Event: Riga, Latvia
Site: Riga, Latvia
Date: 2021-10-27
White: Donchenko Alexander  (GER)
WhiteElo: 2648
Black: Bjerre Jonas Buhl  (DEN)
BlackElo: 2569
Result: 1/2-1/2
ECO: B94
Opening: Sicilian Defense: Najdorf Variation
Variant: Standard

1. e4 { [%eval 0.24] [%clk 1:40:57] } 1... c5 { [%eval 0.32] [%clk 1:40:46] } 2. Nf3 { [%eval 0.0] [%clk 1:41:20] } 2... d6 { [%eval 0.0] [%clk 1:41:04] } 3. d4 { [%eval 0.15] [%clk 1:41:38] } 3... cxd4 { [%eval 0.13] [%clk 1:41:26] } 4. Nxd4 { [%eval 0.0] [%clk 1:42:03] } 4... Nf6 { [%eval 0.14] [%clk 1:41:49] } 5. Nc3 { [%eval 0.18] [%clk 1:42:27] } 5... a6 { [%eval 0.21] [%clk 1:42:15] } 6. Bg5 { [%eval 0.0] [%clk 1:42:28] } 6... Nbd7 { [%eval 0.0] [%clk 1:41:23] } 7. Bc4 { [%eval 0.21] [%clk 1:42:43] } 7... Qb6 { [%eval 0.1] [%clk 1:40:17] } 8. Bb3 { [%eval 0.36] [%clk 1:42:59] } 8... e6 { [%eval 0.2] [%clk 1:39:52] } 9. Qd2 { [%eval 0.34] [%clk 1:43:11] } 9... Be7 { [%eval 0.26] [%clk 1:39:40] } 10. h4 { [%eval 0.25] [%clk 1:43:25] } 10... Nc5 { [%eval 0.12] [%clk 1:30:31] } 11. f3 { [%eval 0.26] [%clk 1:43:42] } 11... Bd7 { [%eval 0.2] [%clk 1:27:35] } 12. g4 { [%eval 0.39] [%clk 1:43:08] } 12... Qc7 { [%eval 0.3] [%clk 1:23:17] } 13. a3 { [%eval 0.33] [%clk 1:36:14] } 13... b5 { [%eval 0.24] [%clk 1:13:23] } 14. Ba2 { [%eval 0.35] [%clk 1:36:18] } 14... Rb8 { [%eval 0.19] [%clk 1:00:21] } 15. b4 { [%eval 0.32] [%clk 1:24:02] } 15... Nb7?! { [%eval 0.94] } { Inaccuracy. Na4 was best. } { [%clk 0:58:41] } 16. Nce2 { [%eval 1.05] [%clk 1:10:48] } 16... Nd8 { [%eval 1.09] [%clk 0:55:06] } 17. Be3 { [%eval 0.98] [%clk 0:45:25] } 17... Nc6 { [%eval 1.04] [%clk 0:52:28] } 18. O-O-O { [%eval 0.55] [%clk 0:32:15] } 18... a5?! { [%eval 1.49] } { Inaccuracy. Ne5 was best. } { [%clk 0:47:19] } 19. g5 { [%eval 1.56] [%clk 0:27:17] } 19... Nh5 { [%eval 1.79] [%clk 0:46:33] } 20. Nxc6 { [%eval 1.44] [%clk 0:27:17] } 20... Bxc6 { [%eval 1.66] [%clk 0:45:50] } 21. Kb2 { [%eval 1.4] [%clk 0:27:15] } 21... axb4 { [%eval 1.58] [%clk 0:39:50] } 22. axb4 { [%eval 1.68] [%clk 0:27:39] } 22... d5?? { [%eval 4.62] } { Blunder. O-O was best. } { [%clk 0:37:59] } 23. exd5 { [%eval 4.56] [%clk 0:20:58] } 23... Bxd5 { [%eval 4.31] [%clk 0:31:36] } 24. Bxd5 { [%eval 4.37] [%clk 0:21:09] } 24... exd5 { [%eval 4.23] [%clk 0:32:01] } 25. Nc3 { [%eval 4.56] [%clk 0:18:15] } 25... Rd8?! { [%eval 5.84] } { Inaccuracy. O-O was best. } { [%clk 0:27:54] } 26. Nxd5 { [%eval 5.96] [%clk 0:17:37] } 