[Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "1.1"] [White "Radjabov, Teimour"] [Black "Jones, Gawain C B"] [Result "1-0"] [ECO "A38"] [WhiteElo "2765"] [BlackElo "2670"] [Annotator "TA"] [PlyCount "87"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 23,87,30,32,29,32,32,41,34,101,106,154,98,137,125,134,133,189,183,198, 179,194,163,212,146,177,168,181,139,166,154,136,125,152,123,121,115,121,121, 156,135,154,122,168,168,154,0,154,155,184,178,499,356,343,339,1161,1102,29958, 29939,29943,6522,29990,29991,29991,29987,29997,29998]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. c4 c5 5. Nc3 O-O 6. O-O Nc6 7. d3 d5 8. cxd5 Nxd5 9. Nxd5 Qxd5 10. Be3 Qd6 11. Rc1 Nd4 12. Nxd4 cxd4 13. Bd2 {A38: Symmetrical English vs ...g6:4 Bg2 Bg7 5 Nf3 Nf6.} Be6 14. Qa4 {[#]} a5 $146 ({Predecessor:} 14... Qb6 15. b3 Be5 16. Ba5 Qa6 17. Bc7 Qxa4 18. bxa4 Bxc7 19. Rxc7 Rfc8 20. Rxe7 Rab8 21. Bxb7 {1-0 (40) McShane,L (2697)-Maze,S (2550) Germany 2014}) 15. Qb5 {White is slightly better.} (15. Bxa5 b6 $17) 15... Bxa2 (15... Bg4 $14) 16. Bxa5 $16 ( 16. Qxb7 $6 Rab8 $11) 16... Qe6 17. Bf3 (17. Bxb7 $142 Ra7 18. Bf3) 17... Be5 18. Bc7 Bxc7 19. Rxc7 Qd6 {[#]} (19... Rfd8 $16 {was necessary.} 20. Bxb7 (20. Qxb7 Rdb8 $16) 20... Rab8) 20. Rd7 $1 $18 {[%CAl Rd7d6]} (20. Qxb7 $6 Rfb8 $16) ({Much less strong is} 20. Rxb7 $6 Be6 $16) 20... Qf6 21. Rxb7 {Strongly threatening Rb6.} ({Don't take} 21. Qxb7 $6 Be6 $16) 21... Be6 22. h4 Rac8 23. Qb4 Rfe8 24. Ra1 h5 25. Qd2 Bg4 26. Bxg4 hxg4 27. Rb5 Rc7 28. Rba5 Kg7 29. Ra6 e6 30. Ra8 Rec8 31. Rxc8 Rxc8 $16 {[%mdl 4096] Endgame KQR-KQR} 32. b4 Qe5 33. Qb2 Rb8 34. Qd2 $2 (34. e3 $16) 34... Qd6 $2 {[#]} (34... Rc8 $1 $11) 35. Qg5 $1 $36 {[%mdl 2048] Keeping Black busy.} Rxb4 36. h5 {Black must now prevent h6+.} ({Don't do} 36. Qxg4 e5 $16) 36... Qb8 $2 (36... Rb7 {is more resistant.} 37. Qxg4 e5) 37. Qxg4 e5 38. hxg6 fxg6 (38... Rb1+ 39. Rxb1 Qxb1+ 40. Kh2 fxg6 41. Qd7+ Kh8 42. Qe8+ Kh7 43. Qe7+ Kg8 44. Qxe5 Qf1 45. Qxd4 Qxe2) 39. Qd7+ $18 Kh6 40. Ra7 Rb1+ 41. Kg2 {White threatens Qh7+ and mate.} Rb6 42. Qh3+ { White mates.} Kg5 43. Rf7 {[%csl Gg3][%CAl Rh3h4]} Qa8+ 44. f3 {[%csl Gg3] [%CAl Rh3h4] Weighted Error Value: White=0.18/Black=0.75} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.24"] [Round "1.2"] [White "Tari, Aryan"] [Black "Vidit, Santosh Gujrathi"] [Result "1/2-1/2"] [ECO "B45"] [WhiteElo "2639"] [BlackElo "2726"] [Annotator "TA"] [PlyCount "204"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,203,16,33,16,22,31,15,6,10,10,10,12,9,4,12,0,9,14,35,-4,0,-2,0,6,34, 39,35,36,91,84,147,147,173,152,270,235,235,232,235,189,182,174,147,163,241,251, 460,460,460,460,442,137,127,142,239,293,367,186,229,149,268,268,266,267,266, 260,260,259,175,29,33,39,30,8,8,4,8,6,21,14,18,0,11,14,33,3,3,0,0,0,-4,-8,-8, -10,-8,-8,-8,-14,-19,-15,-10,-14,0,-14,-14,-28,0,0,0,-33,-34,-35,-43,-43,-11, -12,-8,-18,-25,-27,-37,-37,-34,-70,-8,-54,-34,-34,-27,-78,-55,-64,-11,-34,-27, -27,-23,-26,-25,-34,-11,-11,-8,-8,0,-11,-11,-11,-11,-11,-11,-11,-11,-11,-11, -11,0,-8,0,-11,-11,-11,-8,-8,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8, -8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Qd3 {B45: Sicilian Four Knights.} d5 {6...Qc7 is the modern continuation.} 7. exd5 Nb4 8. Qg3 Bc5 {[#]} 9. Bb5+ $146 (9. Qxg7 Rg8 $17) ({Predecessor:} 9. a3 Nbxd5 10. Ndb5 O-O 11. Bh6 Nh5 12. Qf3 Qf6 13. Qxf6 Nhxf6 14. Nxd5 exd5 15. Be3 Bxe3 16. fxe3 {1-0 (62) Frolyanov,D (2546)-Safin,R (2287) Cheliabinsk 2020}) 9... Kf8 {[#]} 10. a3 $1 {Hoping for Nxe6+.} Nbxd5 11. Nde2 Bd7 12. Bxd7 Qxd7 13. O-O Rd8 14. b4 Bd6 15. Qf3 Be5 16. Bb2 Qc6 17. Rad1 Rc8 {[%CAl Rd5c3] [#]} 18. b5 $1 Qc7 ({Black should try} 18... Qd6 $14) 19. Nxd5 $16 Nxd5 {[#]} ({Avoid the trap} 19... Bxh2+ $2 20. Kh1 $18) (19... exd5 $142 20. Bxe5 Qxe5) 20. c4 $1 {[%CAl Rc4d5]} Bxb2 21. cxd5 Bf6 (21... exd5 $16 22. Rxd5 Re8) 22. Nf4 e5 {[#]} 23. d6 $1 Qd7 24. Nh5 Bd8 {[#]} 25. Rfe1 $1 {[%CAl Re1e5]} Rc5 26. a4 f6 (26... b6 $142 27. Ng3 g6) 27. Ng3 $18 Rc4 $2 ( 27... b6 {is a better defense.} 28. h3 h5) 28. Rxe5 Qg4 29. Qxg4 Rxg4 30. Re4 ( 30. Re2 $18) 30... Rxe4 31. Nxe4 $16 {[%mdl 4096] Endgame KRB-KRN} Kf7 (31... Bb6 $16 32. Rd5 Kf7) 32. Nc5 $18 b6 33. Nb7 (33. Na6 $142) 33... f5 34. Re1 Bf6 (34... Re8 $16 35. Rd1 Ke6) 35. d7 Be7 {intending ...Rb8.} 36. a5 ({Much less strong is} 36. Rd1 $6 Bd8 $16) 36... bxa5 37. Nxa5 Bb4 38. Ra1 Bc3 {[#]} 39. Ra2 (39. Ra3 $1 $18 {[%CAl Ra3c3]} Bxa5 40. Rxa5) 39... Rd8 $11 40. Nc6 Rxd7 { [%CAl Rd7d1]} 41. g3 (41. Kf1 {is more complex.} Ke6 42. Ke2 g6 43. Nxa7 Kd5 44. Rc2) 41... Ke6 42. Ra3 Bf6 43. Ra6 Kd5 44. Nxa7 Rb7 45. b6 Kc5 46. Nc8 Rb8 47. Ra2 Kc6 48. Rc2+ Kd7 $1 49. Na7 Rxb6 50. Rd2+ Ke6 51. Nc8 Rc6 52. Na7 Rc5 53. Kg2 Be5 54. Rd8 Bc7 55. Rg8 Be5 56. Rd8 h6 57. h4 Bf6 58. Rb8 f4 59. Nb5 fxg3 60. fxg3 Be5 61. Rb6+ Kd7 62. Kf3 Rc4 63. Ra6 Rb4 64. Na3 Rb3+ 65. Ke4 Bxg3 66. Nc4 Ke7 ({Black should play} 66... Rb4 $15 67. Kd5 Rb5+ 68. Ke4 Bxh4 69. Ra7+ Ke6 70. Rxg7 Kf6) 67. h5 (67. Kf5 {is more complex.} Bf2 68. Ne5 Rb5 69. Re6+ Kd8 70. Rg6) 67... Rb4 68. Kf3 {With the idea Na5.} Bc7 69. Rc6 (69. Ne3 $1 $11 Rb5 70. Ke4) 69... Kd7 (69... Bh2 {feels hotter.} 70. Rc5 Ke6 71. Ke4 Bb8 72. Kf3 Rb3+) 70. Rc5 Rb3+ (70... Bb8 $15) 71. Kg4 Rg3+ 72. Kh4 Rg1 73. Ne5+ Kc8 74. Ng6 Kb7 75. Rd5 {The position is equal.} Rh1+ 76. Kg4 Rg1+ 77. Kh4 Kc6 78. Ne7+ Kb6 79. Ng6 Bg3+ 80. Kh3 Be1 81. Rd1 Rg3+ 82. Kh4 {Strongly threatening Rb1+.} Rg1+ (82... Re3+ {seems wilder.} 83. Kg4 Ba5 84. Kf4 Rh3 85. Kg4 Rh2) 83. Kh3 Rg3+ 84. Kh4 {Threatens to win with Rb1+.} Re3+ 85. Kg4 Bc3 86. Nf4 Kc5 (86... Re4 {seems wilder.} 87. Kf3 Rc4 88. Rb1+ Ka5 89. Rb7 Rc5) 87. Rd3 Rxd3 88. Nxd3+ {KB-KN} Kd4 89. Nf4 Ke5 90. Ng6+ Ke4 91. Nh4 (91. Nf4 { with more complications.} Be5 92. Ne6 Bb2 93. Nf4 Bd4 94. Ne6) 91... Bf6 { And now ...Bxh4 would win.} (91... Be5 {is more complex.} 92. Ng6 Kd5 93. Kf5 Bd4 94. Nf4+ Kd6) 92. Nf5 Ke5 (92... Be5 {is interesting.} 93. Ne7 Bb2 94. Nf5 Kd5 95. Nxh6 gxh6 96. Kg3 Kd4) 93. Nxg7 Bxg7 {KB-KP} 94. Kg3 $1 Kf5 95. Kg2 Kg4 96. Kh1 Kxh5 97. Kg2 Kg4 98. Kh1 h5 99. Kg1 h4 100. Kh1 h3 101. Kg1 $1 Kg3 102. Kh1 h2 {Black defended with fortune. Weighted Error Value: White=0.20/Black=0. 18} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "1.3"] [White "Aronian, Levon"] [Black "Dominguez Perez, Leinier"] [Result "1/2-1/2"] [ECO "D02"] [WhiteElo "2781"] [BlackElo "2758"] [Annotator "TA"] [PlyCount "120"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,120,13,13,11,17,8,14,5,9,6,19,11,12,11,19,7,22,14,17,7,12,0,0,0,10,0, 0,0,16,18,18,12,16,0,0,0,0,0,10,11,14,15,19,13,17,0,21,21,26,-16,5,0,0,0,0,0,8, 8,8,8,19,0,33,32,53,0,53,8,75,62,77,0,52,0,45,8,17,16,46,15,54,8,45,0,32,41,46, 33,33,0,35,0,20,0,30,0,0,-17,-36,-22,-32,-62,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 c5 5. Nbd2 Qb6 6. Rb1 {D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Bd6 7. dxc5 Qxc5 {[#]} 8. b4 $146 ({ Predecessor:} 8. Bd3 Nbd7 9. b4 Qc7 10. Bxd6 Qxd6 11. c4 O-O 12. O-O b6 13. cxd5 Qxd5 14. Nc4 {1/2-1/2 (26) Fernandez Ballon,A (2361)-Rheinstaedtler,K (2367) Remote email 2012}) 8... Qc7 9. Bxd6 Qxd6 10. c4 O-O 11. Be2 a5 12. b5 b6 13. cxd5 exd5 14. O-O Nbd7 15. Qa4 Bb7 16. Rfd1 Rac8 17. Bf1 Rfe8 18. Rbc1 Rxc1 19. Rxc1 Rc8 20. Rxc8+ Bxc8 21. g3 Nc5 22. Qd4 Ne6 23. Qc3 Qc5 24. Qe5 Nd7 25. Qb2 Qd6 26. h4 h6 27. Nb3 Ndc5 28. Nbd4 Nxd4 29. Qxd4 Bd7 30. Bd3 Ne6 31. Qb2 Nc5 32. Qc3 Kf8 33. Nd4 Qf6 34. Qc2 Ke7 35. Bf5 Be8 36. Bh3 g6 37. h5 (37. Qb2 $14) 37... Kd6 (37... gxh5 $11 38. Qd1 h4) 38. Qe2 Ne4 (38... Bd7 $11 { remains equal.} 39. Bg2 Ne6) 39. Bg2 {aiming for Bxe4.} Nc5 40. Bh3 Ne4 41. Kg2 (41. hxg6 $14 fxg6 42. Bg2) 41... Nc5 42. Qd1 Ne4 43. Qc2 Nc5 44. Bg4 Qe5 45. Qe2 Qe4+ 46. Kh2 (46. Bf3 $5 {[%CAl Rf3e4]} Qb1 47. Qd2 $14) 46... Qe5 47. Qf3 Ke7 48. hxg6 fxg6 49. Bh3 h5 50. Qe2 Kd6 51. Bg2 Bd7 (51... h4 $5 {[%CAl Rh4g3] }) 52. Qf3 h4 53. Kg1 hxg3 54. fxg3 Ke7 55. Qxd5 Qxe3+ (55... Qxg3 $15 56. Nc6+ Bxc6 57. bxc6 Qxe3+ 58. Kh2 Qf4+ 59. Kg1 Qe3+ 60. Kh2 Qf4+ 61. Kh1 Qc1+ 62. Kh2 Qf4+) 56. Kh2 $11 {The position is equal.} Qh6+ 57. Kg1 Qc1+ 58. Kh2 Qh6+ 59. Kg1 Qe3+ 60. Kh2 Qh6+ {Weighted Error Value: White=0.14/Black=0.14} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "1.4"] [White "Christiansen, Johan-Sebastian"] [Black "Le, Quang Liem"] [Result "0-1"] [ECO "A13"] [WhiteElo "2618"] [BlackElo "2709"] [Annotator "TA"] [PlyCount "110"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,110,12,19,18,12,0,4,3,4,2,0,0,15,0,6,0,14,0,23,27,37,37,24,-52,-32, -89,-50,-43,-53,-63,-61,-87,-44,-124,-55,-78,-78,-122,-125,-83,-59,-134,-136, -160,-133,-130,-130,-144,-83,-110,-108,-374,-348,-388,-408,-369,-333,-581,-554, -508,-362,-2723,-983,-1014,-982,-1058,-1007,-1082,-1030,-929,-398,-327,-8,-8,0, -381,363,64,78,38,42,39,28,0,313,313,343,-408,-393,-1416,-1363,-1458,-1128, -8033,-8033,-6357,-4718,-2156,-2018,-29987,-29988,-29988,-29989]} 1. c4 e6 2. g3 d5 3. Bg2 dxc4 4. Qa4+ c6 5. Qxc4 b5 6. Qc2 {A13: English Opening: 1...e6.} Bb7 7. Nc3 {was the old line (7.a4).} a6 8. a4 {The position is equal.} Nd7 9. Nf3 Ngf6 10. O-O Rc8 11. d3 Be7 12. e4 O-O 13. h3 {has lost popularity (13.Rd1) .} Qb6 $5 {[%mdl 4] A promising side line.} 14. Be3 c5 15. Qe2 {[#]} Rfd8 $146 ({Predecessor:} 15... Ba8 16. Rfb1 Qb8 17. axb5 axb5 18. Bf4 Qb6 19. Nd2 Bc6 20. Be3 Qc7 21. Nb3 Ra8 22. Rxa8 Rxa8 {1/2-1/2 (112) Rapport,R (2760)-Sprenger, J (2482) Karlsruhe 2020}) 16. g4 (16. axb5 $11 axb5 17. b4) 16... Bc6 17. Nh2 ( {White should try} 17. axb5 $15 axb5 18. g5) 17... Qb7 18. g5 {aiming for axb5. } Ne8 19. b3 Ne5 20. Rfd1 Ng6 21. f4 (21. axb5 $15 axb5 22. Nf3) 21... c4 ( 21... b4 $17 22. Na2 Qb8) 22. bxc4 bxc4 23. d4 Bb4 $1 {[%CAl Rb4c3]} 24. Rab1 Qe7 $36 {[%mdl 2048] Black has the initiative.} 25. Qb2 (25. Rdc1 $15) 25... Bxc3 $17 26. Qxc3 Nd6 ({But not} 26... Bxa4 27. Rdc1 $17) 27. Qc2 Qe8 28. Ra1 Rb8 (28... Nh4 $142 29. Bh1 f5) 29. Ng4 Rb3 30. a5 $2 {[%mdl 8192]} (30. Re1 $17 {is the only way for White.}) 30... Nh4 $19 31. Bh1 h5 32. gxh6 {Strongly threatening d5.} f5 33. Bf2 $2 (33. d5 exd5 34. exf5 Rxe3 35. hxg7 Kxg7 36. f6+ Kh8 37. f7) 33... Rxh3 34. d5 {[#]} Qh5 $1 35. Qe2 {[#]} (35. Bxh4 Rxh4 36. h7+ Kxh7 37. Nf2 Qg6+ 38. Bg2) 35... fxg4 (35... Rxh1+ $142 $1 {[%mdl 512]} 36. Kxh1 Nf3+ 37. Kg2 Qxg4+ {[%mdl 64] Double Attack} 38. Bg3 Nh4+ {[%mdl 64] Discovered Attack} 39. Kf2 Nxe4+ 40. Qxe4 fxe4 41. Bxh4 Qxh4+ {[%mdl 64] Double Attack} 42. Kg2 Qg4+ 43. Kh2 exd5 44. h7+ Kh8 45. Rg1 Qh4+ 46. Kg2 d4 47. Raf1 Rb8 48. Rf2 e3+ {[%mdl 64] Discovered Attack} 49. Rf3 Rb2+ 50. Kf1 Bxf3 51. Rg6 Qf2#) 36. Bxh4 Rxh4 37. Bg2 exd5 38. exd5 {[#]} Re8 $1 39. Qb2 { [#]} (39. Qf2 Bb5) 39... Qxh6 (39... c3 $142 $1 40. Qf2 (40. Qxc3 Qxh6) 40... Bb5) 40. dxc6 Nb5 $2 ({Don't take} 40... Qxf4 41. Qf2 $19) (40... g3 $19 41. Re1 Rxf4 42. Bd5+ Kh7 43. Rxe8 Nxe8 44. Qc2+ g6) 41. Qf2 $11 Rf8 {And now ... g3 would win.