Event: Round 1: Boris Kantsler - Benny Aizenberg
Date: 2021-11-29
White: Boris Kantsler
WhiteTitle: GM
Black: Benny Aizenberg
BlackTitle: FM
Result: 1-0
ECO: A81
Opening: Dutch Defense: Semi-Leningrad Variation
Variant: Standard

1. d4 { [%eval 0.0] [%clk 1:30:54] } 1... f5?! { [%eval 0.62] } { Inaccuracy. e6 was best. } { [%clk 1:30:58] } 2. g3 { [%eval 0.55] [%clk 1:31:08] } 2... Nf6 { [%eval 0.67] [%clk 1:31:27] } 3. Bg2 { [%eval 0.58] [%clk 1:31:33] } 3... g6 { [%eval 0.53] [%clk 1:31:56] } 4. Nf3 { [%eval 0.63] [%clk 1:31:50] } 4... Bg7 { [%eval 0.58] [%clk 1:32:24] } 5. O-O { [%eval 0.43] [%clk 1:32:12] } 5... O-O { [%eval 0.56] [%clk 1:32:49] } 6. b3 { [%eval 0.54] [%clk 1:32:40] } 6... d6 { [%eval 0.63] [%clk 1:33:10] } 7. Bb2 { [%eval 0.57] [%clk 1:33:04] } 7... c6 { [%eval 0.69] [%clk 1:33:25] } 8. Nbd2 { [%eval 0.68] [%clk 1:32:34] } 8... a5 { [%eval 0.62] [%clk 1:33:51] } 9. a3 { [%eval 0.58] [%clk 1:32:31] } 9... Na6 { [%eval 0.84] [%clk 1:33:42] } 10. Re1 { [%eval 0.73] [%clk 1:31:25] } 10... Qc7?! { [%eval 1.26] } { Inaccuracy. Ne4 was best. } { [%clk 1:31:10] } 11. e4 { [%eval 1.13] [%clk 1:29:36] } 11... fxe4 { [%eval 1.23] [%clk 1:31:36] } 12. Nxe4 { [%eval 1.36] [%clk 1:30:02] } 12... Nxe4 { [%eval 1.18] [%clk 1:32:01] } 13. Rxe4 { [%eval 1.44] [%clk 1:30:27] } 13... Bf5 { [%eval 1.31] [%clk 1:32:26] } 14. Re3 { [%eval 1.34] [%clk 1:30:34] } 14... Bh6 { [%eval 1.47] [%clk 1:26:37] } 15. Re1 { [%eval 1.28] [%clk 1:29:40] } 15... Rf7?! { [%eval 1.97] } { Inaccuracy. Rae8 was best. } { [%clk 1:20:39] } 16. Nh4?! { [%eval 0.99] } { Inaccuracy. Bc1 was best. } { [%clk 1:15:17] } 16... Bd7 { [%eval 0.87] [%clk 1:18:02] } 17. f4 { [%eval 0.75] [%clk 1:14:07] } 17... Raf8 { [%eval 1.07] [%clk 1:10:32] } 18. Qd2?! { [%eval 0.3] } { Inaccuracy. c4 was best. } { [%clk 1:07:54] } 18... a4? { [%eval 1.37] } { Mistake. Qb6 was best. } { [%clk 1:02:21] } 19. b4?! { [%eval 0.35] } { Inaccuracy. bxa4 was best. } { [%clk 1:03:51] } 19... Qc8?! { [%eval 1.26] } { Inaccuracy. b5 was best. } { [%clk 0:59:46] } 20. Rf1?? { [%eval -0.36] } { Blunder. d5 was best. } { [%clk 0:51:02] } 20... Bh3?! { [%eval 0.49] } { Inaccuracy. Be6 was best. } { [%clk 0:55:17] } 21. Rae1?! { [%eval -0.16] } { Inaccuracy. c4 was best. } { [%clk 0:51:21] } 21... Nc7 { [%eval -0.07] [%clk 0:53:12] } 22. c4 { [%eval -0.28] } 22... Qg4? { [%eval 0.94] } { Mistake. Bxg2 was best. } 23. Qd1? { [%eval -0.47] } { Mistake. d5 was best. } 23... g5 { [%eval -0.49] [%clk 