26... Qe5+ { [%eval 5.88] [%clk 0:27:19] } 27. Kb3? { [%eval 3.54] } { Mistake. c3 was best. } { [%clk 0:11:59] } 27... O-O?! { [%eval 5.53] } { Inaccuracy. Rxd5 was best. } { [%clk 0:17:13] } 28. Rhe1? { [%eval 2.78] } { Mistake. f4 was best. } { [%clk 0:10:44] } 28... Bxb4 { [%eval 2.53] [%clk 0:15:36] } 29. Qxb4 { [%eval 2.73] [%clk 0:10:05] } 29... Rxd5 { [%eval 2.55] [%clk 0:16:00] } 30. Bc1 { [%eval 2.56] [%clk 0:06:37] } 30... Rxd1 { [%eval 2.78] [%clk 0:10:56] } 31. Rxe5 { [%eval 2.67] [%clk 0:07:03] } 31... Rxc1 { [%eval 2.81] [%clk 0:11:22] } 32. Kb2 { [%eval 2.83] [%clk 0:05:47] } 32... Rd1 { [%eval 2.82] [%clk 0:10:49] } 33. Rxb5 { [%eval 2.59] [%clk 0:04:49] } 33... g6 { [%eval 2.67] [%clk 0:10:43] } 34. Rb8 { [%eval 2.58] [%clk 0:03:20] } 34... Rdd8 { [%eval 3.3] [%clk 0:11:04] } 35. Rxd8 { [%eval 2.58] [%clk 0:03:45] } 35... Rxd8 { [%eval 2.26] [%clk 0:11:31] } 36. Qe7 { [%eval 2.23] [%clk 0:03:12] } 36... Rb8+ { [%eval 2.38] [%clk 0:11:28] } 37. Ka3 { [%eval 2.09] [%clk 0:02:49] } 37... Ng7 { [%eval 2.08] [%clk 0:10:54] } 38. c4 { [%eval 2.01] [%clk 0:02:19] } 38... Ne6 { [%eval 1.78] [%clk 0:11:03] } 39. c5? { [%eval 0.22] } { Mistake. Qa7 was best. } { [%clk 0:01:16] } 39... Ra8+ { [%eval 0.34] [%clk 0:08:56] } 40. Kb4 { [%eval 0.14] [%clk 0:01:34] } 40... Rb8+ { [%eval 0.17] [%clk 0:08:28] } 41. Ka5 { [%eval 0.24] [%clk 0:37:39] } 41... Ra8+ { [%eval 0.08] [%clk 0:53:28] } 42. Kb5 { [%eval 0.24] [%clk 0:36:00] } 42... Rb8+ { [%eval 0.19] [%clk 0:46:07] } 43. Ka5 { [%eval 0.26] [%clk 0:36:05] } 43... Ra8+ { [%eval 0.15] [%clk 0:46:00] } 44. Kb6 { [%eval 0.25] [%clk 0:36:29] } 44... Rb8+ { [%eval 0.22] [%clk 0:45:46] } 45. Kc6 { [%eval 0.18] [%clk 0:34:17] } 45... Rc8+ { [%eval 0.28] [%clk 0:44:34] } 46. Kd6 { [%eval 0.24] [%clk 0:34:36] } 46... Nxc5 { [%eval 0.15] [%clk 0:26:36] } 47. h5 { [%eval 0.17] [%clk 0:33:38] } 47... gxh5 { [%eval 0.16] [%clk 0:23:30] } 48. Ke5 { [%eval 0.0] [%clk 0:31:13] } 48... h4 { [%eval 0.0] [%clk 0:20:45] } 49. Kf6 { [%eval 0.0] [%clk 0:23:01] } 49... Rc6+ { [%eval 0.0] [%clk 0:20:49] } 50. Kf5 { [%eval -0.08] [%clk 0:23:29] } 50... Rc8 { [%eval 0.0] [%clk 0:19:34] } 51. Qe1 { [%eval -0.1] [%clk 0:16:00] } 51... Ne6 { [%eval 0.0] [%clk 0:18:09] } 52. Qxh4 { [%eval 0.0] [%clk 0:11:02] } 52... Ng7+ { [%eval 0.0] [%clk 0:16:46] } 53. Kg4 { [%eval 0.0] [%clk 0:09:38] } 53... Rc4+ { [%eval 0.0] [%clk 0:17:04] } 54. f4 { [%eval 0.0] [%clk 0:10:03] } 1/2-1/2