} 42. Rd7 $2 {[%mdl 8192] [#]} (42. Rf1 $11) 42... Rxf4 $4 { [%mdl 8192] [#]} (42... g3 $1 $19 {[%CAl Rg3f2]} 43. Bd5+ Kh8 44. Qxg3 Nd4) 43. Qg3 (43. c7 $1 $18 Nxc7 44. Rd8+ Kf7 45. Qa7) 43... Qg5 {( -> ...Qc5+)} 44. Rd5 {[%mdl 1024] White has strong compensation.} Qf6 45. Re1 Rh6 $1 46. Rd7 { Hoping for c7.} Qg5 $2 {[%mdl 8192]} (46... Kh7 $11 {and Black stays safe.}) 47. c7 $18 Rf8 {intending ...Qc5+.} 48. Qe3 {[%mdl 8192]} (48. Rd5 $18 { and all is fine.} Qh4 49. Qxh4 Rxh4 50. Rd7 (50. Rc5 Rc8 $16)) 48... Qh4 $19 { [%csl Gh6][%CAl Rh4h2]} 49. Rxg7+ $2 (49. Bd5+ Kh8 50. Re2) 49... Kxg7 { [%csl Gh6][%CAl Rh4h2]} 50. Qe5+ Qf6 51. Qc5 Qd4+ 52. Qxd4+ Nxd4 53. Re7+ Kf6 54. Rd7 Ne2+ 55. Kf2 Ke6+ {[%mdl 64] Discovered Attack. Weighted Error Value: White=0.95/Black=0.73} 0-1 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "1.5"] [White "Carlsen, Magnus"] [Black "Karjakin, Sergey"] [Result "1/2-1/2"] [ECO "C65"] [WhiteElo "2847"] [BlackElo "2757"] [Annotator "TA"] [PlyCount "132"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,132,6,9,10,28,20,27,20,26,1,29,16,27,27,19,8,22,23,25,21,25,35,28,43, 54,47,41,43,45,47,39,21,25,25,28,19,19,18,27,25,39,25,67,64,52,49,67,12,81,84, 91,86,87,87,139,147,294,0,105,99,89,18,15,15,19,19,19,19,27,21,25,18,16,16,16, 16,16,8,8,8,17,0,0,0,0,0,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 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. b4 Bd6 10. Nbd2 h6 11. Re1 Re8 12. Bb2 a6 13. a4 {[#]} Be6 $146 ({Predecessor:} 13... Bf5 14. Ne4 Nxe4 15. dxe4 Be6 16. Bxe6 Rxe6 17. Bc1 a5 18. b5 Nb8 19. Qd5 Nd7 {1/2-1/2 (30) Leko,P (2679)-Harikrishna,P (2733) Germany 2018}) 14. b5 Na5 15. Bxe6 Rxe6 16. c4 Qe7 17. Qc2 Nd7 18. Re2 Re8 19. Rae1 axb5 20. axb5 b6 21. d4 exd4 $1 22. Rxe6 fxe6 23. Bxd4 Bb4 24. h3 Nb7 25. Re2 Bxd2 26. Rxd2 Nd6 27. Re2 Qf7 28. Ne5 (28. Qc3 $14) 28... Nxe5 (28... Qf4 $1 $11) 29. Bxe5 $16 Qf5 30. Qc3 Re7 31. Kh2 Nb7 (31... Rf7 $142) 32. Qg3 Na5 {[#]} (32... Qg5 $16 {was called for.}) 33. Qc3 $2 ({Less strong is} 33. Bxc7 Nxc4 34. Bxb6 Qxb5 $16) (33. c5 $1 $18) 33... Rd7 (33... Nb7 $1 $11) 34. c5 {Threatens to win with cxb6.} Rd3 35. Qc2 ( 35. Qa1 $16) 35... Rd5 $1 $11 {[%mdl 64] ...Qxc2 is the strong threat. Double Attack} 36. cxb6 Qxc2 37. Rxc2 cxb6 {[%mdl 4096] Endgame KRB-KRN} 38. Rc8+ Kh7 39. f4 {aiming for Rc7.} g5 $1 40. Rc7+ Kg8 $1 {The position is equal.} 41. Rg7+ Kf8 42. Rg6 Nc4 43. Bc3 (43. Ba1 {keeps more tension.} gxf4 44. Rxe6 Rxb5 45. Rf6+ Kg8 46. Rxf4 Rb1 47. Rxc4 Rxa1 48. Rb4) 43... gxf4 44. Rxe6 Rxb5 45. Rxh6 {Black must now prevent Rf6+.} Rf5 46. Rc6 b5 47. Rc7 f3 48. gxf3 Rxf3 49. Bd4 Rd3 50. Bf6 Rf3 51. Bd4 Rd3 52. Bc5+ Kg8 53. Rb7 Rb3 54. h4 Ne5 55. h5 (55. Bb6 {with more complications.} b4 56. h5 Ng4+ 57. Kg2 Rd3 58. Bc7) 55... Rd3 56. Kg2 Rd5 57. Be3 (57. Rb8+ {feels hotter.} Kf7 58. Rxb5 Nd7 59. Rb7 Rg5+ 60. Kf2) 57... Nc4 58. Bf4 Rxh5 59. Kf3 Kf8 60. Ke4 Ke8 61. Rg7 Kf8 62. Rg5 (62. Rb7 {is more complex.}) 62... Rxg5 63. Bxg5 b4 64. Kd4 {[#]} b3 $1 {Hoping for ...b2.} 65. Bc1 {[#]} (65. Bh6+ Kf7) 65... b2 $1 66. Bxb2 $1 Nxb2 {Weighted Error Value: White=0.12/Black=0.12} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "1.6"] [White "Nakamura, Hikaru"] [Black "Mamedyarov, Shakhriyar"] [Result "1-0"] [ECO "C80"] [WhiteElo "2736"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "87"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 24,87,39,44,38,38,40,29,30,27,33,41,32,24,23,5,2,0,71,67,66,58,61,60, 106,106,106,106,103,103,158,141,137,126,232,232,232,232,232,232,270,263,258, 249,252,241,221,245,226,216,447,429,362,362,530,515,550,533,29965,29967,29969, 29968,29983,29984,29983,29979]} 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. Nbd2 Nc5 10. c3 d4 11. Bxe6 Nxe6 12. cxd4 Ncxd4 13. a4 Bb4 {is now more promising than 13...Be7. C80: Open Ruy Lopez: Sidelines and 9 Nbd2.} 14. axb5 Nxb5 (14... axb5 $6 15. Rxa8 Qxa8 16. Nxd4 $18) 15. Qa4 Bxd2 {White has an edge.} 16. Bxd2 O-O 17. Rfd1 {Bb4 is the strong threat.} c5 18. Be3 Qb6 19. Rac1 {[#]} a5 $146 ({Predecessor:} 19... Nbc7 20. Qc2 Rfd8 21. Rxd8+ Rxd8 22. h3 Rb8 23. Bxc5 Qxb2 24. Qxb2 Rxb2 25. Bd6 Rb7 {1/2-1/2 (56) Rudenko,V (2220)-Sande,O (2196) ICCF email 2011}) 20. Qc4 { [%CAl Re3c5]} Rac8 {[#]} (20... Rfd8 $11 {remains equal.}) 21. Ng5 $1 $16 Nxg5 22. Bxg5 Qb7 23. Be3 $36 {[%mdl 2048] Black is under pressure.} Rfe8 {Black is on the road to losing.} 24. Qd5 Qb8 25. Rxc5 Rcd8 26. Qf3 ({Reject} 26. Rxb5 $6 Rxd5 27. Rdxd5 Qc7 $11) 26... h6 (26... Nc7 $142) 27. Rxd8 Rxd8 28. h3 Nd4 ( 28... Nc7 $16 29. Rxa5 Qxb2) 29. Bxd4 $18 Rxd4 30. Rxa5 {[%mdl 4096] [#] Endgame Strongly threatening Ra8! KQR-KQR} Rd8 31. b3 Qb4 32. Ra8 Qe1+ 33. Kh2 Qxe5+ 34. g3 Rxa8 35. Qxa8+ {KQ-KQ} Kh7 36. Qf3 f5 $2 (36... Kg6 37. b4 Qb5) 37. b4 {[%CAl Bb3b4,Bb4b5,Bb5b6][%mdl 32]} Qb5 38. Qc3 Qe2 (38... f4 $142 39. gxf4 Kg8) 39. Qc5 Qe4 40. b5 f4 41. g4 {White mates.} Qf3 42. b6 g6 43. Qc2 Kg8 44. Qxg6+ {Weighted Error Value: White=0.02/Black=0.50} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "1.7"] [White "Firouzja, Alireza"] [Black "So, Wesley"] [Result "1-0"] [ECO "D02"] [WhiteElo "2759"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "107"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,107,-6,22,11,14,10,24,0,0,0,9,9,19,11,49,31,44,4,31,0,6,0,14,-24,26, 27,25,31,54,43,31,34,37,37,22,0,14,15,41,50,27,43,44,-6,0,0,0,0,0,-35,-35,-88, -89,-67,19,-69,-78,-64,-21,-22,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 5102,5035,3087,2403,1958,1951,29974,29975,29975,29976,29975,29976,29979,29978] } 1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. e3 Nc6 5. Nbd2 e6 6. c3 cxd4 7. exd4 { D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Nh5 8. Be3 Bd6 9. Bb5 $5 {[%mdl 4] White has an edge. An interesting side line.} O-O 10. O-O {[#]} Qc7 $146 ({Predecessor:} 10... Nf6 11. Bd3 h6 12. h3 Qc7 13. Re1 b6 14. Rc1 Bb7 15. a3 Rac8 16. Bb1 Rfe8 {1/2-1/2 (43) Pietrobono,A (2288) -Ilyasov,A (2391) ICCF email 2017}) 11. Re1 a6 12. Bd3 g6 (12... Nf4 $5 { [%CAl Rf4d3]} 13. Bc2 f6 $11) 13. Rc1 b5 14. a4 bxa4 15. Qxa4 Bd7 16. Qc2 Rab8 17. Nb3 Qb6 (17... a5 {is interesting.} 18. Bh6 Rfe8 19. Nbd2 a4 20. h3 Rb6) 18. Nc5 Bxc5 19. dxc5 Qxb2 20. Qxb2 Rxb2 21. Bxa6 e5 22. Bh6 Ra8 23. Ra1 Ng7 24. c4 (24. Nxe5 $2 Nxe5 25. h3 f6 $19) 24... d4 25. Bb5 Rxa1 26. Rxa1 f6 27. Nd2 Nf5 28. Ne4 Kf7 29. Bd2 d3 30. f4 exf4 31. Bc3 ({White should play} 31. Bxf4 $15 Nfd4 32. Kf1) 31... Rc2 $17 32. Ba4 ({But not} 32. Bxf6 $2 d2 $19) 32... Nfd4 (32... Re2 $15 33. Nxf6 {[%mdl 64] [#] Double Attack} f3 $1) 33. Bxc2 (33. Bxd4 $11 Nxd4 34. Bxd7) 33... dxc2 $15 34. Bb2 Nb3 35. Re1 Ne5 { [#] And now ...Nd3 would win.} 36. Nxf6 $1 Nd3 37. Nxd7 Nxe1 $11 {[%mdl 4096] Endgame KBN-KNN} 38. Ne5+ Ke6 39. c6 {aiming for c7.} Kd6 $132 {[%mdl 2048] Black is not keeping still} 40. Kf2 {Black must now prevent Ba3+.} Nxg2 $1 41. Ba3+ Kc7 $1 {...Nh4 is the strong threat.} ({Not} 41... Kxe5 $2 42. c7 $18) 42. Kxg2 c1=R 43. Bxc1 Nxc1 {KN-KN} 44. Kf3 g5 45. Kg4 h6 46. Kh5 f3 47. Nxf3 Kxc6 $2 {[%mdl 8192] This costs Black the game.} (47... Nd3 $11) 48. Kxh6 $18 g4 49. Ne5+ Kc5 50. Kg5 Kd4 51. Nxg4 {White mates.} Ne2 52. h4 Ng3 53. Nf6 Kxc4 54. Kg4 {Weighted Error Value: White=0.10/Black=0.26} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.24"] [Round "1.8"] [White "Duda, Jan-Krzysztof"] [Black "Praggnanandhaa R"] [Result "0-1"] [ECO "D24"] [WhiteElo "2729"] [BlackElo "2608"] [Annotator "TA"] [PlyCount "100"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,100,27,36,37,46,45,45,38,46,39,45,46,48,45,34,0,47,47,77,58,82,49,65, 0,0,0,0,0,4,16,4,2,8,0,0,0,0,0,0,0,87,81,79,22,20,20,17,22,15,0,11,24,54,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,97,0,0,-6,-15,-87,-118,-177,-187,-213,-221,-366, -370,-2274,-2173,-2098,-1785,-5265,-5069,-4986,-4790,-1431,-1218]} 1. d4 { Ftacnik,L} Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e4 b5 6. e5 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3.} Nd5 7. Nxb5 Nb6 8. Be2 {White is slightly better.} Nc6 {[%CAl Bb8c6,Bc6b4,Bb4d3][%mdl 32]} 9. O-O Be7 10. Be3 O-O 11. Qc1 {[#]} Nb4 $1 $146 {[%mdl 8] A relevant novelty.} ({Predecessor:} 11... Ba6 12. Nc3 Bb7 13. Rd1 Rb8 14. d5 Nb4 15. dxe6 Qe8 16. exf7+ Qxf7 17. Ne1 Kh8 { 0-1 (37) Wang,Y (2737)-Mareco,S (2606) Baku 2016 CBM 175 [Ftacnik,L]}) 12. a3 ( 12. Bxc4 Nxc4 13. Qxc4 Ba6 $15) 12... Nd3 13. Qc2 {Strongly threatening b3.} c6 14. Nc3 (14. Bxd3 $2 cxd3 15. Qxd3 (15. Qxc6 $2 Bd7 $19) 15... cxb5 $19) 14... Ba6 15. Rfd1 {aiming for b3.} Nd5 16. b3 (16. Qd2 $14) 16... cxb3 $11 17. Qd2 Nxc3 $1 (17... Nxe3 $6 18. fxe3 c5 19. Bxd3 $16) 18. Qxc3 {[%mdl 64] Double Attack} Nb4 19. Bxa6 Nxa6 20. Qxb3 Nc7 21. Rac1 Qd7 22. Bg5 Nd5 23. Bxe7 Nxe7 24. Ng5 Rfd8 (24... h6 $11 25. Ne4 Rab8) 25. Qd3 $16 Ng6 26. Qf3 ({White should play} 26. h4 $1 $16) 26... Rab8 $11 27. g3 Rb5 28. Ne4 Rd5 29. Nd6 f6 $1 {[%CAl Rf6e5]} 30. Rb1 c5 31. Rb7 (31. Nb7 $14 Rf8 32. Nxc5) 31... Nxe5 $1 32. Qxd5 exd5 33. Rxd7 Nxd7 {[%mdl 4096] Endgame KRN-KRN} 34. Nb7 {[%mdl 64] Double Attack} Rc8 35. dxc5 Rc7 36. c6 Nb6 37. Na5 Kf7 38. Kg2 Ke6 39. Nb7 Ke5 (39... f5 $11) 40. Re1+ ({White should try} 40. f4+ $16 Kf5 41. Nd6+ Kg6 42. Rc1) 40... Kd4 41. Nd8 {And now Ne6+ would win.} Kd3 $1 42. Re3+ {[#]} (42. Rc1 $11 {remains equal.}) 42... Kd2 $1 $17 {[%CAl Yg8f7,Yf7e6,Ye6e5,Ye5d4,Yd4d3, Yd3d2]} 43. Re6 {[#]} (43. Ne6 $17 {was necessary.} Rxc6 44. Nd4) 43... Nc4 $1 $19 44. f4 Kc3 45. Nb7 (45. Kf2 {is a better defense.}) 45... d4 ({Less strong is} 45... Nxa3 46. Nd6 $17) 46. Nd6 $2 (46. Nc5 d3 47. Ne4+ Kc2 48. Nf2) 46... Nxd6 {Black is clearly winning.} ({Worse is} 46... Ne3+ 47. Kf3 $16 (47. Rxe3+ $2 dxe3 48. Kf3 Kd3 $19)) 47. Rxd6 d3 48. Kf2 d2 49. Kf3 Kc2 50. Ke4 Re7+ { Weighted Error Value: White=0.42/ Black=0.09} 0-1 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.24"] [Round "2.1"] [White "Jones, Gawain C B"] [Black "Praggnanandhaa R"] [Result "1/2-1/2"] [ECO "B30"] [WhiteElo "2670"] [BlackElo "2608"] [Annotator "TA"] [PlyCount "73"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,73,23,0,19,0,0,0,0,-7,0,0,0,0,0,0,0,-20,-30,0,0,0,0,0,0,0,0,0,-3,-16, -10,0,0,0,0,-15,-15,-15,-15,-39,0,-45,-45,-45,-45,-45,-45,-45,-45,-45,-45,-45, -45,-45,-45,-38,-45,-45,0,-38,0,-38,-38,-38,0,-38]} 1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 e6 5. O-O a6 6. Bd3 Nc6 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} 7. b3 d6 8. Bb2 Be7 9. Re1 Bf6 {[#]} 10. e5 $146 ({Predecessor: } 10. Qc1 Nge7 11. Nd1 Bxb2 12. Qxb2 e5 13. Ne3 O-O 14. c3 f5 15. Bc4+ Kh8 16. d3 {1/2-1/2 (31) Souleidis,G (2424)-Perunovic,M (2601) Germany 2019}) 10... Nxe5 11. Nxe5 Bxe5 12. Rxe5 dxe5 13. Qg4 Nf6 14. Qxg7 Rg8 15. Qh6 Bd7 16. Ne4 Nxe4 17. Bxe4 Qg5 $1 {[%CAl Rg5h6]} 18. Qxg5 Rxg5 19. h4 Rg8 20. Bxe5 Bc6 21. Bxc6+ bxc6 $11 {[%mdl 4096] Endgame KRR-KRB} 22. d3 Ke7 23. Re1 f6 24. Bb2 c4 25. bxc4 Rab8 26. Bc3 Rb7 {[%mdl 1024] Black has compensation.} 27. g3 Rgb8 28. Kg2 Rb1 29. Re2 Rc1 30. Kf3 h5 31. Ke4 c5 32. Kf4 Rbb1 (32... Rg1 {looks sharper.