Event: Round 4: Niall O'Sullivan - Austin O'Hara
Date: 2024-02-04
White: Niall O'Sullivan
Black: Austin O'Hara
Result: 0-1
ECO: A01
Opening: Nimzo-Larsen Attack: Classical Variation
Variant: Standard

1. b3 { [%eval 0.0] [%clk 1:07:11] } 1... d5 { [%eval 0.08] [%clk 1:26:51] } 2. Bb2 { [%eval 0.0] [%clk 1:07:39] } 2... Nc6 { [%eval 0.51] [%clk 1:26:41] } 3. e3 { [%eval 0.0] [%clk 1:07:50] } 3... a6 { [%eval 0.37] [%clk 1:25:25] } 4. Nf3 { [%eval 0.42] [%clk 1:08:16] } 4... Bg4 { [%eval 0.47] [%clk 1:25:04] } 5. h3 { [%eval 0.52] [%clk 1:08:21] } 5... Bxf3 { [%eval 0.51] [%clk 1:22:17] } 6. Qxf3 { [%eval 0.48] [%clk 1:08:37] } 6... e5 { [%eval 0.83] [%clk 1:21:18] } 7. d3?! { [%eval 0.14] } { Inaccuracy. g4 was best. } { [%clk 1:06:47] } 7... g6 { [%eval 0.23] [%clk 1:16:52] } 8. Nd2 { [%eval -0.07] [%clk 1:06:49] } 8... Bg7 { [%eval 0.0] [%clk 1:14:57] } 9. O-O-O { [%eval -0.37] [%clk 1:03:52] } 9... Nge7 { [%eval -0.28] [%clk 1:07:20] } 10. g4 { [%eval -0.3] [%clk 1:03:38] } 10... h5?! { [%eval 0.26] } { Inaccuracy. a5 was best. } { [%clk 1:04:36] } 11. Bg2 { [%eval 0.16] [%clk 1:01:42] } 11... Qd6 { [%eval 0.3] [%clk 1:01:47] } 12. Rhe1?! { [%eval -0.68] } { Inaccuracy. Kb1 was best. } { [%clk 0:55:36] } 12... O-O-O { [%eval -0.22] [%clk 0:57:30] } 13. e4?! { [%eval -1.27] } { Inaccuracy. Qe2 was best. } { [%clk 0:45:23] } 13... d4 { [%eval -1.23] [%clk 0:54:02] } 14. Nc4 { [%eval -1.26] [%clk 0:45:30] } 14... Bh6+ { [%eval -1.42] [%clk 0:50:18] } 15. Kb1 { [%eval -1.36] [%clk 0:45:44] } 15... Qd7?! { [%eval -0.71] } { Inaccuracy. Qe6 was best. } { [%clk 0:47:19] } 16. Qg3? { [%eval -2.26] } { Mistake. g5 was best. } { [%clk 0:44:47] } 16... h4 { [%eval -2.02] [%clk 0:41:49] } 17. Qf3 { [%eval -2.06] [%clk 0:43:41] } 17... b5 { [%eval -1.74] [%clk 0:39:04] } 18. Na3?! { [%eval -2.91] } { Inaccuracy. Ne3 was best. } { [%clk 0:40:23] } 18... Qd6?? { [%eval -0.58] } { Blunder. Bf4 was best. } { [%clk 0:38:46] } 19. g5 { [%eval -0.65] [%clk 0:38:29] } 19... Bg7 { [%eval -0.61] [%clk 0:33:20] } 20. Rc1?! { [%eval -1.3] } { Inaccuracy. Qxf7 was best. } { [%clk 0:38:04] } 20... Rdf8?! { [%eval -0.67] } { Inaccuracy. Qe6 was best. } { [%clk 0:32:44] } 21. Qe2 { [%eval -0.8] [%clk 0:35:53] } 21... Rh5 { [%eval -0.83] [%clk 0:29:32] } 22. Qd2 { [%eval -0.94] [%clk 0:35:22] } 22... f6 { [%eval -1.08] [%clk 0:29:18] } 23. Ka1?! { [%eval -2.06] } { Inaccuracy. Bf3 was best. } { [%clk 0:34:25] } 23... Rxg5 { [%eval -1.92] [%clk 0:29:11] } 24. Bf3 { [%eval -1.94] [%clk 0:34:29] } 24... Bh6 { [%eval -1.96] [%clk 0:22:45] } 25. c3? { [%eval -3.37] } { Mistake. Qe2 was