Event: Round 1: Donald Johnson - Sergio Barrientos
Date: 2023-08-02
White: Donald Johnson
WhiteTitle: FM
Black: Sergio Barrientos
BlackTitle: GM
Result: 0-1
ECO: B42
Opening: Sicilian Defense: Kan Variation, Polugaevsky Variation
Variant: Standard

1. e4 { [%eval 0.36] [%clk 1:30:59] } 1... c5 { [%eval 0.32] [%clk 1:30:45] } 2. Nf3 { [%eval 0.0] [%clk 1:31:28] } 2... e6 { [%eval 0.34] [%clk 1:30:32] } 3. d4 { [%eval 0.42] [%clk 1:31:46] } 3... cxd4 { [%eval 0.37] [%clk 1:30:55] } 4. Nxd4 { [%eval 0.4] [%clk 1:32:14] } 4... a6 { [%eval 0.58] [%clk 1:30:56] } 5. Bd3 { [%eval 0.42] [%clk 1:32:29] } 5... Bc5 { [%eval 0.52] [%clk 1:31:17] } 6. Nb3 { [%eval 0.52] [%clk 1:32:58] } 6... Be7 { [%eval 0.84] [%clk 1:30:27] } 7. Qg4 { [%eval 0.6] [%clk 1:33:15] } 7... g6 { [%eval 0.93] [%clk 1:29:43] } 8. Qe2 { [%eval 0.64] [%clk 1:32:58] } 8... Nc6 { [%eval 0.65] [%clk 1:29:27] } 9. Nc3 { [%eval 0.77] [%clk 1:33:17] } 9... d6 { [%eval 0.86] [%clk 1:28:44] } 10. Be3 { [%eval 0.79] [%clk 1:31:23] } 10... Nf6 { [%eval 0.8] [%clk 1:28:24] } 11. Bh6 { [%eval 0.66] [%clk 1:27:52] } 11... b5 { [%eval 0.57] [%clk 1:25:26] } 12. a3 { [%eval 0.6] [%clk 1:19:20] } 12... Bb7 { [%eval 0.73] [%clk 1:24:44] } 13. O-O-O { [%eval 0.74] [%clk 1:12:29] } 13... Nd7 { [%eval 0.93] [%clk 1:16:32] } 14. f4 { [%eval 0.91] [%clk 0:55:00] } 14... b4 { [%eval 1.1] [%clk 1:14:25] } 15. axb4 { [%eval 1.02] [%clk 0:52:50] } 15... Nxb4 { [%eval 0.99] [%clk 1:14:48] } 16. Kb1 { [%eval 0.96] [%clk 0:49:13] } 16... Rc8 { [%eval 1.37] [%clk 1:12:18] } 17. f5 { [%eval 1.39] [%clk 0:44:05] } 17... Bf6?! { [%eval 2.2] } { Inaccuracy. Ne5 was best. } { [%clk 0:59:31] } 18. fxe6 { [%eval 2.27] [%clk 0:40:26] } 18... fxe6 { [%eval 2.27] [%clk 0:59:45] } 19. Bc4 { [%eval 2.39] [%clk 0:36:15] } 19... Qe7 { [%eval 2.21] [%clk 0:57:36] } 20. Nd4 { [%eval 2.37] [%clk 0:34:42] } 20... Nc5 { [%eval 2.31] [%clk 0:52:07] } 21. Rhf1 { [%eval 2.49] [%clk 0:22:18] } 21... Rb8?! { [%eval 3.72] } { Inaccuracy. Bxd4 was best. } { [%clk 0:40:02] } 22. Qg4?! { [%eval 2.78] } { Inaccuracy. Bb5+ was best. } { [%clk 0:18:04] } 22... Nc6?! { [%eval 3.77] } { Inaccuracy. Bc8 was best. } { [%clk 0:25:40] } 23. Nxe6?? { [%eval 0.09] } { Blunder. Nxc6 was best. } { [%clk 0:08:17] } 23... Ne5 { [%eval 0.07] [%clk 0:22:13] } 24. Qf4 { [%eval 0.05] [%clk 0:07:15] } 24... Nxc4 { [%eval 0.0] [%clk 0:20:21] } 25. Qxf6 { [%eval 0.0] [%clk 