Event: Round 8: Joshua Colas - Zachary Tanenbaum
Date: 2023-04-09
White: Joshua Colas
WhiteTitle: FM
Black: Zachary Tanenbaum
BlackTitle: CM
Result: 1-0
ECO: A28
Opening: English Opening: Four Knights System, Nimzowitsch Variation
Variant: Standard

1. c4 { [%eval 0.23] [%clk 1:11:50] } 1... e5 { [%eval 0.25] [%clk 1:30:57] } 2. Nc3 { [%eval 0.12] [%clk 1:12:03] } 2... Nf6 { [%eval 0.32] [%clk 1:31:23] } 3. Nf3 { [%eval 0.0] [%clk 1:12:23] } 3... Nc6 { [%eval 0.18] [%clk 1:31:49] } 4. e4 { [%eval 0.03] [%clk 1:11:57] } 4... Bb4 { [%eval 0.03] [%clk 1:32:15] } 5. d3 { [%eval 0.08] [%clk 1:12:08] } 5... d6 { [%eval 0.1] [%clk 1:32:41] } 6. a3 { [%eval 0.0] [%clk 1:11:56] } 6... Bc5 { [%eval 0.0] [%clk 1:33:05] } 7. b4 { [%eval 0.1] [%clk 1:11:46] } 7... Bb6 { [%eval 0.07] [%clk 1:33:19] } 8. Na4 { [%eval 0.18] [%clk 1:11:47] } 8... Bg4 { [%eval 0.38] [%clk 1:33:01] } 9. Nxb6 { [%eval 0.22] [%clk 1:11:54] } 9... axb6 { [%eval 0.23] [%clk 1:33:22] } 10. Bb2 { [%eval 0.18] [%clk 1:12:14] } 10... O-O { [%eval 0.36] [%clk 1:32:58] } 11. Be2 { [%eval 0.3] [%clk 1:11:57] } 11... Bxf3?! { [%eval 0.93] } { Inaccuracy. Ne7 was best. } { [%clk 1:31:27] } 12. Bxf3 { [%eval 0.88] [%clk 1:12:16] } 12... Nd4 { [%eval 0.81] [%clk 1:31:24] } 13. Bxd4 { [%eval 0.7] [%clk 1:11:04] } 13... exd4 { [%eval 0.91] [%clk 1:31:52] } 14. O-O { [%eval 0.7] [%clk 1:11:06] } 14... Qe7 { [%eval 0.86] [%clk 1:24:36] } 15. Qd2 { [%eval 0.57] [%clk 1:09:52] } 15... Ra7 { [%eval 1.07] [%clk 1:22:59] } 16. Bd1 { [%eval 1.08] [%clk 1:07:10] } 16... Nd7 { [%eval 1.12] [%clk 1:01:11] } 17. f4 { [%eval 1.07] [%clk 1:05:13] } 17... c5 { [%eval 1.23] [%clk 0:51:15] } 18. b5 { [%eval 1.09] [%clk 1:04:56] } 18... h6 { [%eval 1.31] [%clk 0:41:53] } 19. a4 { [%eval 1.08] [%clk 1:03:41] } 19... Nf6 { [%eval 1.23] [%clk 0:38:46] } 20. h3 { [%eval 1.34] [%clk 1:03:14] } 20... Nd7 { [%eval 1.29] [%clk 0:35:28] } 21. Bb3 { [%eval 1.1] [%clk 1:02:16] } 21... Raa8 { [%eval 0.99] [%clk 0:29:58] } 22. Rae1 { [%eval 1.09] [%clk 1:00:31] } 22... Kh7 { [%eval 0.99] [%clk 0:25:36] } 23. Qf2 { [%eval 0.51] [%clk 1:00:45] } 23... Rae8?! { [%eval 1.15] } { Inaccuracy. g5 was best. } { [%clk 0:23:46] } 24. Bd1 { [%eval 1.17] [%clk 1:00:34] } 24... g5?! { [%eval 1.91] } { Inaccuracy. g6 was best. } { [%clk 0:21:19] } 25. Bg4 { [%eval 1.99] [%clk 0:57:14] } 25... gxf4 { [%eval 1.99] [%clk 0:18:09] } 26. Bf5+ { [%eval 2.14] [%clk 0:57:34] } 26... Kg7 { [%eval 1.82] [%clk 0:18:16] } 27. Bxd7 { [%eval 1.95] [%clk 0:57:33] } 27... Qxd7 { [%eval 1.79] [%clk 0:18:44] } 28. Qxf4 { [%eval 1.94] [%clk 0:57:51] } 28... Qe6 { [%eval 2.19] [%clk 0:17:37] } 29. Rf3 { [%eval 2.21] [%clk 0:57:28] } 29... Qe5 { [%eval 2.63] [%clk 0:08:50] } 30. Qh4 { [%eval 2.49] [%clk 0:56:20] } 30... f5 { [%eval 2.48] [%clk 0:07:18] } 31. Rf4 { [%eval 2.53] [%clk 0:48:36] } 31... Qe7 { [%eval 2.75] [%clk 0:04:40] } 32. Qf2 { [%eval 2.71] [%clk 0:46:53] } 32... fxe4 { [%eval 2.87] [%clk 0:01:14] } 33. Qg3+ { [%eval 2.6] [%clk 0:45:36] } 33... Kh7 { [%eval 2.61] [%clk 0:01:39] } 34. Rfxe4 { [%eval 2.45] [%clk 0:46:01] } 34... Qd7 { [%eval 2.52] [%clk 0:01:05] } 35. Rxe8 { [%eval 2.65] [%clk 0:46:09] } 35... Rxe8 { [%eval 2.25] [%clk 0:01:35] } 36. Rxe8 { [%eval 2.52] [%clk 0:46:31] } 36... Qxe8 { [%eval 2.7] [%clk 0:02:03] } 37. Qxd6 { [%eval 2.7] [%clk 0:46:52] } 37... Qe3+ { [%eval 2.53] [%clk 0:02:28] } 38. Kh2 { [%eval 2.99] [%clk 0:47:17] } 38... Qxd3?! { [%eval 4.64] } { Inaccuracy. Qe8 was best. } { [%clk 0:02:51] } 39. Qc7+ { [%eval 4.67] [%clk 0:47:43] } 39... Kg8 { [%eval 5.3] [%clk 0:00:42] } 40. Qc8+ { [%eval 5.01] [%clk 0:48:01] } 40... Kg7 { [%eval 5.16] [%clk 0:01:03] } 41. Qxb7+ { [%eval 5.72] [%clk 0:48:20] } 41... Kg8 { [%eval 5.51] [%clk 0:01:20] } 42. Qb8+ { [%eval 5.21] [%clk 0:48:36] } 42... Kf7 { [%eval 6.11] [%clk 0:01:16] } 43. Qxb6 { [%eval 5.59] [%clk 0:48:26] } 43... Qxc4 { [%eval 7.29] [%clk 0:00:34] } 44. Qc7+ { [%eval 8.03] [%clk 0:48:50] } 44... Kg6 { [%eval 9.0] [%clk 0:00:44] } 45. b6 { [%eval 8.43] [%clk 0:49:12] } 45... d3 { [%eval 12.93] [%clk 0:00:48] } 46. b7 { [%eval 14.19] [%clk 0:49:28] } 46... d2?! { [%eval #7] } { Checkmate is now unavoidable. Qb4 was best. } { [%clk 0:00:41] } 47. Qd6+ { [%eval #6] [%clk 0:49:51] } 47... Kg7 { [%eval #6] [%clk 0:00:33] } 48. b8=Q { [%eval #5] [%clk 0:50:11] } 1-0