best. } { [%clk 0:31:10] } 25... Rh8? { [%eval -1.77] } { Mistake. Rh5 was best. } { [%clk 0:16:25] } 26. Rc2? { [%eval -3.47] } { Mistake. Qd1 was best. } { [%clk 0:30:18] } 26... Qe6? { [%eval -2.03] } { Mistake. Rg2 was best. } { [%clk 0:16:09] } 27. c4?! { [%eval -2.91] } { Inaccuracy. cxd4 was best. } { [%clk 0:27:33] } 27... b4 { [%eval -2.89] [%clk 0:15:42] } 28. Nb1 { [%eval -2.99] [%clk 0:27:57] } 28... Qxh3? { [%eval -1.14] } { Mistake. Rg1 was best. } { [%clk 0:12:44] } 29. Qd1 { [%eval -1.25] [%clk 0:28:03] } 29... Qe6 { [%eval -1.09] [%clk 0:11:47] } 30. Bc1 { [%eval -1.13] [%clk 0:28:04] } 30... f5 { [%eval -1.4] [%clk 0:10:02] } 31. Bxg5 { [%eval -1.47] [%clk 0:28:12] } 31... Bxg5 { [%eval -1.46] [%clk 0:10:30] } 32. exf5?! { [%eval -2.21] } { Inaccuracy. Nd2 was best. } { [%clk 0:27:17] } 32... gxf5 { [%eval -1.99] [%clk 0:10:43] } 33. Rce2 { [%eval -2.47] [%clk 0:21:55] } 33... Qd6 { [%eval -2.05] [%clk 0:09:13] } 34. Bg2?! { [%eval -2.72] } { Inaccuracy. Nd2 was best. } { [%clk 0:20:41] } 34... h3 { [%eval -2.82] [%clk 0:08:57] } 35. Rh1 { [%eval -2.73] [%clk 0:20:48] } 35... h2 { [%eval -2.87] [%clk 0:08:24] } 36. Nd2 { [%eval -2.62] [%clk 0:20:46] } 36... e4 { [%eval -2.14] [%clk 0:07:00] } 37. dxe4?? { [%eval -6.0] } { Blunder. Nxe4 was best. } { [%clk 0:21:01] } 37... d3 { [%eval -5.49] [%clk 0:07:10] } 38. Ree1?? { [%eval #-3] } { Checkmate is now unavoidable. Nf3 was best. } { [%clk 0:20:58] } 38... Qd4+?? { [%eval -6.64] } { Lost forced checkmate sequence. Qe5+ was best. } { [%clk 0:07:23] } 39. Kb1 { [%eval -5.33] [%clk 0:21:16] } 39... Qxf2 { [%eval -5.3] [%clk 0:07:24] } 40. exf5 { [%eval -6.56] [%clk 0:17:13] } 40... Qxg2 { [%eval -6.84] [%clk 0:06:17] } 41. Ne4 { [%eval -6.77] [%clk 0:17:36] } 41... Bh4 { [%eval -6.74] [%clk 0:05:31] } 42. Re3 { [%eval -7.24] [%clk 0:16:29] } 42... Nxf5 { [%eval -7.27] [%clk 0:03:51] } 43. Rxd3 { [%eval -7.33] [%clk 0:16:35] } 43... Qxe4 { [%eval -6.05] [%clk 0:04:02] } 44. Kc2?? { [%eval #-8] } { Checkmate is now unavoidable. Qf3 was best. } { [%clk 0:14:48] } 44... Ne3+ { [%eval #-7] [%clk 0:04:24] } 45. Kd2 { [%eval #-6] [%clk 0:15:08] } 45... Nxd1 { [%eval #-5] [%clk 0:04:28] } 46. Rxd1?? { [%eval #-5] } { Checkmate is now unavoidable. Kxd1 was best. } { [%clk 0:15:32] } 46... Bg5+ { [%eval #-4] [%clk 0:04:32] } 47. Kc2 { [%eval #-4] [%clk 0:15:58] } 47... Qxd3+ { [%eval #-6] [%clk 0:04:24] } 48. Kxd3 { [%eval #-6] [%clk 0:16:10] } 48... Rd8+ { [%eval #-5] [%clk 0:04:37] } 49. Ke2 { [%eval #-5] [%clk 0:16:36] } 49... Rxd1 { [%eval #-4] [%clk 0:05:01] } 50. Kxd1 { [%eval #-3] [%clk 0:16:51] } 0-1