} 33. a4 Kf7 34. Ke4 Rf1 35. Be1 Rh1) 33. Ke4 Rb8 34. Ke3 Rbb1 35. Ke4 Kf7 36. Kf4 Ke7 37. Ke4 {Weighted Error Value: White=0.06/Black=0.06} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "2.2"] [White "So, Wesley"] [Black "Duda, Jan-Krzysztof"] [Result "0-1"] [ECO "A46"] [WhiteElo "2770"] [BlackElo "2729"] [Annotator "TA"] [PlyCount "40"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,40,61,14,132,152,173,160,169,151,175,187,153,152,192,-254,-251,-252, -260,-254,-227,-274,-283,-297,-260,-279,-241,-331,-298,-584,-566,-564,-546]} 1. d4 Nf6 2. Nf3 e6 3. Bf4 c5 4. e3 Qb6 5. Nc3 {[%CAl Bb1c3,Bc3b5,Bb5d6][%mdl 32]} cxd4 6. exd4 (6. Nb5 $5 {[%CAl Rb5c7]} Na6 7. exd4 $14 (7. Qxd4 Bc5 $11)) 6... Qxb2 {A46:1 d4 Nf6 2 Nf3 e6: Torre, London and Colle Systems.} (6... Be7 $11) 7. Nb5 $16 {aiming for Rb1.} Bb4+ 8. Nd2 {Threatens to win with Rb1.} Nd5 { [#]White is clearly better.} 9. Rb1 $1 Qxa2 {[#]} 10. Rxb4 $1 {[%mdl 512]} Nxb4 11. Nd6+ $1 Ke7 {[#]} 12. Bc4 $146 {[%mdl 8192]} (12. Qh5 $18 {Qg5+ would kill now.} N8c6 13. Qxf7+ Kd8 14. Qxg7 Qa1+ {[%mdl 64] Double Attack} 15. Ke2 Nxd4+ 16. Qxd4 $3 {[%mdl 512]} Qxd4 17. Bg5+ Kc7 18. Nb5+ {[%mdl 64] Double Attack} Kb6 19. Nxd4) ({Predecessor:} 12. Qh5 Rf8 13. Qg5+ {1-0 (13) Saez Coma,A (2069) -Campos Cayuelas,A (1973) Cerdanyola del Valles 2013}) 12... Nxc2+ $19 { [%mdl 64] Double Attack} ({Not} 12... Qxc2 13. Qh5 $17) 13. Kf1 {[#]} Qa1 { [%CAl Ra1d1]} 14. Qxa1 Nxa1 15. Ke2 Nc2 16. d5 Na6 17. Rc1 Nab4 18. Nf3 b6 ({ Less strong is} 18... exd5 19. Bb3 $19) 19. Bb3 $2 (19. Kd2 {was called for.}) 19... Ba6+ 20. Kd2 {[#]} Nd3 $1 {[%mdl 64] Double Attack. Weighted Error Value: White=0.60/Black=0.19} 0-1 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "2.3"] [White "Mamedyarov, Shakhriyar"] [Black "Firouzja, Alireza"] [Result "1-0"] [ECO "D37"] [WhiteElo "2770"] [BlackElo "2759"] [Annotator "TA"] [PlyCount "91"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,91,2,2,6,18,16,20,10,19,12,22,14,21,24,31,37,34,28,25,22,39,39,63,56, 64,61,76,64,410,417,414,410,403,400,472,468,489,472,514,476,475,454,508,505, 445,431,405,383,613,621,685,589,553,572,566,570,538,458,747,727,782,734,622, 583,29983,29984,29986,29987,29987,29988,29988,29977,29976,29977,29975,29976, 6327,5281,2471,4778,1981,1861,1478,1365]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. e3 a6 6. b3 {D37: Queen's Gambit Declined: 5 Bf4.} b6 7. Bb2 Bd6 8. g3 {The position is equal.} Bb7 9. Bg2 O-O 10. O-O {[#]} Ne4 $146 ({Predecessor:} 10... Qe7 11. Qe2 Rfe8 12. Rfd1 dxc4 13. bxc4 Bb4 14. a3 Ba5 15. Nd2 Bxg2 16. Kxg2 e5 {0-1 (40) Okrugin,S (2334)-Dreev,A (2657) Yaroslavl 2018}) 11. Qc2 f5 12. Ne2 Qe7 13. Nf4 a5 14. Ne5 Ndf6 15. Rac1 a4 16. bxa4 Qe8 17. f3 Ng5 18. c5 $36 {[%mdl 2048] White has the initiative.} Bxe5 {[%mdl 8192] This costs Black the game.} ({Black should try} 18... bxc5 $14 19. dxc5 Bxe5 20. Bxe5 Qe7) 19. dxe5 $18 Nh5 20. cxb6 cxb6 21. Ba3 Nxf4 22. exf4 ({Don't take} 22. gxf4 Nf7 $18 ) 22... Nf7 23. Bxf8 Qxf8 24. Rfe1 Qb4 25. Qb3 Qd4+ 26. Qe3 Qb4 27. Rb1 Qxa4 28. Qxb6 Bc8 (28... Nd8 29. Rec1 d4) 29. Rec1 h6 30. Qc6 {[#] Black must now prevent Qxa4.} Qa7+ 31. Kh1 Bd7 32. Qb7 Qa4 33. Bf1 g5 (33... Nd8 $142) 34. Rc7 Be8 35. Bb5 Qa3 36. Rb3 Qxa2 {[#] ...Qa1+ is the strong threat.} 37. Bxe8 Rxe8 38. Rxf7 Qa1+ 39. Kg2 Qa2+ 40. Kf1 Qa1+ 41. Rb1 Qxb1+ 42. Qxb1 Kxf7 43. fxg5 { White is clearly winning.} hxg5 44. Qb7+ Re7 45. Qc8 Ra7 46. Qh8 {Weighted Error Value: White=0.06/Black=0.44} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "2.4"] [White "Karjakin, Sergey"] [Black "Nakamura, Hikaru"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2757"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "47"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 27,28,0,2]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. dxe5 Nxb5 7. a4 Nbd4 8. Nxd4 d5 9. exd6 Nxd4 10. Qxd4 Qxd6 11. Qe4+ Qe6 12. Qd4 Qd6 13. Qe4+ Qe6 14. Qd4 Qd6 {[#] Predecessor:} 15. Qe3+ $146 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} Be6 16. Nc3 Qc6 17. Nb5 Bc5 18. Qc3 O-O 19. Bf4 Rfc8 20. Nd4 Bxd4 21. Qxd4 Rd8 22. Qb4 a5 23. Qb5 Qxb5 24. axb5 {1/2-1/2 (32) Wei,Y (2732)-Grischuk,A (2777) Chess.com INT 2020} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "2.5"] [White "Le, Quang Liem"] [Black "Carlsen, Magnus"] [Result "0-1"] [ECO "D37"] [WhiteElo "2709"] [BlackElo "2847"] [Annotator "TA"] [PlyCount "104"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,104,19,36,25,36,29,14,32,30,31,36,17,14,14,14,14,13,17,13,6,4,5,10,0, 25,14,27,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-3,-3,-3,0,-5,-7,-8,-5,-4, 0,-8,-1,-8,0,-52,-57,-35,-37,-143,-143,-150,-150,-143,-68,-143,-150,-141,-136, -179,-175,-213,-94,-94,-100,-264,-264,-1582,-1445,-1481,-1133,-29962,-29961, -29962,-29963,-29971,-29956,-29975,-29976]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 h6 5. g3 Bd6 6. Bg2 {D37: Queen's Gambit Declined: 5 Bf4.} O-O {6...Nc6 is vanishing.} 7. O-O Nc6 8. b3 {The position is equal.} dxc4 9. bxc4 e5 10. Nxe5 Nxe5 11. c5 Bxc5 12. dxe5 {[#]} Qxd1 $146 ({Predecessor:} 12... Ng4 13. Qc2 Nxe5 14. Rd1 Bd6 15. Ba3 Bd7 16. Bxd6 cxd6 17. Bxb7 Rb8 18. Bg2 Qc7 {1-0 (49) Lenderman,A (2624)-Kambrath,Y (2375) chess.com INT 2021}) 13. Rxd1 Ng4 14. Ne4 Bb6 15. a4 {Threatens to win with a5.} Bf5 {...Bxe4 is the strong threat.} 16. e3 a5 ({But not} 16... Nxe5 17. a5 $16) 17. Bb2 Rfe8 18. Nd2 Nxe5 19. Bxe5 Rxe5 20. Nc4 Rc5 21. Bxb7 Rb8 22. Nxb6 cxb6 23. Ba6 Kf8 24. Rd4 Ra8 25. Bb5 Rac8 26. Kg2 Ke7 27. Rad1 Rc1 28. Rxc1 Rxc1 $11 {[%mdl 4096] Endgame KRB-KRB} 29. g4 Be6 30. h4 g5 31. hxg5 hxg5 32. f3 Rc5 33. Kg3 Rc3 34. Re4 Kd6 35. f4 f6 36. Rd4+ ( 36. f5 $11 Bf7 37. Kf2) 36... Bd5 $1 $15 37. Kf2 {aiming for e4.} Kc5 38. fxg5 ({White should try} 38. f5 $15) 38... Rc2+ $1 $17 ({Don't do} 38... fxg5 39. Rd2 $15) 39. Kg3 fxg5 40. Rd1 Rg2+ 41. Kh3 {Black must now prevent Rxd5+!} Rf2 $1 42. Rc1+ Kd6 43. Rc3 Ke5 44. Bc6 {[#]} Be6 (44... Rb2 $1 $19 {is more deadly.} 45. Bb5 Rb4) 45. Kg3 Rb2 46. Bf3 $2 {[#] Now White is beyond hope.} ( 46. Bb5 $17) 46... Rb3 $1 $19 {[%CAl Rb3c3]} 47. Rxb3 (47. Rc1) 47... Bxb3 { KB-KB} 48. Bc6 Bd1 49. Kh3 Kd6 {Black mates.} 50. Bb5 Kc5 51. Kg3 Kb4 52. e4 Bxa4 {Weighted Error Value: White=0.44/Black=0.04} 0-1 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "2.6"] [White "Dominguez Perez, Leinier"] [Black "Christiansen, Johan-Sebastian"] [Result "1-0"] [ECO "B45"] [WhiteElo "2758"] [BlackElo "2618"] [Annotator "TA"] [PlyCount "59"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,59,47,20,21,20,30,19,26,12,22,26,20,0,0,12,27,-63,44,18,120,122,336, 382,1081,789,810,602,1377,1210,1352,1278,5314,5310,2843,3427,2829,2621,29987, 29988,29989,29987,29986,29987,29991,1403]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 d4 {B45: Sicilian Four Knights.} 10. Ne2 e5 11. O-O O-O {The position is equal.} 12. h3 Re8 13. b4 {[#]} a6 $146 ({Predecessor:} 13... b6 14. Bb2 a6 15. f4 exf4 16. Rxf4 Nh5 17. Rf2 Nf6 18. Nxd4 Nxd4 19. e5 Rxe5 20. Bxd4 {1-0 (54) Eynullayev,A (2271)-Davtyan,D (1907) Poti 2017}) 14. Bb2 Be6 15. f4 exf4 16. Qd2 (16. Rxf4 $11 Qd6 17. Qe1) 16... f3 ({Better is} 16... g5 $15) 17. Rxf3 $14 Ne5 {[#]} ( 17... Nd7 $11) 18. Rg3 $1 $16 Nc4 $2 {[#] Loses the game.} (18... Nfd7 $16 { keeps fighting.} 19. Nxd4 (19. Bxd4 Ng6 $16) 19... Qc7) 19. Rxg7+ $3 $18 { [%mdl 512]} Kf8 $2 (19... Kxg7 20. Qg5+ Kf8 21. Bxd4 Nxe4 22. Qh6+ {[%mdl 64] Double Attack} Ke7 23. Bxe4 Kd7 24. Bxb7 Kc7) 20. Bxc4 Bxc4 21. Nxd4 Rxe4 22. Qh6 Ke8 23. Nf5 Re6 24. Bxf6 Qxf6 25. Rg8+ Kd7 26. Rd1+ Kc7 27. Qf4+ {[%mdl 64] Double Attack. White mates.} Kb6 28. Qf2+ Kc7 29. Rxa8 Be2 30. Re1 {Weighted Error Value: White=0.27/Black=0.75} (30. Rdd8 $142 Qa1+ 31. Kh2 Qe5+ 32. g3 Kc6 33. a4 b6 34. Qg2+ Bf3 {[%mdl 64] Decoy} 35. Qxf3+ Qe4 36. Qc3+ Qc4 37. Qxc4+ Kb7 38. Qc8#) 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "2.8"] [White "Radjabov, Teimour"] [Black "Tari, Aryan"] [Result "1-0"] [ECO "D42"] [WhiteElo "2765"] [BlackElo "2639"] [Annotator "TA"] [PlyCount "71"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 21,70,11,14,0,1,11,0,0,13,0,50,42,51,45,86,79,86,93,103,66,85,54,160, 172,162,152,161,153,179,166,256,257,250,254,244,244,218,193,187,186,180,141, 141,141,143,141,676,672,29998,29999,29999]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c5 5. e3 cxd4 6. exd4 Nc6 7. cxd5 Nxd5 8. Bd3 Be7 9. O-O O-O 10. Re1 Bd7 11. a3 Rc8 12. Bb1 $5 {[%mdl 4] A promising side line. D42: Queen's Gambit Declined: Semi-Tarrasch: 5 cxd5 Nxd5 6 e3 Nc6 7 Bd3 .} Bf6 13. Qd3 {[%csl Gb1][%CAl Rd3h7]} g6 {[#]} 14. Ba2 $5 $146 {[%mdl 8] The position is equal. An interesting novelty.} ({Predecessor:} 14. Bh6 Bg7 15. Qd2 Nxc3 16. bxc3 Na5 17. Ba2 Bb5 18. Bxg7 Kxg7 19. Rab1 {1/2-1/2 (21) Laszlo,J (2283)-Kovacs,A (1994) Hungary 2012}) 14... Nce7 15. Ne5 Bc6 16. Ne4 Bg7 17. Bg5 f6 {[%mdl 64] Double Attack} 18. Nxc6 Rxc6 19. Bd2 b6 20. Nc3 Kh8 21. Re2 Nf5 (21... Nxc3 $14 22. bxc3 e5) 22. Nxd5 $16 exd5 23. Bb4 Rg8 24. Rae1 a5 25. Bc3 Rc7 (25... Rd6 $142 26. Bb3 Bh6) 26. Qb5 $18 Rd7 27. Re6 Nd6 28. Qxd5 f5 {[#]} 29. Re7 $3 {[%mdl 512]} Rxe7 30. Rxe7 {Strongly threatening Rd7!} Rf8 31. Re6 Ne4 32. Qxd8 Rxd8 33. Rxb6 Bxd4 $2 {[%mdl 8192] [#]} (33... h5 $16 34. Rxg6 Nxc3 35. bxc3 Rc8) 34. Rb8 $1 {[%mdl 576] Threatening mate with Bxd4+. Deflection} Rxb8 (34... Kg7 35. Rxd8) 35. Bxd4+ Nf6 36. Bxf6# {Weighted Error Value: White=0.06/Black=0.84} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "3.1"] [White "Tari, Aryan"] [Black "Jones, Gawain C B"] [Result "1/2-1/2"] [ECO "B76"] [WhiteElo "2639"] [BlackElo "2670"] [Annotator "TA"] [PlyCount "92"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 24,92,32,12,133,133,124,133,129,126,128,138,138,129,139,115,143,77,87, 87,173,177,188,189,181,87,187,176,202,190,187,183,204,182,204,204,197,160,162, 159,155,0,0,13,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. O-O-O d5 10. exd5 Nxd5 11. Nxc6 bxc6 12. Bd4 Bxd4 13. Qxd4 {[%CAl Rc3d5] [#] } Qa5 $146 {B76: Sicilian Dragon: Yugoslav Attack, 9 g4 and 9 0-0-0.} (13... Qb6 $11) ({Predecessor:} 13... Qb6 14. Bc4 Ne3 15. Na4 Qxd4 16. Rxd4 Nxg2 17. Re4 e5 18. Rxe5 Nh4 19. Rf1 Bh3 20. Rf2 Rfe8 21. Ra5 Re1+ {1-0 (49) Ivanchuk,V (2678)-Mamedov,R (2654) Europe Echecs INT 2021}) 14. Nxd5 $16 cxd5 15. Qxd5 Qc7 {White is clearly better.} 16. Qxa8 Bf5 {[%csl Gf5][%CAl Rc7c2] [#]} 17. Qxf8+ $1 Kxf8 {[%csl Gf5][%CAl Rc7c2]} 18. Bd3 Be6 19. Kb1 h5 20. Be4 (20. Rde1 $142) 20... Qb6 21. Rhf1 Qa5 (21... Qa6 $16 {was necessary.}) 22. b3 $18 Qe5 23. h3 Kg7 24. Rfe1 (24. Rf2 $18 {and White stays clearly on top.}) 24... Qc3 (24... Qh2 $16) 25. Re2 a5 26. Rd3 Qc5 27. a4 h4 28. Red2 Qb6 29. Kb2 Bc4 30. Rc3 Bf1 {[#]} 31. f4 $1 Qf6 32. Rf2 (32. Rd1 $16 Qxf4 33. Bf3) 32... Ba6 $11 {Strongly threatening ...Qd4.The position is equal.} 33. Rff3 Qd4 34. Rfe3 (34. Bc6 { with more complications.