Kh6 62. Bd5 Bxd5 63. Rxd5) 61... Rb1+ 62. Bb3 (62. Rb3 $142 Bxb7 63. Rd7+ Kh6 64. Rxb1) 62... Bxb7 63. Rd7+ { [%mdl 64] Double Attack} Kh6 64. Rxb7 {Weighted Error Value: White=0.18/ Black=0.38} 1-0