0:05:49] } 25... Qxf6 { [%eval 0.1] [%clk 0:20:26] } 26. Rxf6 { [%eval 0.06] [%clk 0:06:06] } 26... Nxe6 { [%eval 0.03] [%clk 0:19:31] } 27. Rxe6+ { [%eval 0.0] [%clk 0:06:12] } 27... Kf7 { [%eval 0.13] [%clk 0:19:09] } 28. Rdxd6 { [%eval 0.0] [%clk 0:05:49] } 28... Nxd6 { [%eval 0.12] [%clk 0:19:25] } 29. Rxd6 { [%eval 0.15] [%clk 0:06:18] } 29... Rbd8 { [%eval 0.17] [%clk 0:13:33] } 30. Rb6 { [%eval 0.1] [%clk 0:05:15] } 30... Rd7 { [%eval 0.21] [%clk 0:13:55] } 31. Nd5?! { [%eval -0.87] } { Inaccuracy. g3 was best. } { [%clk 0:04:21] } 31... Bxd5 { [%eval -0.86] [%clk 0:12:23] } 32. exd5 { [%eval -0.84] [%clk 0:04:50] } 32... Rxd5 { [%eval -0.97] [%clk 0:12:36] } 33. Rxa6 { [%eval -0.94] [%clk 0:05:15] } 33... Rc8 { [%eval -0.67] [%clk 0:12:13] } 34. b3 { [%eval -0.71] [%clk 0:03:48] } 34... g5 { [%eval -0.54] [%clk 0:11:50] } 35. Kc1? { [%eval -1.91] } { Mistake. g3 was best. } { [%clk 0:02:01] } 35... Rf5 { [%eval -1.99] [%clk 0:11:14] } 36. h4 { [%eval -2.05] [%clk 0:01:11] } 36... gxh4 { [%eval -1.6] [%clk 0:10:27] } 37. Be3?! { [%eval -2.24] } { Inaccuracy. Bd2 was best. } { [%clk 0:01:24] } 37... Re8 { [%eval -2.6] [%clk 0:10:07] } 38. Bd4 { [%eval -2.32] [%clk 0:01:20] } 38... Re4 { [%eval -2.7] [%clk 0:09:38] } 39. Ba7?! { [%eval -3.62] } { Inaccuracy. Ra7+ was best. } { [%clk 0:00:44] } 39... Rg5 { [%eval -3.88] [%clk 0:09:43] } 40. Rh6 { [%eval -4.11] [%clk 0:00:33] } 40... Kg7 { [%eval -4.1] [%clk 0:09:49] } 41. Rd6 { [%eval -4.31] [%clk 0:00:54] } 41... Rxg2 { [%eval -4.31] [%clk 0:10:07] } 42. Bd4+ { [%eval -5.22] [%clk 0:01:23] } 42... Kf7 { [%eval -4.7] [%clk 0:09:08] } 43. Ba7 { [%eval -4.88] [%clk 0:01:44] } 43... h3 { [%eval -5.07] [%clk 0:08:03] } 44. Rd1 { [%eval -6.36] [%clk 0:02:06] } 44... h2 { [%eval -5.29] [%clk 0:08:10] } 45. Rh1 { [%eval -6.56] [%clk 0:02:35] } 45... Ree2 { [%eval -6.72] [%clk 0:07:56] } 46. Bd4 { [%eval -6.93] [%clk 0:02:33] } 46... Rxc2+ { [%eval -6.58] [%clk 0:08:08] } 47. Kb1 { [%eval -6.7] [%clk 0:03:02] } 47... Rcd2 { [%eval -7.01] [%clk 0:08:26] } 48. Bc5 { [%eval -7.27] [%clk 0:03:17] } 48... Rg1+ { [%eval -35.71] [%clk 0:08:34] } 49. Bxg1 { [%eval -35.76] [%clk 0:03:32] } 49... Rd1+ { [%eval -35.71] [%clk 0:08:55] } 50. Kc2 { [%eval -35.57] [%clk 0:04:01] } 50... hxg1=Q { [%eval -61.18] [%clk 0:09:11] } 51. Rxg1 { [%eval -35.09] [%clk 0:04:27] } 51... Rxg1 { [%eval -35.45] [%clk 0:09:22] } 0-1