} e6 35. Ka2 Be2 36. Rfe3 Ba6 37. Be8) 34... e6 35. Ka2 Bf1 36. Bf3 Qxf4 37. Re4 Qd2 38. Kb2 Qg5 39. Re1 Ba6 40. Rce3 Qc5 41. Re5 Qd4+ 42. Kb1 Qc3 43. R5e3 Qd2 44. Re5 Qc3 45. R5e3 Qd2 46. Re5 Qc3 {White really could win this. Weighted Error Value: White=0.13/Black=0.15} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "3.2"] [White "Aronian, Levon"] [Black "Radjabov, Teimour"] [Result "1/2-1/2"] [ECO "A47"] [WhiteElo "2781"] [BlackElo "2765"] [Annotator "TA"] [PlyCount "58"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,58,0,8,7,10,2,3,0,16,9,22,15,18,20,19,21,22,10,8,10,14,-8,13,0,18,19, 29,18,50,43,39,46,54,48,55,59,56,66,57,29,48,32,41,16,38,0,24,0,37,0,37]} 1. d4 Nf6 2. Nf3 e6 3. Bf4 b6 4. e3 Bb7 5. h3 c5 6. Nbd2 {A47:1 d4 Nf6 2 Nf3 b6: Torre, London and Colle Systems.} Nc6 7. c3 d5 8. Ne5 {[#]} Bd6 $146 (8... a6 { seems wilder.} 9. Bd3 Bd6 10. O-O O-O 11. Ndf3 Ne7) ({Predecessor:} 8... Nxe5 9. dxe5 Nd7 10. h4 h5 11. Qf3 Qc7 12. Qg3 O-O-O 13. Nf3 c4 14. Be2 Nc5 { 1/2-1/2 (52) Kamsky,G (2763)-Karjakin,S (2776) Beijing 2013}) 9. Qa4 Bxe5 10. Bxe5 O-O 11. Bg3 Ne7 12. Be2 Nf5 13. Be5 Qe7 14. O-O Rfc8 15. Rfd1 h6 16. Rac1 Nd7 17. Bh2 Nf6 18. Bd3 c4 19. Bb1 Bc6 20. Qc2 b5 21. Re1 b4 22. f3 {Threatens to win with e4.} bxc3 23. bxc3 Qa3 {[#] White must now prevent ...Ba4.} 24. Qd1 Nd6 25. e4 {Hoping for e5.} Nb5 26. Qc2 Qf8 27. Qd1 Qa3 28. Qc2 Qf8 29. Qd1 Qa3 {Weighted Error Value: White=0.08/Black=0.07} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.24"] [Round "3.3"] [White "Christiansen, Johan-Sebastian"] [Black "Vidit, Santosh Gujrathi"] [Result "0-1"] [ECO "B40"] [WhiteElo "2618"] [BlackElo "2726"] [Annotator "TA"] [PlyCount "90"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,90,31,18,17,-23,-23,-29,-18,-26,-20,-18,0,9,17,18,39,4,41,6,3,8,8,4, 12,0,20,-31,11,-25,-29,-33,-31,-74,-69,-63,-59,-77,-25,-100,-29,-113,-95,-107, -57,-193,-182,-175,-191,-197,-182,-208,-214,-250,-243,-294,-297,-507,-508,-495, -492,-739,-711,-1678,-1750,-1538,-1493,-1254,-833,-833,-825,-825,-804,-674, -633,-29988,-302,-29989,-29990,-29996,-29997]} 1. e4 c5 2. Nf3 e6 3. c3 d5 4. e5 d4 5. Bd3 Nc6 6. O-O Nge7 7. Re1 Ng6 {B40: Sicilian: 2...e6, Unusual lines.} 8. Bxg6 hxg6 9. d3 {[#]} dxc3 $146 {Black has an edge.} ({Predecessor:} 9... Be7 10. c4 f5 11. exf6 gxf6 12. Nbd2 f5 13. Nf1 Qd6 14. Qe2 Bd7 15. g3 Bf6 { 0-1 (35) McNally,R (1922)-Josse,M (2188) Solihull 2019}) 10. bxc3 b6 11. Na3 Bb7 12. Nc4 Be7 {[#]} 13. Bg5 $1 {Black must now prevent Nd6+!} O-O 14. Nd6 Rb8 (14... Nxe5 $5 15. Nxb7 Nxf3+ 16. Qxf3 Qd7 17. Nxc5 bxc5 18. Bxe7 Qxe7 $11) 15. Nxb7 (15. Bxe7 {is interesting.} Qxe7 16. Qa4 Ba8 17. Qf4 Rbd8 18. Ne4) 15... Rxb7 {[#]} 16. Qa4 $1 Bxg5 17. Qxc6 Rc7 18. Qe4 Be7 19. Rad1 (19. a4 $11) 19... Qd5 20. Qe2 Rd8 21. h4 Rcd7 22. g4 b5 {[%CAl Bb6b5,Bb5b4][%mdl 32]} 23. h5 b4 24. c4 Qc6 (24... Qb7 $17) 25. Kg2 (25. hxg6 $11 fxg6 26. Rd2) 25... a5 (25... gxh5 $17 26. gxh5 Bg5) 26. Kg3 (26. hxg6 $11 {remains equal.} fxg6 27. Kg3) 26... gxh5 $17 27. gxh5 a4 28. h6 $4 {This costs White the game.} (28. Kh2 $15) 28... gxh6 $19 29. Rh1 Kh7 30. Rh3 Rg8+ 31. Kh2 Rg6 32. Qe3 Rd8 33. Rg1 { Intending Rxg6 and mate.} Rdg8 34. Rg4 $2 (34. Rhg3) 34... b3 35. axb3 axb3 { [%CAl Ba4b3,Bb3b2][%mdl 32]} 36. Qf4 (36. d4 $142 Qb7 37. Nd2) 36... f5 37. Rg1 b2 38. Qd2 Qb7 39. Rb1 Bf8 40. Qe3 Rg2+ 41. Kh1 R2g4 42. Kh2 Qg7 43. Qe1 Rg2+ 44. Kh1 Qg4 45. Ng1 {[#]} Rxg1+ $1 {[%mdl 576] Remove Defender. Weighted Error Value: White=0.62/Black=0.22} 0-1 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "3.4"] [White "Carlsen, Magnus"] [Black "Dominguez Perez, Leinier"] [Result "1-0"] [ECO "C54"] [WhiteElo "2847"] [BlackElo "2758"] [Annotator "TA"] [PlyCount "119"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,119,27,14,22,18,22,21,31,31,33,0,1,5,-6,8,0,-5,18,5,43,32,40,22,76, 62,169,170,167,167,178,166,163,165,180,179,179,179,184,181,177,164,178,180,178, 177,172,163,209,209,222,216,227,218,235,238,221,202,289,277,269,233,249,249, 254,240,256,247,353,347,341,325,358,357,346,336,347,356,465,460,1330,4954,1422, 2433,2116,3942,3110,2933,3111,2760,2433,1676,2390,1061,5012,3929,29963,29949, 12379,11411,5610,5097,29985,29986,29986,29987,29987,29988,29989,29990]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O O-O 7. Re1 $1 {[%mdl 4] is currently scoring better than 7.Bb3.} a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. Bg5 h6 9. Bh4 g5 {The position is equal.} 10. Bg3 Ba7 11. Nbd2 Nh7 12. Nf1 h5 {[#] Threatens to win with ...h4.} 13. h4 g4 {[#]} 14. N3h2 $5 $146 {[%mdl 8] An interesting novelty.} ({Predecessor:} 14. N3d2 Ne7 15. d4 Ng6 16. dxe5 dxe5 17. Ne3 Bxe3 18. Rxe3 Qf6 19. Qf1 Nxh4 20. f3 { 0-1 (26) Oomen,A (2041)-Tieken,F (2233) ICCF email 2017}) 14... Ne7 15. Qd2 Kg7 (15... b5 $5 16. Bxb5 f5 17. exf5 Nxf5 $15) 16. d4 Ng6 17. Rad1 Nxh4 (17... Be6 $11 18. Ne3 Nxh4) 18. dxe5 $16 Ng6 {White now steadily converts the win.} ( 18... Be6 $14) 19. exd6 $18 {Strongly threatening d7.} h4 {[#]} 20. d7 $1 $36 { [%mdl 2048] Black is under strong pressure.} Bxd7 (20... Qxd7 21. Qxd7) 21. Qxd7 Qxd7 22. Rxd7 hxg3 23. Nxg3 Ne5 24. Rxc7 Rfc8 25. Rxc8 ({And not} 25. Rxb7 Rxc4 26. Nhf1 Kg6 $17) 25... Rxc8 26. Be2 Nf6 27. Rd1 Kg6 28. Nhf1 Kg5 29. Ne3 Bxe3 30. fxe3 Rc7 31. Kf2 Rd7 32. Rd4 Nc6 33. Rxd7 Nxd7 {[%mdl 4096] Endgame KBN-KNN} 34. Nf5 Nce5 (34... Nc5 {keeps fighting.}) 35. Nd6 b6 36. Bc4 Kf6 37. b4 Ke7 38. Nf5+ Kd8 39. Bd5 axb4 (39... f6 $142 40. Kg3 Nd3 41. bxa5 (41. Kxg4 axb4 42. cxb4 N7e5+ 43. Kh5 Nxb4 $18) 41... bxa5 42. Kxg4 Nf2+ 43. Kf4 Nd3+ 44. Kf3 N3e5+ 45. Kf4 Nd3+ 46. Kf3 Kc7) 40. cxb4 Nd3+ 41. Kg3 Nxb4 42. Bxf7 Ne5 43. Bb3 Kd7 44. Nh6 Kd6 45. Nxg4 Nbd3 (45... Ned3 $142 46. Bc4 Kc5) 46. Nxe5 Kxe5 { KB-KN} 47. Kh4 Nc5 48. Bd5 Kf6 49. g4 Nd7 50. Kh5 Ne5 51. g5+ Kg7 52. Bb3 b5 53. a3 Kh7 54. Bd1 Nc4 55. e5 Kg7 56. e6 Nxa3 57. e7 {White mates.} Kf7 58. g6+ Kxe7 59. g7 Kf7 60. Kh6 {Weighted Error Value: White=0.02/Black=0.21} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "3.5"] [White "Nakamura, Hikaru"] [Black "Le, Quang Liem"] [Result "1/2-1/2"] [ECO "D31"] [WhiteElo "2736"] [BlackElo "2709"] [Annotator "TA"] [PlyCount "185"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,185,20,19,20,25,10,20,16,20,0,0,-4,0,-11,-18,-43,30,20,20,16,20,25,12, 16,13,12,12,12,12,12,15,7,24,17,25,0,10,0,0,0,0,0,0,0,0,-18,20,33,44,47,24,27, 87,87,105,105,127,127,126,116,118,67,67,64,79,83,116,120,162,66,333,330,367, 384,537,183,516,509,498,498,438,172,133,62,52,52,64,52,52,0,0,0,24,26,16,26,34, 0,52,52,52,52,52,52,52,52,52,52,52,52,52,52,52,0,0,0,52,52,52,52,52,0,52,52,52, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 e6 2. Nc3 d5 3. d4 a6 4. cxd5 exd5 5. Bf4 Nf6 6. e3 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6.} Bd6 7. Bg3 { 7.Bg5 gains popularity.} O-O 8. Bd3 Re8 9. Qc2 {[#]} Nc6 $146 {next ...Nxd4 is good for Black.} ({Predecessor:} 9... Bxg3 10. hxg3 h6 11. Nge2 b6 12. Nf4 Bb7 13. O-O Nbd7 14. Rac1 c5 15. dxc5 Nxc5 {0-1 (59) Timerkhanov,A (2387)-Svane,R (2613) chess.com INT 2020}) 10. Be2 Nb4 11. Qb3 c5 (11... Bf5 $5 12. Rc1 $8 b6 $11) 12. Bxd6 Qxd6 (12... Bf5 $1 $15 13. dxc5 Nc2+ 14. Kf1 Nxa1 15. Qxb7 d4 16. exd4 Ne4) 13. dxc5 $11 Qxc5 14. Nf3 Be6 15. Nd4 Nc6 16. Rd1 Nxd4 17. Rxd4 Ne4 $1 18. Bf3 Rac8 {[%CAl Re4c3]} 19. O-O {[%CAl Rc3d5]} Nxc3 20. bxc3 b5 21. Rc1 {[%CAl Rf3d5]} Red8 22. Qd1 Rd7 23. h4 Qa3 24. Qd2 Rc4 25. Be2 Rc5 26. Bd1 h6 27. Kh2 a5 28. Rb1 a4 29. c4 Rxc4 30. Rxb5 Qd6+ (30... Rxd4 $11 {keeps the balance.} 31. exd4 Rc7) 31. g3 $16 Rdc7 32. Bxa4 Rxd4 33. exd4 Bf5 34. Bb3 Be4 35. Qf4 (35. Qe3 $1 $16) 35... Qxf4 $14 36. gxf4 {[%mdl 4096] Endgame KRB-KRB} Rc1 37. f5 ({Don't play} 37. Bxd5 Rh1+ 38. Kg3 Rg1+ 39. Kh3 Rh1+ 40. Kg4 Rg1+ 41. Kh3 Rh1+ 42. Kg3 Rg1+ 43. Kh3 $11) 37... Ra1 38. Kg3 Kh7 39. f6 (39. Kf4 $18) 39... gxf6 $2 {[%mdl 8192]} (39... g5 $14) 40. f3 $18 ({Less strong is} 40. Bxd5 Bxd5 41. Rxd5 Rxa2 $14) 40... Bf5 41. Bxd5 Be6 {[#]} 42. Be4+ (42. Rb1 $3 {[%mdl 512]} Rxb1 43. Be4+ {[%mdl 64] Double Attack} Kg8 44. Bxb1) 42... Kg7 $2 {[#]} (42... f5) 43. d5 $1 Bd7 44. Rb7 f5 45. Bd3 ({Not} 45. Rxd7 fxe4 46. fxe4 Rxa2 $18) (45. Bb1) 45... Rd1 46. Bc4 ({White should try} 46. Rxd7 $16 Rxd3 47. Kf4) 46... Rd4 $14 47. Bb3 f4+ 48. Kf2 Ba4 49. Bxa4 (49. Ke2 $14) 49... Rxa4 {KR-KR} 50. Rb2 Rd4 51. Ke2 Rxd5 52. Rb4 Re5+ 53. Kf2 Re3 (53... Rc5 $11) 54. a4 Ra3 55. Rxf4 f5 56. Rb4 Kg6 57. Kg3 Kh5 58. Rc4 Kg6 59. Rf4 Ra2 60. Rb4 Kh5 61. Kf4 (61. Rc4 $14) 61... Ra3 $1 $11 62. Kg3 (62. Ke5 $11) 62... Ra2 $14 63. Rd4 Ra3 64. Rf4 Kg6 65. Kf2 (65. Rc4 $1 $14) 65... Kf6 ({Black should play} 65... Kg7 $11) 66. Rc4 $1 Kg6 67. Ke2 (67. Rd4 $14) 67... Kh5 $11 { The position is equal.} 68. Rf4 Kg6 $1 69. Kd2 Kf6 70. Kc2 Ke5 71. Kb2 Rd3 72. Rb4 Rxf3 73. a5 Rf2+ 74. Kb3 (74. Ka1 {is more complex.} Rf1+ 75. Kb2 Rf2+) 74... Rf3+ 75. Ka2 Rf2+ 76. Rb2 Rf4 77. Ka3 {And now a6 would win.} Rg4 78. Rb5+ Kd6 79. a6 {Strongly threatening a7.} Kc7 $1 80. Rb7+ Kc8 81. Rb6 { aiming for a7.} Kc7 $1 {[%CAl Rc7b6]} 82. a7 Rg8 83. Rxh6 {Threatens to win with Rh7+.} (83. Rf6 {seems wilder.} Ra8 84. Rf7+ Kb6 85. Rxf5 Rxa7+ 86. Kb4) 83... Kb7 84. Rh7+ Ka8 85. h5 f4 86. h6 {Hoping for Rg7.} f3 {White must now prevent ...Rf8.} 87. Rg7 (87. Rf7 {looks sharper.} Rh8 88. Rf6 Kxa7 89. Kb4 f2 90. Rxf2 Rxh6 91. Rf7+) 87... Rf8 {...f2 is the strong threat.} 88. h7 { White wants to mate with Rg8!} f2 89. Rf7 $1 {[%CAl Rf7f8]} Rh8 90. Rxf2 Rxh7 91. Rf4 Rxa7+ 92. Ra4 Rxa4+ 93. Kxa4 {White really could win this. Weighted Error Value: White=0.20/Black=0.25} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "3.6"] [White "Firouzja, Alireza"] [Black "Karjakin, Sergey"] [Result "1-0"] [ECO "D04"] [WhiteElo "2759"] [BlackElo "2757"] [Annotator "TA"] [PlyCount "101"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,101,0,0,-15,-21,-29,-15,-26,-12,-38,-31,-25,-23,-27,-28,-20,-7,-28,0, 0,-18,-32,0,0,0,-10,91,82,91,76,112,90,144,144,144,144,144,137,154,143,144,137, 141,144,175,153,160,147,157,147,281,272,277,258,291,265,362,278,278,278,287, 187,262,274,256,186,266,262,253,252,225,204,204,204,212,146,147,147,162,162, 162,147,206,161,157,158,681,658,1019,982,4929,3435,2845,2530]} 1. d4 Nf6 2. Nf3 d5 3. e3 c5 4. dxc5 e6 5. b4 a5 6. c3 {D04: Colle System.} axb4 7. cxb4 b6 $1 8. Bb5+ {The position is equal.} Bd7 9. Bxd7+ Nbxd7 10. O-O {Black must now prevent c6.} bxc5 11. b5 Bd6 12. a4 O-O 13. Bb2 Qb8 14. Nbd2 Rc8 15. Qc2 {[#]} h6 $146 ({Predecessor:} 15... c4 16. Bc3 Nc5 17. Rfb1 Ng4 18. h3 Ne5 19. Nxe5 Bxe5 20. Bxe5 Qxe5 21. a5 Rcb8 {1-0 (37) Cifuentes Parada,R (2539)-Bauer,C (2602) San Sebastian 2009}) 16. Rfb1 e5 {next ...e4 is good for Black.} 17. g3 Bc7 (17... Qb7 $11) 18. e4 $1 $16 d4 19. Nc4 Ba5 20. Bc1 $1 Qb7 {[#]} (20... Bc3 $142) 21. Bd2 $1 {[%CAl Rd2a5]} Bc7 22. b6 Bb8 {[#]} ({Wrong is} 22... Nxb6 $2 23. a5) 23. Re1 Ra6 ({But not} 23... Nxb6 $2 24. Rab1 $18) 24. a5 Re8 25. Nh4 Re6 26. Nf5 h5 27. Qd3 g6 28. Nh4 Ra8 29. Nf3 Qa6 (29... Nh7 $16 {was necessary.} 30. Bh6 Ra6) 30. Ng5 $18 Re7 31. Qb3 Ne8 32. Rab1 Ndf6 33. Qb5 Qxb5 34. Rxb5 Nd7 35. Rc1 Nd6 (35... f6 {might work better.}) 36. Nxd6 Bxd6 37. Nf3 f5 (37... Ree8 $142 38. Be1 f5) 38. Bg5 Ree8 39. Nd2 Kf7 40. Nc4 Ke6 41. f3 Ra6 42. b7 Rf8 43. Kg2 Bb8 44. Rcb1 Bc7 45. Bc1 Bb8 (45... Rg8 $16) 46. Ba3 Ba7 47. Re1 g5 $2 {A mistake that costs the game.