[Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "6.1"] [White "Zhu, Jiner"] [Black "Mendonca, Leon Luke"] [Result "1/2-1/2"] [ECO "B36"] [WhiteElo "2459"] [BlackElo "2549"] [Annotator "ChessBase"] [PlyCount "78"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,78,25,16,71,60,56,50,34,36,70,22,15,24,45,53,43,22,23,23,12,17,31,32, 36,39,28,24,42,39,40,42,50,45,51,51,50,56,55,55,52,49,45,52,57,55,55,56,52,52, 56,57,66,64,59,53,62,60,62,51,50,51,49,44,49,47,66,40,41,32,41,33,45,33,41,33, 40,33,45,40,39]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00: 00]} Nc6 {[%emt 0:00:07]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:04]} 4. Nxd4 {[%emt 0:00:04]} g6 {[%emt 0:00:12]} 5. c4 {[%emt 0:00:04]} Nf6 {[%emt 0:00:33] } 6. Nc3 {[%emt 0:00:03]} Nxd4 {[%emt 0:00:21]} 7. Qxd4 {[%emt 0:00:04]} d6 { [%emt 0:00:02]} 8. Be3 {[%emt 0:00:10]} Bg7 {[%emt 0:00:04]} 9. f3 {[%emt 0:00: 03]} O-O {[%emt 0:00:10]} 10. Qd2 {[%emt 0:00:02]} Be6 {[%emt 0:00:05]} 11. Be2 {[%emt 0:00:27]} Qa5 {[%emt 0:00:31]} 12. Rc1 {[%emt 0:00:13]} Rfc8 {[%emt 0: 00:45]} 13. b3 {[%emt 0:00:57]} Nd7 {[%emt 0:00:45]} 14. Nd5 {[%emt 0:01:47]} Qxd2+ {[%emt 0:00:05]} 15. Kxd2 {[%emt 0:00:06]} Bxd5 {[%emt 0:00:22]} 16. cxd5 {[%emt 0:00:04]} a6 {[%emt 0:02:52]} 17. Rxc8+ {[%emt 0:00:05]} Rxc8 {[%emt 0: 00:02]} 18. Rc1 {[%emt 0:00:01]} Rxc1 {[%emt 0:00:23]} 19. Kxc1 {[%emt 0:00:03] } Bc3 {[%emt 0:01:02]} 20. a3 {[%emt 0:02:21]} Ba5 {[%emt 0:00:55]} 21. Kc2 { [%emt 0:00:04]} Kg7 {[%emt 0:00:39]} 22. Bd4+ {[%emt 0:01:02]} Kf8 {[%emt 0:00: 15]} 23. b4 {[%emt 0:00:51]} Bb6 {[%emt 0:00:14]} 24. Bc3 {[%emt 0:00:14]} Bg1 {[%emt 0:00:56]} 25. h3 {[%emt 0:00:01]} g5 {[%emt 0:00:21]} 26. a4 {[%emt 0: 00:15]} f6 {[%emt 0:00:12]} 27. Kb3 {[%emt 0:00:45]} Ke8 {[%emt 0:00:03]} 28. Bd2 {[%emt 0:00:39]} Ne5 {[%emt 0:00:07]} 29. b5 {[%emt 0:00:50]} axb5 { [%emt 0:00:05]} 30. Bxb5+ {[%emt 0:00:01]} Kd8 {[%emt 0:00:06]} 31. Kc2 { [%emt 0:00:40]} Ng6 {[%emt 0:00:05]} 32. Kd1 {[%emt 0:00:12]} Nf4 {[%emt 0:00: 05]} 33. Bxf4 {[%emt 0:00:03]} gxf4 {[%emt 0:00:01]} 34. Ke2 {[%emt 0:00:02]} h6 {[%emt 0:00:07]} 35. Kd3 {[%emt 0:00:01]} Bf2 {[%emt 0:00:05]} 36. Ke2 { [%emt 0:00:01]} Bg1 {[%emt 0:00:02]} 37. Kd3 {[%emt 0:00:01]} Bf2 {[%emt 0:00: 01]} 38. Kc4 {[%emt 0:00:02]} Kc7 {[%emt 0:00:03]} 39. Kd3 {[%emt 0:00:01]} Kd8 {[%emt 0:00:03]} 1/2-1/2 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "6.2"] [White "Abdumalik, Zhansaya"] [Black "Keymer, Vincent"] [Result "0-1"] [ECO "B90"] [WhiteElo "2472"] [BlackElo "2591"] [Annotator "Shahid"] [PlyCount "98"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,98,21,19,60,56,97,62,72,37,57,35,69,21,27,-9,28,36,32,13,65,39,41,0,0, 0,-8,3,3,-1,4,7,15,16,14,13,19,25,37,30,-16,-68,-39,-108,-123,-89,-82,-135, -137,-158,-166,-184,-158,-188,-190,-206,-192,-327,-193,-212,-170,-217,-333, -333,-188,-201,-177,-182,-175,-180,-188,-200,-200,-214,-204,-230,-248,-248, -375,-428,-434,-432,-423,-561,-570,-1078,-1122,-1250,-503,-509,-475,-500,-500, -665,-665,-827,-727,-926,-596,-694,-721]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0: 00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0: 00:00]} a6 {[%emt 0:00:00]} 6. h3 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 7. Nde2 {[%emt 0:00:00]} h5 {[%emt 0:00:00]} 8. g3 {[%emt 0:00:01]} Be7 {[%emt 0:00:08] } 9. Bg2 {[%emt 0:00:02]} b5 {[%emt 0:00:08]} 10. Nd5 {[%emt 0:00:02]} Nbd7 { [%emt 0:00:02]} 11. O-O {[%emt 0:00:21]} Nxd5 {[%emt 0:00:26]} 12. Qxd5 { [%emt 0:00:02]} Rb8 {[%emt 0:00:01]} 13. Be3 {[%emt 0:00:12]} h4 {[%emt 0:00: 49]} 14. g4 {[%emt 0:00:09]} Bb7 {[%emt 0:00:04]} 15. Qd2 {[%emt 0:00:06]} O-O {[%emt 0:00:57]} 16. Nc3 {[%emt 0:01:02]} Rc8 {[%emt 0:00:11]} 17. Rac1 { [%emt 0:01:49]} Re8 {[%emt 0:01:40]} 18. Nd5 {[%emt 0:00:47]} Bxd5 {[%emt 0:00: 20]} 19. Qxd5 {[%emt 0:00:17]} Nb6 {[%emt 0:00:00]} 20. Qb7 $2 {[%emt 0:00:35]} (20. Bxb6 Qxb6 21. c3) 20... Nc4 {[%emt 0:00:04]} 21. Qxa6 {[%emt 0:00:01]} Qd7 {[%emt 0:00:14]} 22. a4 {[%emt 0:00:26]} bxa4 {[%emt 0:00:05]} 23. b3 {[%emt 0: 01:09]} Nxe3 {[%emt 0:00:41]} 24. fxe3 {[%emt 0:00:00]} Bg5 {[%emt 0:00:03]} 25. Qd3 {[%emt 0:00:15]} Qa7 {[%emt 0:01:19]} 26. Rce1 {[%emt 0:00:04]} a3 { [%emt 0:00:01]} 27. c4 {[%emt 0:00:10]} a2 {[%emt 0:00:09]} 28. Kf2 {[%emt 0: 00:25]} Rb8 {[%emt 0:00:24]} 29. Ra1 {[%emt 0:00:10]} Qa3 {[%emt 0:00:07]} 30. Qc2 {[%emt 0:00:23]} Bxe3+ {[%emt 0:01:41]} 31. Ke2 {[%emt 0:00:18]} Qxb3 { [%emt 0:00:34]} 32. Rxa2 {[%emt 0:00:34]} (32. Qxb3 Rxb3 33. Rxa2 Bd4) 32... Bd4 {[%emt 0:00:08]} 33. Qxb3 {[%emt 0:00:19]} Rxb3 {[%emt 0:00:00]} 34. Rf3 { [%emt 0:00:00]} Rb4 {[%emt 0:00:14]} 35. Rc2 {[%emt 0:00:15]} Ra8 {[%emt 0:00: 11]} 36. Kd2 {[%emt 0:00:22]} Ra1 {[%emt 0:00:31]} 37. Bf1 {[%emt 0:00:10]} Rbb1 {[%emt 0:00:11]} 38. Be2 {[%emt 0:00:03]} Bc5 {[%emt 0:00:06]} 39. Rd3 { [%emt 0:00:23]} Bb4+ {[%emt 0:00:03]} 40. Ke3 {[%emt 0:00:01]} Rh1 {[%emt 0:00: 00]} 41. g5 {[%emt 0:00:43]} Rxh3+ {[%emt 0:00:28]} 42. Kf2 {[%emt 0:00:01]} Rh2+ {[%emt 0:00:04]} 43. Ke3 {[%emt 0:00:12]} Bc5+ {[%emt 0:00:08]} 44. Kd2 { [%emt 0:00:05]} Rg1 {[%emt 0:00:22]} 45. Rb3 {[%emt 0:00:06]} h3 {[%emt 0:00: 12]} 46. Rb8+ {[%emt 0:00:22]} Kh7 {[%emt 0:00:02]} 47. Rb3 {[%emt 0:00:00]} Kg6 {[%emt 0:00:02]} 48. Rf3 {[%emt 0:00:06]} Rxe2+ {[%emt 0:00:09]} 49. Kxe2 { [%emt 0:00:05]} h2 {[%emt 0:00:00]} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "6.3"] [White "Khademalsharieh, Sarasadat"] [Black "Gukesh D"] [Result "0-1"] [ECO "D38"] [WhiteElo "2494"] [BlackElo "2578"] [Annotator "Shahid"] [PlyCount "138"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,138,19,13,9,0,3,9,25,1,-13,-13,7,2,23,19,16,3,21,24,-13,2,14,20,28,24, 12,20,26,17,-16,13,-3,-4,-1,2,19,8,51,17,97,81,87,26,88,100,90,86,79,65,90,74, 73,42,76,79,89,77,103,109,134,122,127,127,131,128,152,180,181,156,167,173,175, 98,109,98,220,189,195,202,357,213,212,220,354,227,245,249,261,259,249,253,255, 262,248,231,234,200,200,200,171,186,150,115,202,115,110,119,140,133,136,77,129, 76,69,88,63,-356,-34,-356,-357,-365,-365,-369,-364,-405,-387,-463,-455,-462, -463,-463,-484,-485,-354,-515,-576,-699,-543,-586,-535]} 1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0: 00:00]} Bb4 {[%emt 0:00:13]} 4. cxd5 {[%emt 0:00:20]} exd5 {[%emt 0:00:04]} 5. Nf3 {[%emt 0:00:02]} Nf6 {[%emt 0:00:25]} 6. Bg5 {[%emt 0:00:31]} Nbd7 { [%emt 0:00:37]} 7. Qb3 {[%emt 0:00:48]} c5 {[%emt 0:00:59]} 8. dxc5 {[%emt 0: 00:33]} Qa5 {[%emt 0:00:52]} 9. a3 {[%emt 0:01:38]} Bxc3+ {[%emt 0:00:13]} 10. bxc3 {[%emt 0:01:04]} Ne4 {[%emt 0:00:54]} 11. Qb4 {[%emt 0:00:39]} Qxc5 { [%emt 0:00:40]} 12. Be3 {[%emt 0:00:02]} Qc7 {[%emt 0:01:02]} 13. Bd4 {[%emt 0: 00:01]} a5 {[%emt 0:00:21]} 14. Qb2 {[%emt 0:00:16]} O-O {[%emt 0:00:03]} 15. e3 {[%emt 0:00:06]} Ndc5 {[%emt 0:00:01]} 16. Bb5 {[%emt 0:01:38]} Bg4 { [%emt 0:01:44]} 17. Ne5 {[%emt 0:00:22]} Bh5 {[%emt 0:00:08]} 18. O-O {[%emt 0: 00:05]} a4 {[%emt 0:01:01]} 19. f3 {[%emt 0:00:18]} Nf6 {[%emt 0:00:09]} (19... Nd6) 20. Nd3 {[%emt 0:00:16]} (20. Qb4 Rfc8 21. Ra2) 20... Nb3 {[%emt 0:00:45]} 21. Rae1 {[%emt 0:01:24]} Nxd4 {[%emt 0:00:44]} 22. cxd4 {[%emt 0:00:02]} Rfc8 {[%emt 0:00:22]} 23. Rc1 {[%emt 0:00:08]} Qe7 {[%emt 0:00:01]} 24. Rfe1 { [%emt 0:00:22]} Rxc1 {[%emt 0:00:07]} 25. Qxc1 {[%emt 0:00:01]} Bg6 {[%emt 0: 00:09]} 26. Nc5 {[%emt 0:00:08]} Ne8 {[%emt 0:00:11]} 27. Bxe8 {[%emt 0:00:08]} Rxe8 {[%emt 0:00:10]} 28. Qb2 {[%emt 0:00:02]} Qg5 {[%emt 0:00:09]} 29. Qxb7 { [%emt 0:00:15]} h5 {[%emt 0:00:01]} 30. f4 {[%emt 0:00:05]} Qh4 {[%emt 0:00:04] } 31. g3 {[%emt 0:00:15]} Qd8 {[%emt 0:00:01]} 32. Qc6 {[%emt 0:00:25]} Re7 { [%emt 0:00:09]} (32... Bc2) 33. Qxa4 {[%emt 0:00:03]} h4 {[%emt 0:00:06]} 34. Qd1 {[%emt 0:00:04]} Qa5 {[%emt 0:00:05]} 35. a4 {[%emt 0:00:03]} Bh5 {[%emt 0: 00:03]} 36. Qb1 $6 {[%emt 0:00:06]} (36. Qc1) 36... Qd2 {[%emt 0:00:09]} 37. Qc1 {[%emt 0:00:06]} Qa5 {[%emt 0:00:08]} 38. Rf1 {[%emt 0:00:09]} (38. gxh4) 38... h3 {[%emt 0:00:02]} 39. Qe1 {[%emt 0:00:04]} Qa8 {[%emt 0:00:11]} 40. Qf2 {[%emt 0:00:07]} Qa5 {[%emt 0:00:03]} 41. Qe1 {[%emt 0:00:15]} Qa8 {[%emt 0:00: 02]} 42. Qd2 {[%emt 0:00:01]} Qe8 {[%emt 0:00:05]} 43. Re1 {[%emt 0:00:02]} Ra7 {[%emt 0:00:10]} 44. a5 {[%emt 0:00:03]} Qb5 {[%emt 0:00:04]} 45. a6 {[%emt 0: 00:01]} Bg6 {[%emt 0:00:00]} 46. Qe2 {[%emt 0:00:06]} Qa5 {[%emt 0:00:03]} 47. Rf1 {[%emt 0:00:07]} Bf5 {[%emt 0:00:06]} 48. Qf3 {[%emt 0:00:10]} Qd2 { [%emt 0:00:04]} 49. g4 {[%emt 0:00:10]} Bc8 {[%emt 0:00:13]} 50. Qf2 {[%emt 0: 00:15]} Qc3 {[%emt 0:00:03]} 51. Qe1 {[%emt 0:00:06]} Qa3 {[%emt 0:00:07]} 52. Qg3 {[%emt 0:00:05]} Bxa6 {[%emt 0:00:02]} 53. Nxa6 {[%emt 0:00:01]} Qxa6 { [%emt 0:00:03]} 54. Qxh3 {[%emt 0:00:01]} Qd3 {[%emt 0:00:02]} 55. Qf3 { [%emt 0:00:12]} (55. Re1 Ra2) 55... Ra2 {[%emt 0:00:05]} 56. Rf2 {[%emt 0:00: 03]} Ra1+ {[%emt 0:00:02]} 57. Kg2 {[%emt 0:00:01]} Re1 {[%emt 0:00:04]} 58. e4 $4 {[%emt 0:00:20]} (58. Qxd5 Rxe3) 58... Qxd4 {[%emt 0:00:02]} (58... Re3) 59. exd5 {[%emt 0:00:03]} Re3 {[%emt 0:00:01]} 60. d6 {[%emt 0:00:11]} Rxf3 { [%emt 0:00:01]} 61. Rxf3 {[%emt 0:00:00]} Qxd6 {[%emt 0:00:01]} 62. h4 { [%emt 0:00:01]} Qd2+ {[%emt 0:00:03]} 63. Kg3 {[%emt 0:00:01]} Qe1+ {[%emt 0: 00:00]} 64. Kh3 {[%emt 0:00:03]} Qh1+ {[%emt 0:00:02]} 65. Kg3 {[%emt 0:00:00]} Qg1+ {[%emt 0:00:00]} 66. Kh3 {[%emt 0:00:01]} Kh7 {[%emt 0:00:02]} 67. h5 { [%emt 0:00:01]} Kh6 {[%emt 0:00:03]} 68. Ra3 {[%emt 0:00:24]} Qf2 {[%emt 0:00: 06]} 69. Ra6+ {[%emt 0:00:21]} f6 {[%emt 0:00:02]} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "6.4"] [White "Abdusattorov, Nodirbek"] [Black "Bjerre, Jonas Buhl"] [Result "1-0"] [ECO "B92"] [WhiteElo "2627"] [BlackElo "2550"] [Annotator "TA"] [PlyCount "149"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,149,15,16,15,25,17,9,0,0,0,0,0,0,-7,3,-6,-8,-14,0,0,0,-26,18,37,25, 16,15,16,29,0,19,0,95,79,114,105,125,113,237,233,225,75,157,158,166,85,88,87, 88,66,73,75,74,71,72,64,71,73,74,65,59,63,78,14,14,8,228,9,19,8,8,0,29,34,44, 14,22,14,20,20,38,38,42,42,42,42,30,30,30,-14,179,84,59,45,445,445,376,284,284, 268,268,267,437,444,444,444,444,444,900,889,868,842,836,811,720,734,1534,1675, 1668,1476,29968,29970,29966,6385,4134,3369,29972,29973,29973,29973,29973,29971, 29972,29972]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Bg5 Be6 9. Bxf6 Bxf6 10. Qd3 {B92: Sicilian Najdorf: 6 Be2.} Be7 11. O-O-O Nd7 12. Nd5 {The position is equal.} Bxd5 13. Qxd5 Qc7 14. Kb1 O-O 15. Nd2 Nf6 16. Qd3 Rfd8 17. Bf3 Rac8 {[#]} 18. c3 $146 ({Predecessor:} 18. Rhe1 Qb6 19. Re2 Rc5 20. Nc4 Qb4 21. Ne3 g6 22. h4 h5 23. g3 Qa4 24. Bg2 Ra5 25. Qb3 Qc6 26. Qc4 Rb5 27. f4 exf4 28. gxf4 Ng4 29. Rh1 {1/2-1/2 (29) Efroimski,M (2255)-Ushenina,A (2426) Skopje 2015}) 18... b5 19. Rhe1 a5 20. Qxb5 Rb8 21. Qa4 Qxc3 {[%csl Gb8][%CAl Rc3b2]} 22. Nb3 Qc7 23. Rc1 Qb6 24. Re2 d5 $2 (24... Ra8 $11 {keeps the balance.}) 25. exd5 $1 $16 {[%mdl 64] Discovered Attack} e4 ({Not} 25... Nxd5 $2 26. Rxe5 Qg6+ 27. Be4 $18) 26. Bxe4 Nxe4 27. Qxe4 ({ Don't play} 27. Rxe4 Qg6 $14) 27... Bf6 (27... Bf8 $16) 28. Rc6 $18 Qb5 29. Qc4 (29. Nc5 $18) 29... Rxd5 (29... Qxc4 $142 30. Rxc4 Rxd5) 30. Qxb5 $16 Rdxb5 { [#]} 31. Rc5 ({White should try} 31. Ra6 $1 $18) 31... h5 32. Rxb5 Rxb5 { [%mdl 4096] Endgame KRB-KRN} 33. Re4 h4 34. Kc2 Rf5 35. f4 g5 36. fxg5 Rxg5 37. Re2 a4 38. Nd2 Rc5+ 39. Kb1 Bg5 40. a3 (40. b4 $16 axb3 41. axb3) 40... f5 $1 $11 41. Nf3 Rc1+ 42. Ka2 Bf6 43. h3 Kg7 44. Ne1 (44. Ne5 {keeps more tension.} Rd1 45. Nc4 f4 46. Rf2 Rg1 47. Nd2) 44... Kg6 (44... Rd1 {feels hotter.} 45. Nc2 Rd3 46. Nb4 Rd1 47. Na6 Rc1) 45. Nd3 Rc4 46. Kb1 Rd4 47. Kc2 Rc4+ 48. Kd2 Rd4 49. Re6 Kf7 50. Rb6 Bg5+ 51. Ke2 Re4+ 52. Kf1 Bf6 53. Rb4 Re3 $2 {[#]} ( 53... Rxb4 $11 {and Black stays safe.} 54. Nxb4 (54. axb4 Bxb2 55. b5 a3 $17) 54... Bxb2) 54. Nf4 (54. Nc5 $1 $18 {and White stays clearly on top.}) 54... Be5 55. Kf2 Bxf4 {[%mdl 8192] White stays focused until the end.} (55... Re4 $14 56. Rb7+ Kf6 57. Rb6+ Kf7 58. Rb7+ Kf6) 56. Rxf4 $14 {[%mdl 64] Double Attack. KR-KR} Rb3 57. Rxf5+ Kg6 58. Rf4 Rxb2+ 59. Kg1 Kh5 $2 (59... Rb1+ 60. Kh2 Ra1 61. Rxa4 Kf5 62. Rxh4 Rxa3) 60. Rxa4 $18 Ra2 61. Ra8 Kg5 62. a4 { [%CAl Ba3a4,Ba4a5][%mdl 32]} Kg6 (62... Kf5 $142 63. a5 Kf6) 63. Rg8+ Kh5 64. Rg4 Rb2 65. Kf1 Rd2 66. Ke1 Rd8 67. a5 Re8+ 68. Kf2 Rf8+ 69. Ke3 Re8+ 70. Kf3 ( 70. Re4 $142 Ra8 71. Ra4 Kg5 72. a6 Kf6 73. Kd4 Ke7 74. Kc5 Kd7 75. a7) 70... Rf8+ 71. Rf4 Rg8 72. Ra4 {White mates.} Rf8+ 73. Ke4 Kg5 74. Ke5 Rf1 75. a6 { Weighted Error Value: White=0.16/Black=0.36} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "6.5"] [White "Murzin, Volodar"] [Black "Shuvalova, Polina"] [Result "1-0"] [ECO "C77"] [WhiteElo "2478"] [BlackElo "2476"] [Annotator "TA"] [PlyCount "175"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,175,16,8,20,-11,-11,-10,-10,-21,-12,-14,-18,-41,-28,-40,-31,-41,-31, -12,-35,-32,-38,-41,-28,-112,0,-83,45,-60,-60,-60,-60,-56,-54,-69,-74,-102, -103,-212,-48,-135,-29,-60,-4,-108,0,0,0,-65,-45,-41,-7,-6,-8,-7,0,-105,-87, -104,-8,-8,-10,0,37,0,0,0,0,0,0,0,0,-29,-11,-11,16,16,16,2,16,0,16,0,33,41,116, 0,77,77,77,77,77,0,77,77,77,76,77,77,77,77,77,77,77,77,77,43,43,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,7,8,8,8,0,8,0,29971,29975,29981,29982,29982, 29983,29983,29980,29984,29985,29985,29986,29986,29981,29981,29982,29982,29983, 29983,29984,29988,29983,29986,29986]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. O-O Bg7 8. Nbd2 O-O 9. Re1 Re8 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines.} 10. d4 b5 11. Bc2 exd4 {The position is equal.} 12. cxd4 Nb4 13. Bb1 c5 14. d5 {[#] next a3 is good for White.} a5 $146 ({ Predecessor:} 14... c4 15. a3 Nd3 16. Bxd3 cxd3 17. Qb3 Ra7 18. Qxd3 Rae7 19. a4 Bd7 20. h3 bxa4 21. Qxa6 {0-1 (45) Wang,Y (2117)-Repka,C (2491) chess24.com INT 2021}) 15. a3 Na6 16. a4 Bd7 17. axb5 Bxb5 18. Ra3 Nb4 19. Nf1 a4 20. Bf4 { [#]} (20. Bg5 $11 {keeps the balance.}) 20... Qb6 (20... Nxe4 $1 $17 {[%mdl 512]} 21. Bxe4 Bxb2) 21. Qc1 (21. Ng3 $11) 21... Nd7 (21... Bxf1 $17 22. Kxf1 Nh5) 22. Ne3 (22. Bh6 $14) 22... c4 $1 $15 23. Ng4 Nd3 24. Bxd3 cxd3 25. Nh6+ Kf8 $1 26. Be3 {[#]} Rac8 $1 {[%mdl 512]} 27. Qd2 {[#]} (27. Bxb6 $2 Rxc1 28. Rxc1 Nxb6 $19) (27. Rc3 $17 {only move.} Rxc3 28. bxc3) (27. Rc3 Rxc3) 27... Nc5 $2 (27... Rc2 $1 $19 {[%CAl Rc2d2][%mdl 512]} 28. Bxb6 Rxd2 29. Nxd2 Nxb6) 28. Qb4 (28. e5 $1 $15) 28... Na6 29. Qd2 $11 (29. Bxb6 $2 Nxb4 30. Ba5 Nc2 $19 ) 29... Qc7 (29... Qb7 $15 30. Bd4 Qe7) 30. Nd4 (30. Bg5 $11) 30... Qb7 ({ Black should play} 30... Bxd4 $17 31. Bxd4 Rxe4) 31. f3 Nc5 32. Ng4 (32. Nxb5 $2 Qxb5 33. Bg5 Qxb2 $19) (32. Nhf5 $11 gxf5 33. Nxf5) 32... Bd7 $15 33. Nf2 Rb8 {Threatening ...Qb4.} 34. Nxd3 Nxd3 35. Qxd3 Qxb2 36. h3 (36. Raa1 $11 Rbc8 37. Ra3) 36... Rec8 $17 37. Nc6 Rb3 ({Better is} 37... Bxc6 $17 38. dxc6 Qb4) 38. Rxb3 $11 Qxb3 39. Qa6 Re8 40. Qa7 Bxc6 41. dxc6 a3 42. Bd4 a2 43. Bxg7+ Kxg7 {[%mdl 4096] Endgame KQR-KQR} 44. Kh2 (44. Qd4+ {with more complications.} Kg8 45. Rc1 Rc8 46. c7 Qb1 47. Qa1) 44... Qc3 45. Rd1 Qxc6 {Strongly threatening ...Ra8.} (45... Qb2 {looks sharper.} 46. c7 d5 47. exd5 Re2 48. Rg1 Rc2) 46. Qxa2 Qc5 47. Rd5 Qc3 48. Qf2 Re6 49. h4 h5 50. Qg3 Qf6 ({Black should try} 50... Qa3 $14) 51. Rxd6 Qe7 (51... Rxd6 $11 {remains equal.} 52. e5 { [%mdl 64] Double Attack} Qf5 53. exd6 Qf6) 52. Rd5 {aiming for Rxh5.} Kh7 53. Qf4 Qf6 54. Qg3 (54. Qg5 {feels hotter.} Qc3 55. Rd7 Kg7 56. Re7 Rf6 57. Re8) 54... Qe7 $1 55. Rg5 Qf6 56. Qb8 Qe7 57. Qf4 Qf6 58. Kg3 Qxf4+ 59. Kxf4 $16 { KR-KR} Ra6 60. Rd5 Ra2 61. g4 hxg4 62. fxg4 Rf2+ 63. Kg3 (63. Kg5 f6#) 63... Re2 64. Kf3 Re1 65. h5 gxh5 66. gxh5 Kh6 67. Rf5 Rf1+ 68. Kg4 Re1 69. Kf4 Kg7 70. Ke5 Rh1 71. Rg5+ Kf8 $1 72. Kf6 Rf1+ 73. Rf5 Rh1 74. Ra5 {[%CAl Ra5a8]} Rf1+ 75. Rf5 (75. Ke5 {is more complex.} Kg7 76. Ra6 f6+ 77. Kd4 Rd1+ 78. Ke3) 75... Rh1 76. e5 (76. Rd5 {keeps more tension.} Rf1+ 77. Kg5 Re1 78. Kf4 Kg7 79. Ke5) 76... Kg8 $2 {[%mdl 8192]} (76... Rh2 $11) (76... Rg1) 77. Ke7 { White mates.