Event: Round 1: Kozower, Ethan - Jacobson, Aaron
Site: https://lichess.org/broadcast/marshall-masters-2025--august/round-1/oFdAS6oT/WKrA8nLA
White: Kozower, Ethan
WhiteElo: 1954
Black: Jacobson, Aaron
BlackTitle: IM
BlackElo: 2365
Result: 0-1
ECO: A20
Opening: English Opening: King's English Variation
Variant: Standard

1. c4 { [%eval 0.12] [%clk 0:25:00] } 1... e5 { [%eval 0.1] [%clk 0:24:55] } 2. e3 { [%eval 0.0] [%clk 0:25:00] } 2... Nf6 { [%eval 0.11] [%clk 0:24:21] } 3. Nc3 { [%eval 0.03] [%clk 0:25:00] } 3... Nc6 { [%eval 0.11] [%clk 0:23:45] } 4. a3 { [%eval -0.13] [%clk 0:24:45] } 4... d5 { [%eval -0.04] [%clk 0:22:54] } 5. cxd5 { [%eval -0.05] [%clk 0:24:45] } 5... Nxd5 { [%eval -0.16] [%clk 0:22:54] } 6. Qc2 { [%eval -0.16] [%clk 0:24:45] } 6... Nb6 { [%eval 0.05] [%clk 0:22:51] } 7. Nf3 { [%eval 0.0] [%clk 0:23:49] } 7... Bd6 { [%eval 0.08] [%clk 0:22:37] } 8. Bd3 { [%eval 0.07] [%clk 0:21:10] } 8... g6 { [%eval 0.46] [%clk 0:20:44] } 9. b4 { [%eval 0.29] [%clk 0:17:35] } 9... f5 { [%eval 0.31] [%clk 0:20:43] } 10. Bb5 { [%eval 0.29] [%clk 0:17:35] } 10... Bd7 { [%eval 0.34] [%clk 0:20:35] } 11. Bb2 { [%eval -0.15] [%clk 0:14:12] } 11... Qe7 { [%eval 0.28] [%clk 0:19:54] } 12. Na4 { [%eval -0.06] [%clk 0:12:49] } 12... Nxa4 { [%eval 0.26] [%clk 0:16:49] } 13. Bxa4 { [%eval 0.24] [%clk 0:12:49] } 13... Rf8 { [%eval 0.25] [%clk 0:15:51] } 14. O-O-O?? { [%eval -2.06] } { Blunder. d3 was best. } { [%clk 0:08:37] } 14... e4 { [%eval -1.76] [%clk 0:15:19] } 15. Bxc6 { [%eval -2.38] [%clk 0:08:20] } 15... Bxc6? { [%eval -0.91] } { Mistake. bxc6 was best. } { [%clk 0:15:01] } 16. Nd4 { [%eval -1.1] [%clk 0:08:20] } 16... Bd7 { [%eval -0.92] [%clk 0:14:55] } 17. Nb3? { [%eval -2.66] } { Mistake. Kb1 was best. } { [%clk 0:05:26] } 17... Ba4 { [%eval -2.61] [%clk 0:14:01] } 18. Qc4 { [%eval -3.13] [%clk 0:04:53] } 18... Qf7 { [%eval -3.03] [%clk 0:13:21] } 19. Qxf7+ { [%eval -3.07] [%clk 0:04:47] } 19... Rxf7 { [%eval -2.92] [%clk 0:13:21] } 20. Kc2 { [%eval -2.92] [%clk 0:04:44] } 20... c5 { [%eval -3.12] [%clk 0:11:20] } 21. bxc5 { [%eval -3.05] [%clk 0:03:59] } 21... Rc7? { [%eval -1.23] } { Mistake. Rc8 was best. } { [%clk 0:11:19] } 22. Kb1 { [%eval -1.27] [%clk 0:02:05] } 22... Bxc5 { [%eval -1.26] [%clk 0:10:32] } 23. Ka2 { [%eval -1.24] [%clk 0:01:40] } 23... Bd6?! { [%eval -0.61] } { Inaccuracy. O-O-O was best. } { [%clk 0:09:45] } 24. Rc1 { [%eval -0.48] [%clk 0:01:36] } 24... Rac8 { [%eval -0.4] [%clk 0:09:45] } 25. Rc3?! { [%eval -1.35] } { Inaccuracy. Rxc7 was best. } { [%clk 