} (47... Rc6 $16 48. Bc1 Bb8) 48. exf5+ {White is clearly winning.} Kxf5 {[#]} 49. Nxe5 $1 {[%mdl 512]} Re8 ( 49... Nxe5 50. Bxc5) 50. Nxd7 {[%mdl 64] Discovered Attack} Rxe1 51. Bxc5 { Weighted Error Value: White=0.11/Black=0.36} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "3.7"] [White "Duda, Jan-Krzysztof"] [Black "Mamedyarov, Shakhriyar"] [Result "0-1"] [ECO "E10"] [WhiteElo "2729"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "54"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,54,46,13,26,7,10,15,16,12,16,28,21,20,39,46,36,12,20,-17,0,-50,-35, -62,0,0,0,0,0,-150,-134,-794,-781,-871,-848,-890,-890,-800,-794,-782,-749,-695, -690,-29996,-29997]} 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. dxe6 fxe6 6. cxb5 d5 7. g3 a6 {has lost popularity (7...Bd6). E10: Blumenfeld Gambit.} 8. bxa6 Nc6 9. Bg2 Be7 {The position is equal.} 10. O-O O-O 11. Nc3 Bxa6 12. b3 h6 {[#] } 13. Bb2 $146 ({Predecessor:} 13. Na4 Ne4 14. Bb2 Bf6 15. Nd2 Bxb2 16. Nxe4 Bxa1 17. Nexc5 Nd4 18. Qxa1 Qf6 19. Nxa6 Nxe2+ {1-0 (46) Michalik,P (2584) -Zwardon,V (2383) Czechia 2014}) 13... Qe8 14. Rc1 Qh5 15. Re1 Rad8 16. Na4 Ne4 17. Ba3 {[%CAl Ra3c5]} Ne5 ({Black should play} 17... d4 $1 $15 18. Bxc5 Bxc5) 18. Bxc5 Ng4 $1 19. Bxe7 Rxf3 20. Bh4 ({White has to play} 20. h3 $1 $11 Rxf2 21. Qd4 (21. Bxd8 $2 {perishes.} Rxg2+ {[%mdl 64] Decoy} 22. Kxg2 Ne3+ { [%mdl 64] Double Attack} 23. Kh2 Nxd1 $19) (21. hxg4 Qxg4 22. Bh4 Rdf8 $15) 21... Rxg2+ 22. Kxg2) 20... Rxf2 $40 {[%mdl 128] White is in trouble.} 21. Bxe4 {[%mdl 8192] [#] This costs White the game.} (21. Qd4 $17 Rdf8 22. Bxe4 dxe4 23. Qxe4) 21... Rxh2 $19 22. Bf3 Rxh4 23. gxh4 Qxh4 24. Bxg4 Qxg4+ 25. Kh2 Qh4+ 26. Kg2 d4 {[#] ( -> ...Bb7+)} 27. Nc5 Qg4+ {Weighted Error Value: White=0.77/ Black=0.04} 0-1 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.24"] [Round "3.8"] [White "Praggnanandhaa R"] [Black "So, Wesley"] [Result "0-1"] [ECO "D85"] [WhiteElo "2608"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "94"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 21,94,16,15,1,7,0,0,-58,-41,-41,-37,-56,8,-50,-25,-77,-70,-105,-89,-134, -108,-92,-92,-103,-114,-163,-187,-189,-158,-310,-294,-361,-381,-398,-402,-386, -250,-506,-509,-557,-456,-472,-468,-437,-435,-532,-512,-510,-510,-517,-513, -560,-542,-682,-677,-780,-770,-842,-833,-816,-792,-922,-786,-1266,-1281,-1047, -1231,-972,-922,-29975,-1156,-5143,-991,-29981,-29978]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Be3 Qa5 9. Qd2 O-O 10. Rc1 Rd8 11. d5 e6 12. c4 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} Qxd2+ 13. Nxd2 Na6 {[#]} 14. a3 $146 (14. Be2 $11) ({ Predecessor:} 14. Be2 b6 15. Nb1 f5 16. f3 fxe4 17. fxe4 Re8 18. Nc3 Bd7 19. Kd2 Nc7 20. Bf4 {1/2-1/2 (30) Akobian,V (2641)-Hansen,E (2629) Saint Louis 2018 }) 14... Bb2 $15 15. Rb1 Bxa3 16. h4 f6 ({Black should play} 16... Bb4 $15) 17. Be2 (17. h5 $11) 17... Bb4 18. O-O (18. h5 $11 {remains equal.}) 18... Nc7 $17 19. h5 a5 20. Bf4 e5 21. Be3 g5 (21... Ne8) (21... a4) 22. g3 a4 23. f4 a3 24. fxe5 a2 25. Ra1 (25. Rxb4 $17 {was the only defense.} cxb4 26. Ra1) 25... Ra3 $19 (25... fxe5 26. Bxg5 Rd6 27. Nb3 $17 (27. Be7 Rda6 $11)) 26. Kf2 fxe5 27. Bxg5 Rf8+ 28. Nf3 {Now Bc1 and White clings on.} Bg4 {[%CAl Rg4f3]} 29. Kg2 { [#]} (29. Bc1 Rc3 30. Kg1) 29... Bc3 $1 {[%CAl Rc3a1]} 30. Be7 Bxf3+ 31. Bxf3 { Threatens to win with d6.} Bxa1 32. Bxf8 Bd4 (32... Kxf8 33. Be2+ Ke7 34. Rxa1 $19) 33. Bg4 a1=Q 34. Rxa1 Rxa1 35. d6 Ra2+ ({Not} 35... Kxf8 36. dxc7 Ra8 37. c8=Q+ Rxc8 38. Bxc8 $11) 36. Kh3 {[#]} Bg1 $1 {[%csl Gg1][%CAl Ra2h2]} 37. Bd7 {[#]} (37. Bf5 Nd5) 37... Ne8 38. Be7 (38. Bxe8 Kxf8) 38... Kf7 39. Bf5 Nf6 { [%csl Gg1][%CAl Ra2h2]} 40. g4 Rd2 41. g5 Nxh5 42. Bxh7 Nf4+ 43. Kg4 Ng6 44. Bf6 Rxd6 45. Kf5 {[#]} Ne7+ 46. Bxe7 Kxe7 47. g6 Kf8 {Weighted Error Value: White=0.49/Black=0.12} 0-1 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "4.1"] [White "Jones, Gawain C B"] [Black "So, Wesley"] [Result "1-0"] [ECO "C56"] [WhiteElo "2670"] [BlackElo "2770"] [Annotator "RC"] [PlyCount "43"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "900+10"] 1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 { [%emt 0:00:00]} 3. Bc4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 4. d4 {[%emt 0:00: 00]} exd4 {[%emt 0:00:02]} 5. O-O {[%emt 0:00:00]} Nxe4 {[%emt 0:00:03]} 6. Re1 {[%emt 0:00:02]} d5 {[%emt 0:00:03]} 7. Bxd5 {[%emt 0:00:01]} Qxd5 {[%emt 0:00: 00]} 8. Nc3 {[%emt 0:00:01]} Qa5 {[%emt 0:00:28]} 9. Nxe4 {[%emt 0:00:15]} Be6 {[%emt 0:00:02]} 10. Bd2 {[%emt 0:00:06]} Qf5 {[%emt 0:00:50]} 11. Bg5 { [%emt 0:00:35]} Bc5 {[%emt 0:01:15]} 12. Nh4 {[%emt 0:01:06]} Qd5 {[%emt 0:01: 52]} 13. c4 {[%emt 0:00:25]} Qe5 {[%emt 0:00:10]} 14. Nf3 {[%emt 0:00:47]} Qf5 {[%emt 0:00:06]} 15. Nh4 {[%emt 0:00:05]} Qe5 {[%emt 0:00:02]} 16. f4 {[%emt 0: 01:15]} d3+ {[%emt 0:00:04]} 17. Kh1 {[%emt 0:00:02]} Qd4 {[%emt 0:00:10]} 18. Nf3 {[%emt 0:01:44]} Qxc4 {[%emt 0:00:05]} 19. Rc1 {[%emt 0:00:07]} d2 { [%emt 0:00:11]} 20. Rxc4 {[%emt 0:01:14]} dxe1=Q+ {[%emt 0:00:00]} 21. Qxe1 { [%emt 0:00:04]} Bxc4 {[%emt 0:00:12]} 22. Nxc5+ {[%emt 0:00:22]} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.24"] [Round "4.2"] [White "Mamedyarov, Shakhriyar"] [Black "Praggnanandhaa R"] [Result "1/2-1/2"] [ECO "E21"] [WhiteElo "2770"] [BlackElo "2608"] [Annotator "TA"] [PlyCount "116"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,116,0,0,1,8,-4,-2,-10,-7,-47,-41,-37,-49,-41,-57,-59,-59,-58,-57,-107, -102,-112,-126,-114,-112,-121,-114,-107,-126,-152,-112,-110,-51,-52,-58,-74, -75,-75,0,-17,-1,-46,-35,-71,-76,-74,-83,-83,-67,-156,-87,-95,0,-147,0,-91,-8, -65,-8,-8,-8,-10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-23,0,0,0,-18,0,-18,0,0,0, -1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Qb3 c5 6. dxc5 {E21: Nimzo-Indian: 4 Nf3.} Bxc5 7. g3 Bb7 8. Bg2 Nc6 9. O-O Na5 {[#]} 10. Qa4 $146 ({Predecessor:} 10. Qc2 Nxc4 11. Bg5 O-O 12. Rad1 Rc8 13. e4 h6 14. Bc1 d5 15. exd5 Nxd5 16. Nxd5 Bxd5 {0-1 (30) Hoelzl,F (2374) -Baumegger,S (2433) Leoben 2008}) 10... Bc6 11. Qc2 Nxc4 12. Na4 {[#]} Be7 13. Qxc4 b5 {[%mdl 64] Double Attack} 14. Qh4 bxa4 15. Rd1 Qb6 16. Be3 Qb7 17. Rac1 O-O 18. Bd4 h6 19. g4 Qb5 (19... Rfc8 20. g5 hxg5 21. Qxg5 (21. Nxg5 $4 Bxg2 22. e4 (22. f3 Bxf3) 22... Bxe4) 21... d6) 20. g5 {[#]} hxg5 ({Better is} 20... Ne8 $1 $17 {[%CAl Rh6g5]} 21. e4 hxg5) 21. Nxg5 $15 Qf5 {Strongly threatening . ..Bxg2.} 22. Bxc6 dxc6 23. Nf3 ({Avoid the trap} 23. Rxc6 $2 Nd5 $19) 23... Nd5 (23... Rad8 $17) 24. Qg3 $11 {[%csl Gd4][%CAl Rg3g7]} Bf6 25. Kf1 Rfd8 26. Bxf6 Nxf6 27. Qe5 Qh3+ 28. Kg1 Qg4+ 29. Qg3 ({White should play} 29. Kf1 $1 $15) 29... Qe4 (29... Rxd1+ $142 30. Rxd1 Qc4) 30. Qe5 Qg4+ (30... Rxd1+ $142 31. Rxd1 Qc4) 31. Qg3 $17 Qe4 (31... Rxd1+ $142 32. Rxd1 Qc4) 32. Qe5 $1 c5 (32... Rxd1+ $17 33. Rxd1 Qc4) 33. Qxe4 ({White should try} 33. Rxd8+ $1 $11 Rxd8 34. Rxc5) 33... Nxe4 (33... Rxd1+ $15 34. Rxd1 Nxe4) 34. Rxd8+ $11 Rxd8 {[%mdl 4096] Endgame KRN-KRN} 35. Rc4 f5 36. Rxa4 g5 37. h3 Rd1+ 38. Kg2 Rb1 39. b3 Rb2 40. Kf1 Rb1+ 41. Kg2 Rb2 42. Kf1 Kg7 43. Rxa7+ Kf6 44. Ra5 Rb1+ 45. Kg2 { The position is equal.} Rb2 46. Kf1 Nc3 47. Ng1 ({Much worse is} 47. Rxc5 Nxe2 48. h4 g4 $17) 47... Nxa2 48. Rxc5 Rxb3 49. Nf3 Rb6 50. Ne5 {aiming for Nd7+.} Rb1+ 51. Kg2 Rb2 52. e3 Nb4 (52... Rb7 {seems wilder.} 53. Nf3 Nb4 54. Rc8 Nd3 55. Rf8+ Ke7) 53. Rb5 Nd3 54. Rxb2 Nxb2 55. Nd7+ Ke7 56. Ne5 Kf6 57. Nd7+ Ke7 58. Ne5 Kf6 {Weighted Error Value: White=0.09/Black=0.20} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "4.3"] [White "Karjakin, Sergey"] [Black "Duda, Jan-Krzysztof"] [Result "1/2-1/2"] [ECO "B81"] [WhiteElo "2757"] [BlackElo "2729"] [Annotator "TA"] [PlyCount "137"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,136,27,28,49,37,39,35,36,31,18,17,19,22,28,22,21,21,27,21,36,29,17,0, 60,61,59,58,67,66,72,49,64,63,83,92,88,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,-47,-11,-11,-11,-11,-11,-10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 h6 7. h4 Nc6 8. Rg1 d5 9. exd5 Nxd5 {B81: Sicilian Scheveningen: Keres Attack.} 10. Nxd5 exd5 11. Be3 Qxh4 { White is slightly better.} 12. Qf3 Nxd4 13. Bxd4 Qe7+ 14. Be2 Qe4 15. O-O-O { Strongly threatening Bb5+.} Qxf3 $1 16. Bxf3 Be6 17. Rge1 {Hoping for Bxd5.} Kd7 18. Kb1 f6 {[#]} 19. c4 $146 ({Predecessor:} 19. Be3 Bb4 20. c3 Bd6 21. Bxd5 Bxg4 22. Rd4 h5 23. Bxb7 Rae8 24. Rh1 g5 25. Ra4 {1/2-1/2 (33) Cowan, A-Tee,J (2061) ICCF email 2017}) 19... Bf7 (19... Bb4 $11 20. Re3 (20. cxd5 Bf7 $11) 20... b6) 20. Bxd5 $14 Bxd5 21. Be3 ({But not} 21. cxd5 Bd6 $11) 21... Re8 22. Rxd5+ Kc6 23. Red1 g6 24. a3 Rh7 25. b4 ({Reject} 25. Bxa7 $6 b6 $11) 25... b6 26. Rd8 (26. Kc2 $16) 26... Rxd8 $11 27. Rxd8 {[%mdl 4096] Endgame KRB-KRB} Bd6 28. Rg8 h5 $1 {[%CAl Rh5h4]} 29. Rxg6 h4 $1 {[%CAl Rh4h3] Threatens to win with ...h3.} 30. Rxf6 Kc7 31. c5 bxc5 32. bxc5 ({Don't blunder} 32. Bxc5 $2 Bxc5 33. Rf3 {[#]} h3 $1 $19) 32... Be5 {[%CAl Re5f6]} 33. Rf5 h3 34. Rxe5 { KRB-KR} h2 35. Bf4 {White threatens Rh5+ and mate.} h1=Q+ 36. Re1+ $1 Kc6 37. Rxh1 Rxh1+ {KR-KB} 38. Kc2 Rh4 39. f3 Rh3 40. Kd3 Rxf3+ {[%mdl 64] [#] Double Attack} 41. Be3 (41. Ke4 $5 {[%CAl Re4f3]} Rxa3 42. g5 $11) 41... Rg3 42. g5 { The position is equal.} Kd5 43. c6 $1 {[%CAl Rc6c7]} Kxc6 {...Kd5 is the strong threat.} 44. Ke4 a5 {White must now prevent ...Kd7.} 45. Kf4 Rg2 46. Kf5 Kd7 47. g6 Ke8 48. Bc5 Rc2 49. Bd6 Kd7 50. g7 Rg2 51. Bf8 a4 52. Kf6 Ke8 53. Bc5 Rg3 54. Bd6 (54. Bf2 {is interesting.} Rg4 55. Be1 Rg1 56. Bd2 Rg3 57. Bh6) 54... Rxg7 55. Kxg7 {KB-KP} Kd7 56. Bb4 Kc6 57. Kf6 Kb7 58. Ke6 Ka8 59. Kd6 Kb7 60. Kc5 Ka8 61. Kb5 $1 Kb7 62. Kxa4 Ka8 63. Kb5 Kb7 64. a4 $1 {[%CAl Ba3a4, Ba4a5,Ba5a6][%mdl 32]} Ka8 65. a5 Kb7 66. a6+ Ka8 67. Kb6 Kb8 68. Bd6+ Ka8 69. a7 {Weighted Error Value: White=0.04/Black=0.04} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "4.4"] [White "Le, Quang Liem"] [Black "Firouzja, Alireza"] [Result "1/2-1/2"] [ECO "D15"] [WhiteElo "2709"] [BlackElo "2759"] [Annotator "TA"] [PlyCount "92"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,92,19,4,8,18,18,15,16,1,39,30,46,12,16,3,15,9,17,19,14,0,15,13,13,14, 12,18,34,29,54,36,51,47,53,39,49,30,35,0,26,25,41,21,20,11,27,0,0,0,5,0,0,0,0, 0,19,1,11,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 a6 5. a4 e6 6. e3 c5 7. cxd5 exd5 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4.} 8. g3 Nc6 9. Bg2 {[#]} cxd4 $146 ({ Predecessor:} 9... Be6 10. O-O Be7 11. dxc5 Bxc5 12. Ne2 O-O 13. Nfd4 Bg4 14. Nxc6 bxc6 15. Qc2 Bd6 {0-1 (35) Tersinsev,A (2043)-Venkata,K (1967) Apatin 2014 }) 10. Nxd4 Be7 11. O-O O-O 12. b3 Bg4 13. Qd2 Qd7 14. Ba3 Bxa3 15. Rxa3 Bh3 16. Rd1 Bxg2 17. Kxg2 Ne5 18. f3 Rfe8 19. Ra2 Ng6 20. Rc1 Re7 21. Rac2 h5 22. h4 Rae8 23. Nd1 Nf8 24. Qa5 (24. Qb4 {is more complex.} g6 25. Nf2 Qd8 26. Rc8 Qd7 27. R8c3) 24... Ne6 25. Qd2 Nxd4 26. Qxd4 Qd6 27. Rc8 Qa3 28. Qd3 Qd6 29. Nf2 Qe6 {The position is equal.