} Rg1 78. Rxf7 Rg5 79. e6 Rxh5 80. Rf1 Ra5 81. Rg1+ Kh7 82. Kf6 Ra2 83. e7 Rf2+ 84. Ke6 Re2+ 85. Kf7 Rf2+ {[#]} 86. Ke8 $1 Kh6 87. Rd1 Kg7 88. Kd8 {Weighted Error Value: White=0.30/ Black=0.26} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "6.6"] [White "Mammadzada, Gunay"] [Black "Yoo, Christopher Woojin"] [Result "1/2-1/2"] [ECO "B33"] [WhiteElo "2443"] [BlackElo "2455"] [Annotator "ChessBase"] [PlyCount "124"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,76,19,31,40,41,41,32,50,22,24,47,53,-4,79,72,90,85,67,84,42,45,58,58, 106,87,87,48,63,5,5,23,13,23,33,30,23,20,5,23,7,11,4,-6,27,-20,-6,-4,-7,-28, -20,-26,-9,-7,-27,-111,-1,-32,-40,-40,5,-26,-5,-32,-25,-36,-20,-17,-51,-48,-37, -56,10,23,-19,-7,26,19,32]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 { [%emt 0:00:06]} e6 {[%emt 0:00:01]} 3. d4 {[%emt 0:00:02]} cxd4 {[%emt 0:00:01] } 4. Nxd4 {[%emt 0:00:02]} Nf6 {[%emt 0:00:02]} 5. Nc3 {[%emt 0:00:02]} Qb6 { [%emt 0:00:06]} 6. a3 {[%emt 0:03:59]} Nc6 {[%emt 0:01:36]} 7. Nb3 {[%emt 0:00: 29]} Qc7 {[%emt 0:00:55]} 8. Be3 {[%emt 0:00:24]} Be7 {[%emt 0:01:19]} 9. Be2 { [%emt 0:01:36]} O-O {[%emt 0:00:06]} 10. O-O {[%emt 0:00:01]} a6 {[%emt 0:01: 26]} 11. f4 {[%emt 0:00:06]} b5 {[%emt 0:00:28]} 12. e5 {[%emt 0:00:37]} Ne8 { [%emt 0:00:02]} 13. Bd3 {[%emt 0:00:17]} d6 {[%emt 0:00:58]} 14. Be4 {[%emt 0: 01:21]} Bb7 {[%emt 0:00:41]} 15. Qh5 {[%emt 0:01:36]} g6 {[%emt 0:01:24]} 16. Qe2 {[%emt 0:00:02]} Ng7 {[%emt 0:00:27]} 17. exd6 {[%emt 0:00:08]} Bxd6 { [%emt 0:00:02]} 18. Nc5 {[%emt 0:00:11]} Nd4 {[%emt 0:00:55]} 19. Bxd4 { [%emt 0:00:10]} Bxc5 {[%emt 0:00:02]} 20. Bxc5 {[%emt 0:00:03]} Qxc5+ {[%emt 0: 00:00]} 21. Kh1 {[%emt 0:00:01]} Bd5 {[%emt 0:00:16]} 22. Nxd5 {[%emt 0:00:13]} exd5 {[%emt 0:00:00]} 23. Bd3 {[%emt 0:00:01]} Rfe8 {[%emt 0:00:07]} 24. Qg4 { [%emt 0:00:05]} f5 {[%emt 0:00:12]} 25. Qf3 {[%emt 0:00:03]} Re3 {[%emt 0:00: 06]} 26. Qf2 {[%emt 0:00:01]} d4 {[%emt 0:00:05]} 27. b4 {[%emt 0:00:10]} Qd6 { [%emt 0:00:12]} 28. a4 {[%emt 0:00:03]} Rb8 {[%emt 0:00:04]} 29. axb5 {[%emt 0: 00:04]} axb5 {[%emt 0:00:00]} 30. Qd2 {[%emt 0:00:02]} Ne6 {[%emt 0:00:08]} 31. Rae1 {[%emt 0:00:27]} Rxe1 {[%emt 0:00:22]} 32. Qxe1 {[%emt 0:00:00]} Nc7 { [%emt 0:00:09]} 33. Qa1 {[%emt 0:00:10]} Ra8 {[%emt 0:00:09]} 34. Qb2 {[%emt 0: 00:03]} Ra4 {[%emt 0:00:04]} 35. Bxb5 {[%emt 0:00:09]} Qxb4 {[%emt 0:00:08]} 36. Qb3+ {[%emt 0:00:09]} Qxb3 {[%emt 0:00:03]} 37. cxb3 {[%emt 0:00:00]} Ra2 { [%emt 0:00:11]} 38. Bc4+ {[%emt 0:00:00]} Kg7 {[%emt 0:00:02]} 39. Rd1 { [%emt 0:00:12]} Kf6 {[%emt 0:00:14]} 40. Kg1 {[%emt 0:00:02]} Ne6 {[%emt 0:00: 08]} 41. Bxe6 {[%emt 0:00:04]} Kxe6 {[%emt 0:00:00]} 42. Rxd4 {[%emt 0:00:01]} Rb2 {[%emt 0:00:01]} 43. Rb4 {[%emt 0:00:12]} Kf6 {[%emt 0:00:02]} 44. h3 { [%emt 0:00:00]} h5 {[%emt 0:00:05]} 45. Rb6+ {[%emt 0:00:07]} Kg7 {[%emt 0:00: 02]} 46. h4 {[%emt 0:00:03]} Kh7 {[%emt 0:00:03]} 47. Kh2 {[%emt 0:00:01]} Kg7 {[%emt 0:00:04]} 48. Kg3 {[%emt 0:00:01]} Rc2 {[%emt 0:00:06]} 49. Kf3 { [%emt 0:00:10]} Rc3+ {[%emt 0:00:05]} 50. Kf2 {[%emt 0:00:08]} Rc2+ {[%emt 0: 00:01]} 51. Kg3 {[%emt 0:00:01]} Rc3+ {[%emt 0:00:02]} 52. Kh2 {[%emt 0:00:01]} Rc2 {[%emt 0:00:02]} 53. b4 {[%emt 0:00:01]} Rc4 {[%emt 0:00:07]} 54. Kg3 { [%emt 0:00:10]} Rc3+ {[%emt 0:00:02]} 55. Kf2 {[%emt 0:00:01]} Rc2+ {[%emt 0: 00:01]} 56. Kf3 {[%emt 0:00:06]} Rc3+ {[%emt 0:00:02]} 57. Ke2 {[%emt 0:00:19]} Rc2+ {[%emt 0:00:17]} 58. Kf3 {[%emt 0:00:09]} Rc3+ {[%emt 0:00:01]} 59. Kf2 { [%emt 0:00:03]} Rc2+ {[%emt 0:00:02]} 60. Kg3 {[%emt 0:00:06]} Rc3+ {[%emt 0: 00:01]} 61. Kh2 {[%emt 0:00:01]} Rc4 {[%emt 0:00:01]} 62. Kg3 {[%emt 0:00:10]} Rc3+ {[%emt 0:00:02]} 1/2-1/2 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "6.7"] [White "Nihal Sarin"] [Black "Liang, Awonder"] [Result "1-0"] [ECO "D52"] [WhiteElo "2620"] [BlackElo "2592"] [Annotator "TA"] [PlyCount "45"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,45,23,41,30,33,24,23,28,60,38,44,53,40,54,92,94,176,177,681,677,749, 622,420,375,371,368,331,227,533,434,1787,1720,1539,1484]} 1. Nf3 c6 2. d4 Nf6 3. c4 d5 4. Nc3 e6 5. Bg5 Nbd7 6. e3 Qa5 7. Nd2 Be7 8. cxd5 {D52: Queen's Gambit Declined: Cambridge Springs Variation.} exd5 9. Bd3 Nf8 10. O-O { White has an edge.} Ng6 {[#]} 11. f4 $146 ({Predecessor:} 11. Rb1 O-O 12. Bxf6 Bxf6 13. b4 Qd8 14. b5 c5 15. Ne2 cxd4 16. Nxd4 Bxd4 17. exd4 {1-0 (46) Zwanowetz,T-Kuecher,W Imst 2008}) 11... h6 12. Bxf6 Bxf6 13. Qh5 O-O (13... Nf8 ) 14. Nf3 Ne7 {[#]} (14... Qb4 $16) 15. Ne4 $1 $18 {[%CAl Re4f6][%mdl 576] Pin} Qd8 $2 (15... Be5) 16. Nxf6+ gxf6 17. Qxh6 {[%csl Gd3][%CAl Rh6h7]} Bf5 18. Rad1 {[%CAl Ba1d1,Bd1d3,Bd3g3][%mdl 32] Black must now prevent Nh4.} Bxd3 19. Rxd3 {[#] Strongly threatening Nh4.} Nf5 20. Qh3 Ng7 (20... Qc8 {is a better chance.} 21. Qg4+ Kh7 22. Qh5+ Nh6 23. Ng5+ Kg7) 21. Nh4 {White is clearly winning.} Qe7 (21... Qc8 $142 22. g4 Rd8) 22. e4 {Threatening mate with Rg3!} Qxe4 23. Rg3 {Weighted Error Value: White=0.22/Black=0.80} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "6.8"] [White "Badelka, Olga"] [Black "Saduakassova, Dinara"] [Result "1-0"] [ECO "A39"] [WhiteElo "2433"] [BlackElo "2500"] [Annotator "Shahid"] [PlyCount "79"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,79,19,25,19,-19,7,15,17,-7,18,40,21,26,26,13,18,12,33,22,19,33,33,43, 57,56,59,73,72,39,40,40,40,26,23,36,37,18,29,27,35,35,29,18,32,31,65,68,61,50, 69,13,64,25,111,98,114,105,110,107,167,160,149,117,135,56,73,45,45,44,119,134, 135,143,529,566,431,514,568,735,869,1003]} 1. Nf3 {[%emt 0:00:00]} Nf6 { [%emt 0:00:00]} 2. g3 {[%emt 0:00:00]} c5 {[%emt 0:00:15]} 3. Bg2 {[%emt 0:00: 08]} Nc6 {[%emt 0:00:03]} 4. O-O {[%emt 0:00:18]} g6 {[%emt 0:02:22]} 5. d4 { [%emt 0:00:23]} cxd4 {[%emt 0:02:46]} 6. Nxd4 {[%emt 0:05:05]} Bg7 {[%emt 0:00: 04]} 7. c4 {[%emt 0:00:02]} O-O {[%emt 0:00:36]} 8. Nc3 {[%emt 0:00:04]} Nxd4 { [%emt 0:00:59]} 9. Qxd4 {[%emt 0:00:02]} d6 {[%emt 0:00:00]} 10. Qd2 {[%emt 0: 00:15]} Qc7 {[%emt 0:00:18]} 11. b3 {[%emt 0:00:04]} Bd7 {[%emt 0:00:03]} 12. Bb2 {[%emt 0:00:02]} Bc6 {[%emt 0:00:01]} 13. Nd5 {[%emt 0:00:13]} Bxd5 { [%emt 0:00:10]} 14. cxd5 {[%emt 0:00:02]} Rac8 {[%emt 0:00:30]} 15. Rac1 { [%emt 0:00:03]} Qb6 {[%emt 0:00:28]} 16. e3 {[%emt 0:00:56]} Nd7 {[%emt 0:00: 17]} 17. Bxg7 {[%emt 0:00:19]} Kxg7 {[%emt 0:00:03]} 18. h4 {[%emt 0:00:01]} Nf6 {[%emt 0:00:06]} 19. Rc2 {[%emt 0:00:16]} Rxc2 {[%emt 0:00:05]} 20. Qxc2 { [%emt 0:00:01]} Qc5 {[%emt 0:00:03]} 21. Qxc5 {[%emt 0:00:14]} dxc5 {[%emt 0: 00:00]} 22. e4 {[%emt 0:00:01]} Nd7 {[%emt 0:00:04]} 23. f4 {[%emt 0:00:06]} Rd8 {[%emt 0:01:14]} 24. Rc1 {[%emt 0:00:38]} b6 {[%emt 0:00:19]} 25. e5 { [%emt 0:00:07]} h6 {[%emt 0:00:51]} 26. Kf2 {[%emt 0:00:26]} g5 $2 {[%emt 0:00: 03]} (26... f6) 27. Ke3 {[%emt 0:00:07]} a5 {[%emt 0:00:06]} 28. Be4 {[%emt 0: 00:08]} Nf8 {[%emt 0:00:09]} 29. Rh1 {[%emt 0:00:52]} Rd7 {[%emt 0:00:09]} 30. hxg5 {[%emt 0:00:24]} hxg5 {[%emt 0:00:13]} 31. f5 {[%emt 0:00:02]} Ra7 { [%emt 0:00:02]} 32. a4 {[%emt 0:00:04]} Nd7 {[%emt 0:00:04]} 33. e6 {[%emt 0: 00:07]} Nf6 {[%emt 0:00:02]} 34. Rd1 {[%emt 0:00:23]} Ra8 {[%emt 0:00:04]} 35. d6 {[%emt 0:00:03]} Nxe4 {[%emt 0:00:03]} 36. Kxe4 {[%emt 0:00:05]} Kf6 { [%emt 0:00:02]} 37. d7 {[%emt 0:00:13]} Rd8 {[%emt 0:00:02]} 38. exf7 {[%emt 0: 00:01]} Kxf7 {[%emt 0:00:01]} 39. Ke5 {[%emt 0:00:01]} g4 {[%emt 0:00:06]} 40. Rd2 {[%emt 0:00:03]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "6.9"] [White "Lei, Tingjie"] [Black "Salimova, Nurgyul"] [Result "1-0"] [ECO "D10"] [WhiteElo "2505"] [BlackElo "2397"] [Annotator "Shahid"] [PlyCount "69"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,69,19,28,27,3,27,29,32,34,25,20,34,15,33,22,36,34,31,18,14,-7,-7,-4, 22,33,29,34,39,41,36,7,12,5,62,60,97,93,79,84,84,91,65,86,101,85,136,111,90,0, 0,0,0,0,77,120,68,146,120,120,217,134,144,142,301,308,308,313,308,326,326,343] } 1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} c6 { [%emt 0:00:00]} 3. cxd5 {[%emt 0:00:39]} cxd5 {[%emt 0:00:00]} 4. Bf4 {[%emt 0: 00:01]} Nc6 {[%emt 0:01:02]} 5. e3 {[%emt 0:00:03]} Nf6 {[%emt 0:00:08]} 6. Nc3 {[%emt 0:00:03]} a6 {[%emt 0:00:27]} 7. Be2 {[%emt 0:00:56]} e6 {[%emt 0:01:39] } 8. Rc1 {[%emt 0:00:12]} Bd6 {[%emt 0:00:29]} 9. Bxd6 {[%emt 0:00:19]} Qxd6 { [%emt 0:00:01]} 10. f4 {[%emt 0:00:22]} O-O {[%emt 0:00:26]} 11. Nf3 {[%emt 0: 00:04]} Bd7 {[%emt 0:00:35]} 12. Ne5 {[%emt 0:00:09]} Rac8 {[%emt 0:00:22]} 13. O-O {[%emt 0:00:05]} Ne7 {[%emt 0:00:15]} 14. Bd3 {[%emt 0:01:37]} b5 {[%emt 0: 00:18]} 15. Qe2 {[%emt 0:01:33]} b4 {[%emt 0:00:27]} 16. Nb1 {[%emt 0:00:03]} a5 {[%emt 0:00:10]} 17. Nd2 {[%emt 0:00:02]} a4 {[%emt 0:00:34]} 18. g4 { [%emt 0:00:22]} g6 {[%emt 0:00:41]} 19. g5 {[%emt 0:00:56]} Nh5 {[%emt 0:00:11] } 20. Ndf3 {[%emt 0:00:08]} Nf5 {[%emt 0:00:41]} 21. Nxd7 {[%emt 0:00:46]} (21. Rc5 f6 22. gxf6 Nxf6 23. Rfc1) 21... Qxd7 {[%emt 0:00:14]} 22. Ne5 {[%emt 0:00: 04]} Qa7 {[%emt 0:00:30]} 23. Bxf5 {[%emt 0:00:08]} exf5 {[%emt 0:00:04]} 24. Qb5 {[%emt 0:00:02]} Rxc1 {[%emt 0:00:16]} 25. Rxc1 {[%emt 0:00:02]} Nxf4 { [%emt 0:00:07]} 26. Nc6 {[%emt 0:01:26]} Nh3+ {[%emt 0:01:12]} 27. Kg2 { [%emt 0:00:56]} Qd7 {[%emt 0:00:07]} 28. Kxh3 {[%emt 0:00:15]} f4+ {[%emt 0:00: 01]} (28... Re8) 29. Kh4 {[%emt 0:00:02]} h5 {[%emt 0:00:18]} 30. h3 {[%emt 0: 00:33]} Re8 {[%emt 0:00:18]} 31. Na7 {[%emt 0:00:03]} Qe6 {[%emt 0:00:31]} 32. Qxe8+ {[%emt 0:00:02]} Qxe8 {[%emt 0:00:01]} 33. Rc8 {[%emt 0:00:01]} Qxc8 { [%emt 0:00:03]} 34. Nxc8 {[%emt 0:00:01]} fxe3 {[%emt 0:00:36]} 35. Kg3 { [%emt 0:00:03]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "6.10"] [White "Yip, Carissa"] [Black "Praggnanandhaa R"] [Result "0-1"] [ECO "B67"] [WhiteElo "2430"] [BlackElo "2608"] [Annotator "TA"] [PlyCount "60"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 19,60,27,20,-16,-5,0,-17,-14,-15,-23,-18,-18,-10,-42,-41,-42,-37,-49, -49,-25,-26,-104,-104,-178,-177,-191,-188,-191,-189,-266,-215,-545,-543,-4986, -3531,-3439,-2640,-29988,-29989,-29989,-29990,-29990,-29988]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 b5 {[%CAl Bb7b5,Bb5b4][%mdl 32]} 10. Nxc6 Bxc6 11. f5 {11.Qe1 is becoming the main line. B67: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 Bd7, lines without 9 f4 Be7.} b4 {[#]} 12. Bxf6 $146 ({Predecessor:} 12. Nd5 Nxe4 13. Bxd8 Nxd2 14. Nxb4 Nxf1 15. Rhxf1 Bb5 16. Bc7 Bxf1 17. Rxf1 Be7 18. fxe6 fxe6 {0-1 (43) Jewell,B (1531)-Phillips,G (1812) IECC email 2003}) 12... Qxf6 13. Ne2 { [%CAl Re2d4] The position is equal.} Be7 ({But not} 13... Bxe4 $6 14. fxe6 fxe6 15. Qxb4 $16) 14. Nd4 Bxe4 {Hoping for ...e5.} 15. fxe6 fxe6 {Threatening ... 0-0.} 16. Re1 (16. Bd3 $5 {[%CAl Rd3e4]} Bd5 17. Kb1 $11) 16... Bd5 $36 { [%mdl 2048] White is under pressure.} 17. Bd3 O-O $1 (17... Qxd4 $2 18. Bg6+ $1 {[%mdl 512]} hxg6 19. Qxd4 $18) 18. Kb1 Qf7 19. Rhf1 Bf6 20. g4 Qd7 $17 21. Nb3 {[#]} (21. Qe3 $17) 21... a5 $1 $19 22. g5 Be5 23. Rxf8+ Rxf8 24. Nxa5 (24. Be4 $142) 24... Qa4 25. Nb3 $2 (25. Nc4 {nothing else works.}) 25... Ra8 26. Bxh7+ Kxh7 27. Qd3+ Kg8 28. Qh3 Qxa2+ {[%mdl 64] Double Attack. Black mates.} 29. Kc1 Qxb2+ 30. Kd1 Bxb3 {[%csl Gb3][%CAl Rb2c2] Weighted Error Value: White=0.87/ Black=0.04} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "7.1"] [White "Praggnanandhaa R"] [Black "Zhu, Jiner"] [Result "1-0"] [ECO "C00"] [WhiteElo "2608"] [BlackElo "2459"] [Annotator "TA"] [PlyCount "159"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 21,159,-45,-29,-17,-17,-38,3,14,23,-19,27,5,55,54,61,0,0,-16,-14,-28,0, 10,49,37,51,0,172,166,155,134,162,135,414,408,424,427,405,424,419,415,407,359, 551,550,593,560,549,541,528,452,462,441,29981,29982,29992,706,29981,29982,5831, 431,429,421,328,211,211,195,192,188,188,180,188,188,267,195,195,170,176,131, 195,195,187,100,100,100,100,100,129,100,129,100,129,129,129,129,129,129,129, 129,129,129,129,82,82,82,96,82,82,82,129,82,129,75,129,129,129,129,129,129,132, 61,134,134,139,139,139,108,95,95,29974,29975,29976,29977,29974,29978,29977, 29978,29985,29986,29986,29987]} 1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 4. O-O c5 5. d3 Nc6 6. Nbd2 Be7 7. e4 Qc7 8. Re1 O-O 9. e5 Nd7 10. Qe2 b5 11. Nf1 b4 {Recently 11...Bb7 got a lot of attention.} 12. Bf4 {C00: French: Unusual White 2nd moves.} a5 13. Ne3 Qb6 14. h4 {[#] The position is equal.} Bb7 $146 ({ Predecessor:} 14... Ba6 15. Ng5 Bxg5 16. hxg5 Rae8 17. Ng4 Nd4 18. Qd2 Kh8 19. Kh2 Rc8 20. c3 Nf5 21. Rac1 Rfd8 22. Rh1 Rb8 23. Bf3 Bb7 24. Qe2 {1/2-1/2 (24) Fehling,M (2235)-Kapfer,T Germany 1998}) 15. Qd2 Rfd8 16. h5 a4 (16... Nd4 17. Ng4) 17. h6 g6 $1 18. a3 (18. c4 $14) 18... Nd4 $11 19. Nxd4 cxd4 20. Ng4 bxa3 21. bxa3 Qa5 22. Qc1 Rdc8 23. Bg5 (23. Bd2 $14 Qd8 24. Ra2) 23... Qd8 $2 (23... Bf8 $11 {and Black has nothing to worry.}) (23... Bxg5 $2 24. Qxg5 Rxc2 25. Nf6+ $18) 24. Bxe7 $18 Qxe7 25. Rb1 $36 {[%mdl 2048] Keeping Black busy.} (25. Qb2 Rc7 26. Qxd4) 25... Ba6 26. Rb4 $1 Bxd3 $2 {[%mdl 8192]} (26... Rc3 $16 { is a better defense.}) 27. Rb7 $1 {[%CAl Rb7d7]} Kh8 28. Nf6 Bb5 29. Rxb5 Nxf6 30. exf6 Qxf6 31. Qd2 Rc4 (31... g5 $142 32. Rb6 Rab8) 32. Reb1 Qe5 33. Rb7 Kg8 34. Bf1 Rc3 35. Bd3 Rac8 36. Ra7 Rxa3 (36... R3c7 $18) 37. Qb4 {[%mdl 64] Double Attack} Rac3 38. Qb7 (38. Qe7 $142 Rf8 39. Rb8 $3 {[%mdl 576] Deflection } Qxb8 40. Qf6 $1 {[%mdl 512]} Qe5 41. Qxe5 f6 42. Qxe6+ Kh8 43. Qe7 {[%mdl 64] Double Attack} Rf7 44. Qe8+ {[%mdl 64] Double Attack} Rf8 45. Qxf8#) 38... Rf8 39. Ra8 Qd6 {[#]} 40. Qa7 (40. Qb8 $142 $3 {[%mdl 512] White wants to mate with Qxf8+.} Rb3 41. Rxb3 axb3 42. Qxd6 Rxa8 43. Qe5) 40... Rcc8 41. Rxc8 Rxc8 42. Qxd4 {[%csl Gh6][%CAl Rd4g7]} Qf8 43. Qxa4 Qxh6 44. Qd7 Rf8 45. Qd6 Qd2 46. Kg2 h5 (46... Qc3 $142 47. Qe7 Kg7) 47. Rb7 {Hoping for Bxg6!} Qg5 48. Qb4 Qf6 49. Qb2 Qg5 (49... Qxb2 $16 50. Rxb2 Rc8) 50. Qd4 Rc8 51. Qh4 ({Better is} 51. Ra7 $18) 51... Qxh4 $16 52. gxh4 {[%mdl 4096] Endgame KRB-KR} Kg7 53. Kg3 Kf6 54. f3 Rc5 55. Rd7 Rc8 56. Ra7 Rb8 57. Ra1 Rb4 58. f4 Rb7 59. Kf3 Rb4 60. Ke3 Rb7 61. Kd2 Rb4 {[#]} 62. Rf1 $1 Rb7 63. Kc3 Rc7+ 64. Kd4 Rc8 65. Rb1 Rc7 66. Rb6 ({White should play} 66. Ra1) 66... Rc8 ({Black should try} 66... Ra7) 67. Rb7 Rc6 68. c3 Rc8 69. Bb5 Ra8 70. Kc5 (70. Ke3 $16) 70... Rf8 (70... Ra3 $14) 71. Kd6 Rc8 72. Bc6 Rf8 73. Bd7 Ra8 74. Rc7 Rd8 $2 {[%mdl 8192] [#]} (74... Rb8 $16 75. Bc6 Rd8+ 76. Rd7 Rc8) 75. Rc8 $1 {[%CAl Rc8d8] White mates.} Rxc8 76. Bxc8 Kf5 77. Ke7 Kxf4 78. Kxf7 g5 79. hxg5 Kxg5 80. Kxe6 {Weighted Error Value: White=0.26/Black=0.48} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "7.2"] [White "Salimova, Nurgyul"] [Black "Yip, Carissa"] [Result "1-0"] [ECO "D76"] [WhiteElo "2397"] [BlackElo "2430"] [Annotator "Shahid"] [PlyCount "109"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,109,27,27,27,0,44,8,11,18,17,10,23,31,30,20,7,19,32,20,17,20,25,25,58, 55,43,30,30,52,66,-8,-39,-42,-34,-25,-42,-30,0,-44,48,39,36,54,54,38,33,-6,35, 52,51,74,67,77,61,45,44,22,26,27,16,26,26,30,40,4,30,-2,30,9,12,0,49,20,26,14, 0,-52,55,-54,24,-121,-134,-120,-113,-191,-76,-62,-38,-55,-56,-48,112,90,224, 101,266,197,318,262,339,273,367,382,363,277,277,0,29993,29994,29995,29996]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} g6 {[%emt 0:00: 00]} 3. g3 {[%emt 0:00:02]} Bg7 {[%emt 0:00:14]} 4. Bg2 {[%emt 0:00:03]} d5 { [%emt 0:00:02]} 5. cxd5 {[%emt 0:00:20]} Nxd5 {[%emt 0:00:01]} 6. Nf3 {[%emt 0: 00:05]} Nb6 {[%emt 0:00:04]} 7. O-O {[%emt 0:00:15]} Nc6 {[%emt 0:00:02]} 8. e3 {[%emt 0:00:06]} O-O {[%emt 0:00:02]} 9. Nc3 {[%emt 0:00:14]} Re8 {[%emt 0:00: 11]} 10. Nh4 {[%emt 0:00:19]} e5 {[%emt 0:00:11]} 11. d5 {[%emt 0:00:04]} Nb4 { [%emt 0:00:05]} 12. e4 {[%emt 0:00:49]} c6 {[%emt 0:00:18]} 13. a3 {[%emt 0:00: 38]} Na6 {[%emt 0:00:03]} 14. Be3 {[%emt 0:00:34]} cxd5 {[%emt 0:01:23]} 15. Bxb6 {[%emt 0:01:25]} Qxb6 {[%emt 0:00:03]} 16. Nxd5 {[%emt 0:00:03]} Qxb2 { [%emt 0:00:14]} 17. Qf3 {[%emt 0:01:12]} Qb5 {[%emt 0:01:12]} 18. Rab1 { [%emt 0:00:10]} Qd7 {[%emt 0:00:24]} 19. Rfc1 {[%emt 0:00:25]} b6 {[%emt 0:00: 55]} 20. Bf1 {[%emt 0:00:12]} Bb7 {[%emt 0:02:18]} 21. Bb5 {[%emt 0:01:11]} Qd6 {[%emt 0:00:22]} 22. Bxe8 {[%emt 0:00:14]} Rxe8 {[%emt 0:00:02]} 23. Ng2 { [%emt 0:00:23]} Nc5 {[%emt 0:00:34]} 24. Rd1 {[%emt 0:00:14]} Qb8 {[%emt 0:01: 05]} 25. Nge3 {[%emt 0:00:09]} h5 {[%emt 0:00:14]} 26. Qg2 {[%emt 0:00:12]} Ne6 {[%emt 0:00:05]} 27. f3 {[%emt 0:00:37]} Nd4 {[%emt 0:00:06]} 28. Qf2 {[%emt 0: 00:26]} Ba6 {[%emt 0:00:18]} 29. Rd2 {[%emt 0:00:16]} Qd6 {[%emt 0:00:23]} 30. a4 {[%emt 0:00:10]} Bf8 {[%emt 0:00:47]} 31. Kg2 {[%emt 0:00:10]} Qd8 {[%emt 0: 00:15]} 32. Nb4 {[%emt 0:00:44]} Bb7 {[%emt 0:00:06]} 33. Nbd5 {[%emt 0:00:37]} Bc5 {[%emt 0:00:09]} 34. Qf1 {[%emt 0:00:07]} Kg7 {[%emt 0:00:08]} 35. a5 { [%emt 0:00:09]} f5 {[%emt 0:00:24]} 36. axb6 {[%emt 0:00:11]} axb6 {[%emt 0:00: 01]} 37. Qc4 {[%emt 0:00:08]} Rf8 {[%emt 0:00:17]} 38. Ra1 {[%emt 0:00:02]} f4 {[%emt 0:00:02]} 39. Ra7 {[%emt 0:00:06]} Rf7 {[%emt 0:00:03]} 40. Rxb7 $2 { [%emt 0:00:11]} Rxb7 {[%emt 0:00:02]} 41. Nf1 {[%emt 0:00:01]} Rf7 {[%emt 0:00: 05]} 42. Rd3 {[%emt 0:00:06]} Qf8 {[%emt 0:00:04]} 43. gxf4 {[%emt 0:00:01]} Qd8 {[%emt 0:00:08]} 44. fxe5 {[%emt 0:00:05]} Qg5+ {[%emt 0:00:01]} 45. Ng3 { [%emt 0:00:01]} h4 {[%emt 0:00:05]} (45... Ne6) 46. f4 {[%emt 0:00:01]} Qg4 { [%emt 0:00:01]} 47. h3 {[%emt 0:00:01]} Qc8 {[%emt 0:00:03]} 48. Rxd4 {[%emt 0: 00:05]} hxg3 {[%emt 0:00:03]} 49. Rd3 {[%emt 0:00:08]} Qa8 {[%emt 0:00:20]} 50. e6 {[%emt 0:00:07]} Ra7 {[%emt 0:00:06]} 51. Qc3+ {[%emt 0:00:08]} Kh6 { [%emt 0:00:01]} 52. Rd2 {[%emt 0:00:08]} Ra1 {[%emt 0:00:03]} 53. Ne3 {[%emt 0: 00:07]} Ra3 {[%emt 0:00:02]} 54. Ng4+ {[%emt 0:00:01]} Kh7 {[%emt 0:00:08]} 55. Rd7+ {[%emt 0:00:06]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "7.3"] [White "Saduakassova, Dinara"] [Black "Lei, Tingjie"] [Result "0-1"] [ECO "E05"] [WhiteElo "2500"] [BlackElo "2505"] [Annotator "ChessBase"] [PlyCount "114"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,59,24,24,24,6,6,6,6,-16,8,8,5,5,-23,9,5,-13,34,27,27,43,16,9,9,9,1,20, 