Event: Round 4: Nikolaj Petrov - Wieslaw Maroszczyk
Date: 2023-07-04
White: Nikolaj Petrov
Black: Wieslaw Maroszczyk
Result: 0-1
ECO: B40
Opening: Sicilian Defense: Kramnik Variation
Variant: Standard

1. e4 { [%eval 0.36] [%clk 1:30:58] } 1... c5 { [%eval 0.32] [%clk 1:30:48] } 2. Nf3 { [%eval 0.0] [%clk 1:31:21] } 2... e6 { [%eval 0.34] [%clk 1:31:10] } 3. c4 { [%eval 0.0] [%clk 1:31:27] } 3... Nc6 { [%eval 0.1] [%clk 1:31:20] } 4. Nc3 { [%eval -0.05] [%clk 1:31:51] } 4... Be7?! { [%eval 0.9] } { Inaccuracy. Nd4 was best. } { [%clk 1:30:40] } 5. d4 { [%eval 0.05] [%clk 1:31:57] } 5... cxd4 { [%eval 0.47] [%clk 1:30:49] } 6. Nxd4 { [%eval 0.21] [%clk 1:32:25] } 6... Nf6 { [%eval 0.5] [%clk 1:29:43] } 7. Be2 { [%eval 0.13] [%clk 1:32:18] } 7... O-O { [%eval 0.2] [%clk 1:29:18] } 8. O-O { [%eval 0.19] } 8... a6?! { [%eval 0.83] } { Inaccuracy. d5 was best. } 9. Be3 { [%eval 0.5] [%clk 1:29:06] } 9... Qc7 { [%eval 0.9] [%clk 1:27:57] } 10. Rc1 { [%eval 0.93] [%clk 1:29:21] } 10... d6 { [%eval 0.85] [%clk 1:27:01] } 11. f4 { [%eval 0.93] [%clk 1:28:20] } 11... Bd7 { [%eval 1.13] [%clk 1:22:34] } 12. Nf3? { [%eval -0.01] } { Mistake. Nb3 was best. } { [%clk 1:26:57] } 12... Ng4 { [%eval 0.05] [%clk 1:22:18] } 13. Bd2? { [%eval -1.48] } { Mistake. Qd2 was best. } { [%clk 1:26:56] } 13... Qb6+ { [%eval -1.39] [%clk 1:20:44] } 14. Kh1 { [%eval -1.34] [%clk 1:23:43] } 14... Nf2+ { [%eval -1.35] } 15. Rxf2 { [%eval -1.31] } 15... Qxf2 { [%eval -1.34] [%clk 1:20:31] } 16. Qb3?! { [%eval -2.12] } { Inaccuracy. a3 was best. } { [%clk 1:23:19] } 16... Qa7?! { [%eval -1.42] } { Inaccuracy. b5 was best. } { [%clk 1:17:53] } 17. Na4?? { [%eval -3.44] } { Blunder. Qd1 was best. } { [%clk 1:21:25] } 17... Nd4 { [%eval -2.98] [%clk 1:12:18] } 18. Nxd4 { [%eval -2.8] [%clk 1:21:41] } 18... Bxa4?! { [%eval -1.7] } { Inaccuracy. Qxd4 was best. } { [%clk 1:12:30] } 19. Qc3 { [%eval -2.02] [%clk 1:20:35] } 19... Rac8 { [%eval -2.1] [%clk 1:06:23] } 20. Be3 { [%eval -2.19] [%clk 1:18:15] } 20... Qb8 { [%eval -2.03] [%clk 1:03:57] } 21. b3 { [%eval -2.21] [%clk 1:18:08] } 21... Bd7 { [%eval -2.26] [%clk 1:03:38] } 22. Rf1 { [%eval -2.8] [%clk 1:17:34] } 22... Bf6 { [%eval -2.37] [%clk 0:58:21] } 23. Qd2 { [%eval -2.39] [%clk 1:17:48] } 23... Rce8?! { [%eval -1.67] } { Inaccuracy. b5 was best. } { [%clk 0:52:18] } 24. Nf3 { [%eval -2.21] [%clk 1:17:46] } 24... Bc6 { [%eval -2.19] [%clk 0:51:17] } 25. Bd3 { [%eval -2.02] [%clk 1:17:19] } 25... Qc7 { [%eval -1.55] [%clk 0:48:08] } 26. Qc2 { [%eval -1.83] [%clk 1:17:34] } 26... h6 { [%eval -1.64] [%clk 0:45:05] } 27. Nd2 { [%eval -2.18] [%clk 1:15:54] } 27... Rc8 { [%eval -2.32] [%clk 0:43:41] } 28. Rf3 { [%eval -2.21] [%clk 1:16:18] } 28... b5 { [%eval -2.36] [%clk 0:37:13] } 29. Rg3 { [%eval -2.58] [%clk 1:16:05] } 29... bxc4 { [%eval -2.36] [%clk 0:34:39] } 30. Nxc4?! { [%eval -3.51] } { Inaccuracy. bxc4 was best. } { [%clk 1:15:43] } 30... Kh8?! { [%eval -2.53] } { Inaccuracy. d5 was best. } { [%clk 0:30:49] } 31. Qd2?! { [%eval -3.26] } { Inaccuracy. Bb6 was best. } { [%clk 1:11:22] } 31... d5 { [%eval -2.76] [%clk 0:16:18] } 32. e5?! { [%eval -3.72] } { Inaccuracy. exd5 was best. } { [%clk 1:10:13] } 32... Bh4 { [%eval -3.68] [%clk 0:11:19] } 33. Nd6 { [%eval -3.66] [%clk 1:10:14] } 33... Bxg3 { [%eval -3.78] [%clk 0:11:20] } 34. hxg3 { [%eval -3.51] [%clk 1:10:10] } 34... Bb5 { [%eval -3.5] [%clk 0:10:03] } 35. Nxb5 { [%eval -3.86] [%clk 1:09:53] } 35... axb5 { [%eval -3.72] [%clk 0:10:32] } 36. f5?! { [%eval -4.9] } { Inaccuracy. Kh2 was best. } { [%clk 1:10:13] } 36... Qc3 { [%eval -4.7] [%clk 0:10:34] } 37. Qe2 { [%eval -5.2] [%clk 1:09:47] } 37... Qxe5 { [%eval -5.35] [%clk 0:10:36] } 38. Qf2 { [%eval -5.37] [%clk 1:09:47] } 38... d4 { [%eval -5.13] [%clk 0:08:20] } 39. Bf4 { [%eval -5.02] [%clk 1:07:39] } 39... Qf6 { [%eval -5.14] [%clk 0:06:17] } 40. g4 { [%eval -5.54] [%clk 1:07:34] } 40... e5 { [%eval -5.3] [%clk 0:05:26] } 41. Bd2 { [%eval -5.46] [%clk 1:05:43] } 41... Ra8 { [%eval -4.99] [%clk 0:02:19] } 42. Qg3 { [%eval -5.09] [%clk 1:03:31] } 42... g5 { [%eval -4.26] [%clk 0:07:42] } 43. fxg6 { [%eval -4.41] } 43... fxg6 { [%eval -4.6] } 44. Bxh6 { [%eval -4.88] [%clk 1:16:15] } 44... Rf7 { [%eval -4.73] [%clk 0:07:12] } 45. a4 { [%eval -5.63] [%clk 1:15:43] } 45... Rh7 { [%eval -4.68] [%clk 0:07:01] } 46. g5 { [%eval -5.08] [%clk 1:16:01] } 46... Qf4 { [%eval -4.71] [%clk 0:06:32] } 47. Qxf4 { [%eval -4.91] } 47... exf4 { [%eval -4.89] } 48. Bxg6 { [%eval -5.57] } 48... Rxh6+ { [%eval -5.23] } 49. gxh6 { [%eval -5.16] [%clk 1:11:03] } 49... bxa4 { [%eval -5.35] [%clk 0:06:38] } 50. bxa4 { [%eval -4.9] [%clk 1:11:25] } 50... Rxa4 { [%eval -5.22] [%clk 0:07:05] } 51. Bd3 { [%eval -6.0] [%clk 1:11:29] } 51... Ra3 { [%eval -5.39] [%clk 0:07:25] } 52. Be2?! { [%eval -10.26] } { Inaccuracy. Bf5 was best. } { [%clk 1:11:21] } 52... d3 { [%eval -11.06] [%clk 0:07:51] } 53. Bd1?! { [%eval #-26] } { Checkmate is now unavoidable. Bg4 was best. } { [%clk 1:11:38] } 53... Ra1 { [%eval #-23] [%clk 0:08:18] } 0-1