} 30. Rxe8+ Rxe8 31. Rc7 Qxe3 32. Qxe3 Rxe3 33. Rxb7 $11 {[%mdl 4096] Endgame KRN-KRN} d4 34. Rb6 a5 35. Rb8+ Kh7 36. Rd8 Rxb3 37. Rxd4 Rb2 38. Kf1 Ra2 39. Nd3 Ng8 40. Nf4 Ne7 41. Rd7 Nf5 42. Nxh5 Kg6 { [#] aiming for ...Ne3+.} 43. Nf4+ Kf6 44. Nh5+ Kg6 {And now ...Ne3+ would win.} 45. Nf4+ Kf6 46. Nh5+ Kg6 {Weighted Error Value: White=0.07/Black=0.05} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "4.5"] [White "Dominguez Perez, Leinier"] [Black "Nakamura, Hikaru"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2758"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "47"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 27,28,0,7]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. dxe5 Nxb5 7. a4 Nbd4 8. Nxd4 d5 9. exd6 Nxd4 10. Qxd4 Qxd6 11. Qe4+ Qe6 12. Qd4 Qd6 13. Qe4+ Qe6 14. Qd4 Qd6 {[#] Predecessor:} 15. Qe3+ $146 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} Be6 16. Nc3 Qc6 17. Nb5 Bc5 18. Qc3 O-O 19. Bf4 Rfc8 20. Nd4 Bxd4 21. Qxd4 Rd8 22. Qb4 a5 23. Qb5 Qxb5 24. axb5 {1/2-1/2 (32) Wei,Y (2732)-Grischuk,A (2777) Chess.com INT 2020} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "4.7"] [White "Radjabov, Teimour"] [Black "Christiansen, Johan-Sebastian"] [Result "1-0"] [ECO "D02"] [WhiteElo "2765"] [BlackElo "2618"] [Annotator "RC"] [PlyCount "57"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "900+10"] 1. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} Bf5 { [%emt 0:00:00]} 3. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 4. Nc3 {[%emt 0:00: 04]} Nf6 {[%emt 0:00:00]} 5. Bg5 {[%emt 0:00:35]} c6 {[%emt 0:00:30]} 6. Qb3 { [%emt 0:00:02]} Qc7 {[%emt 0:06:09]} 7. e3 {[%emt 0:01:12]} Nbd7 {[%emt 0:00: 03]} 8. Bf4 {[%emt 0:00:34]} Qb6 {[%emt 0:02:14]} 9. c5 {[%emt 0:02:14]} Qxb3 { [%emt 0:00:04]} 10. axb3 {[%emt 0:00:00]} a6 {[%emt 0:00:02]} 11. h3 {[%emt 0: 00:06]} Be7 {[%emt 0:00:17]} 12. b4 {[%emt 0:00:06]} Rc8 {[%emt 0:00:02]} 13. Nd2 {[%emt 0:00:05]} O-O {[%emt 0:00:16]} 14. Nb3 {[%emt 0:00:01]} Bd8 { [%emt 0:00:03]} 15. Na5 {[%emt 0:00:57]} Bxa5 {[%emt 0:00:04]} 16. bxa5 { [%emt 0:00:25]} Rfe8 {[%emt 0:00:20]} 17. g4 {[%emt 0:00:34]} Be4 {[%emt 0:00: 49]} 18. Nxe4 {[%emt 0:00:25]} Nxe4 {[%emt 0:00:00]} 19. Bh2 {[%emt 0:00:36]} e5 {[%emt 0:00:12]} 20. f3 {[%emt 0:00:31]} exd4 {[%emt 0:02:09]} 21. fxe4 { [%emt 0:00:06]} Rxe4 {[%emt 0:00:02]} 22. O-O-O {[%emt 0:01:12]} dxe3 {[%emt 0: 02:01]} 23. Bd3 {[%emt 0:00:17]} Ra4 {[%emt 0:02:05]} 24. Bf5 {[%emt 0:00:15]} Nxc5 {[%emt 0:00:24]} 25. Bxc8 {[%emt 0:00:12]} d4 {[%emt 0:00:33]} 26. Kc2 { [%emt 0:02:26]} Rc4+ {[%emt 0:00:25]} 27. Kb1 {[%emt 0:00:01]} d3 {[%emt 0:00: 05]} 28. Rhe1 {[%emt 0:00:19]} Re4 {[%emt 0:00:51]} 29. Bf5 {[%emt 0:00:02]} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "4.8"] [White "Tari, Aryan"] [Black "Aronian, Levon"] [Result "1/2-1/2"] [ECO "C47"] [WhiteElo "2639"] [BlackElo "2781"] [Annotator "TA"] [PlyCount "55"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,55,0,12,39,34,39,39,37,1,6,0,0,0,0,0,0,-11,-16,-10,0,-44,-44,-50,-37, -47,-64,-120,-132,-81,-33,-38,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 O-O 8. O-O Re8 9. Bg5 Rb8 { C47: Scotch Four Knights and Four Knights with 4 g3.} (9... h6 10. Bh4 g5 11. Bg3 Bxc3 12. bxc3 Nxe4 13. Qh5 d6 14. Rae1 Bf5 15. Qxh6 Re6 16. Qh5 Qf6 17. Bxe4 Bxe4 18. h4 gxh4 19. Qg4+ Qg7 20. Qxh4 {0-1 (56) Tari,A (2620)-Aronian,L (2765) St Petersburg 2018}) 10. f4 {[#] Threatens to win with e5.} h6 11. Bh4 Be7 {White is slightly better.} 12. Qf3 Rxb2 {[#]} 13. Bxf6 $146 ({Predecessor: } 13. e5 Nd5 14. Bxe7 Qxe7 15. Nxd5 cxd5 16. Qxd5 Bb7 17. Qd4 Rb6 18. Rae1 Bc6 19. Re2 {1-0 (37) Petrosian,D (2487)-Hovhannisyan,R (2522) Jermuk 2010}) 13... Bxf6 ({Reject} 13... Bc5+ $6 14. Kh1 $16) 14. e5 Be7 15. Qe4 {[#] Threatening mate with Qh7+.} g6 $1 $36 {[%mdl 2048] Black is more active.} 16. f5 d5 $1 { [%CAl Rd5e4]} 17. Qf3 Rf8 18. f6 Bc5+ 19. Kh1 Rb4 20. Rae1 Qe8 $1 21. a3 (21. Nd1 $15) 21... Rh4 $17 22. h3 Qe6 23. Qg3 Rh5 24. Ne2 $1 {[%CAl Re2f4] The position is equal.} Rg5 25. Qh4 Rh5 26. Qg3 {Nf4 is the strong threat.} Rg5 ( 26... Rxe5 $5 27. Nf4 $8 Rxe1 28. Nxe6 Rxf1+ 29. Bxf1 Bxe6 $11) 27. Qh4 Rh5 28. Qg3 $1 {Weighted Error Value: White=0.09/Black=0.07} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "5.1"] [White "Aronian, Levon"] [Black "Jones, Gawain C B"] [Result "1-0"] [ECO "D00"] [WhiteElo "2781"] [BlackElo "2670"] [Annotator "TA"] [PlyCount "207"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,207,9,12,0,3,0,-5,-32,-25,-28,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0, 0,-6,-9,-23,0,-11,-11,-28,-22,-19,-3,-40,-36,-41,-20,-15,-4,-11,0,0,0,0,0,0,3, 0,0,0,9,0,9,9,8,5,5,8,8,5,6,7,14,8,16,7,20,21,25,22,23,23,22,21,20,22,54,10,12, 13,37,44,45,-52,44,44,44,61,99,26,26,26,26,26,25,23,29967,29968,29968,29969, 29969,29970,29971,29969,29969,29970,29970,29971,29971,29972,29972,29973,29981, 29973,29973,29974,29974,29975,29975,29976,29976,29977,29977,29978,29978,29979, 29979,29976,29979,29978,29978,29974,29974,29975,29975,29976,29976,0,29979,0, 29976,29975,29975,29975,29975,29976,29976,29977,29977,29978,29978,29977,29977, 29977,29977,29977,29978,29979,29979,29978,29978,0,29979,29978,29978,0,29977, 29978,29978,29978,29980,29981,29981,29982,29982,29981,29981,29982,29982,29983, 29983,29984,29984,29985,29985,29986,29985,29986,29986,29987,29989,29990]} 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 O-O 6. Nb5 {D00:1 d4 d5: Unusual lines.} Na6 7. h3 Ne4 8. c3 {The position is equal.} c6 9. Na3 Qb6 10. Qb3 {[#] } f6 $146 ({Predecessor:} 10... Nb8 11. Be2 Bf5 12. O-O Nd7 13. Rfc1 Rfe8 14. Bh2 e5 15. Bf1 exd4 16. cxd4 Qxb3 17. axb3 {1-0 (58) Bauer,C (2623)-Safarli,E (2598) Europe Chess INT 2020}) 11. Be2 e5 12. Bh2 exd4 13. exd4 Re8 14. O-O Nd2 15. Qxb6 axb6 16. Rfe1 Bh6 17. Rad1 Ne4 18. Bd3 Be6 19. Nc2 Bf7 20. c4 Bf8 21. a3 Nd6 22. Rxe8 Nxe8 23. Ne3 Nac7 24. Nd2 Rd8 25. cxd5 Nxd5 26. Ne4 Bh6 27. Nxd5 Bxd5 28. Bc2 $1 Kf8 29. Nc3 Bf7 30. d5 cxd5 31. g4 Bg7 32. Bf4 d4 33. Ne2 f5 34. gxf5 d3 35. Rxd3 Rxd3 36. Bxd3 Bxb2 37. fxg6 hxg6 38. a4 Nf6 39. Bh6+ Ke7 40. Nf4 Bc1 41. Bb5 Kd6 42. Bf8+ Kc7 43. Nd3 Bd2 44. Ne5 Be6 45. h4 Bf5 46. Nf7 Ne4 47. Bg7 Bc3 48. Bh6 Bf6 49. Bf4+ Kc8 50. h5 ({Better is} 50. f3 $14 Be6 51. Ne5) 50... g5 (50... gxh5 $15 51. f3 Be6 $1) 51. Nd6+ $14 Nxd6 52. Bxd6 { [%mdl 4096] Endgame KBB-KBB} Bg7 {[#]} 53. f4 (53. Be7 $1 $16) 53... Bh6 $11 54. fxg5 Bxg5 55. Bf8 Bd7 56. Kf2 Bxb5 $2 {[%mdl 8192] White stays focused until the end.} (56... Bg4 $11) 57. axb5 {KB-KB} Kd7 58. Kf3 Ke6 59. Ke4 Kf6 60. Bd6 Bd2 61. Bf4 Bb4 62. Be3 Bf8 63. Kd5 Kf5 64. h6 Kf6 65. Bd4+ Kg6 {[#]} 66. Bg7 $1 Bc5 67. Ke6 Be3 68. Kd7 Kf7 69. Kc7 Kg6 70. Kxb7 Kf7 71. Kc6 Kg6 72. Kd5 Kh7 73. Bf8 Kg8 74. Ke4 Bd2 75. Bg7 Kf7 76. Kd5 Be3 77. Kc6 $2 (77. Bd4 Bxh6 78. Bxb6 Bf4 79. Kc6 Bh2 80. Bc5 Kf6 81. b6 Bf4 82. Bd6) 77... Kg8 $2 { [%mdl 8192]} (77... Kg6 $11 78. Be5 Bxh6) 78. Kd5 Kf7 79. Ke5 Bd2 80. Ke4 Kg8 81. Kd5 Kf7 82. Kc6 Be3 83. Kb7 Kg8 84. Kc8 Kf7 85. Kd7 Kg6 86. Bf8 Bd4 87. Kc6 Be3 88. Kd5 Bd2 89. Kc6 Be3 90. Kc7 Bf2 91. Kd7 $2 (91. Bd6 {mates} Kxh6 92. Kc6 Kg5 93. Bc7 Kf5 94. Bxb6 Bh4 95. Bc5 Bg3 96. b6) 91... Be3 $2 {[%mdl 8192]} (91... Bd4 $11 92. Kc6 Bg1) 92. Kc6 {White mates.} Bf2 93. Bd6 Kxh6 94. Bc7 Kg6 95. Bxb6 Be1 96. Bc7 Bf2 97. Bd6 Kf5 98. Bc5 Bg3 99. b6 {[%CAl Bb5b6,Bb6b7] [%mdl 32]} Ke6 100. b7 Bh2 101. Bb6 Bb8 102. Bc7 Ba7 103. Kb5 Kd7 {[#]} 104. Ka6 $1 {Weighted Error Value: White=0.08/Black=0.21} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "5.2"] [White "Christiansen, Johan-Sebastian"] [Black "Tari, Aryan"] [Result "0-1"] [ECO "C27"] [WhiteElo "2618"] [BlackElo "2639"] [Annotator "TA"] [PlyCount "118"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,118,-14,-10,-25,-15,-8,-16,-20,-13,-27,-25,-35,-46,-29,-36,-29,-26, -41,-28,-47,-49,-55,-39,-50,-26,-47,0,-16,0,0,0,0,0,-17,-10,-26,-22,-72,-60, -41,-48,-49,-52,-54,-51,-47,-45,-65,-56,-163,-157,-165,-166,-469,-452,-457, -472,-454,-453,-457,-439,-418,-299,-304,-281,-287,-282,-295,-293,-285,-288, -262,-212,-200,-193,-294,-290,-289,-282,-293,-206,-308,-231,-348,-330,-352, -350,-333,-308,-477,-477,-476,-350,-810,-879,-852,-845,-745,-734,-1494,-1371, -29968,-29971,-29970,-29971,-29974,-29975,-29977,-29978,-29980,-29981]} 1. e4 e5 2. Nc3 Nf6 3. Bc4 Bc5 4. d3 c6 5. f4 d5 6. exd5 {[#] C27: Vienna Game: 2... Nf6 3 Bc4 Nxe4.} O-O $146 ({Predecessor:} 6... Ng4 7. Nf3 Nf2 8. Qe2 Nxh1 9. Qxe5+ Qe7 10. Ne4 f6 11. Qxe7+ Bxe7 12. Be3 cxd5 13. Bxd5 {1/2-1/2 (71) Hauge, L (2504)-Pantzar,M (2410) Stockholm 2020}) 7. fxe5 Ng4 {Threatens to win with . ..Nf2.} 8. d4 {[#]The position is equal.} Nxe5 $1 9. dxc5 {Be2 is the strong threat.} Qh4+ 10. Kf1 {Black must now prevent Be2.} Qxc4+ {[%mdl 64] Double Attack} 11. Qe2 cxd5 12. Qxc4 dxc4 13. Bf4 Nbc6 14. Nge2 Bf5 15. Rc1 Rad8 16. h3 h6 17. Kf2 a6 18. Rhd1 Rxd1 19. Nxd1 Rd8 20. Ne3 Bh7 21. g4 f6 22. a3 Kf7 23. Ng2 g5 24. Bxe5 Nxe5 25. Ne3 Rc8 26. Rd1 Rxc5 27. Rd8 Rb5 28. Rc8 $1 Bg6 $1 29. Rc7+ {White is now going downhill.} ({White should play} 29. Nd4 $1 $15 Rb6 30. Rxc4) 29... Ke8 $19 30. Nd4 Rxb2 31. Nd5 $2 {[#]} (31. Ke1 {is tougher.}) 31... Bf7 $1 {[%CAl Rf7d5]} 32. Re7+ Kd8 33. Ne6+ Bxe6 34. Rxe6 Rxc2+ {[%mdl 4096] Endgame KRN-KRN} 35. Ke3 Rc1 {And now ...Re1+ would win.} 36. Kd2 Rh1 37. Nxf6 Nc6 ({And not} 37... Rxh3 38. Re8+ Kc7 39. Rxe5 $11) 38. Kc3 Rxh3+ 39. Kxc4 Rxa3 40. Nd5 Kd7 41. Rxh6 Ra1 42. Nb6+ (42. Nf6+ $142 Ke6 43. Ne4+ Ke5 44. Nxg5) 42... Kc7 43. Nd5+ Kb8 44. Rh5 Ne5+ 45. Kc5 (45. Kd4 $142 Nxg4 46. Rxg5) 45... Rc1+ 46. Kd6 (46. Kd4 $142 Nc6+ 47. Ke3) 46... Nxg4 47. Rxg5 Rc6+ 48. Ke7 Nf2 49. Kd7 (49. Nb4 $142 Rc4 50. Nd5) 49... Ne4 50. Rf5 Ka7 51. Ne7 $2 (51. Nb4 Rc4 52. Nd5) 51... Nf6+ 52. Kd8 Rd6+ 53. Kc8 b5 54. Rf3 Nd5 55. Nf5 Rf6 { Black mates.} 56. Kd7 Kb6 57. Rf1 a5 {[%CAl Ba6a5,Ba5a4][%mdl 32]} 58. Rf3 a4 59. Rf2 {[#]} Ne3 $1 {[%mdl 576] Pin. Weighted Error Value: White=0.53/ Black=0.11} 0-1 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "5.3"] [White "Carlsen, Magnus"] [Black "Radjabov, Teimour"] [Result "1/2-1/2"] [ECO "C65"] [WhiteElo "2847"] [BlackElo "2765"] [Annotator "TA"] [PlyCount "90"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,90,22,13,12,8,24,14,10,9,16,16,40,13,23,25,25,20,25,16,14,18,37,31, 26,20,29,22,25,31,19,25,24,20,59,12,10,11,12,12,12,0,36,21,41,6,0,0,20,0,0,0,0, 0,1,2,2,0,4,4,2,3,4,4,3,3,8,4,4,4,8,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 O-O 6. O-O d6 7. h3 Ne7 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5.} 8. d4 Bb6 9. Re1 Ng6 10. a4 a6 11. Bf1 Re8 12. Nbd2 {[#]} Ba7 $146 ({Predecessor:} 12... d5 13. exd5 exd4 14. Rxe8+ Qxe8 15. Nc4 Nxd5 16. Nxb6 Nxb6 17. a5 Nd5 18. Qxd4 Be6 {1-0 (50) Munoz Sanchez,M (2246)-Aguirre Burgos,F (1834) Guayaquil 2019}) 13. b4 c6 14. Qc2 Be6 15. Bb2 a5 16. b5 Qc7 17. bxc6 bxc6 18. Rad1 Rab8 19. Ba3 d5 20. exd5 Bxd5 21. c4 Bxf3 22. Nxf3 {[#] And now dxe5 would win.} exd4 23. c5 Rxe1 24. Rxe1 Rd8 $1 25. Bb2 Qf4 $1 26. Bc1 d3 27. Bxd3 Qb4 28. Bxg6 hxg6 {The position is equal.