18,22,54,64,62,62,77,76,81,77,83,83,92,75,108,107,116,116,116,119,117,117,116, 114,110,110,134,126,124,128,133,117,131,129]} 1. d4 {[%emt 0:00:00]} Nf6 { [%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00: 04]} d5 {[%emt 0:00:00]} 4. g3 {[%emt 0:00:01]} Be7 {[%emt 0:00:00]} 5. Bg2 { [%emt 0:00:02]} O-O {[%emt 0:00:01]} 6. O-O {[%emt 0:00:01]} dxc4 {[%emt 0:00: 02]} 7. Qc2 {[%emt 0:00:04]} a6 {[%emt 0:00:01]} 8. a4 {[%emt 0:00:01]} c5 { [%emt 0:00:02]} 9. dxc5 {[%emt 0:00:07]} Bxc5 {[%emt 0:00:02]} 10. Nbd2 { [%emt 0:00:15]} b5 {[%emt 0:01:50]} 11. axb5 {[%emt 0:00:09]} Bb7 {[%emt 0:00: 03]} 12. Nxc4 {[%emt 0:00:51]} axb5 {[%emt 0:00:13]} 13. Rxa8 {[%emt 0:00:02]} Bxa8 {[%emt 0:00:02]} 14. Nce5 {[%emt 0:00:23]} Qc7 {[%emt 0:03:17]} 15. Be3 { [%emt 0:00:20]} Na6 {[%emt 0:00:13]} 16. Bxc5 {[%emt 0:00:25]} Qxc5 {[%emt 0: 00:03]} 17. Qxc5 {[%emt 0:00:09]} Nxc5 {[%emt 0:00:02]} 18. Nd4 {[%emt 0:00:08] } Bxg2 {[%emt 0:01:14]} 19. Kxg2 {[%emt 0:00:03]} Rd8 {[%emt 0:01:57]} 20. Nxb5 {[%emt 0:01:07]} Rb8 {[%emt 0:00:23]} 21. Nd6 {[%emt 0:01:22]} Rxb2 {[%emt 0: 00:20]} 22. Rc1 {[%emt 0:01:04]} Nfd7 {[%emt 0:00:23]} 23. Nxd7 {[%emt 0:00:55] } Nxd7 {[%emt 0:00:03]} 24. Rc7 {[%emt 0:00:12]} Nf8 {[%emt 0:00:04]} 25. e3 { [%emt 0:01:04]} Rd2 {[%emt 0:00:46]} 26. Nxf7 {[%emt 0:00:43]} Rd5 {[%emt 0:00: 14]} 27. f4 {[%emt 0:00:48]} Rd7 {[%emt 0:00:08]} 28. Rxd7 {[%emt 0:00:02]} Nxd7 {[%emt 0:00:01]} 29. Ng5 {[%emt 0:00:01]} Nc5 {[%emt 0:00:02]} 30. Kf3 { [%emt 0:00:02]} h6 {[%emt 0:00:03]} 31. Ne4 {[%emt 0:00:02]} Nd7 {[%emt 0:00: 11]} 32. g4 {[%emt 0:00:01]} Kf7 {[%emt 0:00:03]} 33. Ng3 {[%emt 0:00:03]} Nc5 {[%emt 0:00:06]} 34. h4 {[%emt 0:00:03]} Ke7 {[%emt 0:00:33]} 35. g5 {[%emt 0: 00:10]} hxg5 {[%emt 0:00:22]} 36. fxg5 {[%emt 0:00:02]} Kf7 {[%emt 0:00:06]} 37. Ne4 {[%emt 0:00:04]} Nd3 {[%emt 0:00:02]} 38. h5 {[%emt 0:00:06]} Ne5+ { [%emt 0:00:02]} 39. Kf4 {[%emt 0:00:45]} Nd3+ {[%emt 0:00:01]} 40. Kg3 { [%emt 0:00:01]} Ne5 {[%emt 0:00:01]} 41. Kf4 {[%emt 0:00:07]} Nd3+ {[%emt 0:00: 01]} 42. Kg4 {[%emt 0:00:01]} Ne5+ {[%emt 0:00:01]} 43. Kg3 {[%emt 0:00:02]} Nc4 {[%emt 0:00:04]} 44. Kf4 {[%emt 0:00:07]} Nb6 {[%emt 0:00:14]} 45. Nd6+ { [%emt 0:00:20]} Ke7 {[%emt 0:00:03]} 46. Nb5 {[%emt 0:01:01]} Nd5+ {[%emt 0:00: 16]} 47. Ke4 {[%emt 0:00:04]} Kf7 {[%emt 0:00:00]} 48. Nd6+ {[%emt 0:00:10]} Ke7 {[%emt 0:00:01]} 49. Nc4 {[%emt 0:00:05]} Nb4 {[%emt 0:00:12]} 50. Kf4 { [%emt 0:00:07]} Nc6 {[%emt 0:00:08]} 51. e4 {[%emt 0:00:04]} Nb4 {[%emt 0:00: 04]} 52. Nb6 {[%emt 0:00:02]} Kf7 {[%emt 0:00:03]} 53. Nc8 {[%emt 0:00:06]} Nd3+ {[%emt 0:00:01]} 54. Ke3 {[%emt 0:00:02]} Ne5 {[%emt 0:00:02]} 55. Nd6+ { [%emt 0:00:02]} Ke7 {[%emt 0:00:01]} 56. Nb5 {[%emt 0:00:02]} Kf7 {[%emt 0:00: 04]} 57. Nd4 {[%emt 0:00:41]} Nc4+ {[%emt 0:00:06]} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "7.4"] [White "Liang, Awonder"] [Black "Badelka, Olga"] [Result "1-0"] [ECO "E04"] [WhiteElo "2592"] [BlackElo "2433"] [Annotator "Shahid"] [PlyCount "67"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,67,24,24,24,32,26,12,23,-8,-2,-2,31,-11,12,17,10,-22,-20,-57,0,0,0,0, 0,0,0,0,0,0,53,54,53,61,180,154,177,165,211,195,114,178,292,237,266,231,242, 248,253,253,274,352,395,384,493,514,542,603,622,647,660,542,585,545,585,558, 576,480,575,575]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0: 00:00]} e6 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:00]} d5 {[%emt 0:00:02]} 4. g3 { [%emt 0:00:00]} dxc4 {[%emt 0:00:04]} 5. Bg2 {[%emt 0:00:02]} c6 {[%emt 0:00: 01]} 6. O-O {[%emt 0:00:06]} b5 {[%emt 0:00:05]} 7. a4 {[%emt 0:00:12]} Bb7 { [%emt 0:00:13]} 8. Ng5 {[%emt 0:01:38]} a6 {[%emt 0:00:15]} 9. e4 {[%emt 0:00: 02]} Be7 {[%emt 0:00:20]} 10. e5 {[%emt 0:00:13]} Nd5 {[%emt 0:00:10]} 11. Qh5 {[%emt 0:00:13]} g6 {[%emt 0:01:04]} 12. Qh6 {[%emt 0:00:05]} Bf8 {[%emt 0:00: 11]} 13. Qh3 {[%emt 0:00:04]} Nd7 $2 {[%emt 0:01:22]} (13... Be7) 14. Nc3 { [%emt 0:00:15]} Nxc3 {[%emt 0:02:03]} 15. bxc3 {[%emt 0:00:00]} Be7 {[%emt 0: 00:07]} 16. Ne4 {[%emt 0:01:04]} c5 {[%emt 0:02:37]} 17. Nd6+ {[%emt 0:00:38]} Bxd6 {[%emt 0:00:03]} 18. Bxb7 {[%emt 0:00:00]} Rb8 {[%emt 0:00:21]} 19. Bc6 { [%emt 0:00:29]} Be7 {[%emt 0:00:52]} 20. axb5 {[%emt 0:00:19]} O-O {[%emt 0:00: 14]} 21. bxa6 {[%emt 0:00:02]} Qc7 {[%emt 0:00:20]} 22. Qg2 {[%emt 0:00:11]} Qa7 {[%emt 0:00:12]} 23. Be3 {[%emt 0:00:07]} cxd4 {[%emt 0:00:17]} 24. cxd4 { [%emt 0:00:11]} Nb6 {[%emt 0:00:11]} 25. d5 {[%emt 0:00:37]} exd5 {[%emt 0:00: 02]} 26. Bxd5 {[%emt 0:00:01]} Rfc8 {[%emt 0:00:22]} 27. e6 {[%emt 0:00:23]} f6 {[%emt 0:00:03]} 28. Bb7 {[%emt 0:00:01]} Rc7 {[%emt 0:00:12]} 29. Rfb1 { [%emt 0:00:38]} Bc5 {[%emt 0:00:02]} 30. Bf4 {[%emt 0:00:04]} Rbxb7 {[%emt 0: 00:20]} 31. axb7 {[%emt 0:00:00]} Qxb7 {[%emt 0:00:01]} 32. Qxb7 {[%emt 0:00: 57]} Rxb7 {[%emt 0:00:01]} 33. Rb5 {[%emt 0:00:00]} Bd4 {[%emt 0:00:33]} 34. Rd1 {[%emt 0:00:03]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "7.5"] [White "Yoo, Christopher Woojin"] [Black "Nihal Sarin"] [Result "1/2-1/2"] [ECO "D23"] [WhiteElo "2455"] [BlackElo "2620"] [Annotator "TA"] [PlyCount "101"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,101,7,26,29,29,23,30,21,14,0,1,0,0,0,29,14,20,18,32,0,0,0,0,-31,-29, -28,-26,-39,0,0,0,0,0,0,0,0,0,0,0,0,8,8,8,-10,0,-10,-7,-8,-8,-20,0,-1,0,0,0,0, 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. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 dxc4 5. Qa4+ Nbd7 6. e4 Be7 7. Bxc4 {D23: Queen's Gambit Accepted: 3 Nf3 Nf6 sidelines.} O-O 8. Qc2 c5 $1 {[%CAl Rc5d4]} 9. e5 {White has an edge. is the legacy move (9.dxc5).} Nd5 {[%CAl Rd5b4]} 10. Nxd5 exd5 11. Bd3 h6 12. O-O {[#]} cxd4 $146 ({Predecessor:} 12... c4 13. Bh7+ Kh8 14. Bf5 Nb8 15. Bxc8 Qxc8 16. Be3 Nc6 17. Ne1 Qe6 18. f4 f5 {0-1 (36) Cmilyte,V (2466)-Atalik,E (2374) Dresden 2007}) 13. Bf4 Nc5 14. Nxd4 Bd7 15. Bf5 Rc8 16. Bxd7 Qxd7 17. Qf5 Ne6 18. Rfd1 Rfd8 19. Be3 Nxd4 20. Qxd7 {The position is equal.} Rxd7 21. Bxd4 Bc5 22. Rac1 Rdc7 {[#] ...Bxd4 is the strong threat.} 23. Kf1 Bxd4 24. Rxc7 Rxc7 25. Rxd4 $11 {[%mdl 4096] Endgame KR-KR} Rc2 26. Rxd5 Rxb2 27. Rd7 a5 28. a4 Rb4 29. f3 b6 30. Rb7 Rxa4 {next ...Rb4 is good for Black.} 31. Rxb6 Ra2 32. Ra6 a4 33. Kg1 a3 34. h4 h5 (34... Kf8 { seems wilder.} 35. h5 Ra1+ 36. Kf2 a2 37. Kg3 Ke7) 35. Kh2 Re2 (35... Ra1 { is more complex.} 36. Ra8+ Kh7 37. Kg3 a2 38. Kf4 Kg6) 36. Rxa3 Rxe5 37. Kg3 g6 38. Rd3 Kg7 39. Kf2 Ra5 40. Re3 Ra2+ 41. Kg3 Ra4 42. Rd3 Rc4 43. Ra3 $1 Rb4 44. Re3 Ra4 45. Rc3 Rb4 46. Rc7 Ra4 47. Rd7 Rb4 48. Rc7 Ra4 49. Rb7 Rc4 50. Ra7 Rb4 51. Rc7 {Weighted Error Value: White=0.03/Black=0.04} 1/2-1/2 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "7.6"] [White "Shuvalova, Polina"] [Black "Mammadzada, Gunay"] [Result "1-0"] [ECO "B90"] [WhiteElo "2476"] [BlackElo "2443"] [Annotator "Shahid"] [PlyCount "187"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,187,24,36,63,66,81,63,46,29,30,46,60,36,29,6,0,0,-30,4,1,-26,-31,-13, -16,-26,-27,-28,-21,-23,-23,-25,-15,-23,-26,-26,-23,-20,-18,-15,-17,-15,-14, -15,-8,-15,-15,-14,-13,-18,-11,5,0,-5,-7,1,57,29,115,126,126,126,121,133,110, 110,108,119,134,84,124,49,85,66,86,93,103,94,96,94,94,75,75,107,112,111,111,98, 118,106,104,117,113,123,123,116,189,123,116,117,174,154,140,149,152,149,149, 142,137,136,149,149,165,173,192,195,192,209,215,205,214,211,202,137,153,150, 131,159,144,142,152,140,142,145,142,131,124,100,110,117,118,110,118,118,123, 118,123,115,118,110,126,105,146,129,146,126,116,108,129,125,181,176,173,179, 196,213,213,213,213,213,215,213,213,213,213,211,206,218,218,218,218,218,214, 496,1252,1329,2184,1855,2236,2204]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 { [%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0: 00:02]} a6 {[%emt 0:00:04]} 6. a3 {[%emt 0:00:01]} e5 {[%emt 0:00:30]} 7. Nf5 { [%emt 0:00:04]} Bxf5 {[%emt 0:00:51]} 8. exf5 {[%emt 0:00:03]} d5 {[%emt 0:00: 01]} 9. Bg5 {[%emt 0:00:05]} d4 {[%emt 0:00:02]} 10. Ne4 {[%emt 0:00:43]} Nbd7 {[%emt 0:01:38]} 11. Bd3 {[%emt 0:01:21]} Be7 {[%emt 0:01:14]} 12. Bxf6 { [%emt 0:00:09]} Nxf6 {[%emt 0:00:19]} 13. Nxf6+ {[%emt 0:00:56]} Bxf6 {[%emt 0: 00:04]} 14. O-O {[%emt 0:00:06]} Qb6 {[%emt 0:00:10]} 15. Qf3 {[%emt 0:00:10]} O-O {[%emt 0:00:19]} 16. Be4 {[%emt 0:00:22]} Rac8 {[%emt 0:00:04]} 17. Rab1 { [%emt 0:00:37]} Rc7 {[%emt 0:00:18]} 18. g3 {[%emt 0:00:14]} Rfc8 {[%emt 0:00: 05]} 19. h4 {[%emt 0:00:14]} Be7 {[%emt 0:01:01]} 20. Kg2 {[%emt 0:00:33]} Rb8 {[%emt 0:00:41]} 21. Rh1 {[%emt 0:00:09]} Qh6 {[%emt 0:00:02]} 22. Rbd1 { [%emt 0:00:07]} Qb6 {[%emt 0:01:02]} 23. Rb1 {[%emt 0:01:07]} Qh6 {[%emt 0:00: 04]} 24. Rh3 {[%emt 0:00:10]} b5 {[%emt 0:00:39]} 25. g4 {[%emt 0:00:50]} Qd6 { [%emt 0:01:24]} 26. g5 {[%emt 0:00:09]} f6 {[%emt 0:00:02]} 27. Re1 {[%emt 0: 01:21]} fxg5 {[%emt 0:00:48]} 28. f6 {[%emt 0:00:44]} Qxf6 {[%emt 0:00:27]} 29. Bxh7+ {[%emt 0:00:05]} Kh8 {[%emt 0:00:02]} 30. Qh5 {[%emt 0:01:09]} Qh6 { [%emt 0:00:11]} 31. hxg5 {[%emt 0:00:10]} Qxg5+ {[%emt 0:00:19]} 32. Qxg5 { [%emt 0:00:05]} Bxg5 {[%emt 0:00:00]} 33. Rxe5 {[%emt 0:00:25]} Bh6 {[%emt 0: 00:01]} 34. Bd3 {[%emt 0:00:07]} Rc6 {[%emt 0:00:10]} 35. Rf3 {[%emt 0:00:06]} Kg8 {[%emt 0:00:09]} 36. Re7 {[%emt 0:00:07]} Rf6 {[%emt 0:00:12]} 37. Rxf6 { [%emt 0:00:05]} gxf6 {[%emt 0:00:00]} 38. Re6 {[%emt 0:00:01]} Bc1 {[%emt 0:00: 02]} 39. Rxf6 {[%emt 0:00:17]} Ra8 {[%emt 0:00:12]} 40. b3 {[%emt 0:00:18]} Bxa3 {[%emt 0:00:02]} 41. f4 {[%emt 0:00:03]} Be7 {[%emt 0:00:03]} 42. Rb6 { [%emt 0:00:04]} Kf7 {[%emt 0:00:06]} 43. Kf3 {[%emt 0:00:01]} Bd8 {[%emt 0:00: 04]} 44. Rd6 {[%emt 0:00:06]} Bf6 {[%emt 0:00:03]} 45. Ke4 {[%emt 0:00:01]} Ra7 {[%emt 0:00:04]} 46. Kf5 {[%emt 0:00:04]} Bg7 {[%emt 0:00:04]} 47. Rb6 { [%emt 0:00:03]} Kf8 {[%emt 0:00:04]} 48. Rb8+ {[%emt 0:00:02]} Kf7 {[%emt 0:00: 04]} 49. Be4 {[%emt 0:00:02]} Ke7 {[%emt 0:00:11]} 50. Rb6 {[%emt 0:00:02]} Bf8 {[%emt 0:00:05]} 51. Bb7 {[%emt 0:00:06]} a5 {[%emt 0:00:03]} 52. Rxb5 { [%emt 0:00:04]} a4 {[%emt 0:00:00]} 53. bxa4 {[%emt 0:00:02]} Rxa4 {[%emt 0:00: 04]} 54. Be4 {[%emt 0:00:07]} Ra1 {[%emt 0:00:12]} 55. Rb7+ {[%emt 0:00:03]} Kd8 {[%emt 0:00:06]} 56. Ke5 {[%emt 0:00:13]} Rf1 {[%emt 0:00:13]} 57. f5 { [%emt 0:00:07]} Be7 {[%emt 0:00:04]} 58. Kxd4 {[%emt 0:00:14]} Bf6+ {[%emt 0: 00:04]} 59. Kd5 {[%emt 0:00:01]} Ra1 {[%emt 0:00:02]} 60. Ke6 {[%emt 0:00:09]} Ra6+ {[%emt 0:00:02]} 61. Kf7 {[%emt 0:00:02]} Bc3 {[%emt 0:00:01]} 62. Rb3 { [%emt 0:00:08]} Rf6+ {[%emt 0:00:04]} 63. Kg8 {[%emt 0:00:04]} Be5 {[%emt 0:00: 03]} 64. Rb5 {[%emt 0:00:03]} Bc3 {[%emt 0:00:10]} 65. Rc5 {[%emt 0:00:06]} Ba1 {[%emt 0:00:05]} 66. Ra5 {[%emt 0:00:04]} Bc3 {[%emt 0:00:02]} 67. Ra7 { [%emt 0:00:03]} Ke8 {[%emt 0:00:08]} 68. Rc7 {[%emt 0:00:08]} Be5 {[%emt 0:00: 06]} 69. Rc5 {[%emt 0:00:06]} Bd4 {[%emt 0:00:06]} 70. Rc4 {[%emt 0:00:03]} Be5 {[%emt 0:00:04]} 71. Rc5 {[%emt 0:00:03]} Bd4 {[%emt 0:00:01]} 72. Rd5 { [%emt 0:00:07]} Bc3 {[%emt 0:00:04]} 73. Rd3 {[%emt 0:00:01]} Be5 {[%emt 0:00: 10]} 74. Kh7 {[%emt 0:00:09]} Bf4 {[%emt 0:00:06]} 75. Ra3 {[%emt 0:00:06]} Be5 {[%emt 0:00:12]} 76. Ra5 {[%emt 0:00:03]} Bc3 {[%emt 0:00:03]} 77. Ra8+ { [%emt 0:00:03]} Ke7 {[%emt 0:00:02]} 78. Ra7+ {[%emt 0:00:01]} Ke8 {[%emt 0:00: 01]} 79. Rb7 {[%emt 0:00:11]} Rf7+ {[%emt 0:00:04]} (79... Kf8 80. Rb8+ Ke7 81. Rc8 Bd4) 80. Kg6 {[%emt 0:00:10]} Rxb7 {[%emt 0:00:13]} (80... Re7 $4 81. Rxe7+ Kxe7 82. Bb7 $18) (80... Rf6+ 81. Kg5 Ra6 82. Rc7) 81. Bxb7 {[%emt 0:00:00]} Ke7 {[%emt 0:00:01]} 82. Be4 {[%emt 0:00:09]} Bf6 {[%emt 0:00:01]} 83. Bd3 { [%emt 0:00:02]} Bc3 {[%emt 0:00:03]} 84. Be4 {[%emt 0:00:02]} Bf6 {[%emt 0:00: 10]} 85. c4 {[%emt 0:00:02]} Bd4 {[%emt 0:00:01]} 86. Bd5 {[%emt 0:00:01]} Bc5 {[%emt 0:00:14]} 87. f6+ {[%emt 0:00:03]} Kf8 {[%emt 0:00:01]} 88. Kf5 { [%emt 0:00:03]} Ke8 {[%emt 0:00:03]} 89. Ke6 {[%emt 0:00:02]} Kf8 {[%emt 0:00: 06]} 90. Kd7 {[%emt 0:00:04]} Bd4 {[%emt 0:00:01]} 91. f7 {[%emt 0:00:04]} Kg7 {[%emt 0:00:13]} 92. Kd6 {[%emt 0:00:05]} Kf8 {[%emt 0:00:02]} 93. c5 {[%emt 0: 00:05]} Be3 {[%emt 0:00:16]} 94. c6 {[%emt 0:00:03]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "7.7"] [White "Bjerre, Jonas Buhl"] [Black "Murzin, Volodar"] [Result "1-0"] [ECO "E97"] [WhiteElo "2550"] [BlackElo "2478"] [Annotator "Shahid"] [PlyCount "97"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,97,24,26,26,6,37,46,44,44,50,34,34,41,29,43,64,64,56,43,41,41,47,40, 36,37,54,50,57,55,43,38,46,58,62,21,54,21,38,14,8,4,40,-24,-15,-15,-15,-15,10, -1,-28,-8,-4,-32,-26,-26,-14,-14,90,90,0,0,0,0,175,149,207,173,224,127,159,166, 226,160,205,207,281,245,446,359,830,395,396,396,418,426,1424,493,493,497,486, 474,536,459,1038,449,541,589,868,475]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00: 00]} 2. c4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} Bg7 { [%emt 0:00:00]} 4. e4 {[%emt 0:00:01]} O-O {[%emt 0:00:01]} 5. Nf3 {[%emt 0:00: 02]} d6 {[%emt 0:00:02]} 6. Be2 {[%emt 0:00:01]} e5 {[%emt 0:00:02]} 7. O-O { [%emt 0:00:03]} Nc6 {[%emt 0:00:29]} 8. d5 {[%emt 0:00:01]} Ne7 {[%emt 0:00:03] } 9. Bg5 {[%emt 0:00:02]} h6 {[%emt 0:00:04]} 10. Bd2 {[%emt 0:00:03]} Nd7 { [%emt 0:00:56]} 11. Qc1 {[%emt 0:00:03]} Kh7 {[%emt 0:00:02]} 12. Qc2 {[%emt 0: 00:06]} f5 {[%emt 0:00:13]} 13. exf5 {[%emt 0:00:11]} gxf5 {[%emt 0:00:08]} 14. Nh4 {[%emt 0:00:44]} a5 {[%emt 0:01:20]} 15. a3 {[%emt 0:00:38]} Kg8 {[%emt 0: 00:42]} 16. g3 {[%emt 0:00:26]} Nf6 {[%emt 0:00:54]} 17. b4 {[%emt 0:00:15]} Qe8 {[%emt 0:00:36]} 18. Nb5 {[%emt 0:00:49]} Qd7 {[%emt 0:00:13]} 19. Rad1 { [%emt 0:01:25]} axb4 {[%emt 0:00:55]} 20. axb4 {[%emt 0:00:06]} f4 {[%emt 0:00: 04]} 21. Bf3 {[%emt 0:01:09]} Nfxd5 {[%emt 0:01:07]} 22. cxd5 {[%emt 0:00:59]} Qxb5 {[%emt 0:00:03]} 23. Qxc7 {[%emt 0:00:04]} Nf5 {[%emt 0:00:03]} 24. Nxf5 { [%emt 0:00:37]} Bxf5 {[%emt 0:00:04]} 25. Qxd6 {[%emt 0:00:12]} Bd3 {[%emt 0: 01:50]} 26. Bg2 {[%emt 0:01:19]} Bxf1 {[%emt 0:00:31]} 27. Bxf1 {[%emt 0:00:03] } Qa4 {[%emt 0:00:05]} 28. Rc1 {[%emt 0:00:13]} Rf7 $2 {[%emt 0:01:19]} (28... Qe8) 29. Bh3 {[%emt 0:00:13]} (29. Qg6) 29... Kh8 {[%emt 0:00:08]} 30. Be6 { [%emt 0:00:27]} Rff8 {[%emt 0:00:02]} 31. Qe7 {[%emt 0:00:29]} e4 $2 {[%emt 0: 00:29]} (31... Qa2) 32. Bxf4 $18 {[%emt 0:00:36]} Rae8 {[%emt 0:00:07]} 33. Qc7 {[%emt 0:00:11]} Qa2 {[%emt 0:00:04]} 34. Be3 {[%emt 0:00:18]} Qe2 {[%emt 0:00: 03]} 35. Qc2 {[%emt 0:00:11]} Qf3 {[%emt 0:00:04]} 36. Qd1 {[%emt 0:00:05]} Qf6 {[%emt 0:00:04]} 37. Qg4 {[%emt 0:00:09]} Qb2 {[%emt 0:00:04]} 38. Rc7 { [%emt 0:00:04]} Be5 {[%emt 0:00:10]} 39. Qxe4 {[%emt 0:00:24]} Qa1+ {[%emt 0: 00:09]} 40. Rc1 {[%emt 0:00:05]} Qb2 {[%emt 0:00:01]} 41. Qg6 {[%emt 0:00:13]} Bg7 {[%emt 0:00:04]} 42. Rc7 {[%emt 0:00:07]} Ra8 {[%emt 0:00:07]} 43. Bf5 { [%emt 0:00:11]} Rxf5 {[%emt 0:00:04]} 44. Qxf5 {[%emt 0:00:01]} Rf8 {[%emt 0: 00:04]} 45. Qg6 {[%emt 0:00:07]} Qe5 {[%emt 0:00:04]} 46. Rf7 {[%emt 0:00:12]} Ra8 {[%emt 0:00:03]} 47. Qe6 {[%emt 0:00:04]} Qh5 {[%emt 0:00:09]} 48. Kg2 { [%emt 0:00:04]} Rd8 {[%emt 0:00:11]} 49. d6 {[%emt 0:00:06]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "7.8"] [White "Gukesh D"] [Black "Abdusattorov, Nodirbek"] [Result "0-1"] [ECO "E04"] [WhiteElo "2578"] [BlackElo "2627"] [Annotator "TA"] [PlyCount "134"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,134,1,0,3,-12,-7,-7,-11,-58,-61,-73,-54,-75,-56,-78,-87,-64,-83,-85, -78,-64,-66,-94,-75,-67,-70,-77,-67,-72,-50,-138,-6,-49,-10,-32,-32,-46,-42, -37,-35,-55,-50,-81,-31,-19,-23,-144,-131,-207,-217,-213,-186,-192,-195,-347, -320,-390,-397,-402,-403,-443,-400,-553,-491,-1391,-1351,-1482,-1277,-1577, -1495,-1095,-1596,-1491,-1355,-1164,-1008,-1008,-992,-992,-931,-921,-813,-747, -735,-666,-592,-592,-36,-66,-87,-66,-66,-386,-381,-379,-378,-478,-425,-354,0, -8,-8,-280,-277,-535,-15,-1114,-1114,-29968,-29970,-29967,-7092,-29980,-29981, -29979,-29976,-29983,-29984,-29983,-29984,-29988,-29989,-29991,-29992,-29992, -29993]} 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. g3 Bb4+ 5. Nbd2 dxc4 6. Bg2 b5 { E04: Open Catalan: 5 Nf3.} 7. a4 c6 8. O-O a5 {The position is equal.} 9. Ne1 Ra7 (9... Qxd4 10. axb5 Bb7 11. Nc2 $11) 10. Nc2 Be7 11. e4 O-O 12. e5 Nd5 13. Ne4 Nd7 {[%CAl Bb8d7,Bd7f6,Bf6g4][%mdl 32] [#]} 14. h4 $146 ({Predecessor:} 14. Qg4 f5 15. exf6 N7xf6 16. Qe2 Nxe4 17. Qxe4 Bf6 18. Re1 Qb6 19. Bh3 Re7 20. Bd2 b4 21. Be3 b3 22. Na3 c3 23. Rab1 Qb4 {0-1 (23) Praczukowski,S (2166)-Krishna Teja,N (2368) Warsaw 2019}) 14... f6 15. exf6 N7xf6 16. Ng5 h6 17. Nf3 Ng4 18. Qe2 Qe8 19. Nd2 h5 20. Ne4 (20. Nf3 $15) 20... Qg6 (20... b4 $1 $17 21. f3 Ngf6 ) 21. Ne3 Nb4 22. axb5 cxb5 23. Nc3 $1 Nxe3 24. Bxe3 Bd7 25. d5 Ra6 26. Rad1 exd5 27. Nxd5 Nxd5 28. Bxd5+ (28. Rxd5 $11 {keeps the balance.} Bc6 29. Rfd1) 28... Kh8 $17 29. Bf3 (29. Bf4 $17 {might work better.} Bc5 30. Be4) 29... Bg4 $1 $19 30. Bxg4 Qxg4 ({Don't play} 30... hxg4 31. Rd7 $17) 31. Qxg4 hxg4 32. Rd7 $2 (32. Rd5 b4 33. Bc5 Bxc5 34. Rxc5) 32... Bf6 $1 33. Bd4 Rd8 34. Rxd8+ Bxd8 {[%mdl 4096] Endgame KRB-KRB} 35. Re1 {And now Re8+ would win.