0:34:53] } 24. Qxg4 { [%eval -0.38] [%clk 0:39:26] } 24... Bxg4 { [%eval -0.32] [%clk 0:35:21] } 25. fxg5 { [%eval -0.71] [%clk 0:39:47] } 25... Bxg5 { [%eval -0.53] [%clk 0:34:05] } 26. Rxf7 { [%eval -0.66] [%clk 0:35:00] } 26... Rxf7 { [%eval -1.2] [%clk 0:34:25] } 27. b5?! { [%eval -2.27] } { Inaccuracy. Re4 was best. } { [%clk 0:27:28] } 27... cxb5 { [%eval -2.08] [%clk 0:31:28] } 28. cxb5 { [%eval -2.64] [%clk 0:25:58] } 28... Nxb5?? { [%eval -0.57] } { Blunder. Bd2 was best. } { [%clk 0:23:07] } 29. Bxb7 { [%eval -0.46] [%clk 0:18:28] } 29... Bd2 { [%eval 0.0] [%clk 0:15:45] } 30. Re4 { [%eval 0.07] [%clk 0:16:31] } 30... Rg7?! { [%eval 0.89] } { Inaccuracy. h5 was best. } { [%clk 0:12:56] } 31. d5 { [%eval 1.04] [%clk 0:10:54] } 31... Nc3? { [%eval 2.47] } { Mistake. Bc3 was best. } { [%clk 0:06:59] } 32. Bxc3?? { [%eval 0.65] } { Blunder. Rc4 was best. } { [%clk 0:11:13] } 32... Bxc3 { [%eval 0.56] [%clk 0:07:28] } 33. Rxa4 { [%eval 0.47] [%clk 0:11:37] } 33... e5 { [%eval 0.49] [%clk 0:07:18] } 34. dxe6 { [%eval 0.37] [%clk 0:07:48] } 34... Bxe6 { [%eval 0.37] [%clk 0:07:41] } 35. Be4 { [%eval 0.4] [%clk 0:06:42] } 35... Rf7 { [%eval 0.35] [%clk 0:06:10] } 36. Kg2 { [%eval 0.37] [%clk 0:06:20] } 36... d5 { [%eval 0.44] [%clk 0:05:10] } 37. Ra6 { [%eval 0.42] [%clk 0:05:25] } 37... dxe4 { [%eval 0.33] [%clk 0:05:14] } 38. Rxe6 { [%eval 0.4] [%clk 0:05:50] } 38... Ra7 { [%eval 0.34] [%clk 0:05:40] } 39. Rxe4 { [%eval 0.42] [%clk 0:05:48] } 39... Rxa3 { [%eval 0.37] [%clk 0:06:09] } 40. Kh3 { [%eval 0.31] [%clk 0:05:06] } 40... Bf6 { [%eval 0.33] [%clk 0:05:55] } 41. Nf5 { [%eval 0.32] [%clk 0:05:06] } 41... Kf7 { [%eval 0.32] [%clk 0:05:20] } 42. Nd6+ { [%eval 0.59] [%clk 0:04:36] } 42... Kg6 { [%eval 0.79] [%clk 0:05:13] } 43. Re6 { [%eval 0.5] [%clk 0:02:40] } 43... h5?? { [%eval 4.4] } { Blunder. Ra6 was best. } { [%clk 0:26:33] } 44. Ne8 { [%eval 4.42] [%clk 0:26:07] } 44... Rf3 { [%eval 4.28] [%clk 0:26:43] } 45. Kg2 { [%eval 4.72] [%clk 0:26:25] } 45... Rf5 { [%eval 4.65] [%clk 0:27:11] } 46. Ra6 { [%eval 4.9] [%clk 0:26:40] } 46... Kg5 { [%eval 5.0] [%clk 0:24:11] } 47. Nd6 { [%eval 4.93] [%clk 0:25:20] } 47... Re5 { [%eval 6.31] [%clk 0:20:24] } 48. Nf7+ { [%eval 6.62] [%clk 0:25:42] } 48... Kf5 { [%eval 6.83] [%clk 0:20:52] } 49. Nxe5 { [%eval 6.78] [%clk 0:26:00] } 49... Bxe5 { [%eval 8.38] [%clk 0:21:20] } 50. Ra5 { [%eval 7.97] [%clk 0:25:52] } 50... Kf6 { [%eval 8.37] [%clk 0:21:36] } 51. Kh3 { [%eval 8.42] [%clk 0:26:05] } 1-0