} 29. Be3 Qe4 30. Qxe4 (30. Qb3 {looks sharper.} Qb4 31. Qxb4 axb4 32. Rc1 b3 33. Ne5) 30... Nxe4 31. Ne5 Bxc5 32. Nxc6 Rd3 (32... Rd6 {is more complex.} 33. Bxc5 Nxc5 34. Nxa5 Ra6 35. Nc4 Rxa4 36. Ne5 g5) 33. Bxc5 Nxc5 $11 {[%mdl 4096] Endgame KRN-KRN} 34. Re5 Nxa4 35. Rxa5 Nb6 36. Ra6 Rd1+ 37. Kh2 Nc4 38. Ra4 Rc1 (38... Nb6 {keeps more tension.} 39. Rb4 Nd7 40. h4 f6 41. Nd4 Nc5) 39. Ra8+ Kh7 {[#] Threatens to win with ...Nb6.} 40. Nd8 Nd2 41. g4 (41. h4 {feels hotter.} Rc7 42. Kh3 Ne4 43. f3 Nf2+ 44. Kg3) 41... Rc7 42. Kg2 Ne4 43. Ra4 Nd6 {White must now prevent ...Rc8.} 44. Rd4 Nb7 45. Nxb7 Rxb7 {Weighted Error Value: White=0.06/Black=0.05} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.24"] [Round "5.4"] [White "Nakamura, Hikaru"] [Black "Vidit, Santosh Gujrathi"] [Result "1/2-1/2"] [ECO "A30"] [WhiteElo "2736"] [BlackElo "2726"] [Annotator "TA"] [PlyCount "107"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,107,-42,-40,-45,-33,-50,-37,-62,-20,-97,-88,-125,-130,-141,-140,-144, -145,-147,-112,-122,-110,-127,-12,-6,-13,-15,-10,-10,-8,-5,-5,-14,-2,0,14,20, 13,6,18,22,71,0,0,0,0,0,20,14,32,32,25,25,26,33,31,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. O-O e5 5. c4 d5 6. cxd5 Nxd5 7. Nc3 Be6 $1 {[%mdl 4] now scores much better than the old 7...Nc7.} 8. d3 Be7 9. Nd2 {A30: Symmetrical English: Double Fianchetto and Hedgehog.} O-O 10. Nc4 Qd7 11. Ne3 {Black is slightly better.} Nc7 12. f4 (12. Qa4 $11 {keeps the balance.}) 12... exf4 $17 13. gxf4 {[#]} f5 $1 {[#]} 14. Bd2 $146 ({Predecessor:} 14. Nc2 Rad8 15. Be3 b6 16. Ne1 Nd4 17. Bf2 Bf6 18. Nf3 Nxf3+ 19. Bxf3 Rfe8 20. Qc1 {0-1 (46) Vikrant,J (1649) -Swapnil,S (2545) Sonipat 2017}) 14... b5 15. Rc1 Rad8 16. b3 a6 17. Be1 Rfe8 18. Bf2 Bf7 (18... Bf6 $17 19. Qd2 g6) 19. Nxf5 $1 $11 Qxf5 20. Bxc6 Qg6+ { [%mdl 64] Double Attack} 21. Bg2 c4 22. bxc4 bxc4 23. d4 Nd5 24. f5 Qxf5 (24... Qg5 {is more complex.} 25. Nxd5 Bxd5 26. Bg3 Bf6 27. Bxd5+ Rxd5 28. Rxc4 Qe3+) 25. e4 Nxc3 26. Rxc3 Qa5 27. Qc2 Bb4 {[#]} 28. Rg3 (28. Rf3 $1 $16 {[%CAl Rf3f7] Black must now prevent Rxf7!} Be6 29. d5) 28... c3 29. d5 {aiming for Rxg7+.} Bg6 30. Qb3 Kh8 ({Don't go for} 30... Bxe4 $2 31. Bd4 $18) 31. a3 Bc5 32. Qxc3 Bxf2+ 33. Rxf2 Qxc3 34. Rxc3 {Rc4 is the strong threat.} Bxe4 35. Re2 (35. Rd2 {with more complications.} Bxg2 36. Kxg2 Kg8 37. Rc6 Re5 38. d6) 35... Bxg2 {The position is equal.} 36. Rxe8+ Rxe8 37. Kxg2 {[%mdl 4096] Endgame Strongly threatening d6. KR-KR} Kg8 38. Rc6 Rd8 39. d6 a5 40. Ra6 Kf7 41. a4 Ke6 42. d7+ Kxd7 43. Rxa5 Kc6 44. Ra7 Rd2+ 45. Kg3 Rd3+ 46. Kf4 Rh3 47. Rxg7 Rxh2 48. a5 Kb5 49. Kg3 Rh6 (49... Rh5 {feels hotter.} 50. Kg4 Rh1 51. Rg5+ Ka6 52. Kf4 Rh4+) 50. Rg5+ Ka6 51. Kg4 Rg6 52. Rxg6+ hxg6 53. Kg5 Kxa5 54. Kxg6 { Weighted Error Value: White=0.09/Black=0.10} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "5.5"] [White "Firouzja, Alireza"] [Black "Dominguez Perez, Leinier"] [Result "1-0"] [ECO "D02"] [WhiteElo "2759"] [BlackElo "2758"] [Annotator "RC"] [PlyCount "113"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "900+10"] 1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nf6 { [%emt 0:00:00]} 3. Bf4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 4. Nbd2 {[%emt 0: 00:00]} c5 {[%emt 0:00:04]} 5. e3 {[%emt 0:00:07]} Qb6 {[%emt 0:00:03]} 6. Rb1 {[%emt 0:01:18]} Bd6 {[%emt 0:00:03]} 7. c3 {[%emt 0:01:54]} cxd4 {[%emt 0:00: 12]} 8. Bxd6 {[%emt 0:01:15]} dxe3 {[%emt 0:00:04]} 9. Ba3 {[%emt 0:00:03]} exd2+ {[%emt 0:00:03]} 10. Qxd2 {[%emt 0:00:58]} Ne4 {[%emt 0:00:04]} 11. Qc2 { [%emt 0:00:01]} Na6 {[%emt 0:00:01]} 12. Nd4 {[%emt 0:00:53]} Bd7 {[%emt 0:01: 52]} 13. f3 {[%emt 0:02:14]} Nd6 {[%emt 0:06:23]} 14. Qf2 {[%emt 0:02:44]} e5 { [%emt 0:00:03]} 15. Ne6 {[%emt 0:03:37]} Bxe6 {[%emt 0:02:24]} 16. Qxb6 { [%emt 0:00:02]} axb6 {[%emt 0:00:00]} 17. Bxd6 {[%emt 0:00:01]} f6 {[%emt 0:00: 11]} 18. f4 {[%emt 0:00:00]} O-O-O {[%emt 0:01:53]} 19. fxe5 {[%emt 0:00:17]} fxe5 {[%emt 0:00:01]} 20. Be7 {[%emt 0:01:02]} Rd7 {[%emt 0:00:02]} 21. Bh4 { [%emt 0:00:03]} Nc5 {[%emt 0:00:01]} 22. Bb5 {[%emt 0:00:11]} Rf7 {[%emt 0:00: 02]} 23. Rf1 {[%emt 0:00:02]} Rxf1+ {[%emt 0:02:15]} 24. Kxf1 {[%emt 0:00:25]} Rf8+ {[%emt 0:00:20]} 25. Kg1 {[%emt 0:00:02]} Bd7 {[%emt 0:00:53]} 26. Bf1 { [%emt 0:00:10]} Ne6 {[%emt 0:00:59]} 27. Re1 {[%emt 0:00:13]} e4 {[%emt 0:00: 28]} 28. c4 {[%emt 0:00:14]} Bc6 {[%emt 0:00:52]} 29. b4 {[%emt 0:00:27]} dxc4 {[%emt 0:00:15]} 30. Bxc4 {[%emt 0:00:00]} Nc7 {[%emt 0:00:13]} 31. a4 { [%emt 0:00:39]} Bxa4 {[%emt 0:00:11]} 32. Rxe4 {[%emt 0:00:03]} Re8 {[%emt 0: 00:15]} 33. Rf4 {[%emt 0:00:22]} Bc6 {[%emt 0:00:01]} 34. Bd3 {[%emt 0:00:26]} h6 {[%emt 0:00:17]} 35. Rf7 {[%emt 0:00:06]} Bd7 {[%emt 0:00:14]} 36. Rxg7 { [%emt 0:00:06]} b5 {[%emt 0:00:09]} 37. Rh7 {[%emt 0:00:20]} Re3 {[%emt 0:00: 01]} 38. Rh8+ {[%emt 0:00:15]} Ne8 {[%emt 0:00:04]} 39. Bg6 {[%emt 0:00:03]} Bc6 {[%emt 0:00:04]} 40. Rxh6 {[%emt 0:00:08]} Re2 {[%emt 0:00:15]} 41. Bf2 { [%emt 0:00:09]} Nd6 {[%emt 0:00:20]} 42. Bh5 {[%emt 0:00:34]} Rd2 {[%emt 0:00: 02]} 43. Bg4+ {[%emt 0:00:03]} Kd8 {[%emt 0:00:19]} 44. h4 {[%emt 0:00:16]} Ne4 {[%emt 0:00:10]} 45. Bb6+ {[%emt 0:00:03]} Ke7 {[%emt 0:00:03]} 46. Bf3 { [%emt 0:00:04]} Rc2 {[%emt 0:00:18]} 47. Rg6 {[%emt 0:00:24]} Kf7 {[%emt 0:00: 07]} 48. h5 {[%emt 0:00:11]} Nd2 {[%emt 0:00:18]} 49. Bxc6 {[%emt 0:00:09]} bxc6 {[%emt 0:00:04]} 50. Bd4 {[%emt 0:00:13]} Rc4 {[%emt 0:00:01]} 51. Rg7+ { [%emt 0:00:24]} Kf8 {[%emt 0:00:08]} 52. Rg4 {[%emt 0:00:13]} Nb3 {[%emt 0:00: 10]} 53. h6 {[%emt 0:00:04]} Rxd4 {[%emt 0:00:21]} 54. h7 {[%emt 0:00:03]} Rxg4 {[%emt 0:00:01]} 55. h8=Q+ {[%emt 0:00:02]} Ke7 {[%emt 0:00:03]} 56. Qe5+ { [%emt 0:00:07]} Kd8 {[%emt 0:00:09]} 57. Qd6+ {[%emt 0:00:02]} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "5.6"] [White "Duda, Jan-Krzysztof"] [Black "Le, Quang Liem"] [Result "1-0"] [ECO "E10"] [WhiteElo "2729"] [BlackElo "2709"] [Annotator "TA"] [PlyCount "115"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,115,40,48,48,60,51,53,39,54,33,44,38,52,54,74,75,70,77,101,107,118,88, 106,106,91,95,104,89,116,60,70,70,184,138,164,107,150,14,161,175,165,154,236, 236,234,232,225,223,226,208,225,182,182,175,168,143,176,159,152,126,145,117, 170,98,147,148,153,157,141,141,257,267,317,275,418,418,418,379,1758,1643,1652, 1548,1552,1375,2627,2586,2004,2028,6075,5869,9678,8640,29956,12208,29959,9212, 12849,7995,29977,29978,29978,29979,29979,29980,29980,29981,29975,29974]} 1. d4 Nf6 2. c4 e6 3. Nf3 a6 4. Bg5 b5 5. e4 Bb7 6. e5 {E10: Blumenfeld Gambit.} h6 { [#]} 7. Be3 $146 (7. exf6 hxg5 8. h4 bxc4 $19) ({Predecessor:} 7. Bxf6 gxf6 8. cxb5 Rg8 9. bxa6 Nxa6 10. g3 c5 11. Bg2 cxd4 12. O-O fxe5 13. Nxe5 Bxg2 14. Kxg2 {0-1 (31) Ayatollahi,E (1883)-Kuciel,W (2142) Vienna 2008}) 7... Bb4+ 8. Bd2 {White is slightly better.} Bxd2+ 9. Nbxd2 Ne4 10. cxb5 Nxd2 11. Qxd2 (11. Kxd2 O-O $11) 11... O-O 12. bxa6 Nxa6 13. Be2 c5 14. O-O Qb6 15. Rfd1 Rfb8 16. b3 {[%CAl Bb2b3,Bb3b4][%mdl 32]} Bd5 17. dxc5 Nxc5 18. Nd4 Ra5 19. Rdb1 (19. Qe1 $16) 19... Ne4 20. Qe3 Bb7 ({Black should try} 20... Ba8 $14) 21. b4 $18 Rxe5 22. a4 ({White should play} 22. Bd3 $18) 22... Rd5 {[#]} 23. Rd1 ({ Much weaker is} 23. Qxe4 $6 Rxd4 24. Qe3 Be4 $11) (23. Nf5 $1 $16 {[%mdl 512]} Qxe3 (23... Qd8 24. Ng3) 24. Nxe3) 23... Nf6 (23... Qxb4 $11 24. Qxe4 Rg5) 24. b5 Ra8 25. Bf3 e5 (25... Rd6 $16 {was necessary.} 26. a5 Rxa5 27. Rxa5 Qxa5) 26. Bxd5 exd4 27. Qxd4 Qxd4 {[#]} 28. Bxf7+ $1 {[%mdl 512]} Kxf7 29. Rxd4 Ra5 30. f3 Ke7 31. Re1+ Kd8 32. Re5 d5 33. h4 Kd7 34. Kf2 Kd6 35. Re2 Ra8 (35... g5 $16 36. Rc2 Nh5) 36. Ke1 (36. Rf4 $18) 36... Kc5 37. Rf4 {Threatens to win with Re7.} d4 38. Rc2+ Kd5 39. Rc7 {[%mdl 64] Double Attack} Bc8 {[#]} (39... Ke5 $16) 40. b6 $1 ({Don't go for} 40. Rxg7 $2 Nh5 $19) 40... Ke5 41. g3 g5 ( 41... Rb8 {was called for.} 42. a5 (42. Rxg7 Rxb6 43. Rc7 Be6 $16) 42... Kd5) 42. hxg5 hxg5 43. Rc5+ Kd6 $2 {[#]} (43... Nd5 44. Rf8 Bb7 45. Rxa8 Bxa8) 44. Rxc8 $1 {[%mdl 512]} Rxc8 45. Rxf6+ {[%mdl 4096] Endgame KR-KR} Kc5 46. a5 { b7 is the strong threat.} Rb8 47. Kd2 Kb5 48. Kd3 Ka6 49. g4 Kxa5 50. Kxd4 Ka6 51. Ke5 Rg8 52. Kf5 Kb7 53. Rg6 Rf8+ 54. Kxg5 {White mates.} Rxf3 55. Rf6 Rg3 56. Kh5 Rh3+ {[#]} 57. Kg6 $1 Rh1 58. g5 {Weighted Error Value: White=0.17/ Black=0.72} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "5.8"] [White "So, Wesley"] [Black "Mamedyarov, Shakhriyar"] [Result "1-0"] [ECO "A36"] [WhiteElo "2770"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "109"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 25,109,26,27,17,22,12,24,0,0,0,14,3,18,9,13,0,29,13,122,79,90,85,114,97, 81,66,79,38,56,6,77,64,56,19,48,43,60,59,246,235,395,391,406,406,373,356,400, 380,385,354,445,435,464,365,467,387,478,435,526,478,478,472,470,299,311,0,468, 466,420,449,458,451,980,935,29985,1740,29986,29987,29984,29985,29985,29986, 29985,29979,29971,29973]} 1. c4 e5 2. g3 g6 3. Nc3 Bg7 4. Bg2 Nf6 5. e4 O-O 6. Nge2 c5 7. O-O Nc6 8. d3 d6 9. a3 a6 10. Rb1 Rb8 11. b4 cxb4 12. axb4 b5 13. cxb5 axb5 14. h3 {A36: Symmetrical English vs ...g6:4 Bg2 Bg7.} Be6 15. f4 exf4 16. gxf4 {White has an edge.} Ne7 17. Be3 {[#]} d5 $146 ({Predecessor:} 17... Qd7 18. Kh2 Nh5 {1/2-1/2 (18) Karlsson,L (2476)-Grigore,G (2517) Sitges 2008}) 18. Bc5 Re8 19. Qe1 dxe4 20. dxe4 Bc4 21. Qf2 Nd7 (21... Nh5 $11 {remains equal.}) 22. Rfd1 $16 Qc8 23. Bd6 Ra8 24. Nd4 Bxd4 25. Rxd4 Ra3 26. Rc1 Qa6 { Strongly threatening ...Rxc3!} 27. Kh2 Ra1 (27... Qb6 $1 $11) 28. Rxa1 Qxa1 29. Qg3 Qb2 30. Rd1 Nc8 31. Bc7 $36 {[%mdl 2048] White has the initiative.} Nf6 { [#]} ({Black should play} 31... Ncb6 $14) 32. Qg5 $1 $18 Qxc3 (32... Kg7) 33. Be5 Rxe5 34. Qxf6 {[%mdl 64] Threatening mate with Rd8+. Pin} Rd5 35. Qxc3 Rxd1 36. Qe5 Nd6 37. f5 Rd2 38. Kg3 Rd3+ 39. Kh4 h6 40. Kg4 Kh7 41. Bf3 Kg8 42. h4 gxf5+ 43. exf5 Nxf5 44. Qb8+ (44. Qxf5 $2 Be6 $19) (44. Kxf5 Rxf3+ 45. Kg4 Rd3 $14) 44... Kg7 {[#]} 45. Qe5+ (45. Kxf5 Rxf3+ 46. Kg4 Rd3 $14) (45. Be4 $142 $1 Ne3+ 46. Kf3) 45... Kg8 46. Be4 {[%mdl 64] Double Attack} ({Avoid the trap} 46. Qxf5 $2 Be6 $19) ({Less strong is} 46. Kxf5 Rxf3+ 47. Kg4 Rd3 $14) 46... Ne3+ 47. Kf3 ({Don't blunder} 47. Kh5 $2 {[#]} Rd5 $1 $19 {[%mdl 512]}) 47... Rb3 48. Kf4 Nd1 (48... Be6 $142 49. Qxb5 Nc4) 49. Bc2 {[%mdl 64] Double Attack} Rxb4 50. Qd6 (50. Kf5 $142 Nc3 51. Qg3+ Kf8 52. Qd6+ {[%mdl 64] Double Attack} Ke8 53. Qxb4 Nd5 54. Qc5 Kd7 55. Be4 Ne7+ 56. Kf6 Ng8+ 57. Kg7) 50... Bb3+ 51. Qxb4 {White mates.} Bxc2 52. Qxb5 Nf2 53. Qe2 Nd3+ 54. Kg3 Bb1 55. Qd1 { Weighted Error Value: White=0.21/Black=0.59} 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "5.7"] [White "Praggnanandhaa R"] [Black "Karjakin, Sergey"] [Result "1-0"] [ECO "E15"] [WhiteElo "2608"] [BlackElo "2757"] [Annotator "Sagar Shah"] [PlyCount "103"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 0,61,19,34,27,-9,5,8,34,5,22,-8,13,10,12,12,21,22,11,13,15,19,25,12,18, 16,11,38,15,3,-2,-42,-34,-41,-38,-41,-40,-40,-29,-22,-25,-25,-30,-31,-27,-15, -17,-23,19,-24,-1,-3,0,0,27,-15,20,0,6,-13,9,-5,30,21]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Nc3 d5 8. cxd5 exd5 9. Bg2 O-O 10. O-O Bb7 11. Ne5 Nbd7 12. Bf4 Re8 13. Rc1 Nf8 {This has all been standard until now. Pragg starts getting ambitious and the minister of defence shows his class.