} Rd6 36. Re4 a4 37. Rxg4 (37. Kg2 $142 Kh7 38. Be5) 37... Bf6 38. Bxf6 gxf6 {KR-KR} 39. Rf4 Rd2 40. Rxf6 Rxb2 41. Kg2 a3 42. Ra6 a2 {Threatens to win with ...c3.} 43. Ra8+ Kg7 44. Ra7+ Kf6 {White must now prevent ...c3.} 45. Ra6+ Kf7 46. Ra7+ Kg6 47. Ra6+ Kf5 {aiming for ...c3.} 48. h5 Kg5 ({Black should play} 48... Rd2 $19 49. h6 c3) (48... c3 49. h6 Rd2 50. h7 Rd8 51. Rxa2 Ke4) 49. h6 a1=Q $1 { [%CAl Ra1a6]} 50. Rxa1 {h7 would kill now.} Kxh6 51. Ra6+ $2 {[%mdl 8192]} (51. Rc1 $1 $15) 51... Kg5 52. Rc6 Kf5 $1 {[%CAl Rf5e4]} 53. Kf3 Rb3+ 54. Ke2 c3 $2 ({Better is} 54... Ke4 $19 {...Rb2+ is the strong threat.} 55. Kd1 Rb2) 55. Kd3 $11 b4 {Threatening ...Rb1.} 56. Rc5+ $2 {[%mdl 8192] [#]} (56. f4 $1 $11 { and White stays safe.}) 56... Ke6 $1 $19 57. g4 $2 {[#]} (57. f4 {was worth a try.} Rb2 58. g4) 57... Rb2 $2 (57... Kd6 $1 $19 {[%CAl Rd6c5]} 58. Rc4 Rb2) 58. Rc4 {[%mdl 8192]} (58. f4 $11) 58... Kd5 59. Rd4+ Kc5 60. Rc4+ Kb5 { ( -> ...Rd2+)} 61. Rf4 Rd2+ {Black mates.} 62. Ke3 b3 63. Rf8 b2 64. Rb8+ Kc4 65. g5 Rd5 66. g6 c2 67. Rc8+ Rc5 {Weighted Error Value: White=0.73/Black=0.43} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "7.9"] [White "Keymer, Vincent"] [Black "Khademalsharieh, Sarasadat"] [Result "1/2-1/2"] [ECO "D32"] [WhiteElo "2591"] [BlackElo "2494"] [Annotator "Shahid"] [PlyCount "129"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,129,26,22,21,5,5,-1,16,6,16,-1,12,5,4,-9,-16,3,-28,-8,-14,-2,3,13,20, 17,32,21,53,41,41,16,27,27,25,27,54,50,46,49,61,42,60,-10,31,-50,-40,-54,31, -24,-32,-53,-69,-65,148,-61,-53,-38,-62,-29,-16,-4,-11,-14,-9,-30,102,111,109, 97,141,58,29,33,120,104,144,137,129,96,94,99,140,130,133,133,117,87,103,91,90, 98,101,97,95,95,88,93,89,91,91,62,60,50,66,59,68,75,75,18,79,93,80,82,80,81, 108,103,120,108,171,156,184,0,0,0,0,0,0,0,0,0]} 1. Nf3 {[%emt 0:00:00]} d5 { [%emt 0:00:00]} 2. e3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 3. c4 {[%emt 0:00: 00]} e6 {[%emt 0:00:00]} 4. Nc3 {[%emt 0:00:00]} c5 {[%emt 0:00:02]} 5. cxd5 { [%emt 0:00:00]} exd5 {[%emt 0:00:02]} 6. d4 {[%emt 0:00:02]} Nc6 {[%emt 0:00: 04]} 7. Bb5 {[%emt 0:00:01]} Bd6 {[%emt 0:00:13]} 8. dxc5 {[%emt 0:00:01]} Bxc5 {[%emt 0:00:02]} 9. O-O {[%emt 0:00:03]} O-O {[%emt 0:00:02]} 10. b3 {[%emt 0: 00:08]} Bg4 {[%emt 0:00:10]} 11. Bb2 {[%emt 0:00:11]} a6 {[%emt 0:00:45]} 12. Bxc6 {[%emt 0:00:02]} bxc6 {[%emt 0:00:01]} 13. h3 {[%emt 0:00:13]} Bd7 { [%emt 0:00:48]} 14. Na4 {[%emt 0:00:36]} Bd6 {[%emt 0:00:01]} 15. Qd4 {[%emt 0: 00:13]} Rb8 {[%emt 0:00:15]} 16. Nc5 {[%emt 0:00:36]} Re8 {[%emt 0:00:21]} 17. Rac1 {[%emt 0:00:33]} Rb5 {[%emt 0:00:50]} 18. Rfd1 {[%emt 0:02:08]} Bc8 { [%emt 0:00:33]} 19. Nd3 {[%emt 0:00:47]} Bd7 {[%emt 0:00:39]} 20. Nde5 { [%emt 0:01:08]} (20. Qa7) 20... c5 {[%emt 0:01:01]} 21. Qd2 {[%emt 0:00:49]} Be6 {[%emt 0:01:23]} 22. Qc2 {[%emt 0:00:03]} Ne4 {[%emt 0:00:15]} 23. Nd3 { [%emt 0:00:35]} Qa5 {[%emt 0:00:45]} 24. a3 {[%emt 0:00:28]} Rc8 {[%emt 0:00: 49]} 25. Nf4 {[%emt 0:00:38]} Bxf4 {[%emt 0:00:21]} 26. exf4 {[%emt 0:00:00]} Qb6 {[%emt 0:00:27]} 27. b4 {[%emt 0:00:23]} (27. Nd4 $18) 27... Qb7 {[%emt 0: 00:33]} 28. Qe2 {[%emt 0:00:27]} a5 {[%emt 0:00:18]} 29. f5 {[%emt 0:00:24]} Bxf5 {[%emt 0:00:03]} 30. Rxd5 {[%emt 0:00:04]} Qxd5 {[%emt 0:00:22]} 31. Qxb5 {[%emt 0:00:02]} axb4 {[%emt 0:00:01]} 32. axb4 {[%emt 0:00:02]} Nd6 {[%emt 0: 00:27]} 33. Rxc5 {[%emt 0:00:26]} Qd1+ {[%emt 0:00:12]} 34. Qf1 {[%emt 0:00:01] } Qb3 {[%emt 0:00:11]} 35. Be5 {[%emt 0:00:14]} Qxb4 {[%emt 0:00:12]} 36. Rd5 { [%emt 0:00:33]} Nc4 $2 {[%emt 0:00:26]} 37. Bxg7 {[%emt 0:00:13]} Be4 {[%emt 0: 00:24]} 38. Rg5 {[%emt 0:00:05]} Bg6 {[%emt 0:00:01]} 39. Bd4 {[%emt 0:00:31]} Nd2 {[%emt 0:00:01]} 40. Nxd2 {[%emt 0:00:01]} Qxd2 {[%emt 0:00:01]} 41. Be3 { [%emt 0:00:01]} Qd6 {[%emt 0:00:02]} 42. h4 {[%emt 0:00:05]} h6 {[%emt 0:00:03] } 43. Rg3 {[%emt 0:00:03]} Kh7 {[%emt 0:00:01]} 44. h5 {[%emt 0:00:21]} Bxh5 { [%emt 0:00:04]} 45. Rh3 {[%emt 0:00:01]} Qd1 {[%emt 0:00:25]} 46. Qxd1 { [%emt 0:00:19]} Bxd1 {[%emt 0:00:01]} 47. Rxh6+ {[%emt 0:00:00]} Kg7 {[%emt 0: 00:01]} 48. Rd6 {[%emt 0:00:04]} Bb3 {[%emt 0:00:02]} 49. Bd4+ {[%emt 0:00:02]} Kh7 {[%emt 0:00:01]} 50. Rf6 {[%emt 0:00:14]} Be6 {[%emt 0:00:01]} 51. Rf4 { [%emt 0:00:03]} Rc4 {[%emt 0:00:10]} 52. f3 {[%emt 0:00:07]} Ra4 {[%emt 0:00: 03]} 53. Kf2 {[%emt 0:00:06]} Kg6 {[%emt 0:00:02]} 54. Rf6+ {[%emt 0:00:08]} Kh7 {[%emt 0:00:01]} 55. Ke3 {[%emt 0:00:07]} Ra5 {[%emt 0:00:06]} 56. g4 { [%emt 0:00:03]} Ra3+ {[%emt 0:00:04]} 57. Ke4 {[%emt 0:00:04]} Ra2 {[%emt 0:00: 05]} 58. g5 {[%emt 0:00:08]} Rh2 {[%emt 0:00:03]} 59. Ke5 {[%emt 0:00:09]} Rh5 {[%emt 0:00:04]} 60. f4 {[%emt 0:00:03]} Kg8 {[%emt 0:00:03]} 61. f5 {[%emt 0: 00:09]} Rxg5 {[%emt 0:00:03]} 62. Kf4 {[%emt 0:00:01]} Rxf5+ {[%emt 0:00:02]} 63. Rxf5 {[%emt 0:00:01]} Bxf5 {[%emt 0:00:00]} 64. Kxf5 {[%emt 0:00:00]} f6 { [%emt 0:00:02]} 65. Kxf6 {[%emt 0:00:00]} 1/2-1/2 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "7.10"] [White "Mendonca, Leon Luke"] [Black "Abdumalik, Zhansaya"] [Result "1/2-1/2"] [ECO "D93"] [WhiteElo "2549"] [BlackElo "2472"] [Annotator "Shahid"] [PlyCount "129"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,93,22,21,26,6,34,44,49,29,28,29,50,44,44,53,34,23,26,26,17,9,11,-16, 26,25,11,4,11,16,15,15,38,17,19,17,20,29,26,25,24,0,0,0,0,0,24,22,31,25,25,24, 27,21,46,24,20,20,20,14,25,13,13,13,11,8,8,6,6,6,8,-3,8,8,8,0,16,8,6,-3,0,-20, -25,-25,-56,-61,-61,-61,-74,-74,-1,-74,-74,-74,-74,-74]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 3. Nc3 { [%emt 0:00:04]} d5 {[%emt 0:00:00]} 4. Bf4 {[%emt 0:00:06]} Bg7 {[%emt 0:00:00] } 5. e3 {[%emt 0:00:05]} c6 {[%emt 0:00:26]} 6. Nf3 {[%emt 0:00:39]} O-O { [%emt 0:00:06]} 7. Bd3 {[%emt 0:00:52]} Be6 {[%emt 0:00:22]} 8. c5 {[%emt 0:00: 44]} Nh5 {[%emt 0:00:09]} 9. Be5 {[%emt 0:01:26]} f6 {[%emt 0:00:23]} 10. Bxb8 {[%emt 0:00:52]} Rxb8 {[%emt 0:00:12]} 11. O-O {[%emt 0:01:54]} f5 {[%emt 0:01: 18]} 12. b4 {[%emt 0:01:33]} Nf6 {[%emt 0:00:51]} 13. Ne5 {[%emt 0:00:47]} Ne4 {[%emt 0:00:13]} 14. Ne2 {[%emt 0:00:11]} Qc7 {[%emt 0:00:38]} 15. f4 {[%emt 0: 00:12]} b6 {[%emt 0:00:58]} 16. Qc2 {[%emt 0:00:29]} bxc5 {[%emt 0:01:06]} 17. bxc5 {[%emt 0:00:00]} Rb4 {[%emt 0:00:43]} 18. Rab1 {[%emt 0:00:29]} Rfb8 { [%emt 0:00:03]} 19. Rxb4 {[%emt 0:00:07]} Rxb4 {[%emt 0:00:01]} 20. Rb1 { [%emt 0:00:44]} Rxb1+ {[%emt 0:00:15]} 21. Qxb1 {[%emt 0:00:00]} Bxe5 {[%emt 0: 00:01]} 22. fxe5 {[%emt 0:00:00]} Bc8 {[%emt 0:00:13]} 23. Qb4 {[%emt 0:00:08]} Kf7 {[%emt 0:00:37]} 24. g3 {[%emt 0:00:04]} Ng5 {[%emt 0:00:15]} 25. Kg2 { [%emt 0:00:04]} Qb7 {[%emt 0:00:07]} 26. a3 {[%emt 0:00:21]} Ne6 {[%emt 0:00: 26]} 27. Nc1 {[%emt 0:00:06]} Qxb4 {[%emt 0:00:24]} 28. axb4 {[%emt 0:00:02]} Nc7 {[%emt 0:00:00]} 29. Kf3 {[%emt 0:00:12]} Bb7 {[%emt 0:01:05]} 30. Nb3 { [%emt 0:00:03]} Ba6 {[%emt 0:00:09]} 31. Ke2 {[%emt 0:00:09]} Ke8 {[%emt 0:00: 03]} 32. Na5 {[%emt 0:00:05]} Bxd3+ {[%emt 0:00:13]} 33. Kxd3 {[%emt 0:00:00]} Kd7 {[%emt 0:00:00]} 34. Nb3 {[%emt 0:00:04]} g5 {[%emt 0:00:15]} 35. Nd2 { [%emt 0:00:04]} h6 {[%emt 0:00:12]} 36. Nf3 {[%emt 0:00:11]} Ne6 {[%emt 0:00: 03]} 37. Ne1 {[%emt 0:00:07]} Nc7 {[%emt 0:00:05]} 38. Nf3 {[%emt 0:00:03]} Ne6 {[%emt 0:00:01]} 39. Nd2 {[%emt 0:00:05]} g4 {[%emt 0:00:06]} 40. Nb1 {[%emt 0: 00:06]} Ng5 {[%emt 0:00:03]} 41. Nd2 {[%emt 0:00:03]} Kc7 {[%emt 0:00:05]} 42. Ke2 {[%emt 0:00:12]} Kb7 {[%emt 0:00:01]} 43. Nb1 {[%emt 0:00:02]} Ne4 { [%emt 0:00:09]} 44. Kd3 {[%emt 0:00:06]} h5 {[%emt 0:00:05]} 45. Na3 $2 { [%emt 0:00:04]} Ka6 {[%emt 0:00:17]} (45... Ng5 46. Nc2 Nf3) 46. Ke2 {[%emt 0: 00:08]} Ng5 {[%emt 0:00:04]} 47. Kf2 {[%emt 0:00:06]} Nf3 {[%emt 0:00:23]} 48. Kg2 {[%emt 0:00:06]} Nd2 {[%emt 0:00:04]} (48... Ne1+ 49. Kf1 (49. Kf2 Nd3+) 49... Nd3 50. Nc2 Kb5 $19) 49. Kf2 {[%emt 0:00:02]} Nc4 {[%emt 0:00:12]} 50. Nc2 {[%emt 0:00:02]} (50. Nxc4 dxc4 51. Ke2 Kb5 52. Kd2 $11) 50... Kb5 { [%emt 0:00:02]} 51. Ke2 {[%emt 0:00:01]} Ka4 {[%emt 0:00:18]} 52. Kd3 {[%emt 0: 00:02]} a6 {[%emt 0:00:02]} (52... Kb3) 53. Kc3 {[%emt 0:00:03]} e6 {[%emt 0: 00:04]} 54. Kd3 {[%emt 0:00:13]} Kb3 {[%emt 0:00:02]} 55. Ne1 {[%emt 0:00:01]} Kxb4 {[%emt 0:00:03]} 56. Ng2 {[%emt 0:00:02]} Kb3 {[%emt 0:00:16]} 57. Nf4 { [%emt 0:00:03]} a5 {[%emt 0:00:00]} 58. Nxe6 {[%emt 0:00:01]} a4 {[%emt 0:00: 01]} 59. Nf4 {[%emt 0:00:14]} Nb2+ {[%emt 0:00:16]} 60. Kd2 {[%emt 0:00:02]} a3 {[%emt 0:00:07]} 61. Ne2 {[%emt 0:00:03]} Nc4+ {[%emt 0:00:00]} 62. Kd3 { [%emt 0:00:02]} Nb2+ {[%emt 0:00:02]} (62... Kb2 63. Nc3 f4 64. exf4 Ne3 65. e6 Nf5) 63. Kd2 {[%emt 0:00:01]} Nc4+ {[%emt 0:00:00]} 64. Kd3 {[%emt 0:00:11]} Nb2+ {[%emt 0:00:17]} 65. Kd2 {[%emt 0:00:01]} 1/2-1/2 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "8.1"] [White "Zhu, Jiner"] [Black "Abdumalik, Zhansaya"] [Result "1-0"] [ECO "C91"] [WhiteElo "2459"] [BlackElo "2472"] [Annotator "Shahid"] [PlyCount "75"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,75,22,36,25,21,20,20,18,5,-2,3,22,-13,7,7,-4,-1,-1,-13,9,4,-1,-5,39, 38,44,51,49,31,46,55,69,48,55,51,47,41,42,43,70,72,83,73,73,37,54,45,58,65,65, 49,102,84,40,46,52,35,59,54,44,57,57,37,45,69,164,161,200,194,204,211,325,322, 541,533,613,630]} 1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0: 00:00]} Nc6 {[%emt 0:00:00]} 3. Bb5 {[%emt 0:00:00]} a6 {[%emt 0:00:00]} 4. Ba4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. O-O {[%emt 0:00:01]} Be7 {[%emt 0:00: 00]} 6. Re1 {[%emt 0:00:06]} b5 {[%emt 0:00:00]} 7. Bb3 {[%emt 0:00:01]} O-O { [%emt 0:00:00]} 8. d4 {[%emt 0:00:01]} d6 {[%emt 0:00:06]} 9. c3 {[%emt 0:00: 02]} Bg4 {[%emt 0:00:05]} 10. d5 {[%emt 0:00:03]} Na5 {[%emt 0:00:08]} 11. Bc2 {[%emt 0:00:01]} c5 {[%emt 0:00:20]} 12. h3 {[%emt 0:00:30]} Bd7 {[%emt 0:00: 28]} 13. b3 {[%emt 0:00:18]} Re8 {[%emt 0:00:05]} 14. Be3 {[%emt 0:00:04]} Bf8 {[%emt 0:00:21]} 15. Nbd2 {[%emt 0:00:03]} g6 {[%emt 0:00:09]} 16. Nf1 { [%emt 0:00:06]} Nh5 {[%emt 0:00:02]} 17. Qd2 {[%emt 0:03:01]} Bg7 {[%emt 0:00: 08]} 18. Ng3 {[%emt 0:00:25]} Nf4 {[%emt 0:01:11]} 19. Ne2 {[%emt 0:00:16]} Qf6 {[%emt 0:00:10]} 20. Nxf4 {[%emt 0:00:55]} exf4 {[%emt 0:00:06]} 21. Bxf4 { [%emt 0:00:00]} Qxc3 {[%emt 0:00:04]} 22. e5 {[%emt 0:01:08]} Qxd2 {[%emt 0:00: 27]} 23. Bxd2 {[%emt 0:00:01]} Nb7 {[%emt 0:00:02]} 24. Bf4 {[%emt 0:00:01]} c4 {[%emt 0:01:22]} 25. Rad1 {[%emt 0:01:17]} a5 {[%emt 0:01:20]} 26. exd6 { [%emt 0:00:44]} cxb3 {[%emt 0:00:03]} 27. axb3 {[%emt 0:00:25]} Rac8 {[%emt 0: 00:20]} 28. Bb1 {[%emt 0:00:21]} Nc5 $2 {[%emt 0:00:31]} (28... Rxe1+ 29. Rxe1 Bf8) 29. Rxe8+ {[%emt 0:01:00]} Rxe8 {[%emt 0:00:28]} 30. Rc1 {[%emt 0:00:07]} Rc8 {[%emt 0:00:29]} 31. Nd2 {[%emt 0:00:18]} a4 {[%emt 0:00:09]} (31... Na6) 32. bxa4 {[%emt 0:00:26]} Nxa4 $4 {[%emt 0:00:16]} (32... bxa4) 33. Rc7 $18 { [%emt 0:00:17]} Rxc7 {[%emt 0:00:01]} 34. dxc7 {[%emt 0:00:01]} Nc3 {[%emt 0: 00:00]} 35. Bd3 {[%emt 0:00:04]} b4 {[%emt 0:00:29]} 36. d6 {[%emt 0:00:06]} Nd5 {[%emt 0:00:08]} 37. Bb5 {[%emt 0:00:14]} Be6 {[%emt 0:00:43]} 38. d7 { [%emt 0:00:07]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "8.2"] [White "Khademalsharieh, Sarasadat"] [Black "Mendonca, Leon Luke"] [Result "0-1"] [ECO "D12"] [WhiteElo "2494"] [BlackElo "2549"] [Annotator "Shahid"] [PlyCount "100"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,100,21,21,26,6,32,32,31,27,31,15,13,21,20,5,13,24,40,33,42,31,0,0,4, 29,25,40,12,-15,-8,-5,-26,-26,-4,-4,14,6,-1,-78,-90,-90,-90,-95,-118,-118,-118, -118,-94,-125,-126,-126,-131,-155,-137,-137,-131,-123,-131,-131,-110,-101,-101, -121,-114,-121,-121,-137,-164,-165,-135,-179,-152,-152,-131,-157,-136,-146, -144,-139,-133,-134,-115,-118,-110,-143,-164,-163,-114,-119,-74,-74,-23,-23, -17,-69,-44,-44,-58,-82,-95,-29997,-29998]} 1. d4 {[%emt 0:00:00]} Nf6 { [%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} c6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00: 09]} d5 {[%emt 0:00:04]} 4. e3 {[%emt 0:00:01]} Bf5 {[%emt 0:00:04]} 5. Nc3 { [%emt 0:00:03]} e6 {[%emt 0:00:02]} 6. Nh4 {[%emt 0:00:01]} Be4 {[%emt 0:00:02] } 7. f3 {[%emt 0:00:05]} Bg6 {[%emt 0:00:02]} 8. Qb3 {[%emt 0:00:01]} Qc7 { [%emt 0:00:03]} 9. Bd2 {[%emt 0:00:03]} Be7 {[%emt 0:00:03]} 10. Nxg6 {[%emt 0: 00:03]} hxg6 {[%emt 0:00:02]} 11. O-O-O {[%emt 0:00:09]} dxc4 {[%emt 0:01:43]} 12. Bxc4 {[%emt 0:00:03]} b5 {[%emt 0:00:02]} 13. Bd3 {[%emt 0:00:41]} a6 { [%emt 0:00:15]} 14. h3 {[%emt 0:00:21]} Nbd7 {[%emt 0:00:14]} 15. Ne4 {[%emt 0: 00:28]} c5 {[%emt 0:00:46]} 16. Nxf6+ {[%emt 0:01:27]} Bxf6 {[%emt 0:00:55]} 17. Kb1 {[%emt 0:00:44]} O-O {[%emt 0:01:25]} 18. Be4 {[%emt 0:01:42]} Rac8 { [%emt 0:00:15]} 19. h4 {[%emt 0:01:00]} cxd4 {[%emt 0:01:11]} 20. exd4 { [%emt 0:01:05]} Bxd4 {[%emt 0:00:35]} 21. h5 {[%emt 0:00:09]} Nc5 {[%emt 0:00: 13]} 22. Qc2 {[%emt 0:00:01]} f5 {[%emt 0:01:02]} 23. Bb4 {[%emt 0:00:42]} Rfd8 {[%emt 0:00:40]} 24. Bd3 {[%emt 0:02:13]} (24. Bxc5 Qxc5 25. Qxc5 Rxc5) 24... gxh5 {[%emt 0:00:37]} 25. Bxc5 {[%emt 0:00:09]} Qxc5 {[%emt 0:00:18]} 26. Qe2 { [%emt 0:00:07]} Qe5 {[%emt 0:00:22]} 27. Rxh5 {[%emt 0:00:10]} Qxe2 {[%emt 0: 00:19]} 28. Bxe2 {[%emt 0:00:02]} Kf7 {[%emt 0:00:10]} 29. g4 {[%emt 0:00:09]} g6 {[%emt 0:00:25]} 30. Rh7+ {[%emt 0:00:05]} Bg7 {[%emt 0:00:02]} 31. gxf5 { [%emt 0:00:06]} exf5 {[%emt 0:00:13]} 32. Rhh1 {[%emt 0:00:02]} Be5 {[%emt 0: 00:06]} 33. Bd3 {[%emt 0:00:01]} Kf6 {[%emt 0:00:02]} 34. Bc2 {[%emt 0:00:06]} Rh8 {[%emt 0:00:10]} 35. a4 {[%emt 0:00:12]} bxa4 {[%emt 0:00:21]} 36. Bxa4 { [%emt 0:00:03]} Rb8 {[%emt 0:00:05]} 37. b3 {[%emt 0:00:02]} Rxh1 {[%emt 0:00: 05]} 38. Rxh1 {[%emt 0:00:01]} Rd8 {[%emt 0:00:00]} 39. Kc2 {[%emt 0:00:02]} Rc8+ {[%emt 0:00:03]} 40. Kd2 {[%emt 0:00:01]} Bf4+ {[%emt 0:00:11]} 41. Kd3 { [%emt 0:00:08]} Rd8+ {[%emt 0:00:02]} 42. Ke2 {[%emt 0:00:02]} Rd2+ {[%emt 0: 00:01]} 43. Ke1 {[%emt 0:00:04]} Rc2 {[%emt 0:00:08]} 44. Rh8 {[%emt 0:00:03]} Kg5 {[%emt 0:00:14]} 45. Ra8 {[%emt 0:00:08]} Kh4 {[%emt 0:00:03]} 46. Rxa6 { [%emt 0:00:04]} g5 {[%emt 0:00:01]} 47. Rc6 {[%emt 0:00:04]} Rb2 {[%emt 0:00: 03]} 48. Rc5 {[%emt 0:00:11]} Kg3 {[%emt 0:00:02]} 49. Rxf5 {[%emt 0:00:04]} Kxf3 {[%emt 0:00:01]} 50. Rc5 $4 {[%emt 0:00:09]} (50. Rd5) 50... Rb1+ { [%emt 0:00:05]} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "8.3"] [White "Abdusattorov, Nodirbek"] [Black "Keymer, Vincent"] [Result "1-0"] [ECO "B50"] [WhiteElo "2627"] [BlackElo "2591"] [Annotator "TA"] [PlyCount "69"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,68,0,-3,0,0,-7,-12,-4,18,29,32,25,25,-1,4,0,0,0,0,0,0,0,20,0,0,-6,0, -22,-22,-20,-6,0,121,87,98,100,186,179,146,7,21,1,7,5,61,71,75,1,49,54,1123, 1081,29996,29997,29997,29998,29998,29999,29999]} 1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. e5 dxe5 5. Nxe5 a6 6. a4 Qc7 {6...Nbd7 deserves study.} 7. d4 {B50: Sicilian: 2...d6, Miscellaneous.} e6 8. Bf4 Bd6 9. Bg3 {The position is equal.} Nbd7 {[%CAl Rd7e5]} 10. Nc4 Bxg3 11. hxg3 O-O 12. Qd3 {[#]} h6 $146 ({ Predecessor:} 12... Rd8 13. dxc5 Nxc5 14. Qe3 Nd5 15. Qf3 Nb4 16. Ne3 Qe5 17. Be2 f5 18. Qh5 h6 {1-0 (26) Djuric,S (2460)-Bruned,B (2227) Metz 2008}) 13. a5 b5 14. axb6 $1 Nxb6 15. dxc5 Nxc4 16. Qxc4 Rb8 17. Bd3 Rxb2 18. O-O Bb7 19. Na4 (19. Qd4 {is more complex.} Qd7 20. Qd6 Rd8 21. Rfb1 Rxb1+ 22. Rxb1 Bc6 23. Bxa6 Qxd6 24. cxd6 Rxd6 25. Rb8+) 19... Rb5 20. Qc3 Ra5 {Strongly threatening . ..Rxa4!} (20... Nd5 {with more complications.} 21. Qd2 Ra5 22. Rfb1 Bc6 23. Nc3 Rxa1 24. Rxa1 Nb4) 21. Rfb1 $1 {[%CAl Rb1b7]} Bxg2 22. Kxg2 {Black must now prevent Rb6.} Rxa4 {[%mdl 64] Decoy} 23. Rxa4 ({Not} 23. Bh7+ $2 Kxh7 24. Rxa4 Qc6+ 25. Qf3 Qxa4 $19) 23... Qc6+ 24. Kg1 $1 Qxa4 25. Ra1 (25. c6 $1 $16 { [%CAl Rc6c7]}) 25... Qg4 26. c6 {c7 is the strong threat.} Nd5 27. Qe5 Rc8 ( 27... Qg5 $1 $11 28. Qe4 g6) 28. Rxa6 $14 {Hoping for c7!} Nb4 {[#]} 29. Rb6 $40 {[%mdl 128] White has some attack.} (29. Qc7 $1 $16 {[%CAl Rc7c8]} e5 30. Qb7 (30. Qd7 Qxd7 31. cxd7 Rd8 $17) 30... Nxa6 31. Bxa6 Qd1+ 32. Kh2) 29... Qd1+ ({Wrong is} 29... Nxc6 $2 {[#]} 30. Rxc6 $1 {[%mdl 512]} Rf8 31. Rd6 $18) 30. Kg2 Nxc2 $4 {[%mdl 8192] [#] This costs Black the game.} (30... Nxd3 $14 31. cxd3 Qc2) 31. Rb8 $1 $18 {[%CAl Rb8c8]} Rf8 (31... Ne3+ 32. fxe3) 32. Rxf8+ {[%mdl 64] Back Rank. White mates.