} 14. Nb5 (14. e3 Ne6 15. h4) 14... Ne6 $1 15. Nc6 {The interesting thing is that Karjakin has already reached this position before against Boris Gelfand when Pragg was 6 years old!} Qd7 16. Nxe7+ Rxe7 17. Nc3 {Pragg has to retreat and that is not a great feeling.} (17. a4 c6 18. Nc3 Nxf4 19. gxf4 a5 20. e3 Ba6 21. Re1 Rc8 22. Kh1 Ng4 23. Qf3 Bd3 24. Qg3 Rce8 25. Rg1 f5 26. Bh3 Nh6 27. Qh4 Kh8 28. Rg5 Qd6 29. Rh5 Rf7 30. Bf1 Qa3 31. Rd1 Bc2 32. Rd2 Qc1 { 0-1 (32) Gelfand,B (2738)-Karjakin,S (2779) Astana 2012}) (17. Nxc7 Nxf4 18. gxf4 Rc8 $19 {The knight is trapped on c7.}) 17... Nxf4 18. gxf4 a5 19. e3 Ba6 20. Re1 Rd8 21. Rc2 {Both sides have their trumps in this position. White has the c-file, and the c7 weakness to attack, but Black has such nicely placed pieces.} g6 22. Qd2 h5 (22... Ne4 $1 $15) 23. Rec1 h4 24. h3 $1 {Pragg stops the pawn in its tracks for now.} Qf5 25. Na4 Rdd7 26. Qd1 Kg7 27. Nb2 {Pragg has managed to reroute the knight and now hopes that he can exchange the bishops with Bf1 and then the knight can move from d3 to e5.} Kh6 28. Rc6 Bb5 29. R6c2 Ba6 30. Kh2 $1 {Even though Karjakin may not have repeated (or he may have!) it takes courage from Pragg's end to break the repetition!} Kg7 31. Bf1 Bxf1 32. Qxf1 Ne4 (32... c5 {This was Black's chance!} 33. dxc5 d4 34. c6 Rc7 { The slightly weakened position of the white king along with his pieces not so well placed gives Black very good compensation.} 35. Qd3 Qxd3 36. Nxd3 dxe3 37. Ne5 exf2 $13) 33. Rc6 Kf8 34. Nd3 f6 {Sergey felt that he had things under control having prevented the knight from coming to e5. Little did he know what Pragg was preparing for him.} 35. R1c2 Ke8 36. Qg2 {There is no good discovered attack that black can create on the knight on e4.} Nd6 {Ne1-f3 was what Pragg would go for I felt and it looked very natural, but. ..} 37. Ne5 $5 {Objectively maybe not the decision, but perfect for a rapid game.} fxe5 38. dxe5 (38. fxe5 {was also possiible but with dxe5, the f2 pawn would be not hanging in many lines.}) 38... Ne4 (38... d4 $5 {how difficult or easy it is to find this move?} 39. exd6 dxe3 $1 40. dxe7 (40. fxe3 Rxe3 41. Re2 Qxf4+ 42. Kh1 Rxe2 43. Qxe2+ Kd8 44. dxc7+ Rxc7 45. Rxg6 $13) 40... Qxf4+ 41. Kh1 Rd1+ $19) (38... Nc4 39. R2xc4 $3 dxc4 40. Rxg6 {White is winning here because there are two threats - Rg8+ and Qa8+} (40. Rf6 {is also strong.}) 40... Kf7 ( 40... Kd8 41. Qa8#) (40... Re6 41. Rg8+ Ke7 42. Qg7+ Qf7 43. Qg5+ $18 {Black pieces crowd his king's escape.}) 41. Rf6+ $18) 39. Rxg6 $1 Kd8 {Karjakin is called the minister of defence for a reason! He is not going to throw in the towel so soon.} 40. Rg8+ Re8 41. Rxe8+ Kxe8 42. Qg8+ Qf8 43. Qe6+ Kd8 $1 44. Qc6 Nc5 $1 45. Rc1 $1 {Brilliant play by Pragg with a minute on his clock. The rook is going to move from c1 to g1.} d4 $5 46. Rg1 $1 d3 $4 (46... Ke7 { The only move to hold the game.} 47. Qf3 d3 48. f5 d2 49. f6+ Ke8 50. Qh5+ Kd8 51. Qf3 Ke8 52. Qh5+ {With a weird repetition. But what are the chances both players find such accurate moves under time pressure.}) 47. Rg8 $3 {Pragg is not going to miss such tactics!} Qxg8 48. Qa8+ Ke7 49. Qxg8 Rd8 50. Qg7+ Ke6 51. f5+ Kd5 (51... Kxf5 52. Qf6+ Ke4 53. Qxd8 $18) 52. e6 {What a game by Pragg! He beat the minister of defence where his forte lies - by attacking him relentlessly!} (52. e6 Kc6 53. e7 Re8 54. Qf7 Kd7 55. f6 d2 56. Qd5+ $18) 1-0 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "4.6"] [White "Vidit, Santosh Gujrathi"] [Black "Carlsen, Magnus"] [Result "1/2-1/2"] [ECO "E34"] [WhiteElo "2726"] [BlackElo "2847"] [Annotator "Sagar Shah"] [PlyCount "149"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 0,23,19,34,29,0,-11,-10,25,-17,-4,-39,18,-10,8,19,19,23,15,22,16,22,33, 43,40,43]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 {This is one of Vidit's favourite opening since childhood. White gets the two bishops and positional superiority. Black gets the lead in development. Somehow Vidit is able to control such positions very well due to his excellent positional understanding. } d5 5. cxd5 Qxd5 $5 (5... exd5 {is the normal way to play.}) 6. e3 (6. Nf3 Qf5 {is a normal way to go. But you cannot do against e3 because then Bd3 is possible.}) 6... c5 7. Bd2 Bxc3 8. bxc3 (8. Bxc3 {would lead to different positions.} cxd4 9. Bxd4 Nc6 10. Bc3 O-O 11. Nf3 Rd8 12. Be2 Qe4 13. Rc1 Qxc2 14. Rxc2 Nd5 $11 {Carlsen has played this before and drawn against Mamedyarov.} ) 8... b6 9. f3 $5 {This might be Vidit's preparation, because it has been played only in 1 game before.} (9. Nf3 Bb7 {is another way to go.}) 9... Qc6 $6 {Carlsen might have been afraid of the e4 push and hence he went for this idea to get his queen out. But now Vidit gets a risk free edge.} (9... Nc6 10. e4 Qd7 11. Be3 cxd4 12. cxd4 Nxd4 13. Qc3 e5 14. Ne2 $44) 10. Qb3 {Threatening Bb5.} Ba6 11. Bxa6 Nxa6 12. Ne2 {White has a nice center and also has caught up in development.} O-O 13. e4 Rfc8 14. Kf2 {Why did Vidit choose to put his king on f2? I am not sure. I think it was just an intuitive decision where he felt that the endgame might come soon and he could save a tempo with his king already being on f2.} (14. O-O $5) 14... Nb8 15. a4 Nbd7 16. Bf4 a6 17. Rab1 h6 18. Rhd1 $16 {Very fine opening play has led to Vidit being clearly better. But it's one thing to get a better position against Carlsen and quite another to actually keep it going.} Qb7 19. h4 $5 cxd4 20. cxd4 Rc6 21. Rdc1 Rac8 22. Qd3 Rxc1 23. Bxc1 Ne8 24. Bf4 Rc6 25. g4 Qc8 26. g5 $1 {Opening up the h-file looking! Maybe there is an attack there somewhere!} hxg5 27. hxg5 Rc4 28. Qa3 ( 28. Rh1 $5 {was an interesting option. I am not sure if Magnus would have fell for the bait of taking the pawn on a4.} Rxa4 $4 (28... b5 29. axb5 axb5 30. Qa3 $5) 29. Rc1 $1 Qd8 30. Qc2 $1 b5 31. Qc8 $18) 28... Rc2 29. Rc1 Rxc1 30. Bxc1 ( 30. Qxc1 Qxc1 31. Nxc1 {This is a very pleasant endgame. Why didn't Vidit take with the queen? He thought perhaps he could penetrate to e7 with his queen. Also he has had not great experience going into endgames against Magnus and hence he tried keeping more pieces on the board.}) 30... Nf8 31. Qd3 Nd6 32. d5 Nc4 {Things felt like they were moving out of control for Vidit here. He was low on time and also Magnus is a beast in the endgame. But this time the Indian GM kept his cool and came out of the woods.} 33. Be3 exd5 34. exd5 b5 35. axb5 axb5 36. Nd4 Qb8 37. f4 Ng6 38. Kg3 Qe8 39. Nf5 Ne7 40. Nxe7+ Qxe7 41. Bf2 Nd6 42. Kf3 (42. Bc5 Ne4+ $19) 42... Qd7 43. Kg3 b4 44. Bc5 Qf5 45. Qxf5 Nxf5+ 46. Kf3 b3 47. Ba3 Nd6 {At this point Vidit had to find a series of only moves. Not too difficult for him, but with Magnus being his opponent and the time ticking down, it was commendable!} 48. Ke2 (48. Bxd6 $2 b2 $19) 48... Nc4 49. d6 $1 Nxd6 50. Kd3 $1 {Now everything is under control.} Nf5 51. Kc4 Kh7 52. Kxb3 Nd4+ 53. Kc4 Ne6 54. f5 (54. Bd6 Kg6 55. Kd3 Kf5 56. Ke3 {was a way to draw the game, but Vidit's motto has been not to fall into passive positions.}) 54... Nxg5 55. Kd5 Nf3 56. Bc1 Ng1 57. Ke4 Ne2 58. Bd2 {The bishop and the f5 pawn form a barrier agains the black king from coming up.} Ng3+ 59. Kf4 Nh5+ 60. Kg4 Nf6+ 61. Kf3 Kg8 62. Bc3 Nd5 63. Bb2 f6 64. Ba3 Kf7 65. Ke4 Nb6 66. Bc5 Nd7 67. Bd6 Nb6 68. Bc5 Nc8 69. Ba3 Ne7 70. Bb4 Ke8 71. Ba3 g6 72. fxg6 Nxg6 73. Bb2 Ne5 74. Bxe5 fxe5 75. Kxe5 {A hard fought draw that would have enhanced the confidence of Vidit.} 1/2-1/2 [Event "New In Chess Classic Prelims 2021"] [Site "Chess24"] [Date "2021.04.17"] [Round "2.7"] [White "Vidit, Santosh Gujrathi"] [Black "Aronian, Levon"] [Result "1/2-1/2"] [ECO "E04"] [WhiteElo "2726"] [BlackElo "2781"] [Annotator "Sagar Shah"] [PlyCount "57"] [EventDate "2021.04.24"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 0,24,25,29,21,-10,-10,12,15,-19,-19,-7,8,5,22,16,15,37,28,-8,8,-5,17,14, 8,13,-2]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. dxc5 (7. Qa4 {is another possible line.}) (7. Ne5 {is another.}) 7... Qxd1 8. Rxd1 Bxc5 9. Nfd2 $5 {This is just played in 50 games!} (9. Nbd2 {is the most played move here.} c3 10. bxc3 O-O 11. Nb3 Be7 12. Nfd4 {Vidit has played this before from Black side against Wesley So, also this position is quite well known. So the Indian GM avoids clearly understanding that Levon would be well prepared.}) 9... Na5 10. Na3 Bxa3 11. bxa3 {White is a pawn down. He also has this mangled pawn structure. Yet, the bishop pair and the strong bishop on g2, compensate for these factors.} O-O 12. Bb2 $146 {A new idea by Vidit. Earlier Ne4 has been played twice against Anand, with both games ending in draws.} (12. Ne4 Nxe4 13. Bxe4 e5 14. Bb2 Nc6 (14... Re8 15. Bc3 Nc6 16. Rab1 h6 17. f3 Re7 18. Kf2 f6 19. Bd5+ Kh7 20. Be4+ Kg8 21. Bb4 Rc7 22. Bd6 Rd7 23. Bd5+ Kh8 24. Bxc4 Nd4 25. Bc5 Rc7 26. Bxd4 Rxc4 27. Be3 b6 28. Rd8+ Kh7 29. Rc1 Rxc1 30. Bxc1 Bb7 31. Rxa8 Bxa8 32. e4 Kg6 {1/2-1/2 (32) Karjakin,S (2753)-Anand,V (2767) Wijk aan Zee 2018}) 15. f3 Re8 16. Rab1 f6 17. Bc3 Nd8 18. a4 Rb8 19. a5 Be6 20. a4 a6 21. Rb6 Bf7 22. Rd7 Be6 23. Rc7 Rc8 24. Rxc8 Bxc8 25. Bd5+ Be6 26. Bxb7 Nxb7 27. Rxb7 Ra8 28. Kf2 Bf7 29. Rc7 Be8 30. Rxc4 Bd7 31. Rb4 Rc8 32. Bd2 Rc2 33. Ke1 Ra2 34. Rb6 Ra1+ 35. Kf2 Ra2 36. Ke1 Ra1+ 37. Kf2 Ra2 {1/2-1/2 (37) Dominguez Perez,L (2739)-Anand,V (2768) Saint Louis 2018}) 12... Nd5 { Aimed at not just blocking the h1-a8 diagonal, but also stopping Bc3.} 13. Rac1 b5 $1 {Levon is not going to give up his material easily.} 14. Ne4 (14. a4 a6 $11) 14... Bb7 15. Nd6 Bc6 16. Bxd5 $1 {A nice way to break through.} exd5 17. Bc3 {Keeping this attack in hand could have been better.} (17. Nf5 $1 Rfe8 18. Bxg7 {This might not be easy to analyze, but if Black does nothing, he is in big trouble. The idea is to just pull back the bishop to c3 and lift the rook to d4 and eventually switching to the kingside.} Rxe2 $6 (18... Bd7 19. Rxd5 Bxf5 20. Bc3 Bg6 21. Bxa5 Rxe2 22. Rxb5 Rc8 {This should be relatively even, but White is on the better side of equality.} 23. Bc3 $14) 19. Bc3 $1 Nb7 20. Rd4 {The rook bishop and the knight form a potent trio.}) 17... Nb7 18. Nf5 Rfe8 19. Nxg7 Rxe2 20. Nf5 Re6 21. Nd4 Nc5 {A very interesting exchange sacrifice.} 22. Bb4 Na4 (22... Nd3 $2 23. Rxd3 cxd3 24. Nxe6 fxe6 25. Rxc6 $18) 23. Nxe6 fxe6 24. Rd4 $1 e5 25. Rg4+ Kf7 (25... Kh8 26. Be7 $18) 26. Rh4 Kg8 $6 (26... d4 {This was what Levon should have played.} 27. Re1 (27. Rxh7+ Kg8 28. Rh4 Bf3 $19) 27... a5 28. Bd6 e4 29. f3 {The game is extremely complex, but somehow it ends in a draw.} d3 30. fxe4 $13) 27. Rg4+ (27. Re1 {White might have some chances here.} e4 28. f3 $1 d4 29. fxe4 $14) 27... Kf7 28. Rh4 Kg8 29. Rg4+ {An interesting theoretical battle.} 1/2-1/2