} Kxf8 33. Qd6+ Ke8 34. Qd7+ Kf8 35. Qd8# { Weighted Error Value: White=0.21/Black=0.43} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "8.4"] [White "Murzin, Volodar"] [Black "Gukesh D"] [Result "0-1"] [ECO "C70"] [WhiteElo "2478"] [BlackElo "2578"] [Annotator "Shahid"] [PlyCount "122"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,122,21,25,20,20,16,11,25,-2,13,9,0,49,56,53,48,50,65,55,39,11,-17,-6, 25,11,47,7,7,39,151,0,32,45,59,49,54,65,65,49,49,47,41,-47,25,-38,-18,-23,5, -26,-15,-9,-17,-21,-21,-18,-23,-20,-29,-17,-17,-17,-17,-10,-18,-91,-93,-88,-58, -68,-41,-47,-47,-46,-99,-151,-146,-145,-141,-203,-173,-193,-193,-209,-189,-189, -212,-284,-282,-315,-265,-286,-178,-181,-169,-169,-169,-193,-184,-178,-160, -202,-208,-206,-206,-206,-207,-213,-203,-210,-183,-210,-190,-213,-211,-209, -209,-209,-220,-228,-205,-29981,-29982,-29983,-29986]} 1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. Bb5 { [%emt 0:00:02]} a6 {[%emt 0:00:00]} 4. Ba4 {[%emt 0:00:02]} Bc5 {[%emt 0:00:00] } 5. O-O {[%emt 0:00:05]} Nge7 {[%emt 0:00:05]} 6. Nxe5 {[%emt 0:01:02]} Nxe5 { [%emt 0:00:03]} 7. d4 {[%emt 0:00:03]} b5 {[%emt 0:00:02]} 8. Bb3 {[%emt 0:00: 01]} Bxd4 {[%emt 0:00:05]} 9. Qxd4 {[%emt 0:00:03]} d6 {[%emt 0:00:02]} 10. Qe3 {[%emt 0:00:25]} c5 {[%emt 0:01:15]} 11. c3 {[%emt 0:00:15]} Be6 {[%emt 0:01: 11]} 12. Bc2 {[%emt 0:00:17]} O-O {[%emt 0:00:43]} 13. Nd2 {[%emt 0:01:21]} f5 {[%emt 0:00:23]} 14. f4 {[%emt 0:00:16]} N5g6 {[%emt 0:01:36]} 15. Nf3 { [%emt 0:00:24]} fxe4 {[%emt 0:00:55]} 16. Bxe4 {[%emt 0:00:05]} Nd5 {[%emt 0: 00:14]} 17. Qe1 {[%emt 0:00:44]} Ngxf4 {[%emt 0:01:46]} 18. Bxf4 $2 {[%emt 0: 02:05]} (18. Bxd5 Bxd5 19. Bxf4 Rxf4 20. Qd2 Rf5 21. g4 $18) 18... Nxf4 { [%emt 0:00:01]} 19. Bxa8 {[%emt 0:00:06]} Qxa8 {[%emt 0:00:05]} 20. Qd2 { [%emt 0:00:51]} Bc4 {[%emt 0:01:18]} 21. Qxd6 {[%emt 0:00:37]} Rf6 {[%emt 0:00: 45]} 22. Qd2 {[%emt 0:00:18]} Bxf1 {[%emt 0:00:25]} 23. Rxf1 {[%emt 0:00:03]} Qf8 {[%emt 0:00:05]} 24. Kh1 {[%emt 0:01:13]} c4 {[%emt 0:00:15]} 25. b3 { [%emt 0:00:26]} Nd3 {[%emt 0:00:11]} 26. bxc4 {[%emt 0:00:07]} bxc4 {[%emt 0: 00:02]} 27. Qe3 {[%emt 0:00:09]} h6 {[%emt 0:00:12]} 28. h3 {[%emt 0:00:24]} Qf7 {[%emt 0:00:09]} 29. Qd4 {[%emt 0:00:27]} Rf4 {[%emt 0:00:11]} 30. Qd6 { [%emt 0:00:11]} Rf6 {[%emt 0:00:08]} 31. Qd4 {[%emt 0:00:02]} Qe6 {[%emt 0:00: 04]} 32. Qd8+ {[%emt 0:00:26]} Kh7 {[%emt 0:00:04]} 33. Qd4 {[%emt 0:00:03]} Qe2 {[%emt 0:00:03]} 34. Kg1 {[%emt 0:00:07]} Rf4 {[%emt 0:00:17]} 35. Qd5 { [%emt 0:00:06]} Qe3+ {[%emt 0:00:02]} 36. Kh2 {[%emt 0:00:03]} Ne5 {[%emt 0:00: 08]} 37. Qb7 {[%emt 0:00:06]} (37. Nd2 Rxf1 38. Nxf1 Qxc3) 37... Qxc3 {[%emt 0: 00:05]} 38. Nxe5 {[%emt 0:00:07]} Qxe5 {[%emt 0:00:09]} 39. Rxf4 {[%emt 0:00: 01]} Qxf4+ {[%emt 0:00:01]} 40. Kh1 {[%emt 0:00:01]} Qc1+ {[%emt 0:00:01]} 41. Kh2 {[%emt 0:00:02]} Qf4+ {[%emt 0:00:02]} 42. Kh1 {[%emt 0:00:01]} c3 { [%emt 0:00:10]} 43. Qc6 {[%emt 0:00:05]} Qc1+ {[%emt 0:00:06]} 44. Kh2 { [%emt 0:00:01]} Qf4+ {[%emt 0:00:01]} 45. Kh1 {[%emt 0:00:01]} Qe5 {[%emt 0:00: 03]} 46. Qc4 {[%emt 0:00:08]} Qe1+ {[%emt 0:00:06]} 47. Kh2 {[%emt 0:00:01]} Qe5+ {[%emt 0:00:01]} 48. Kh1 {[%emt 0:00:01]} a5 {[%emt 0:00:12]} 49. Qd3+ { [%emt 0:00:13]} Kg8 {[%emt 0:00:01]} 50. Qd8+ {[%emt 0:00:04]} Kf7 {[%emt 0:00: 02]} 51. Qd7+ {[%emt 0:00:01]} Kf6 {[%emt 0:00:00]} 52. Qc6+ {[%emt 0:00:04]} Kg5 {[%emt 0:00:03]} 53. Qc4 {[%emt 0:00:02]} Qe1+ {[%emt 0:00:03]} 54. Kh2 { [%emt 0:00:01]} Qe5+ {[%emt 0:00:01]} 55. Kh1 {[%emt 0:00:01]} h5 {[%emt 0:00: 01]} 56. a4 {[%emt 0:00:04]} g6 {[%emt 0:00:16]} 57. Qc6 {[%emt 0:00:33]} Qe1+ {[%emt 0:00:04]} 58. Kh2 {[%emt 0:00:01]} Qe5+ {[%emt 0:00:00]} 59. Kh1 { [%emt 0:00:02]} Qe3 {[%emt 0:00:15]} 60. Qc7 {[%emt 0:00:21]} Qc1+ {[%emt 0:00: 03]} 61. Kh2 {[%emt 0:00:04]} Qf4+ {[%emt 0:00:00]} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "8.5"] [White "Mammadzada, Gunay"] [Black "Bjerre, Jonas Buhl"] [Result "1/2-1/2"] [ECO "B90"] [WhiteElo "2443"] [BlackElo "2550"] [Annotator "Shahid"] [PlyCount "199"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,199,21,20,66,66,75,59,61,26,55,26,61,33,31,31,33,17,7,-1,-9,-7,-4,-4, -1,-6,19,26,32,4,-12,28,40,68,101,126,124,23,2,-11,5,69,117,88,63,19,-3,1,-8, -66,-70,-104,-32,-17,93,94,115,131,145,137,154,152,155,134,134,132,132,119,197, 128,124,163,203,214,233,172,182,210,210,203,197,214,232,210,205,217,260,105, 156,28,207,151,189,109,154,167,208,128,208,202,215,215,215,207,206,113,111,112, 110,115,120,118,122,116,116,122,122,122,117,120,120,120,122,105,104,96,108,116, 108,108,108,81,104,104,103,37,38,36,35,0,0,-29,-29,-53,-53,-57,-56,-54,-54,-53, -53,-55,-55,-60,-53,-56,-53,-53,-53,-53,-53,-53,-53,-53,-53,-60,-53,-60,-60, -65,-53,-60,-49,-49,-42,-41,-41,-41,-37,-38,-29,-29,-32,-31,-32,-32,-29,-29, -29,-28,-29,-29,-1,-1,-1,-1,-1,-1,-1,0,0,0]} 1. e4 {[%emt 0:00:00]} c5 { [%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00: 00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:00]} a6 {[%emt 0:00:00]} 6. Be3 {[%emt 0:00:00]} e5 {[%emt 0:00:01] } 7. Nb3 {[%emt 0:00:02]} Be7 {[%emt 0:00:01]} 8. Qd2 {[%emt 0:00:07]} Ng4 { [%emt 0:00:02]} 9. g3 {[%emt 0:00:05]} Be6 {[%emt 0:00:16]} 10. O-O-O {[%emt 0: 00:06]} Nxe3 {[%emt 0:00:06]} 11. Qxe3 {[%emt 0:00:08]} Nd7 {[%emt 0:00:03]} 12. f4 {[%emt 0:00:11]} b5 {[%emt 0:00:08]} 13. Kb1 {[%emt 0:02:20]} Qb6 { [%emt 0:00:03]} 14. Qxb6 {[%emt 0:00:49]} Nxb6 {[%emt 0:00:04]} 15. Na5 { [%emt 0:00:01]} Rc8 {[%emt 0:02:08]} 16. Nb7 {[%emt 0:01:12]} Rc6 {[%emt 0:02: 34]} 17. Nxb5 {[%emt 0:00:29]} O-O {[%emt 0:01:08]} 18. N5xd6 {[%emt 0:01:50]} Na4 {[%emt 0:00:09]} 19. f5 {[%emt 0:01:56]} Rb6 {[%emt 0:00:37]} 20. Ka1 { [%emt 0:00:11]} Bc8 {[%emt 0:01:24]} 21. Nxc8 {[%emt 0:01:42]} Rxc8 {[%emt 0: 00:02]} 22. Rd7 {[%emt 0:00:25]} Kf8 {[%emt 0:02:14]} 23. b3 {[%emt 0:00:16]} Ke8 {[%emt 0:00:33]} 24. Rxe7+ {[%emt 0:00:01]} Kxe7 {[%emt 0:00:03]} 25. Na5 { [%emt 0:00:00]} Nc3 {[%emt 0:00:12]} (25... Rxc2 26. Bd3 Rc3 27. Bc4 Nc5) 26. Bd3 {[%emt 0:00:05]} Nb5 {[%emt 0:00:04]} 27. Nc4 {[%emt 0:00:02]} Rh6 { [%emt 0:00:06]} 28. Nxe5 {[%emt 0:00:04]} Nd4 {[%emt 0:00:01]} 29. Kb2 { [%emt 0:00:09]} a5 {[%emt 0:00:01]} 30. c3 {[%emt 0:00:05]} Nc6 {[%emt 0:00:03] } 31. Nf3 {[%emt 0:00:05]} Rd6 {[%emt 0:00:03]} 32. Bc4 {[%emt 0:00:03]} f6 { [%emt 0:00:04]} 33. Bd5 {[%emt 0:00:05]} Na7 {[%emt 0:00:08]} 34. c4 {[%emt 0: 00:03]} Nc6 {[%emt 0:00:01]} 35. a3 {[%emt 0:00:01]} Rb8 {[%emt 0:00:02]} 36. Kc3 {[%emt 0:00:05]} Nd8 {[%emt 0:00:02]} 37. b4 {[%emt 0:00:02]} axb4+ { [%emt 0:00:03]} 38. axb4 {[%emt 0:00:00]} Ra6 {[%emt 0:00:00]} 39. Nd4 { [%emt 0:00:21]} Ra3+ {[%emt 0:00:07]} 40. Nb3 {[%emt 0:00:01]} Nb7 {[%emt 0:00: 05]} 41. Kb2 {[%emt 0:00:04]} Ra4 {[%emt 0:00:02]} 42. Kc3 {[%emt 0:00:16]} Nd6 {[%emt 0:00:06]} 43. b5 {[%emt 0:00:01]} Rc8 {[%emt 0:00:02]} 44. Nd2 {[%emt 0: 00:06]} Ra2 {[%emt 0:00:09]} 45. Rd1 {[%emt 0:00:07]} Ra3+ {[%emt 0:00:23]} 46. Kb4 {[%emt 0:00:02]} Rd3 {[%emt 0:00:02]} 47. b6 {[%emt 0:00:09]} Rd4 {[%emt 0: 00:11]} 48. Ka5 {[%emt 0:00:06]} Rc5+ {[%emt 0:00:16]} 49. Kb4 {[%emt 0:00:04]} Rc8 {[%emt 0:00:01]} 50. Kc3 {[%emt 0:00:06]} Nb5+ {[%emt 0:00:02]} 51. Kb3 { [%emt 0:00:01]} (51. Kb2 Nd6 52. Kc1 (52. Kc2 $2 Nxc4) 52... Nxc4 $4 (52... g6 53. fxg6 hxg6 54. b7 $18) 53. b7 $18) 51... Nd6 {[%emt 0:00:01]} 52. Kc2 { [%emt 0:00:06]} (52. b7 Nxb7 53. Kc3 $18) 52... Nxc4 {[%emt 0:00:15]} 53. Nxc4 {[%emt 0:00:04]} Rcxc4+ {[%emt 0:00:00]} 54. Bxc4 {[%emt 0:00:01]} Rxc4+ { [%emt 0:00:00]} 55. Kd3 {[%emt 0:00:09]} Rb4 {[%emt 0:00:02]} 56. Ra1 {[%emt 0: 00:01]} Rxb6 {[%emt 0:00:03]} 57. Ra7+ {[%emt 0:00:07]} Kf8 {[%emt 0:00:01]} 58. Ke3 {[%emt 0:00:04]} Rb2 {[%emt 0:00:05]} 59. h4 {[%emt 0:00:02]} Rb3+ { [%emt 0:00:05]} 60. Kf4 {[%emt 0:00:02]} Rb4 {[%emt 0:00:02]} 61. g4 {[%emt 0: 00:01]} h6 {[%emt 0:00:02]} 62. Rc7 {[%emt 0:00:05]} Ra4 {[%emt 0:00:03]} 63. Rc6 {[%emt 0:00:14]} Kf7 {[%emt 0:00:04]} 64. Rc7+ {[%emt 0:00:10]} Kf8 { [%emt 0:00:02]} 65. Rc3 {[%emt 0:00:06]} Kf7 {[%emt 0:00:03]} 66. Re3 {[%emt 0: 00:01]} Ra1 {[%emt 0:00:06]} 67. g5 {[%emt 0:00:09]} hxg5+ {[%emt 0:00:19]} 68. hxg5 {[%emt 0:00:01]} Rf1+ {[%emt 0:00:04]} 69. Rf3 {[%emt 0:00:02]} fxg5+ { [%emt 0:00:06]} 70. Kg3 {[%emt 0:00:06]} Re1 {[%emt 0:00:06]} 71. Kg4 {[%emt 0: 00:11]} Kf6 {[%emt 0:00:02]} 72. Rf2 {[%emt 0:00:06]} Rxe4+ {[%emt 0:00:01]} 73. Kg3 {[%emt 0:00:00]} Ke5 {[%emt 0:00:12]} 74. Rf1 {[%emt 0:00:06]} Rf4 { [%emt 0:00:05]} 75. Re1+ {[%emt 0:00:04]} Kxf5 {[%emt 0:00:03]} 76. Re7 { [%emt 0:00:00]} Kg6 {[%emt 0:00:03]} 77. Re6+ {[%emt 0:00:02]} Rf6 {[%emt 0:00: 07]} 78. Re7 {[%emt 0:00:02]} Rf7 {[%emt 0:00:04]} 79. Re6+ {[%emt 0:00:01]} Kf5 {[%emt 0:00:03]} 80. Rb6 {[%emt 0:00:03]} Re7 {[%emt 0:00:02]} 81. Rb5+ { [%emt 0:00:01]} Re5 {[%emt 0:00:01]} 82. Rb7 {[%emt 0:00:02]} Kg6 {[%emt 0:00: 30]} 83. Rb6+ {[%emt 0:00:01]} Kh5 {[%emt 0:00:04]} 84. Rb7 {[%emt 0:00:04]} Kh6 {[%emt 0:00:12]} 85. Rb6+ {[%emt 0:00:02]} g6 {[%emt 0:00:02]} 86. Rb8 { [%emt 0:00:02]} Re3+ {[%emt 0:00:01]} 87. Kg4 {[%emt 0:00:01]} Re4+ {[%emt 0: 00:01]} 88. Kg3 {[%emt 0:00:00]} g4 {[%emt 0:00:05]} 89. Rb5 {[%emt 0:00:04]} Ra4 {[%emt 0:00:06]} 90. Rc5 {[%emt 0:00:02]} Rb4 {[%emt 0:00:03]} 91. Ra5 { [%emt 0:00:02]} g5 {[%emt 0:00:03]} 92. Ra8 {[%emt 0:00:04]} Rf4 {[%emt 0:00: 08]} 93. Rb8 {[%emt 0:00:06]} Kh5 {[%emt 0:00:02]} 94. Rh8+ {[%emt 0:00:02]} Kg6 {[%emt 0:00:01]} 95. Rg8+ {[%emt 0:00:11]} Kf5 {[%emt 0:00:04]} 96. Rf8+ { [%emt 0:00:02]} Ke4 {[%emt 0:00:03]} 97. Re8+ {[%emt 0:00:01]} Kf5 {[%emt 0:00: 08]} 98. Rf8+ {[%emt 0:00:01]} Ke4 {[%emt 0:00:06]} 99. Re8+ {[%emt 0:00:01]} Kf5 {[%emt 0:00:03]} 100. Rf8+ {[%emt 0:00:01]} 1/2-1/2 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "8.6"] [White "Nihal Sarin"] [Black "Shuvalova, Polina"] [Result "1-0"] [ECO "A13"] [WhiteElo "2620"] [BlackElo "2476"] [Annotator "Shahid"] [PlyCount "87"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,87,4,0,2,0,8,2,20,23,12,14,50,41,46,29,34,32,41,33,71,14,14,15,45,23, 23,23,23,23,32,23,23,31,23,24,25,10,43,16,91,0,72,0,0,0,0,0,0,0,0,-3,27,35,208, 208,206,190,200,198,91,97,112,97,226,216,568,556,559,506,1051,1026,1213,1208, 1370,1299,1436,1402,29967,1356]} 1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. e3 Be7 5. b3 O-O 6. Bb2 dxc4 {A13: English Opening: 1...e6.} 7. Bxc4 c5 8. d4 b6 {[#] The position is equal.} 9. d5 $146 ({Predecessor:} 9. O-O Bb7 10. Qe2 Qc7 11. Rfd1 a6 12. a4 Bd6 13. h3 cxd4 14. Nxd4 Rd8 15. Rac1 {1/2-1/2 (23) Stoer,N (1589) -Zahn,A (1690) Magdeburg 2010}) 9... exd5 10. Nxd5 {And now Ng5 would win.} Bb7 {[%CAl Rf6d5]} 11. Nxe7+ Qxe7 12. O-O Nbd7 13. Qe2 Rad8 14. Rfd1 h6 $6 (14... Bxf3 15. gxf3 (15. Qxf3 Ne5) 15... Ne5) 15. a4 (15. Nh4 $16) 15... Ne4 16. Qc2 Ng5 17. Nxg5 Qxg5 {[%csl Gb7][%CAl Rg5g2]} 18. f4 Qe7 19. Qg6 {[%csl Gb2][%CAl Rg6g7]} Nf6 20. Bxf6 Qxf6 21. Qxf6 gxf6 22. Kf2 Kg7 23. g4 a6 24. h3 f5 (24... a5 $11) 25. Rac1 (25. gxf5 $16 Rfe8 26. Rg1+ Kf6 27. Rad1) 25... Kf6 (25... a5 $11 {keeps the balance.}) 26. Be2 (26. gxf5 $16 Rg8 27. a5) 26... a5 $11 27. Bd3 fxg4 28. hxg4 Rg8 29. Bc4 Ke7 (29... Rxd1 30. Rxd1 Rxg4 $2 31. Rd7 $18) 30. Kg3 (30. Be2 {with more complications.} Bd5 31. Rb1 h5 32. gxh5 Rg2+ 33. Ke1) 30... Bc8 31. Rxd8 Rxd8 $2 {[%mdl 4096] Endgame KRB-KRB} (31... Rxg4+ $14 32. Kf2 Kxd8) 32. Rh1 $18 Rg8 33. Rh4 ({Not} 33. Rxh6 Rxg4+ 34. Kf3 Rg6 $14) 33... Rg6 34. Kf3 Rd6 35. Rh5 Bb7+ 36. Kg3 Bc6 {[#]} (36... Kf8 $16) 37. f5 $1 Rd1 $2 (37... Kf8 {is tougher.} 38. Kf4 Kg7) 38. Rxh6 f6 39. Rh7+ Kd6 (39... Kd8 $142 40. Rf7 Rd6) 40. Rf7 Rg1+ 41. Kf4 Bd7 42. Rxf6+ Ke7 43. Rxb6 Rg2 44. e4 { Weighted Error Value: White=0.12/Black=0.58} (44. f6+ $142 Kd8 45. Kf3 Rg1 46. Rb8+ Kc7 {[#]} 47. f7 $1 {[%mdl 512]} Kxb8 48. f8=Q+ {[%mdl 64] Double Attack} Kb7 49. Qe7) 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "8.7"] [White "Badelka, Olga"] [Black "Yoo, Christopher Woojin"] [Result "0-1"] [ECO "D24"] [WhiteElo "2433"] [BlackElo "2455"] [Annotator "Shahid"] [PlyCount "58"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,58,21,21,26,6,10,7,20,20,41,54,31,30,31,16,9,4,1,2,6,-14,0,-8,-10,21, 88,58,105,51,75,29,44,37,42,4,0,-19,101,139,64,44,39,57,83,70,175,-85,-122, -136,-134,-134,-134,-239,-222,-222,-220,-220,-244,-387,-381]} 1. d4 {[%emt 0: 00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:04]} 4. Nc3 {[%emt 0:00:02]} dxc4 {[%emt 0:00: 09]} 5. e3 {[%emt 0:00:06]} a6 {[%emt 0:00:03]} 6. a4 {[%emt 0:00:01]} Bb4 { [%emt 0:00:06]} 7. Bxc4 {[%emt 0:00:07]} b6 {[%emt 0:00:03]} 8. O-O {[%emt 0: 00:07]} Bb7 {[%emt 0:00:03]} 9. Qe2 {[%emt 0:00:12]} Nbd7 {[%emt 0:00:59]} 10. Rd1 {[%emt 0:00:22]} Qe7 {[%emt 0:01:54]} 11. Bd3 {[%emt 0:03:12]} c5 {[%emt 0: 01:32]} 12. Na2 {[%emt 0:00:16]} a5 {[%emt 0:01:36]} 13. Nxb4 {[%emt 0:00:15]} axb4 {[%emt 0:00:02]} 14. e4 {[%emt 0:00:14]} cxd4 {[%emt 0:00:46]} 15. e5 { [%emt 0:00:57]} Nd5 {[%emt 0:00:24]} 16. Bg5 {[%emt 0:00:14]} f6 {[%emt 0:00: 35]} 17. exf6 {[%emt 0:00:11]} gxf6 {[%emt 0:00:00]} 18. Bd2 {[%emt 0:00:03]} O-O {[%emt 0:01:10]} 19. Nxd4 {[%emt 0:00:38]} Ne5 {[%emt 0:00:03]} 20. Be4 { [%emt 0:00:20]} Kh8 {[%emt 0:00:24]} 21. f4 {[%emt 0:00:35]} Qc5 {[%emt 0:00: 23]} 22. Bxb4 {[%emt 0:01:52]} Nxb4 {[%emt 0:00:59]} (22... Qxb4 23. fxe5) 23. Bxb7 {[%emt 0:00:12]} Ned3 {[%emt 0:00:02]} 24. Bxa8 {[%emt 0:01:21]} Qxd4+ { [%emt 0:00:05]} 25. Kf1 {[%emt 0:00:01]} Rxa8 {[%emt 0:00:04]} 26. Ra3 { [%emt 0:00:14]} Qxf4+ {[%emt 0:00:05]} 27. Qf3 {[%emt 0:00:01]} Qxf3+ {[%emt 0: 00:01]} 28. gxf3 {[%emt 0:00:00]} Nxb2 {[%emt 0:00:05]} 29. Rd6 {[%emt 0:00:16] } Nc4 {[%emt 0:00:02]} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "8.8"] [White "Lei, Tingjie"] [Black "Liang, Awonder"] [Result "0-1"] [ECO "E92"] [WhiteElo "2505"] [BlackElo "2592"] [Annotator "Shahid"] [PlyCount "56"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,56,21,21,26,10,44,44,34,34,34,23,21,43,52,13,18,21,7,-12,3,-21,11,25, 50,12,28,0,4,19,0,23,39,17,52,13,27,34,26,25,158,125,200,200,173,37,34,-118, -109,-159,-114,-29991,-29992,-29993,-29994,-29995,-29996,-29997,-29998]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} g6 {[%emt 0:00:00] } 3. Nc3 {[%emt 0:00:00]} Bg7 {[%emt 0:00:00]} 4. e4 {[%emt 0:00:01]} d6 { [%emt 0:00:00]} 5. h3 {[%emt 0:00:01]} O-O {[%emt 0:00:01]} 6. Nf3 {[%emt 0:00: 01]} e5 {[%emt 0:00:14]} 7. d5 {[%emt 0:00:02]} a5 {[%emt 0:00:11]} 8. Be3 { [%emt 0:00:04]} Na6 {[%emt 0:00:04]} 9. g4 {[%emt 0:00:01]} Nc5 {[%emt 0:00:08] } 10. Nd2 {[%emt 0:00:02]} c6 {[%emt 0:00:01]} 11. Be2 {[%emt 0:00:09]} a4 { [%emt 0:00:04]} 12. Qc2 {[%emt 0:01:53]} Qa5 {[%emt 0:00:17]} 13. f3 {[%emt 0: 01:23]} Bd7 {[%emt 0:01:25]} 14. Kf2 {[%emt 0:00:03]} Ne8 {[%emt 0:03:02]} 15. Rag1 {[%emt 0:00:16]} a3 {[%emt 0:00:13]} 16. b3 {[%emt 0:00:05]} Nc7 {[%emt 0: 00:07]} 17. h4 {[%emt 0:00:43]} N7a6 {[%emt 0:00:05]} 18. Ndb1 {[%emt 0:00:58]} Nb4 {[%emt 0:00:17]} 19. Qd1 {[%emt 0:00:02]} f5 {[%emt 0:01:31]} 20. gxf5 { [%emt 0:00:05]} gxf5 {[%emt 0:00:00]} 21. Bh6 {[%emt 0:00:27]} Rf7 {[%emt 0:00: 02]} 22. Rxg7+ {[%emt 0:02:03]} Rxg7 {[%emt 0:00:01]} 23. Rg1 {[%emt 0:00:09]} Rg6 {[%emt 0:00:29]} 24. h5 {[%emt 0:00:15]} Qb6 {[%emt 0:00:12]} 25. hxg6 { [%emt 0:02:54]} (25. Be3 Rxg1 26. Qxg1+ Kf7 $17) 25... Nxe4+ {[%emt 0:00:04]} 26. Kg2 {[%emt 0:00:01]} Qf2+ {[%emt 0:00:05]} 27. Kh1 {[%emt 0:00:02]} Qh4+ { [%emt 0:00:02]} 28. Kg2 {[%emt 0:00:03]} Qg3+ {[%emt 0:00:01]} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "8.9"] [White "Yip, Carissa"] [Black "Saduakassova, Dinara"] [Result "1-0"] [WhiteElo "2430"] [BlackElo "2500"] [Annotator "ChessBase"] [PlyCount "1"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,1,21,20]} 1. e4 {[%emt 0:00:00]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "8.10"] [White "Praggnanandhaa R"] [Black "Salimova, Nurgyul"] [Result "1-0"] [ECO "D30"] [WhiteElo "2608"] [BlackElo "2397"] [Annotator "Shahid"] [PlyCount "189"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,189,27,96,91,88,93,95,84,57,64,87,58,54,47,70,37,42,43,39,29,41,32, 51,57,55,51,54,27,35,30,49,45,47,47,85,62,74,57,200,184,237,128,128,122,120, 118,125,111,141,134,145,152,252,145,218,215,227,184,233,0,245,226,272,301,281, 258,337,326,275,256,202,-554,75,77,83,81,79,38,92,0,315,282,250,74,67,45,147, 63,55,56,56,45,42,12,40,0,0,-14,-15,-14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,8,8,8,0,8,8,8,8,8,0,8,8,8,8,8,8,8,0,0,0,8,8,8,8,8,8,63,63,63,63, 29965,596,29973,29976,29967,29977,29983,29984,29986,29987,29987,29988,29988, 29989,29989,29989,29989,29990,29990,29991]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. O-O e6 5. c4 Nc6 6. cxd5 exd5 7. d4 cxd4 8. Nxd4 Bc5 {is now debated instead of 8...Be7.} (8... Be7 $11) 9. Nxc6 $1 $16 {D30: Queen's Gambit Declined: Systems without Nc3.} bxc6 10. Qc2 $1 {[%CAl Rc2c5]} Qb6 11. Nc3 $1 {[%CAl Rc3a4] White is better.} Be7 12. Be3 Qa6 13. Na4 O-O $1 14. Rac1 {[#]} Bd7 $146 ({Predecessor:} 14... Rb8 15. Qxc6 Qxe2 16. Rfe1 Qh5 17. Bf4 Bd7 18. Qc2 Rbc8 19. Qb3 Bxa4 20. Qxa4 Bc5 {1/2-1/2 (34) Pena Canapa,A (1840)-Castro,C (2061) Montevideo 2017}) 15. Nc5 Bxc5 16. Bxc5 Rfe8 17. e3 Ne4 18. Bd4 Rab8 19. b3 Qb7 20. Qb2 f6 21. Rc2 a5 22. Rfc1 Qc7 23. Qa3 Qd8 24. h4 Qc7 25. Bf3 Rb5 26. Kg2 Qb8 $2 ({Black should play} 26... Ra8 $14) (26... h6) 27. Be2 $18 Rb7 (27... Rb4 $142 28. Qxa5 Qb7) 28. Qxa5 (28. Ba6 $1 $18 {[%CAl Ra6b7]}) 28... Qd6 $16 29. Bf3 Qe6 30. Qa6 Rbb8 31. Kg1 Qf5 32. Bg2 h5 33. Qe2 Qg6 (33... Red8 $16 34. Qf3 Qg4 35. Qxg4 hxg4 36. Bxe4 dxe4) 34. Qf3 (34. Bf3 $18) 34... Nd6 (34... Ra8 $16 35. a4 Reb8) 35. Qf4 $18 Nf5 36. Bb2 Nh6 37. Bd4 $2 (37. Rd2 $1 $18) 37... Ra8 $2 (37... Nf5 $11) 38. a4 Nf7 39. Rxc6 Bxc6 40. Rxc6 Rad8 41. Rc1 Ne5 { intending .. .Nd3.} 42. Rd1 Qc2 43. Bf3 $4 {[%mdl 8192]} (43. Ra1 $18 {and life is good for White.} Qxb3 44. a5) 43... Nd3 $2 {[#]} (43... Ng6 $19 44. Bxd5+ Rxd5 45. Qf3 Red8 $19) 44. Rxd3 $1 $16 Qxd3 45. Bxh5 Re7 46. b4 {[%mdl 1024] White has strong compensation.} Rc8 (46... Qe4 $14) 47. Bf3 ({Better is} 47. Bc5 $16 Re5 48. Bf3) 47... Qc4 $2 {[%mdl 8192]} (47... Rc1+ $11 48. Kh2 Re4 49. Bxe4 dxe4) 48. b5 (48. Qd6 Kf8 49. Kg2 $18) 48... Rd8 49. b6 $2 (49. Bb6 $18 {and White stays clearly on top.} Qxf4 50. gxf4) 49... Qxa4 50. h5 Qb3 {[#] } ({Black should try} 50... Qc2 $14) 51. h6 (51. Qf5 $1 $16 {And now h6! would win.} Qb5 52. h6) 51... Qb1+ $14 52. Kg2 {Hoping for hxg7.} Qg6 53. hxg7 Kxg7 54. Bc5 Rf7 55. Bd4 Rh8 56. Qg4 (56. g4 {keeps more tension.} Qh7 57. Qg5+ Kf8 58. Qh5 Qxh5 59. gxh5 Rg8+ 60. Kf1) 56... Qxg4 57. Bxg4 Rb8 (57... Re7 { is interesting.} 58. f4 Ra8 59. Kf3 Kg6 60. Bc5 Re4) 58. Be6 Rfb7 59. Bxd5 Rxb6 60. Bxb6 Rxb6 $11 {[%mdl 4096] Endgame KR-KB} 61. Kf3 Rd6 62. Ke4 Rb6 63. Kf4 Rb2 64. f3 Kg6 (64... Rd2 $5 {[%CAl Rd2d5]} 65. Be4 Ra2 $11) 65. e4 Re2 66. Be6 Re1 67. Bd7 Re2 68. g4 Re1 69. Be8+ Kg7 70. g5 Rg1 71. gxf6+ Kxf6 72. Bh5 Re1 73. Bg4 Re2 74. Bd7 Re1 75. Bc6 Re2 76. Bd5 Re1 77. Bc4 Ke7 (77... Rd1 { keeps more tension.} 78. e5+ Kg6 79. Be6 Rd4+ 80. Ke3 Rb4) (77... Rc1) 78. Ke5 Rc1 79. Kd4 (79. Bd5 {looks sharper.} Rc3 80. f4 Ra3 81. Kf5 Rd3 82. Bg8) 79... Rd1+ 80. Bd3 Ke6 81. f4 Re1 82. e5 {With the idea f5+.} Rd1 83. f5+ Kd7 (83... Ke7 $11) 84. Ke4 $14 Re1+ 85. Kf4 Rg1 $2 {[%mdl 8192]} (85... Rd1 $14 86. Bb5+ Ke7) 86. f6 Ra1 87. Bf5+ {White mates.} Ke8 {[#]} 88. e6 $1 Ra7 89. Be4 Kf8 90. Ke5 Ke8 91. Kd6 Kf8 92. e7+ Kf7 93. Bd5+ Kxf6 94. e8=Q Ra6+ 95. Bc6 {Weighted Error Value: White=0.41/Black=0.55} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "9.1"] [White "Salimova, Nurgyul"] [Black "Zhu, Jiner"] [Result "1/2-1/2"] [ECO "E11"] [WhiteElo "2397"] [BlackElo "2459"] [Annotator "Shahid"] [PlyCount "102"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,102,21,21,26,26,29,24,6,0,21,20,5,10,16,4,22,6,0,-21,-25,-35,-39,-42, -24,-40,-22,-52,-36,-72,-57,-114,-124,-108,-47,-1,-18,-12,-33,-104,-71,-71,-38, -112,-112,-115,-131,-117,-98,-123,-69,-131,-87,-141,-144,-128,-164,-192,-85, -157,-114,-132,-98,-140,-166,-201,-179,-187,-188,-198,-175,-161,-87,-87,-124, -215,-99,-64,0,0,0,0,0,0,0,0,0,0,0,-33,0,0,0,-80,-67,-67,0,0,0,-8,-42,-17,-29, -76,-37]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:02]} e6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:10]} d5 {[%emt 0:00:00]} 4. c4 {[%emt 0: 00:02]} Bb4+ {[%emt 0:00:03]} 5. Bd2 {[%emt 0:00:03]} Be7 {[%emt 0:00:02]} 6. Bg2 {[%emt 0:00:03]} O-O {[%emt 0:00:01]} 7. O-O {[%emt 0:00:05]} c6 {[%emt 0: 00:03]} 8. Nc3 {[%emt 0:00:08]} dxc4 {[%emt 0:00:07]} 9. e4 {[%emt 0:01:13]} b5 {[%emt 0:00:12]} 10. e5 {[%emt 0:00:21]} Nd5 {[%emt 0:00:02]} 11. Ne4 {[%emt 0: 00:01]} a5 {[%emt 0:01:01]} 12. b3 {[%emt 0:00:17]} Ba6 {[%emt 0:00:11]} 13. Re1 {[%emt 0:00:48]} Nd7 {[%emt 0:00:45]} 14. h4 {[%emt 0:00:25]} Qc7 {[%emt 0: 01:43]} 15. Nfg5 {[%emt 0:01:33]} h6 {[%emt 0:01:50]} 16. Nh3 {[%emt 0:00:21]} f5 {[%emt 0:01:36]} 17. exf6 {[%emt 0:00:06]} N7xf6 {[%emt 0:00:02]} 18. bxc4 { [%emt 0:02:04]} bxc4 {[%emt 0:00:05]} 19. Rc1 {[%emt 0:00:15]} Ba3 {[%emt 0:00: 46]} 20. Rc2 {[%emt 0:00:06]} Bb4 {[%emt 0:00:22]} 21. Nc5 $2 {[%emt 0:01:15]} (21. Nf4) 21... Bxc5 {[%emt 0:00:27]} 22. dxc5 {[%emt 0:00:00]} e5 {[%emt 0:00: 08]} 23. Bf1 {[%emt 0:00:15]} Rad8 {[%emt 0:00:34]} 24. Qc1 {[%emt 0:00:26]} Rfe8 {[%emt 0:00:35]} 25. Qa3 {[%emt 0:00:09]} c3 {[%emt 0:00:30]} 26. Bxc3 { [%emt 0:00:20]} Bxf1 {[%emt 0:00:01]} 27. Rxf1 {[%emt 0:00:15]} Qd7 {[%emt 0: 00:04]} 28. Kg2 {[%emt 0:00:11]} Qg4 {[%emt 0:00:17]} 29. Rcc1 {[%emt 0:00:29]} Ne4 {[%emt 0:00:24]} 30. Be1 {[%emt 0:00:06]} Qg6 {[%emt 0:00:17]} 31. f3 { [%emt 0:00:11]} Nef6 {[%emt 0:00:10]} 32. Qb3 {[%emt 0:00:22]} Kh8 {[%emt 0:00: 02]} 33. Bf2 {[%emt 0:00:08]} e4 {[%emt 0:00:02]} 34. Rce1 {[%emt 0:00:11]} Rb8 {[%emt 0:00:06]} 35. Qa3 {[%emt 0:00:02]} Nh5 {[%emt 0:00:10]} (35... a4) 36. fxe4 {[%emt 0:00:11]} Rxe4 {[%emt 0:00:04]} 37. Qf3 {[%emt 0:00:10]} Rxe1 { [%emt 0:00:11]} 38. Rxe1 {[%emt 0:00:04]} Nhf6 {[%emt 0:00:04]} 39. Bd4 { [%emt 0:00:07]} Rb4 {[%emt 0:00:07]} 40. Bxf6 {[%emt 0:00:06]} Nxf6 {[%emt 0: 00:01]} 41. Nf4 {[%emt 0:00:03]} Rb2+ {[%emt 0:00:03]} 42. Re2 {[%emt 0:00:12]} Rxe2+ {[%emt 0:00:08]} 43. Qxe2 {[%emt 0:00:04]} Qf5 {[%emt 0:00:01]} 44. Qe3 { [%emt 0:00:12]} h5 {[%emt 0:00:06]} 45. Qd4 {[%emt 0:00:03]} Qc2+ {[%emt 0:00: 02]} 46. Kf3 {[%emt 0:00:01]} Qxa2 {[%emt 0:00:06]} 47. Qd8+ {[%emt 0:00:01]} Kh7 {[%emt 0:00:01]} 48. Qd3+ {[%emt 0:00:02]} Kg8 {[%emt 0:00:06]} 49. Qd8+ { [%emt 0:00:03]} Kh7 {[%emt 0:00:05]} 50. Qd3+ {[%emt 0:00:02]} Kh8 {[%emt 0:00: 06]} 51. Qd8+ {[%emt 0:00:14]} Kh7 {[%emt 0:00:19]} 1/2-1/2 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "9.3"] [White "Liang, Awonder"] [Black "Yip, Carissa"] [Result "1-0"] [ECO "B08"] [WhiteElo "2592"] [BlackElo "2430"] [Annotator "Shahid"] [PlyCount "97"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,97,21,21,26,22,43,39,67,67,83,63,77,70,67,47,42,42,49,31,37,26,72,42, 33,-21,-13,-51,66,-105,-1,-52,-98,-103,-101,-101,-101,-101,-81,-39,-36,-53,-49, -58,-39,-87,-122,-127,-85,-122,-121,-196,-200,-219,-237,-237,-217,-249,-237, -254,-127,-185,-186,-177,-148,-144,-143,-165,-154,-160,-189,-170,-133,-123, -125,-153,-111,-121,-152,-144,-70,-89,-23,0,40,61,53,53,56,40,65,60,265,335, 375,392,487,346,335,335]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Bf4 { [%emt 0:00:00]} g6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:02]} d6 {[%emt 0:00:14]} 4. e4 {[%emt 0:00:04]} c6 {[%emt 0:00:01]} 5. Qd2 {[%emt 0:00:03]} Nbd7 { [%emt 0:00:05]} 6. Nf3 {[%emt 0:00:02]} Bg7 {[%emt 0:00:13]} 7. Bh6 {[%emt 0: 00:04]} O-O {[%emt 0:00:07]} 8. Bxg7 {[%emt 0:00:02]} Kxg7 {[%emt 0:00:01]} 9. O-O-O {[%emt 0:00:27]} Qc7 {[%emt 0:00:25]} 10. h4 {[%emt 0:00:15]} h5 { [%emt 0:00:02]} 11. Bd3 {[%emt 0:01:01]} b5 {[%emt 0:00:12]} 12. Rdg1 {[%emt 0: 02:01]} b4 {[%emt 0:00:29]} 13. Nd1 {[%emt 0:00:36]} Nb6 {[%emt 0:00:41]} 14. g4 {[%emt 0:02:25]} Nxg4 {[%emt 0:01:44]} 15. Ne3 {[%emt 0:00:01]} c5 {[%emt 0: 00:31]} 16. b3 {[%emt 0:00:47]} Nxe3 {[%emt 0:01:46]} 17. Qxe3 {[%emt 0:00:12]} c4 {[%emt 0:00:01]} 18. Be2 {[%emt 0:00:37]} Ba6 {[%emt 0:00:19]} (18... cxb3 19. Qxb3 (19. axb3 a5) 19... Bg4) 19. Kb1 {[%emt 0:00:10]} cxb3 {[%emt 0:00:23] } (19... Rfc8) 20. cxb3 {[%emt 0:00:03]} Bxe2 {[%emt 0:00:05]} 21. Qxe2 { [%emt 0:00:00]} a5 {[%emt 0:00:07]} 22. d5 {[%emt 0:00:34]} Qc3 {[%emt 0:00:30] } 23. Rc1 {[%emt 0:00:10]} Qf6 {[%emt 0:00:03]} 24. Rc6 {[%emt 0:00:06]} Nd7 { [%emt 0:00:08]} 25. Rhc1 {[%emt 0:00:09]} a4 {[%emt 0:00:02]} 26. Qb2 {[%emt 0: 00:04]} Qxb2+ {[%emt 0:00:06]} 27. Kxb2 {[%emt 0:00:00]} Nc5 {[%emt 0:00:01]} 28. Rc4 {[%emt 0:00:11]} axb3 {[%emt 0:00:28]} 29. axb3 {[%emt 0:00:01]} Ra3 $2 {[%emt 0:00:02]} (29... Ra5) 30. Rxb4 {[%emt 0:00:13]} Rfa8 {[%emt 0:00:02]} 31. Kc3 {[%emt 0:00:04]} Ra1 {[%emt 0:00:37]} 32. e5 {[%emt 0:00:43]} R8a2 { [%emt 0:00:46]} 33. exd6 {[%emt 0:00:12]} exd6 {[%emt 0:00:01]} 34. Kc4 { [%emt 0:00:28]} Rxf2 {[%emt 0:00:25]} 35. Nd4 {[%emt 0:00:02]} Rf6 {[%emt 0:00: 46]} 36. Kb5 {[%emt 0:00:06]} Rh1 {[%emt 0:00:18]} (36... Nd3) 37. Rc4 { [%emt 0:00:22]} Rb1 {[%emt 0:00:27]} 38. b4 {[%emt 0:00:10]} Nd3 {[%emt 0:00: 02]} 39. Rc7 {[%emt 0:00:04]} Rf2 {[%emt 0:00:31]} 40. Nc6 {[%emt 0:00:16]} Rfb2 {[%emt 0:00:15]} 41. Rd4 {[%emt 0:00:05]} Rb3 {[%emt 0:00:08]} 42. Rd7 { [%emt 0:00:07]} Rf1 {[%emt 0:00:20]} 43. Rxd6 {[%emt 0:00:07]} Nc1 {[%emt 0:00: 05]} 44. Rd8 {[%emt 0:00:05]} Rf5 {[%emt 0:00:03]} 45. Kb6 {[%emt 0:00:05]} Na2 {[%emt 0:00:03]} 46. d6 {[%emt 0:00:06]} Nc3 {[%emt 0:00:03]} 47. d7 {[%emt 0: 00:07]} Rb5+ {[%emt 0:00:02]} 48. Kc7 {[%emt 0:00:01]} Nd5+ {[%emt 0:00:14]} 49. Kd6 {[%emt 0:00:02]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "9.4"] [White "Yoo, Christopher Woojin"] [Black "Lei, Tingjie"] [Result "1-0"] [ECO "D38"] [WhiteElo "2455"] [BlackElo "2505"] [Annotator "Shahid"] [PlyCount "51"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,51,21,21,21,29,26,12,20,17,36,16,-7,3,3,51,-31,10,31,54,61,11,15,56, 76,76,67,32,21,16,34,11,119,143,156,130,127,126,231,236,349,359,284,281,281, 320,320,320,858,887,887,889,29995,29996]} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0: 00:00]} 2. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:00]} e6 { [%emt 0:00:01]} 4. Nc3 {[%emt 0:00:02]} Bb4 {[%emt 0:00:08]} 5. Qb3 {[%emt 0: 00:07]} c5 {[%emt 0:00:17]} 6. Bg5 {[%emt 0:00:04]} Qa5 {[%emt 0:00:04]} 7. Bxf6 {[%emt 0:01:11]} dxc4 {[%emt 0:00:03]} 8. Qxc4 {[%emt 0:00:11]} gxf6 { [%emt 0:00:02]} 9. dxc5 {[%emt 0:00:47]} Bd7 {[%emt 0:02:51]} 10. Rc1 {[%emt 0: 01:36]} Bxc5 {[%emt 0:01:15]} 11. e3 {[%emt 0:01:17]} Nc6 {[%emt 0:00:05]} 12. Be2 {[%emt 0:00:12]} Qb4 {[%emt 0:01:03]} 13. Qd3 {[%emt 0:01:26]} Ne5 { [%emt 0:01:47]} 14. Nxe5 {[%emt 0:00:24]} fxe5 {[%emt 0:00:02]} 15. Bf3 { [%emt 0:00:27]} f5 {[%emt 0:00:34]} (15... Rd8) (15... Be7) 16. O-O {[%emt 0: 00:46]} e4 {[%emt 0:00:16]} 17. Bh5+ {[%emt 0:00:07]} Ke7 {[%emt 0:00:02]} 18. Nd5+ $1 {[%emt 0:00:13]} exd5 {[%emt 0:00:03]} 19. Qxd5 {[%emt 0:00:02]} Be6 { [%emt 0:00:19]} 20. Qe5 {[%emt 0:00:37]} b6 {[%emt 0:01:10]} 21. Qg7+ {[%emt 0: 00:20]} Kd6 {[%emt 0:00:03]} 22. Rfd1+ {[%emt 0:00:43]} Kc6 {[%emt 0:00:02]} 23. Qe7 {[%emt 0:00:41]} Rac8 {[%emt 0:01:23]} 24. Qxe6+ {[%emt 0:00:07]} Kb7 { [%emt 0:00:03]} 25. Rd7+ {[%emt 0:00:04]} Ka8 {[%emt 0:00:03]} 26. Qd5+ { [%emt 0:00:02]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "9.5"] [White "Shuvalova, Polina"] [Black "Badelka, Olga"] [Result "1-0"] [ECO "B30"] [WhiteElo "2476"] [BlackElo "2433"] [Annotator "Shahid"] [PlyCount "125"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,125,21,20,66,66,50,28,59,32,31,31,41,21,15,16,29,-5,-1,-19,-21,-15, -15,-32,-11,-22,32,10,26,15,19,-3,1,1,1,-5,21,21,26,3,24,25,34,38,45,45,41,0,5, 0,0,8,11,6,28,6,0,5,0,20,43,0,43,36,32,16,45,32,33,60,56,56,58,62,34,28,1,-46, 87,67,111,83,88,117,103,0,170,156,143,157,143,25,143,100,97,97,97,95,90,89,85, 86,86,85,105,70,139,95,116,94,148,128,144,144,145,167,175,184,199,109,137,140, 166,136,140,0,1099,1099]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 { [%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. Bb5 {[%emt 0:00:01]} e6 {[%emt 0:00:00] } 4. Bxc6 {[%emt 0:00:01]} bxc6 {[%emt 0:00:00]} 5. d3 {[%emt 0:00:02]} Ne7 { [%emt 0:00:00]} 6. b3 {[%emt 0:00:06]} f6 {[%emt 0:00:36]} 7. O-O {[%emt 0:00: 40]} e5 {[%emt 0:00:15]} 8. c3 {[%emt 0:00:06]} Ng6 {[%emt 0:00:11]} 9. d4 { [%emt 0:00:12]} cxd4 {[%emt 0:00:18]} 10. cxd4 {[%emt 0:00:03]} Bb4 {[%emt 0: 00:42]} 11. Bd2 {[%emt 0:02:01]} Be7 {[%emt 0:00:22]} 12. Bc3 {[%emt 0:00:10]} d5 {[%emt 0:01:56]} 13. Nbd2 {[%emt 0:00:56]} dxe4 {[%emt 0:00:53]} 14. Nxe4 { [%emt 0:00:03]} f5 {[%emt 0:00:35]} 15. Ng3 {[%emt 0:00:45]} e4 {[%emt 0:00:12] } 16. Ne5 {[%emt 0:00:02]} Nxe5 {[%emt 0:00:38]} 17. dxe5 {[%emt 0:00:02]} O-O {[%emt 0:00:25]} 18. Qe2 {[%emt 0:00:22]} Be6 {[%emt 0:00:01]} 19. Rfd1 { [%emt 0:00:04]} Qc7 {[%emt 0:00:10]} 20. Nh5 {[%emt 0:00:18]} Rad8 {[%emt 0:00: 40]} 21. g3 {[%emt 0:01:04]} Rxd1+ {[%emt 0:01:10]} 22. Rxd1 {[%emt 0:00:02]} Rd8 {[%emt 0:00:03]} 23. Nf4 {[%emt 0:00:29]} Rxd1+ {[%emt 0:00:09]} 24. Qxd1 { [%emt 0:00:00]} Qd7 {[%emt 0:00:02]} 25. Qe2 {[%emt 0:01:00]} Bc5 {[%emt 0:00: 55]} 26. h4 {[%emt 0:00:41]} Kf7 {[%emt 0:00:30]} 27. Qh5+ {[%emt 0:00:09]} Kg8 {[%emt 0:00:02]} 28. Kg2 {[%emt 0:00:31]} g6 {[%emt 0:00:10]} 29. Qe2 {[%emt 0: 00:07]} Kf7 {[%emt 0:00:05]} 30. Nh3 {[%emt 0:00:21]} Be7 {[%emt 0:00:18]} 31. Nf4 {[%emt 0:00:10]} Bc5 {[%emt 0:00:08]} 32. Qe1 {[%emt 0:00:12]} Bf8 { [%emt 0:00:08]} 33. Qe2 {[%emt 0:00:37]} Bh6 {[%emt 0:00:02]} 34. Nxe6 { [%emt 0:00:12]} Qxe6 {[%emt 0:00:02]} 35. Qa6 {[%emt 0:00:03]} Qd7 {[%emt 0:00: 42]} 36. Qa5 {[%emt 0:00:40]} Bf8 {[%emt 0:00:06]} 37. a4 {[%emt 0:00:09]} Be7 {[%emt 0:00:10]} 38. Bd2 {[%emt 0:00:34]} Qd3 $2 {[%emt 0:00:04]} (38... Qd5) 39. Be3 {[%emt 0:00:07]} a6 {[%emt 0:00:21]} 40. Qc7 {[%emt 0:00:04]} Qd5 { [%emt 0:00:01]} 41. Bg5 {[%emt 0:00:09]} e3+ {[%emt 0:00:14]} 42. Kh2 {[%emt 0: 00:05]} Qe6 {[%emt 0:00:02]} (42... exf2 43. Qxe7+ Kg8 44. e6 $18) 43. fxe3 { [%emt 0:00:04]} Kf8 {[%emt 0:00:04]} 44. Qb8+ {[%emt 0:00:03]} Kf7 {[%emt 0:00: 01]} 45. Qb7 {[%emt 0:00:04]} Kf8 {[%emt 0:00:03]} 46. Bxe7+ {[%emt 0:00:09]} Qxe7 {[%emt 0:00:00]} 47. Qc8+ {[%emt 0:00:05]} Kf7 {[%emt 0:00:02]} 48. Qxc6 { [%emt 0:00:02]} Qxe5 {[%emt 0:00:04]} 49. Qb7+ {[%emt 0:00:03]} Kf8 {[%emt 0: 00:13]} 50. Qa8+ {[%emt 0:00:02]} Kg7 {[%emt 0:00:07]} 51. Qxa6 {[%emt 0:00:04] } Qxe3 {[%emt 0:00:06]} 52. Qb7+ {[%emt 0:00:03]} Kg8 {[%emt 0:00:05]} 53. Qc8+ {[%emt 0:00:03]} Kg7 {[%emt 0:00:03]} 54. Qb7+ {[%emt 0:00:05]} Kg8 {[%emt 0: 00:02]} 55. b4 {[%emt 0:00:08]} Qd2+ {[%emt 0:00:03]} 56. Kh3 {[%emt 0:00:02]} Qd1 {[%emt 0:00:17]} 57. a5 {[%emt 0:00:08]} Qf1+ {[%emt 0:00:03]} 58. Qg2 { [%emt 0:00:11]} Qb5 {[%emt 0:00:02]} 59. Qa8+ {[%emt 0:00:04]} Kg7 {[%emt 0:00: 01]} 60. Qa7+ {[%emt 0:00:05]} Kg8 {[%emt 0:00:04]} 61. Qa8+ {[%emt 0:00:07]} Kg7 {[%emt 0:00:01]} 62. a6 {[%emt 0:00:01]} f4 {[%emt 0:00:18]} 63. Qb7+ { [%emt 0:00:04]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "9.6"] [White "Bjerre, Jonas Buhl"] [Black "Nihal Sarin"] [Result "0-1"] [ECO "A41"] [WhiteElo "2550"] [BlackElo "2620"] [Annotator "Shahid"] [PlyCount "80"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,80,36,38,40,58,64,63,29,57,48,54,-3,-3,0,0,-2,8,-14,-17,-43,-25,-31, -29,-33,-32,-102,-97,-102,-104,-95,-85,-80,-79,-110,-112,-180,-99,-98,-95,-93, -96,-89,-92,-96,-95,-105,-101,-96,-97,-111,-111,-124,-124,-140,-134,-140,-140, -140,-140,-140,-133,-152,-133,-139,0,0,0,-139,-133,-460,-460,-29998,-29999]} 1. d4 g6 2. c4 Bg7 3. Nf3 d6 4. Nc3 Nc6 5. g3 Bd7 6. Bg2 {A41:1 d4 d6: Tartakower System and Modern Defence.} Qc8 7. O-O Bh3 8. Qa4 {White is slightly better.} Kf8 {[#]} 9. Be3 $146 ({Predecessor:} 9. Bxh3 Qxh3 10. Qb5 Rb8 11. Be3 a6 12. Qb3 Nh6 13. Nd5 Qd7 14. Rfd1 Nf5 15. c5 {0-1 (58) Pau Plana, A (2065) -Fernandez Serrano,P (1991) Barcelona 2018}) 9... h5 10. Ne4 ({White should play} 10. Bxh3 $14 Qxh3 11. Rad1) 10... Bxg2 $11 11. Kxg2 h4 $1 12. Neg5 Nh6 13. Nxh4 Nxd4 14. Qd1 (14. Bxd4 Bxd4 15. Qc2) 14... Ndf5 15. Nxf5 Nxf5 16. Bc1 Bf6 17. e4 {[#]} (17. Qd3 $15) 17... Nxg3 $1 $17 {[%mdl 512]} 18. hxg3 { Threatens to win with Rh1.} Bxg5 19. Rh1 (19. Bxg5 Qh3+ 20. Kf3 Qh5+) 19... Bf6 20. Rxh8+ Bxh8 21. Qh1 {[%CAl Rh1h8]} Kg8 22. Qh4 (22. Qd1 $17 {was necessary.} ) 22... Bf6 ({Black should try} 22... Qe6 $19 23. Bg5 Bxb2) 23. Bg5 Bxg5 24. Qxg5 {[%mdl 4096] Endgame KQR-KQR} Qe6 25. Qh4 Qf6 26. Qxf6 exf6 {KR-KR} 27. Rd1 Kf8 28. Kf3 Ke7 29. Rd3 a5 30. Ra3 b6 31. b4 Ke6 32. Ke3 f5 33. exf5+ Kxf5 34. Kd4 {[#]} Ke6 35. Ra4 Kd7 36. Ra3 Ke6 37. Re3+ Kd7 38. Ra3 $1 f5 39. Kd5 $2 {[%mdl 8192] [#]} (39. c5 $17 {is tougher.}) 39... Re8 $1 $19 40. bxa5 (40. b5 $19 Re2 41. Rd3) 40... Re4 {[%csl Gd7][%CAl Rc7c6] Weighted Error Value: White=0.46/Black=0.09} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "9.7"] [White "Gukesh D"] [Black "Mammadzada, Gunay"] [Result "1-0"] [ECO "D02"] [WhiteElo "2578"] [BlackElo "2443"] [Annotator "Shahid"] [PlyCount "115"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,115,21,21,21,24,27,29,29,20,26,3,23,3,5,2,15,10,5,-5,39,-24,1,-11,4, 26,32,44,19,16,13,0,44,24,26,-24,31,-50,-50,-67,-56,-81,-56,-79,-77,-91,-91, -75,-86,-74,-42,-63,-33,-56,-25,-17,52,-21,7,-15,-5,10,22,65,93,55,182,174,244, 122,152,86,77,61,83,65,78,45,384,143,201,140,140,145,146,108,123,119,127,124, 192,205,206,185,185,197,197,197,289,314,467,167,260,258,256,259,251,244,275, 252,270,276,399,405,409,411,415,417]} 1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00] } 2. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:08]} 3. Bf4 {[%emt 0:00:01]} e6 { [%emt 0:00:06]} 4. e3 {[%emt 0:00:03]} Bd6 {[%emt 0:00:23]} 5. Nbd2 {[%emt 0: 00:06]} O-O {[%emt 0:00:13]} 6. c3 {[%emt 0:00:32]} c5 {[%emt 0:00:05]} 7. Bd3 {[%emt 0:00:14]} Nc6 {[%emt 0:00:40]} 8. Bg3 {[%emt 0:00:33]} h6 {[%emt 0:01: 14]} 9. Ne5 {[%emt 0:01:39]} Ne7 {[%emt 0:00:18]} 10. f4 {[%emt 0:00:50]} b6 { [%emt 0:01:54]} 11. Qf3 {[%emt 0:01:15]} Bb7 {[%emt 0:00:19]} 12. Bh4 {[%emt 0: 00:21]} Nf5 {[%emt 0:00:24]} 13. Bxf6 {[%emt 0:00:55]} gxf6 {[%emt 0:02:20]} 14. Ng4 {[%emt 0:00:04]} Kg7 {[%emt 0:00:02]} 15. Qh3 {[%emt 0:01:16]} Rh8 { [%emt 0:00:02]} 16. O-O {[%emt 0:00:19]} h5 {[%emt 0:00:41]} 17. Nf2 {[%emt 0: 00:42]} Nh6 {[%emt 0:01:09]} 18. Nf3 {[%emt 0:00:34]} f5 {[%emt 0:00:09]} 19. Rae1 {[%emt 0:01:22]} Ng4 {[%emt 0:00:18]} 20. Nd1 {[%emt 0:00:22]} Qf6 { [%emt 0:00:22]} 21. Ne5 {[%emt 0:00:03]} Rag8 {[%emt 0:00:25]} 22. Kh1 { [%emt 0:00:01]} Qh6 {[%emt 0:00:12]} 23. Qh4 {[%emt 0:00:17]} f6 {[%emt 0:00: 18]} 24. Nf3 {[%emt 0:00:01]} Kf7 {[%emt 0:00:03]} 25. Re2 {[%emt 0:00:16]} Qg7 {[%emt 0:00:02]} 26. c4 {[%emt 0:00:10]} dxc4 {[%emt 0:00:06]} 27. Bxc4 { [%emt 0:00:01]} Ke7 {[%emt 0:00:11]} 28. Qh3 {[%emt 0:00:07]} Rc8 {[%emt 0:00: 03]} 29. b3 {[%emt 0:00:04]} a6 {[%emt 0:00:02]} 30. a4 {[%emt 0:00:02]} Qf7 $2 {[%emt 0:00:16]} (30... h4) 31. Nc3 {[%emt 0:00:02]} Kd7 {[%emt 0:00:03]} 32. e4 {[%emt 0:00:11]} Kc7 {[%emt 0:00:06]} 33. exf5 {[%emt 0:00:02]} Rcd8 { [%emt 0:00:02]} 34. Bxe6 {[%emt 0:00:03]} Qg7 {[%emt 0:00:02]} 35. Bd5 { [%emt 0:00:05]} Bxf4 {[%emt 0:00:03]} 36. Bxb7 {[%emt 0:00:06]} (36. Nh4) 36... Kxb7 {[%emt 0:00:00]} 37. dxc5 $6 {[%emt 0:00:04]} (37. Nh4) 37... Rd3 { [%emt 0:00:05]} 38. Ne4 {[%emt 0:00:03]} Ne3 $2 {[%emt 0:00:10]} 39. Rfe1 { [%emt 0:00:08]} Qg4 {[%emt 0:00:08]} 40. Nf2 {[%emt 0:00:04]} Qxh3 {[%emt 0:00: 04]} 41. Nxh3 {[%emt 0:00:00]} Bh6 {[%emt 0:00:01]} 42. Nf2 {[%emt 0:00:05]} Rxb3 {[%emt 0:00:01]} 43. c6+ {[%emt 0:00:01]} Kc7 {[%emt 0:00:04]} 44. Ne4 { [%emt 0:00:04]} Rf8 {[%emt 0:00:13]} 45. Nd4 {[%emt 0:00:02]} Rb4 {[%emt 0:00: 06]} 46. Ne6+ {[%emt 0:00:02]} Kxc6 {[%emt 0:00:01]} 47. Nxf8 {[%emt 0:00:00]} Rxe4 {[%emt 0:00:02]} 48. Nh7 {[%emt 0:00:03]} Re5 {[%emt 0:00:08]} 49. Nxf6 { [%emt 0:00:01]} Rxf5 {[%emt 0:00:00]} 50. Ne4 {[%emt 0:00:03]} Re5 {[%emt 0:00: 14]} 51. Rxe3 {[%emt 0:00:19]} Bxe3 {[%emt 0:00:05]} 52. Rxe3 {[%emt 0:00:01]} b5 {[%emt 0:00:10]} 53. axb5+ {[%emt 0:00:01]} axb5 {[%emt 0:00:02]} 54. Kg1 { [%emt 0:00:01]} b4 {[%emt 0:00:01]} 55. Kf2 {[%emt 0:00:01]} b3 {[%emt 0:00:03] } 56. Rc3+ {[%emt 0:00:15]} Kd5 {[%emt 0:00:10]} 57. Nd2 {[%emt 0:00:02]} b2 { [%emt 0:00:14]} 58. Rb3 {[%emt 0:00:01]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "9.8"] [White "Keymer, Vincent"] [Black "Murzin, Volodar"] [Result "0-1"] [ECO "D46"] [WhiteElo "2591"] [BlackElo "2478"] [Annotator "Shahid"] [PlyCount "70"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,70,21,21,24,3,32,31,35,35,51,32,60,34,44,41,32,34,34,34,34,-6,0,0,-7, -10,-21,-12,3,-25,-25,-25,-25,-29,-32,-87,-94,-95,25,-179,-152,-1031,-1056, -1077,-591,-724,-718,-745,-749,-787,-921,-848,-911,-911,-959,-959,-1019,-1057, -1100,-1151,-1167,-1168,-695,-795,-825,-825,-853,-893,-908,-908,-949,-966,-966] } 1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} c6 { [%emt 0:00:00]} 3. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:12]} 4. e3 {[%emt 0:00: 01]} e6 {[%emt 0:00:14]} 5. Bd3 {[%emt 0:00:01]} Bd6 {[%emt 0:00:09]} 6. O-O { [%emt 0:00:19]} O-O {[%emt 0:00:04]} 7. Nc3 {[%emt 0:00:15]} Nbd7 {[%emt 0:00: 14]} 8. e4 {[%emt 0:00:30]} dxc4 {[%emt 0:00:33]} 9. Bxc4 {[%emt 0:00:08]} e5 { [%emt 0:00:02]} 10. h3 {[%emt 0:01:36]} b5 {[%emt 0:01:08]} 11. Bd3 {[%emt 0: 00:17]} Bb7 {[%emt 0:00:11]} 12. dxe5 {[%emt 0:01:36]} Nxe5 {[%emt 0:00:04]} 13. Nxe5 {[%emt 0:00:05]} Bxe5 {[%emt 0:00:00]} 14. f4 {[%emt 0:00:01]} Bd4+ { [%emt 0:00:46]} 15. Kh2 {[%emt 0:00:05]} b4 {[%emt 0:00:31]} 16. Ne2 {[%emt 0: 00:54]} c5 {[%emt 0:00:21]} 17. e5 $4 {[%emt 0:01:44]} (17. Nxd4 Qxd4 18. e5) 17... Ng4+ $19 {[%emt 0:02:13]} 18. Kg3 {[%emt 0:00:01]} Qd5 {[%emt 0:00:10]} 19. Rf3 {[%emt 0:03:04]} Bf2+ {[%emt 0:00:24]} 20. Kxg4 {[%emt 0:00:33]} f5+ { [%emt 0:00:06]} 21. Bxf5 {[%emt 0:00:24]} Qxd1 {[%emt 0:00:09]} 22. Be6+ { [%emt 0:00:01]} Kh8 {[%emt 0:00:02]} 23. Rxf2 {[%emt 0:00:00]} Ba6 {[%emt 0:00: 12]} 24. Kf3 {[%emt 0:00:06]} Rae8 {[%emt 0:00:02]} 25. Bb3 {[%emt 0:00:04]} Qd3+ {[%emt 0:00:03]} 26. Kg4 {[%emt 0:00:06]} Rxe5 {[%emt 0:00:52]} 27. fxe5 { [%emt 0:00:09]} Rxf2 {[%emt 0:00:04]} 28. Nf4 {[%emt 0:00:00]} Qe4 {[%emt 0:00: 19]} 29. Kg3 {[%emt 0:00:11]} Rf1 {[%emt 0:00:04]} 30. e6 {[%emt 0:00:05]} Rxc1 {[%emt 0:00:39]} 31. Rxc1 {[%emt 0:00:02]} Qe3+ {[%emt 0:00:01]} 32. Kg4 { [%emt 0:00:00]} Qxc1 {[%emt 0:00:02]} 33. e7 {[%emt 0:00:00]} Bb5 {[%emt 0:00: 02]} 34. Be6 {[%emt 0:00:17]} Qxb2 {[%emt 0:00:06]} 35. Bc4 {[%emt 0:00:09]} Be8 {[%emt 0:00:10]} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "9.9"] [White "Mendonca, Leon Luke"] [Black "Abdusattorov, Nodirbek"] [Result "1-0"] [ECO "A17"] [WhiteElo "2549"] [BlackElo "2627"] [Annotator "Shahid"] [PlyCount "191"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,191,0,17,0,35,2,32,25,50,50,45,0,9,0,0,-2,-5,-26,15,10,25,21,16,-14, 30,0,0,-16,27,0,0,0,0,0,15,-16,-6,-8,-14,-18,-11,-29,-11,-14,0,0,0,0,0,0,0,0,0, 0,0,0,0,-99,-91,-99,-6,-6,-6,-12,0,0,0,-25,-7,-7,0,0,0,-7,-7,-82,0,0,0,-43,-7, -243,-240,-241,-232,-367,-254,-390,-390,-336,-62,-60,0,0,0,0,64,63,140,148,156, 20,127,18,18,2,8,3,164,164,1340,1334,1069,961,1047,666,6725,5591,10291,8812, 6613,1562,1550,1478,1328,1214,405,7,7,7,7,7,29968,29969,29973,29974,29974, 29975,29975,29976,29975,29976,29976,29977,29977,29978,29979,29980,29977,29973, 29973,29974,29974,29975,29975,29976,29976,29976,29976,29976,29976,29977,29975, 29976,29976,29977,29981,29977,29980,29973,29981,29982,29983,29984,29983,29984, 29986,29987,29988,29989,29991,29989,29996,4818]} 1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. e3 c5 5. cxd5 Nxd5 6. b3 {[#] A17: English Opening: 1...Nf6 with ...Bb4.} Nb4 $146 ({Predecessor:} 6... Be7 7. Bb2 O-O 8. Qc2 Nc6 9. a3 b6 10. h4 f5 11. Nxd5 exd5 12. d4 Be6 13. Rd1 Rc8 14. Ba6 Rc7 15. dxc5 bxc5 16. O-O h6 17. Bc4 Kh8 18. Rd2 Bd6 19. Rfd1 Ne7 20. Be2 Rb7 21. Be5 {1/2-1/2 (21) Roiz,M (2614) -Zanan,E (2482) Israel 2018}) 7. d3 (7. Bb2 {seems wilder.} Be7 8. d4 cxd4 9. Nxd4 O-O 10. Be2) 7... b6 8. a3 {White is slightly better.} N4c6 9. Bb2 Be7 10. Be2 Bb7 11. Ne4 O-O 12. O-O Nd7 13. Qc2 e5 14. Rac1 Rc8 15. Qb1 Re8 16. Rfe1 h6 17. Bf1 Bf8 18. h3 Nf6 19. Nxf6+ Qxf6 20. Nd2 Qg6 21. Bc3 Bd6 22. Ne4 Bb8 23. b4 cxb4 24. axb4 Ne7 25. Ba1 Nf5 26. Rxc8 Rxc8 27. Rc1 Rd8 28. b5 Nh4 29. Qb4 { Hoping for Qe7.} Rd7 30. Ng3 $1 Qg5 31. Qg4 f5 32. Qxg5 hxg5 33. f3 (33. Be2 $11) 33... e4 $17 34. Kf2 {[%CAl Rd3e4]} f4 (34... exd3 $6 35. Rd1 $11) (34... exf3 $17 35. gxf3 f4 36. exf4 (36. Ne4 $2 fxe3+ 37. Ke2 Bf4 $19) 36... Bxf4) 35. Nxe4 $11 fxe3+ 36. Ke1 Nf5 37. Rc4 Bf4 38. g4 Ng3 39. Be2 Rd5 40. Rb4 Rd8 41. Rc4 Bd5 42. Rc2 (42. Rc1 $11 {remains equal.}) 42... Rf8 (42... Bb3 $17 43. Rc1 Rd5) 43. Bd4 Rd8 44. Bb2 Bf7 45. d4 $2 (45. Nxg3 $11 Bxg3+ 46. Kf1) 45... Nxe2 $19 46. Kxe2 Be8 47. Rc6 (47. Nc3 $142) 47... Rd5 (47... Bxc6 48. bxc6 a5) 48. Rc8 (48. Rc3 {was the only defense.}) 48... Kf7 49. Nc3 {Black should prevent Rxe8.} Rxd4 $2 (49... Rxb5 $19 50. Bc1 (50. Nxb5 Bxb5+ 51. Ke1 Bg3+ 52. Kd1 e2+ 53. Kc2 e1=Q 54. Bc1 Qf2+ 55. Kb3 Qxd4 56. f4 gxf4 57. Rc7+ Ke6 58. Bd2 f3 59. Bc3 Qd1+ 60. Kb2 Bxc7 61. h4 Bf4 62. h5 Bc4 63. Bd2 Bxd2 64. Ka3 Qb3#) 50... Rb3 51. Bxe3 Bd7) 50. Bc1 $15 Bd7 (50... Rd7 $15) 51. Bxe3 $11 Rb4 52. Ra8 Rb3 ({Black should try} 52... Bxb5+ $11 53. Nxb5 Rxb5 54. Bxf4 (54. Rxa7+ Kf6 $11) 54... gxf4) 53. Bxf4 $14 gxf4 (53... Rxc3 $14 54. Rxa7 Ke6) 54. Rxa7 { [%mdl 4096] Endgame KRB-KRN} Ke6 55. Kd2 (55. Kd3 $1 $16) 55... Bxb5 (55... Rb2+ $1 $11 {keeps the balance.} 56. Kd3 g5) 56. Nxb5 (56. Kc2 $16 Bc4 57. Rxg7 ) 56... Rxb5 $11 57. Rxg7 {KR-KR} Rb3 58. Ke2 {Threatens to win with h4.} b5 $2 {[#]} (58... Rb2+ $1 $11 59. Kd3 Rb3+ 60. Ke2 (60. Ke4 Rb4+) 60... Rb2+ 61. Kd3 Rb3+ 62. Ke2) 59. h4 $1 $18 Ke5 $2 (59... Rb2+ 60. Kf1 Rb3) 60. h5 Rb2+ 61. Kf1 b4 62. h6 Rh2 63. Rb7 Rxh6 64. Rxb4 Rf6 65. Rb5+ (65. Re4+ $142 Kd5 66. Ke2) 65... Kd4 66. Kf2 Rf8 67. Ra5 Rf7 68. g5 $2 (68. Ra3 $18 Kc4 69. Ke2) 68... Rb7 69. Kg2 {Strongly threatening Kh3.} Rh7 $1 70. Rf5 Ke3 $2 {[%mdl 8192] [#]} ( 70... Rh5 $11) 71. Re5+ $1 {White mates.} Kd3 72. g6 Rg7 73. Re6 Kd4 74. Kh3 Kd5 75. Ra6 Ke5 76. Kg4 Rb7 77. Kg5 Rb3 78. Ra5+ Ke6 79. Kxf4 Kf6 80. Ra6+ Kg7 81. Kg4 Kh6 82. f4 Rb5 83. Rc6 Ra5 84. Re6 Rb5 85. f5 Rb4+ 86. Kf3 Rb3+ 87. Kf4 Rb4+ 88. Re4 Rb5 89. Re8 Rb4+ 90. Ke5 Rb7 91. Kf6 Rb6+ 92. Kf7 Rb7+ 93. Re7 Rb5 94. f6 Rg5 95. Re1 Rg1 96. Rxg1 {Never resign too early! Weighted Error Value: White=0.34/Black=0.35} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "9.10"] [White "Abdumalik, Zhansaya"] [Black "Khademalsharieh, Sarasadat"] [Result "1-0"] [ECO "C78"] [WhiteElo "2472"] [BlackElo "2494"] [Annotator "Shahid"] [PlyCount "111"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,111,21,20,19,19,24,24,22,10,10,10,10,10,10,10,20,-26,-9,-10,-12,-23, -16,-46,-5,-35,-14,-18,-4,-9,3,20,135,135,96,114,109,108,136,91,130,126,126,74, 75,5,4,4,101,11,11,0,0,0,0,9,46,71,82,75,70,92,121,38,29,27,27,23,31,32,72,73, 81,30,53,52,75,-6,12,-1,59,53,74,55,83,118,121,0,0,-116,-35,-48,45,65,78,97, 101,-105,75,-31,-37,-37,595,30,27,-15,-26,-26,53,41,273,329,1328,29986]} 1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00: 00]} 3. Bb5 {[%emt 0:00:00]} a6 {[%emt 0:00:00]} 4. Ba4 {[%emt 0:00:00]} Nf6 { [%emt 0:00:00]} 5. O-O {[%emt 0:00:00]} b5 {[%emt 0:00:00]} 6. Bb3 {[%emt 0:00: 00]} Bc5 {[%emt 0:00:00]} 7. d3 {[%emt 0:00:15]} O-O {[%emt 0:00:15]} 8. c3 { [%emt 0:00:08]} d6 {[%emt 0:00:11]} 9. h3 {[%emt 0:00:05]} h6 {[%emt 0:00:02]} 10. Re1 {[%emt 0:00:08]} Be6 {[%emt 0:00:27]} 11. Bc2 {[%emt 0:00:03]} Bb6 { [%emt 0:00:12]} 12. Nbd2 {[%emt 0:00:03]} Ne7 {[%emt 0:00:10]} 13. Nf1 { [%emt 0:00:05]} Ng6 {[%emt 0:00:04]} 14. Ng3 {[%emt 0:00:05]} d5 {[%emt 0:00: 19]} 15. exd5 {[%emt 0:00:33]} Nxd5 {[%emt 0:00:07]} (15... Qxd5) 16. d4 { [%emt 0:00:28]} c5 {[%emt 0:01:04]} 17. Nxe5 {[%emt 0:00:13]} Nxe5 {[%emt 0:00: 19]} 18. Rxe5 {[%emt 0:00:01]} cxd4 {[%emt 0:00:05]} 19. Qd3 {[%emt 0:00:20]} Nf6 {[%emt 0:00:27]} 20. Nh5 {[%emt 0:01:08]} Re8 {[%emt 0:01:31]} 21. Nxf6+ { [%emt 0:02:37]} (21. Bxh6 Nxh5 (21... gxh6 22. Qg3+ $18) 22. Qh7+ Kf8 23. Bg5) 21... Qxf6 {[%emt 0:00:03]} 22. Qh7+ {[%emt 0:00:01]} Kf8 {[%emt 0:00:01]} 23. Re2 {[%emt 0:00:16]} Rad8 {[%emt 0:01:19]} 24. b3 {[%emt 0:00:16]} (24. cxd4 Rxd4 (24... Bxd4 25. Bd2) 25. Be3) 24... b4 {[%emt 0:01:24]} 25. cxd4 {[%emt 0: 00:05]} Bxd4 {[%emt 0:00:04]} 26. Rb1 {[%emt 0:00:03]} a5 {[%emt 0:00:45]} 27. Bd2 {[%emt 0:00:16]} Ke7 {[%emt 0:00:41]} 28. Rbe1 {[%emt 0:00:25]} Rh8 { [%emt 0:00:11]} 29. Qe4 {[%emt 0:00:13]} Kf8 {[%emt 0:00:03]} 30. Be3 {[%emt 0: 00:50]} Bc3 {[%emt 0:00:35]} 31. Bc5+ {[%emt 0:00:09]} (31. Bb6) 31... Kg8 { [%emt 0:00:02]} 32. Rf1 {[%emt 0:00:34]} g6 {[%emt 0:00:06]} 33. Qb7 {[%emt 0: 00:19]} Rd7 {[%emt 0:00:21]} 34. Qb6 {[%emt 0:00:49]} Rd5 {[%emt 0:00:26]} 35. Be4 {[%emt 0:00:20]} Rg5 {[%emt 0:00:27]} 36. Kh1 {[%emt 0:00:38]} Kh7 { [%emt 0:00:09]} 37. f4 {[%emt 0:00:10]} Rh5 {[%emt 0:00:09]} 38. Kh2 {[%emt 0: 00:28]} Rc8 {[%emt 0:00:06]} 39. Be3 {[%emt 0:00:13]} a4 {[%emt 0:00:06]} 40. bxa4 {[%emt 0:00:13]} Rd8 {[%emt 0:00:32]} 41. Ref2 {[%emt 0:00:14]} Bd4 { [%emt 0:00:16]} 42. Bxd4 {[%emt 0:00:05]} Qxd4 {[%emt 0:00:04]} 43. Qb7 { [%emt 0:00:14]} Rd7 {[%emt 0:00:08]} 44. Qa8 {[%emt 0:00:06]} (44. Qc6) 44... Ra7 {[%emt 0:00:12]} (44... Bc4 $19) 45. Qc6 {[%emt 0:00:05]} Rc5 {[%emt 0:00: 04]} 46. Qb6 {[%emt 0:00:05]} Rxa4 {[%emt 0:00:05]} 47. Bxg6+ {[%emt 0:00:05]} Kg7 {[%emt 0:00:06]} 48. f5 {[%emt 0:00:05]} Bxa2 {[%emt 0:00:04]} 49. Bh5 { [%emt 0:00:08]} Qe5+ {[%emt 0:00:02]} 50. Kh1 {[%emt 0:00:03]} Bd5 $4 {[%emt 0: 00:05]} (50... Qc7) 51. f6+ {[%emt 0:00:06]} (51. Qxc5 $18) 51... Kh7 {[%emt 0: 00:02]} 52. Bd1 {[%emt 0:00:14]} Ra3 {[%emt 0:00:02]} 53. Bg4 {[%emt 0:00:09]} Be4 {[%emt 0:00:22]} 54. Qxb4 {[%emt 0:00:06]} Rcc3 {[%emt 0:00:02]} 55. Kg1 { [%emt 0:00:04]} Bg6 {[%emt 0:00:11]} 56. Qf8 {[%emt 0:00:02]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "10.1"] [White "Zhu, Jiner"] [Black "Khademalsharieh, Sarasadat"] [Result "1-0"] [ECO "C29"] [WhiteElo "2459"] [BlackElo "2494"] [Annotator "Shahid"] [PlyCount "45"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,45,21,19,19,24,24,3,3,-37,-24,-29,-11,18,5,-2,32,26,30,29,50,48,54,46, 49,41,51,27,27,27,2,-21,-27,-13,-13,-19,-34,-50,-54,-118,176,182,164,189,318, 286,529,595]} 1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nc3 {[%emt 0:00:00] } Nf6 {[%emt 0:00:00]} 3. f4 {[%emt 0:00:00]} d5 {[%emt 0:00:04]} 4. fxe5 { [%emt 0:00:00]} Nxe4 {[%emt 0:00:01]} 5. Qf3 {[%emt 0:00:01]} Nxc3 {[%emt 0:00: 15]} 6. bxc3 {[%emt 0:00:01]} Be7 {[%emt 0:00:03]} 7. d4 {[%emt 0:00:14]} O-O { [%emt 0:00:20]} 8. Bd3 {[%emt 0:00:01]} c5 {[%emt 0:00:11]} 9. Ne2 {[%emt 0:00: 21]} c4 {[%emt 0:00:18]} 10. Bf5 {[%emt 0:00:01]} Bxf5 {[%emt 0:00:28]} 11. Qxf5 {[%emt 0:00:02]} f6 {[%emt 0:00:01]} 12. O-O {[%emt 0:01:15]} fxe5 { [%emt 0:00:27]} 13. Qe6+ {[%emt 0:00:03]} Kh8 {[%emt 0:00:02]} 14. Rxf8+ { [%emt 0:00:20]} Bxf8 {[%emt 0:00:04]} 15. dxe5 {[%emt 0:02:11]} Bc5+ {[%emt 0: 00:40]} 16. Kh1 {[%emt 0:00:16]} Nc6 {[%emt 0:00:06]} 17. Bf4 {[%emt 0:00:12]} Qg8 {[%emt 0:02:39]} 18. Qd7 {[%emt 0:00:35]} Re8 {[%emt 0:00:16]} 19. Ng3 $2 { [%emt 0:02:53]} (19. Re1) 19... Nxe5 $4 {[%emt 0:00:50]} (19... Re7) 20. Bxe5 $18 {[%emt 0:00:04]} Rxe5 {[%emt 0:00:01]} 21. Qc7 {[%emt 0:00:09]} Re3 { [%emt 0:00:42]} 22. Qxc5 {[%emt 0:00:05]} Rxc3 {[%emt 0:00:25]} 23. Rf1 { [%emt 0:00:09]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "10.2"] [White "Abdusattorov, Nodirbek"] [Black "Abdumalik, Zhansaya"] [Result "1-0"] [ECO "C55"] [WhiteElo "2627"] [BlackElo "2472"] [Annotator "TA"] [PlyCount "119"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,119,38,40,41,31,35,27,18,-2,25,5,29,4,7,-39,79,79,69,59,70,65,128, 122,135,89,78,87,108,113,101,83,88,76,90,73,99,85,101,86,113,90,111,117,98,90, 73,106,93,0,104,80,72,67,94,43,81,79,131,123,129,19,94,64,140,123,182,152,270, 268,329,322,321,327,297,274,245,212,310,291,310,310,272,204,446,428,591,562, 594,588,573,571,815,717,1005,1029,954,1025,1024,995,1029,1096,1955,1926,1813, 1489,5804,6000,2848,2677,29979,1137]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O d6 6. a4 {[%CAl Ba2a4,Ba4a5][%mdl 32]} O-O {C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack.} 7. a5 a6 8. c3 Be6 {White has an edge.} 9. Nbd2 d5 10. exd5 {[#]} Nxd5 $146 ({Predecessor:} 10... Bxd5 11. Re1 Bxc4 12. Nxc4 e4 13. dxe4 Qxd1 14. Rxd1 Nxe4 15. Be3 Rad8 16. Nd4 Nxd4 17. Bxd4 Bc5 { 1/2-1/2 (17) Izrailev,A (2261)-Hermann,M (2320) Germany 2014}) 11. Re1 Nf4 12. Bxe6 Nxe6 {[#]} (12... fxe6 $15 {stays ahead.} 13. Ne4 Nxd3) 13. Nc4 $1 $16 Bd6 14. Nfxe5 Nxe5 15. Nxe5 Qh4 (15... Bxe5 $14 16. Rxe5 Qd6) 16. g3 Qh3 17. Qg4 Qxg4 18. Nxg4 c5 19. f4 h5 20. Nf2 g6 21. Kg2 Rfd8 22. Kf3 Kg7 23. Be3 Rac8 24. Ra4 Bf8 25. Rc4 f5 26. Ra1 Kf7 27. Ra3 Rd7 28. Rb3 Nd8 29. Ra3 (29. Rb6 $16) 29... Rcc7 (29... Ne6 $11 {remains equal.}) 30. Ke2 Rc6 31. Kd2 Ke8 32. Rb3 ( 32. h4 $16) 32... Nf7 33. Ke2 Re6 ({Black should play} 33... Re7) 34. Kf3 Rc7 35. Ra4 (35. Rb6 $16 Rec6 36. d4) 35... Kd7 (35... Nd8 $1 $11 {keeps the balance.}) 36. Nh3 {White leaves nothing to chance now.} Nd6 (36... Be7 $14) 37. Rb6 c4 (37... Nf7 $16) 38. Nf2 Re8 (38... Be7 $16 39. Bd4 g5) 39. Bd4 $18 cxd3 40. Nxd3 Kc8 41. Ne5 Re6 42. c4 {Hoping for c5.} Re8 43. b3 g5 (43... Rd8 $142 44. Be3 (44. Nxg6 Ne4 $18) 44... Bg7 45. Nxg6 Ne4) 44. fxg5 Ne4 45. Kf4 Bg7 46. Kxf5 Nc5 (46... Nxg5 47. Kxg5 Bxe5) 47. Ra3 Nd7 {[%CAl Rd7e5]} 48. Re6 {[%CAl Re6e8]} Rf8+ 49. Kg6 {[%mdl 64] [#] Double Attack} Bxe5 50. Bxe5 Rc6 51. Bd6 Rd8 52. Kf7 Nc5 53. Bxc5 Rxc5 {[%mdl 4096] Endgame KRR-KRR} 54. g6 Rg5 55. Ra2 Rd7+ 56. Kf6 Rg4 57. Rae2 Rd3 58. Re8+ Kc7 59. R2e7+ Kc6 60. Rc8+ { Weighted Error Value: White=0.19/Black=0.36} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "10.3"] [White "Murzin, Volodar"] [Black "Mendonca, Leon Luke"] [Result "1-0"] [ECO "B53"] [WhiteElo "2478"] [BlackElo "2549"] [Annotator "Shahid"] [PlyCount "99"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,99,21,24,66,50,83,56,49,50,63,48,59,-12,21,17,17,24,31,8,33,26,30,22, 30,29,29,8,19,22,28,21,21,11,4,8,21,14,17,15,19,5,10,10,12,3,4,9,57,50,55,43, 43,36,31,33,33,37,43,38,42,38,38,44,44,50,46,5,4,4,0,8,20,15,17,12,44,50,31,29, 42,46,93,125,488,212,848,540,618,570,694,714,738,780,966,1013,1013,1014,1014, 1014,1015,1016]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00: 00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:01]} 4. Qxd4 { [%emt 0:00:01]} Nf6 {[%emt 0:00:12]} 5. Be2 {[%emt 0:00:16]} Nc6 {[%emt 0:00: 06]} 6. Qe3 {[%emt 0:00:03]} g6 {[%emt 0:00:12]} 7. O-O {[%emt 0:00:02]} Bg7 { [%emt 0:00:01]} 8. Rd1 {[%emt 0:00:03]} O-O {[%emt 0:00:30]} 9. Nc3 {[%emt 0: 00:06]} Qb6 {[%emt 0:01:14]} 10. Qxb6 {[%emt 0:02:46]} axb6 {[%emt 0:00:00]} 11. Be3 {[%emt 0:00:12]} Nb4 {[%emt 0:02:03]} 12. Rdc1 {[%emt 0:00:28]} Nd7 { [%emt 0:01:24]} 13. Bd4 {[%emt 0:00:31]} Nc5 {[%emt 0:00:16]} 14. a3 {[%emt 0: 00:17]} Nc6 {[%emt 0:00:17]} 15. Bxg7 {[%emt 0:00:03]} Kxg7 {[%emt 0:00:00]} 16. Rd1 {[%emt 0:02:30]} Na4 {[%emt 0:01:00]} 17. Nxa4 {[%emt 0:00:10]} Rxa4 { [%emt 0:00:00]} 18. Nd2 {[%emt 0:00:13]} Be6 {[%emt 0:00:07]} 19. c3 {[%emt 0: 00:07]} Rc8 {[%emt 0:00:18]} 20. Re1 {[%emt 0:00:10]} g5 {[%emt 0:00:26]} 21. f3 {[%emt 0:00:37]} Ne5 {[%emt 0:00:13]} 22. Kf2 {[%emt 0:00:03]} Ra5 {[%emt 0: 00:31]} 23. Rad1 {[%emt 0:00:14]} Bc4 {[%emt 0:00:22]} 24. Nxc4 {[%emt 0:00:34] } Nxc4 {[%emt 0:00:01]} 25. Bxc4 {[%emt 0:00:00]} Rxc4 {[%emt 0:00:01]} 26. Re2 {[%emt 0:00:02]} Kf6 {[%emt 0:00:15]} 27. Ke3 {[%emt 0:00:03]} Rac5 {[%emt 0: 00:20]} 28. Red2 {[%emt 0:00:37]} Rc8 {[%emt 0:00:13]} 29. Rd4 {[%emt 0:00:10]} h5 {[%emt 0:00:19]} 30. Rd5 {[%emt 0:00:36]} R8c5 {[%emt 0:00:12]} 31. R1d4 { [%emt 0:00:15]} Rxd5 {[%emt 0:01:19]} 32. Rxd5 {[%emt 0:00:06]} Rc5 {[%emt 0: 00:03]} 33. Rxc5 {[%emt 0:01:05]} bxc5 $4 {[%emt 0:00:15]} (33... dxc5) 34. a4 $18 {[%emt 0:00:11]} Ke5 {[%emt 0:00:05]} 35. b4 {[%emt 0:00:09]} cxb4 { [%emt 0:00:24]} 36. cxb4 {[%emt 0:00:00]} d5 {[%emt 0:00:01]} 37. a5 {[%emt 0: 00:03]} dxe4 {[%emt 0:00:09]} 38. fxe4 {[%emt 0:00:01]} Kd6 {[%emt 0:00:05]} 39. Kd4 {[%emt 0:00:02]} Kc6 {[%emt 0:00:09]} 40. Kc4 {[%emt 0:00:01]} f6 { [%emt 0:00:10]} 41. b5+ {[%emt 0:00:02]} Kd7 {[%emt 0:00:02]} 42. Kc5 {[%emt 0: 00:07]} e6 {[%emt 0:00:07]} 43. a6 {[%emt 0:00:18]} bxa6 {[%emt 0:00:02]} 44. bxa6 {[%emt 0:00:00]} Kc7 {[%emt 0:00:01]} 45. a7 {[%emt 0:00:01]} Kb7 { [%emt 0:00:01]} 46. Kd6 {[%emt 0:00:01]} f5 {[%emt 0:00:01]} 47. exf5 {[%emt 0: 00:01]} exf5 {[%emt 0:00:00]} 48. Ke5 {[%emt 0:00:01]} f4 {[%emt 0:00:01]} 49. Kf5 {[%emt 0:00:05]} h4 {[%emt 0:00:14]} 50. h3 {[%emt 0:00:01]} 1-0 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "10.4"] [White "Mammadzada, Gunay"] [Black "Keymer, Vincent"] [Result "0-1"] [ECO "B90"] [WhiteElo "2443"] [BlackElo "2591"] [Annotator "ChessBase"] [PlyCount "72"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,72,21,24,44,44,83,63,58,26,30,39,43,55,33,33,33,7,7,-19,-6,5,-6,7,-5, -24,-21,-25,-32,-31,-33,-68,-66,-86,-50,-101,-89,-129,-107,-178,-89,-86,-125, -156,-144,-126,-112,-112,-100,-101,-68,-126,-58,-141,-72,-61,-61,-77,-78,-62, -79,-71,-93,-63,-65,-95,-164,-233,-240,-397,-566,-29983,-29984,-29997,-29998]} 1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0: 00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:00]} a6 {[%emt 0:00:00]} 6. Be3 { [%emt 0:00:01]} e5 {[%emt 0:00:01]} 7. Nb3 {[%emt 0:00:01]} Be7 {[%emt 0:00:01] } 8. Qd2 {[%emt 0:00:02]} Ng4 {[%emt 0:00:02]} 9. g3 {[%emt 0:00:01]} Nd7 { [%emt 0:00:20]} 10. Bh3 {[%emt 0:00:57]} Ndf6 {[%emt 0:00:36]} 11. Bxg4 { [%emt 0:00:04]} Bxg4 {[%emt 0:00:05]} 12. Qd3 {[%emt 0:00:16]} O-O {[%emt 0:00: 28]} 13. h3 {[%emt 0:00:42]} Be6 {[%emt 0:00:08]} 14. O-O-O {[%emt 0:00:10]} b5 {[%emt 0:00:29]} 15. f4 {[%emt 0:00:08]} Bc4 {[%emt 0:01:18]} 16. Qd2 {[%emt 0: 00:04]} a5 {[%emt 0:01:02]} 17. Qg2 {[%emt 0:00:21]} Qc7 {[%emt 0:00:18]} 18. Kb1 {[%emt 0:01:00]} b4 {[%emt 0:00:28]} 19. Nd5 {[%emt 0:00:41]} Nxd5 { [%emt 0:00:50]} 20. exd5 {[%emt 0:00:04]} a4 {[%emt 0:00:00]} 21. Nc1 {[%emt 0: 01:19]} Rfc8 {[%emt 0:01:12]} 22. Rh2 {[%emt 0:02:19]} Bf6 {[%emt 0:01:29]} 23. fxe5 {[%emt 0:00:37]} Bxe5 {[%emt 0:00:03]} 24. Bd4 {[%emt 0:00:03]} Bxd4 { [%emt 0:00:07]} 25. Rxd4 {[%emt 0:00:02]} a3 {[%emt 0:00:03]} 26. b3 {[%emt 0: 00:06]} Be2 {[%emt 0:00:06]} 27. c4 {[%emt 0:00:16]} Bh5 {[%emt 0:00:58]} 28. Qd2 {[%emt 0:00:08]} Qa7 {[%emt 0:00:35]} 29. g4 {[%emt 0:00:29]} Bg6+ { [%emt 0:00:03]} 30. Ka1 {[%emt 0:00:01]} Re8 {[%emt 0:00:01]} 31. Rh1 {[%emt 0: 00:03]} Re5 {[%emt 0:00:32]} 32. Rd1 {[%emt 0:01:37]} Rae8 {[%emt 0:00:32]} 33. Qxb4 {[%emt 0:00:15]} Bc2 {[%emt 0:00:03]} 34. Qxd6 {[%emt 0:00:16]} Bxd1 { [%emt 0:00:11]} 35. Rxd1 {[%emt 0:00:00]} Re1 {[%emt 0:00:07]} 36. Rxe1 { [%emt 0:00:13]} Qd4+ {[%emt 0:00:02]} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "10.5"] [White "Nihal Sarin"] [Black "Gukesh D"] [Result "1/2-1/2"] [ECO "C70"] [WhiteElo "2620"] [BlackElo "2578"] [Annotator "RC"] [PlyCount "90"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,90,21,24,24,24,24,22,35,10,10,-10,43,13,13,34,34,28,28,32,32,25,25,25, 25,47,47,26,63,41,65,65,65,47,70,65,74,63,65,69,70,69,74,77,58,63,70,78,76,77, 81,87,64,72,72,70,62,57,57,57,57,57,57,57,57,57,57,57,57,38,57,57,57,50,78,78, 76,78,76,78,78,75,79,77,80,78,78,78,81,78,78,75,82]} 1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. Bb5 {[%emt 0: 00:02]} a6 {[%emt 0:00:08]} 4. Ba4 {[%emt 0:00:03]} Bc5 {[%emt 0:00:05]} 5. c3 {[%emt 0:00:56]} Nge7 {[%emt 0:00:13]} 6. d4 {[%emt 0:00:14]} exd4 {[%emt 0:00: 19]} 7. cxd4 {[%emt 0:00:00]} Bb4+ {[%emt 0:00:01]} 8. Bd2 {[%emt 0:00:05]} Bxd2+ {[%emt 0:00:08]} 9. Qxd2 {[%emt 0:00:34]} d5 {[%emt 0:00:07]} 10. exd5 { [%emt 0:00:16]} Nxd5 {[%emt 0:00:08]} 11. Bxc6+ {[%emt 0:00:02]} bxc6 {[%emt 0: 00:01]} 12. O-O {[%emt 0:00:01]} O-O {[%emt 0:00:03]} 13. Nc3 {[%emt 0:00:05]} Nxc3 {[%emt 0:00:18]} 14. Qxc3 {[%emt 0:00:00]} Be6 {[%emt 0:00:01]} 15. Ne5 { [%emt 0:01:16]} Bd5 {[%emt 0:00:13]} 16. Nxc6 {[%emt 0:00:05]} Bxc6 {[%emt 0: 00:18]} 17. Qxc6 {[%emt 0:00:00]} Qxd4 {[%emt 0:00:01]} 18. b3 {[%emt 0:00:18]} a5 {[%emt 0:01:44]} 19. Rac1 {[%emt 0:00:46]} a4 {[%emt 0:01:19]} 20. Rc4 { [%emt 0:01:31]} Qb6 {[%emt 0:00:40]} 21. Qxb6 {[%emt 0:00:19]} cxb6 {[%emt 0: 00:02]} 22. bxa4 {[%emt 0:00:37]} Rfd8 {[%emt 0:00:53]} 23. g3 {[%emt 0:00:21]} Rd2 {[%emt 0:01:39]} 24. Rb1 {[%emt 0:00:06]} Rxa2 {[%emt 0:00:17]} 25. Rxb6 { [%emt 0:00:04]} g6 {[%emt 0:00:01]} 26. Rbb4 {[%emt 0:00:07]} h5 {[%emt 0:00: 11]} 27. h4 {[%emt 0:00:03]} Kg7 {[%emt 0:00:04]} 28. Kg2 {[%emt 0:00:01]} Ra7 {[%emt 0:00:02]} 29. Rf4 {[%emt 0:00:02]} Ra3 {[%emt 0:00:11]} 30. Rbc4 { [%emt 0:00:01]} Ra2 {[%emt 0:00:03]} 31. Kf3 {[%emt 0:00:02]} Ra3+ {[%emt 0:00: 02]} 32. Ke2 {[%emt 0:00:07]} Rb7 {[%emt 0:00:23]} 33. Rb4 {[%emt 0:00:24]} Rc7 {[%emt 0:00:09]} 34. Kd2 {[%emt 0:00:28]} Ra1 {[%emt 0:01:37]} 35. Rbc4 { [%emt 0:00:21]} Rb7 {[%emt 0:00:04]} 36. Kc3 {[%emt 0:00:27]} Ra7 {[%emt 0:00: 37]} 37. Kb2 {[%emt 0:00:09]} Re1 {[%emt 0:00:02]} 38. Rc5 {[%emt 0:00:21]} Re2+ {[%emt 0:00:18]} 39. Kb3 {[%emt 0:00:03]} Re1 {[%emt 0:00:04]} 40. Rc2 { [%emt 0:01:53]} Rb7+ {[%emt 0:00:09]} 41. Ka2 {[%emt 0:00:12]} Ra7 {[%emt 0:00: 03]} 42. Rb2 {[%emt 0:00:16]} Rd1 {[%emt 0:00:17]} 43. Rc2 {[%emt 0:00:21]} Re1 {[%emt 0:00:03]} 44. Rb2 {[%emt 0:00:01]} Rd1 {[%emt 0:00:01]} 45. Rc2 { [%emt 0:00:16]} Re1 {[%emt 0:00:02]} 1/2-1/2 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "10.6"] [White "Badelka, Olga"] [Black "Bjerre, Jonas Buhl"] [Result "0-1"] [ECO "E46"] [WhiteElo "2433"] [BlackElo "2550"] [Annotator "ChessBase"] [PlyCount "116"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,99,21,21,27,10,7,-7,20,33,33,9,32,11,49,14,19,-6,12,-2,-5,0,-2,-2,-2, -2,-11,-10,8,-19,-16,2,1,-16,-16,-23,27,14,16,0,5,28,22,33,26,23,32,-22,27,35, 38,-26,28,36,43,47,15,0,-23,-32,-33,-35,-48,-81,7,-2,31,-39,-21,0,-14,-34,-31, -98,-101,-180,-201,-218,-231,-236,-233,-235,-280,-335,-335,-333,-340,-368,-265, -248,-262,-266,-266,-275,-170,-170,-172,-1100,-1191,-1316,-1335,-1387]} 1. d4 { [%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} Bb4 {[%emt 0:00:00]} 4. e3 {[%emt 0:00:00]} O-O { [%emt 0:00:03]} 5. Nge2 {[%emt 0:00:03]} Re8 {[%emt 0:00:13]} 6. a3 {[%emt 0: 00:03]} Bf8 {[%emt 0:00:01]} 7. d5 {[%emt 0:00:01]} a5 {[%emt 0:00:09]} 8. Ng3 {[%emt 0:00:06]} Na6 {[%emt 0:00:11]} 9. Be2 {[%emt 0:00:05]} Nc5 {[%emt 0:00: 05]} 10. e4 {[%emt 0:00:13]} exd5 {[%emt 0:00:23]} 11. exd5 {[%emt 0:00:03]} a4 {[%emt 0:00:15]} 12. Be3 {[%emt 0:01:31]} d6 {[%emt 0:01:17]} 13. O-O {[%emt 0: 00:29]} Bd7 {[%emt 0:00:07]} 14. Qc2 {[%emt 0:00:27]} g6 {[%emt 0:01:15]} 15. Rae1 {[%emt 0:00:05]} Bg7 {[%emt 0:00:04]} 16. Bd1 {[%emt 0:01:29]} h5 { [%emt 0:01:21]} 17. Bg5 {[%emt 0:00:06]} Rxe1 {[%emt 0:00:17]} 18. Rxe1 { [%emt 0:00:01]} Qf8 {[%emt 0:00:01]} 19. h3 {[%emt 0:01:37]} Re8 {[%emt 0:00: 44]} 20. Re2 {[%emt 0:00:10]} Nh7 {[%emt 0:00:18]} 21. Be3 {[%emt 0:00:05]} h4 {[%emt 0:00:19]} 22. Bxc5 {[%emt 0:00:42]} dxc5 {[%emt 0:00:23]} 23. Nge4 { [%emt 0:00:39]} Bd4 {[%emt 0:00:58]} 24. Qd3 {[%emt 0:00:39]} Qh6 {[%emt 0:01: 07]} 25. Nd2 {[%emt 0:00:41]} Qf4 {[%emt 0:00:24]} 26. Rxe8+ {[%emt 0:00:07]} Bxe8 {[%emt 0:00:02]} 27. Nf3 {[%emt 0:00:27]} Bf6 {[%emt 0:00:35]} 28. Bxa4 { [%emt 0:00:22]} Bxc3 {[%emt 0:00:14]} 29. Bxe8 {[%emt 0:00:07]} Bxb2 {[%emt 0: 00:08]} 30. Qe2 {[%emt 0:00:46]} Bf6 {[%emt 0:00:29]} 31. a4 {[%emt 0:00:21]} Nf8 {[%emt 0:00:23]} 32. Bb5 {[%emt 0:00:16]} b6 {[%emt 0:00:09]} 33. Bc6 { [%emt 0:00:03]} Kg7 {[%emt 0:00:07]} 34. Bb5 {[%emt 0:00:03]} Bd4 {[%emt 0:00: 05]} 35. Bc6 {[%emt 0:00:19]} Nh7 {[%emt 0:00:01]} 36. Nxd4 {[%emt 0:00:18]} cxd4 {[%emt 0:00:10]} 37. c5 {[%emt 0:00:14]} Qc1+ {[%emt 0:00:05]} 38. Kh2 { [%emt 0:00:01]} Qxc5 {[%emt 0:00:02]} 39. Qe5+ {[%emt 0:00:02]} Nf6 {[%emt 0: 00:06]} 40. Qxc7 {[%emt 0:00:15]} d3 {[%emt 0:00:14]} 41. d6 {[%emt 0:00:02]} Qe5+ {[%emt 0:00:09]} 42. Kg1 {[%emt 0:00:03]} d2 {[%emt 0:00:21]} 43. Bf3 { [%emt 0:00:01]} Qe1+ {[%emt 0:00:06]} 44. Kh2 {[%emt 0:00:01]} d1=Q {[%emt 0: 00:04]} 45. Bxd1 {[%emt 0:00:02]} Qxd1 {[%emt 0:00:02]} 46. Qxb6 {[%emt 0:00: 06]} Ne4 {[%emt 0:00:03]} 47. Qb2+ {[%emt 0:00:22]} Kh7 {[%emt 0:00:06]} 48. a5 {[%emt 0:00:19]} Qxd6+ {[%emt 0:00:05]} 49. Kg1 {[%emt 0:00:01]} Qd1+ {[%emt 0: 00:04]} 50. Kh2 {[%emt 0:00:01]} Nd2 {[%emt 0:00:12]} 51. g4 {[%emt 0:00:09]} hxg3+ {[%emt 0:00:07]} 52. Kxg3 {[%emt 0:00:02]} Qf3+ {[%emt 0:00:02]} 53. Kh2 {[%emt 0:00:06]} Qxf2+ {[%emt 0:00:02]} 54. Kh1 {[%emt 0:00:01]} Qf1+ {[%emt 0: 00:03]} 55. Kh2 {[%emt 0:00:01]} Qe2+ {[%emt 0:00:09]} 56. Kh1 {[%emt 0:00:03]} Qe4+ {[%emt 0:00:02]} 57. Kh2 {[%emt 0:00:06]} Nc4 {[%emt 0:00:11]} 58. Qc3 { [%emt 0:00:24]} Qe5+ {[%emt 0:00:04]} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "10.7"] [White "Lei, Tingjie"] [Black "Shuvalova, Polina"] [Result "1/2-1/2"] [ECO "C54"] [WhiteElo "2505"] [BlackElo "2476"] [Annotator "ChessBase"] [PlyCount "104"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,104,21,24,24,24,36,31,11,26,26,10,19,19,26,-16,-15,-55,1,-11,-20,-51, -12,-30,-21,-54,-56,-67,-78,-60,-57,-97,-64,-64,-64,-64,-64,-59,-93,-68,-82, -86,-62,-109,-69,-108,-87,-103,-65,-95,-99,-91,-55,-82,-88,-67,-13,-27,-33,-28, 7,24,24,0,0,13,16,23,39,52,89,65,76,51,40,41,83,74,67,76,97,39,37,17,13,9,55, 54,54,47,71,73,73,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 {[%emt 0:00:00]} e5 { [%emt 0:00:00]} 2. Nf3 {[%emt 0:00:02]} Nc6 {[%emt 0:00:00]} 3. Bc4 {[%emt 0: 00:01]} Bc5 {[%emt 0:00:00]} 4. c3 {[%emt 0:00:03]} Nf6 {[%emt 0:00:02]} 5. d3 {[%emt 0:00:01]} d6 {[%emt 0:00:01]} 6. O-O {[%emt 0:00:05]} O-O {[%emt 0:00: 05]} 7. Bd2 {[%emt 0:00:08]} a6 {[%emt 0:00:21]} 8. Bb3 {[%emt 0:00:50]} Re8 { [%emt 0:00:09]} 9. h3 {[%emt 0:00:06]} h6 {[%emt 0:00:02]} 10. Re1 {[%emt 0:00: 02]} Be6 {[%emt 0:00:07]} 11. Bxe6 {[%emt 0:00:20]} Rxe6 {[%emt 0:00:07]} 12. Nh4 {[%emt 0:01:11]} d5 {[%emt 0:00:44]} 13. Nf5 {[%emt 0:00:43]} Ne7 {[%emt 0: 00:35]} 14. Nxe7+ {[%emt 0:00:43]} Qxe7 {[%emt 0:00:11]} 15. Be3 {[%emt 0:02: 16]} Rd8 {[%emt 0:00:14]} 16. Bxc5 {[%emt 0:00:24]} Qxc5 {[%emt 0:00:02]} 17. Nd2 {[%emt 0:00:04]} dxe4 {[%emt 0:01:57]} 18. dxe4 {[%emt 0:02:11]} Red6 { [%emt 0:01:30]} 19. Nb3 {[%emt 0:00:02]} Qc4 {[%emt 0:00:37]} 20. Qc2 {[%emt 0: 00:48]} b6 {[%emt 0:00:32]} 21. Re2 {[%emt 0:00:15]} Qa4 {[%emt 0:00:16]} 22. Rae1 {[%emt 0:00:17]} c5 {[%emt 0:00:15]} 23. c4 {[%emt 0:00:22]} Nh7 {[%emt 0: 00:26]} 24. Nc1 {[%emt 0:00:39]} Qxc2 {[%emt 0:00:17]} 25. Rxc2 {[%emt 0:00:02] } Ng5 {[%emt 0:00:04]} 26. f3 {[%emt 0:00:15]} Ne6 {[%emt 0:00:30]} 27. Ne2 { [%emt 0:00:03]} Rd1 {[%emt 0:01:12]} 28. Rxd1 {[%emt 0:00:08]} Rxd1+ {[%emt 0: 00:02]} 29. Kf2 {[%emt 0:00:01]} g5 {[%emt 0:00:32]} 30. Nc3 {[%emt 0:00:08]} Ra1 {[%emt 0:00:08]} 31. a3 {[%emt 0:00:12]} Nd4 {[%emt 0:00:16]} 32. Rd2 { [%emt 0:00:02]} Rc1 {[%emt 0:00:02]} 33. Na4 {[%emt 0:00:11]} b5 {[%emt 0:00: 13]} 34. Nxc5 {[%emt 0:00:01]} Rxc4 {[%emt 0:00:38]} 35. Nd7 {[%emt 0:00:01]} Nc6 {[%emt 0:00:07]} 36. Nf6+ {[%emt 0:00:04]} Kg7 {[%emt 0:00:02]} 37. Ng4 { [%emt 0:00:01]} h5 {[%emt 0:00:19]} 38. Ne3 {[%emt 0:00:03]} Rc1 {[%emt 0:00: 09]} 39. Nf5+ {[%emt 0:00:01]} Kf8 {[%emt 0:00:22]} 40. Rd7 {[%emt 0:00:03]} Ke8 {[%emt 0:00:05]} 41. Rc7 {[%emt 0:00:07]} Rc2+ {[%emt 0:00:02]} 42. Kf1 { [%emt 0:00:17]} f6 {[%emt 0:00:03]} 43. Ne3 {[%emt 0:00:09]} Rc1+ {[%emt 0:00: 04]} 44. Kf2 {[%emt 0:00:02]} Kd8 {[%emt 0:00:00]} 45. Rf7 {[%emt 0:00:02]} Rb1 {[%emt 0:00:06]} 46. Rxf6 {[%emt 0:00:05]} Rxb2+ {[%emt 0:00:03]} 47. Kf1 { [%emt 0:00:13]} Kd7 {[%emt 0:00:04]} 48. Nd5 {[%emt 0:00:09]} a5 {[%emt 0:00: 09]} 49. Nb6+ {[%emt 0:00:01]} Kc7 {[%emt 0:00:01]} 50. Nd5+ {[%emt 0:00:01]} Kd7 {[%emt 0:00:01]} 51. Nb6+ {[%emt 0:00:02]} Kc7 {[%emt 0:00:01]} 52. Nd5+ { [%emt 0:00:01]} Kd7 {[%emt 0:00:13]} 1/2-1/2 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "10.8"] [White "Yip, Carissa"] [Black "Yoo, Christopher Woojin"] [Result "0-1"] [ECO "B45"] [WhiteElo "2430"] [BlackElo "2455"] [Annotator "Shahid"] [PlyCount "78"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "600+5"] {[%evp 0,78,21,24,44,40,38,48,31,36,36,31,34,26,9,19,19,28,21,5,18,5,14,-43,66, 61,40,40,32,50,50,49,42,23,66,94,68,54,138,94,85,99,99,79,100,81,97,92,84,96, 105,25,25,26,74,-42,48,40,58,-51,-90,-78,-110,-110,0,-70,-63,-163,-168,-348, -341,-320,-137,-137,-112,-387,-387,-610,-861,-29997,-29998]} 1. e4 {[%emt 0:00: 00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. d4 { [%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00: 00]} 5. Nc3 {[%emt 0:00:02]} Nc6 {[%emt 0:00:00]} 6. Nxc6 {[%emt 0:00:11]} bxc6 {[%emt 0:00:03]} 7. e5 {[%emt 0:00:03]} Nd5 {[%emt 0:00:02]} 8. Ne4 {[%emt 0: 00:09]} Qc7 {[%emt 0:00:02]} 9. f4 {[%emt 0:00:02]} Rb8 {[%emt 0:00:02]} 10. Bd3 {[%emt 0:00:35]} Qb6 {[%emt 0:00:26]} 11. c4 {[%emt 0:00:38]} Bb4+ { [%emt 0:02:00]} 12. Ke2 {[%emt 0:00:02]} f5 {[%emt 0:00:03]} 13. exf6 {[%emt 0: 01:52]} Nxf6 {[%emt 0:00:03]} 14. Be3 {[%emt 0:00:17]} Qa5 {[%emt 0:01:12]} 15. Nxf6+ {[%emt 0:01:11]} gxf6 {[%emt 0:00:02]} 16. a3 {[%emt 0:00:09]} Be7 { [%emt 0:01:20]} 17. b4 {[%emt 0:00:26]} Qc7 {[%emt 0:00:02]} (17... Qh5+) 18. Kf2 {[%emt 0:00:08]} O-O {[%emt 0:01:56]} 19. Qg4+ {[%emt 0:02:35]} Kh8 { [%emt 0:00:03]} 20. Qh5 {[%emt 0:00:02]} f5 {[%emt 0:00:04]} 21. g4 {[%emt 0: 01:01]} d5 {[%emt 0:02:01]} 22. gxf5 {[%emt 0:00:40]} (22. cxd5 cxd5 23. g5 $18 ) 22... exf5 {[%emt 0:00:06]} 23. Qh6 {[%emt 0:00:13]} Qd8 {[%emt 0:00:32]} 24. Rhg1 {[%emt 0:00:34]} Bf6 {[%emt 0:00:11]} 25. Rad1 {[%emt 0:00:03]} d4 { [%emt 0:00:38]} 26. Bc1 {[%emt 0:00:19]} Be6 {[%emt 0:00:08]} 27. Rg5 {[%emt 0: 00:25]} Qd7 {[%emt 0:00:43]} 28. Re1 {[%emt 0:00:22]} Rbe8 {[%emt 0:00:13]} 29. Bd2 {[%emt 0:00:07]} Bxg5 {[%emt 0:00:11]} 30. fxg5 {[%emt 0:00:01]} Bf7 { [%emt 0:00:15]} 31. Bf4 {[%emt 0:00:12]} Bg6 {[%emt 0:00:05]} 32. h4 {[%emt 0: 00:08]} Qf7 {[%emt 0:00:04]} 33. Be5+ {[%emt 0:00:06]} Kg8 {[%emt 0:00:02]} 34. Bf6 $2 {[%emt 0:00:10]} (34. c5) 34... Rxe1 {[%emt 0:00:05]} 35. Kxe1 {[%emt 0: 00:01]} Re8+ $19 {[%emt 0:00:06]} 36. Kd2 {[%emt 0:00:01]} f4 {[%emt 0:00:05]} 37. Bf1 {[%emt 0:00:14]} f3 {[%emt 0:00:05]} 38. Kd1 {[%emt 0:00:05]} f2 { [%emt 0:00:03]} 39. c5 {[%emt 0:00:06]} Qb3+ {[%emt 0:00:02]} 0-1 [Event "Polgar Challenge 2021"] [Site "Online"] [Date "2021.04.09"] [Round "10.9"] [White "Praggnanandhaa R"] [Black "Liang, Awonder"] [Result "1/2-1/2"] [ECO "A45"] [WhiteElo "2608"] [BlackElo "2592"] [Annotator "TA"] [PlyCount "100"] [EventDate "2021.04.08"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,100,33,31,16,28,35,27,23,67,72,87,75,96,61,51,56,38,-5,0,-35,-35,-21, -20,-31,0,0,0,0,0,-11,22,0,22,-64,0,0,-17,-87,-94,-102,-96,-146,-81,-161,-170, -316,-279,-497,-514,-508,-509,-445,-505,-491,-501,-484,-454,-502,-537,-718, -685,-719,-695,-629,-450,-499,-473,-570,-551,-582,-571,-582,-582,-629,-108, -108,-95,-102,-108,-103,-72,-80,-80,-80,-80,-80,-80,-80,0,-80,-80,-89,0]} 1. d4 Nf6 2. Bf4 c5 3. e3 g6 4. c3 Bg7 5. dxc5 O-O 6. Nf3 {A45: Trompowsky Attack.} a5 {[#]} 7. Bb5 $146 ({Predecessor:} 7. Nbd2 Na6 8. Bxa6 Rxa6 9. Be5 b6 10. cxb6 d6 11. Bxf6 Bxf6 12. O-O Rxb6 13. Qc2 {1/2-1/2 (56) Tunik,G (2388)-Menac Comas,J (2012) Sabadell 2017}) 7... Na6 8. Qd4 {White has an edge.} Nh5 9. Be5 f6 10. Bg3 e5 11. Qc4+ (11. Qd6 Kh8 (11... Qc7 12. Qxc7 Nxc7 13. Na3) 12. Na3) 11... Kh8 12. Nbd2 b6 13. cxb6 d5 14. Qe2 (14. b7 $5 Bxb7 15. Qe2 $11) 14... Qxb6 15. a4 Nc7 16. c4 dxc4 17. Bxc4 Qxb2 18. O-O Qb4 19. Rfc1 Qe7 20. Rab1 Bd7 21. Bb5 (21. Bh4 $11) 21... Bf5 (21... Nxb5 $15 22. axb5 Nxg3 23. hxg3 Rfc8) 22. e4 Be6 23. Qe3 (23. Bc6 $11 Ra7 24. Qe3) 23... Nxb5 $17 24. Rxb5 Rfb8 25. Rbc5 Rd8 ({Black should play} 25... Qf8 26. Rc7 Bh6) 26. Qc3 (26. h3 $17 { was necessary.}) 26... Rdc8 $19 27. h3 (27. Rxc8+ $142 Rxc8 28. Qb2) 27... Bf8 28. Rc7 {[#]} (28. Rxc8 Rxc8 29. Qa1) 28... Rxc7 29. Qxc7 Rc8 30. Qxc8 Bxc8 31. Rxc8 Kg8 32. Bh2 Qd7 33. Ra8 Qxa4 34. g4 Nf4 35. Bxf4 exf4 36. Kg2 Kf7 37. e5 Be7 38. Ra7 Qb4 39. exf6 Kxf6 40. Ra6+ Kg7 41. Re6 a4 $2 (41... Qb7 $19 { has better winning chances.} 42. Nc4 a4) 42. Re4 $17 Qa3 43. Nb1 Qd6 44. Rxa4 h5 {White must now prevent ...hxg4.} 45. gxh5 gxh5 {[#] aiming for ... Qg6+.} 46. Nbd2 Qg6+ 47. Kf1 Qf5 48. Kg2 Qg6+ 49. Kf1 $1 Qd3+ 50. Kg2 Qg6+ {Weighted Error Value: White=0.30/Black=0.31} ({Better is} 50... Qd6 $17 51. Rc4 Qg6+ 52. Kh2 Qd3) 1/2-1/2