0:01:03] } 25... Bb5 { [%eval -0.9] [%clk 0:09:01] } 26. h4?! { [%eval -1.64] } { Inaccuracy. Rxc7 was best. } { [%clk 0:00:47] } 26... Bc4 { [%eval -1.99] [%clk 0:08:29] } 27. Kb1 { [%eval -2.53] [%clk 0:00:31] } 27... b5 { [%eval -2.38] [%clk 0:08:04] } 28. Na5 { [%eval -2.32] [%clk 0:00:11] } 28... Bd3+ { [%eval -1.91] [%clk 0:07:44] } 29. Ka2 { [%eval -1.98] [%clk 0:00:11] } 29... b4 { [%eval -2.0] [%clk 0:06:30] } 30. Rxc7 { [%eval -1.86] [%clk 0:00:11] } 30... Rxc7 { [%eval -2.0] [%clk 0:06:30] } 31. Rc1?! { [%eval -3.28] } { Inaccuracy. Kb3 was best. } { [%clk 0:00:09] } 31... bxa3 { [%eval -3.0] [%clk 0:05:34] } 32. Bxa3 { [%eval -3.55] [%clk 0:00:09] } 32... Kd7?! { [%eval -2.43] } { Inaccuracy. Rxc1 was best. } { [%clk 0:05:10] } 33. Rxc7+ { [%eval -2.72] [%clk 0:00:04] } 33... Bxc7 { [%eval -2.71] [%clk 0:05:10] } 34. Nb3?! { [%eval -3.59] } { Inaccuracy. Bb4 was best. } { [%clk 0:00:04] } 34... Bc4 { [%eval -3.27] [%clk 0:04:46] } 35. g3?! { [%eval -4.11] } { Inaccuracy. Kb2 was best. } { [%clk 0:00:04] } 35... Ba5 { [%eval -5.23] [%clk 0:03:38] } 36. Bc5 { [%eval -5.44] [%clk 0:00:02] } 36... Bxd2 { [%eval -5.19] [%clk 0:03:27] } 37. Kb2 { [%eval -6.62] [%clk 0:00:02] } 37... Bxb3 { [%eval -6.37] [%clk 0:03:24] } 38. Kxb3 { [%eval -6.45] [%clk 0:00:02] } 38... a6 { [%eval -6.25] [%clk 0:03:24] } 39. Bb4 { [%eval -8.0] [%clk 0:00:02] } 39... Bxb4 { [%eval -7.9] [%clk 0:03:22] } 40. Kxb4 { [%eval -7.73] [%clk 0:00:02] } 40... Kc6 { [%eval -8.25] [%clk 0:03:22] } 41. Ka5 { [%eval -7.93] [%clk 0:00:02] } 41... Kb7 { [%eval -7.13] [%clk 0:03:22] } 42. Ka4 { [%eval -8.31] [%clk 0:00:02] } 42... Kb6 { [%eval -7.95] [%clk 0:03:22] } 43. Kb4 { [%eval -8.26] [%clk 0:00:02] } 43... a5+ { [%eval -7.68] [%clk 0:03:22] } 44. Ka4 { [%eval -8.98] [%clk 0:00:01] } 44... Ka6 { [%eval -8.47] [%clk 0:03:22] } 45. Ka3 { [%eval -9.0] [%clk 0:00:01] } 45... Kb5 { [%eval -10.03] [%clk 0:03:22] } 46. Kb3 { [%eval -10.99] [%clk 0:00:01] } 46... a4+ { [%eval -9.56] [%clk 0:03:22] } 47. Ka3? { [%eval #-12] } { Checkmate is now unavoidable. Kc3 was best. } { [%clk 0:00:01] } 47... Ka5 { [%eval #-12] [%clk 0:03:22] } 48. Ka2 { [%eval #-12] [%clk 0:00:01] } 48... Kb4 { [%eval #-11] [%clk 0:03:22] } 49. Kb2 { [%eval #-11] [%clk 0:00:01] } 49... a3+ { [%eval #-10] [%clk 0:03:22] } 50. Ka2 { [%eval #-9] [%clk 0:00:01] } 50... Ka4 { [%eval #-9] [%clk 0:03:22] } 51. Ka1 { [%eval #-7] [%clk 0:00:01] } 51... Kb3 { [%eval #-6] [%clk 0:03:22] } 52. Kb1 { [%eval #-6] [%clk 0:00:01] } 52... a2+ { [%eval #-5] [%clk 0:03:19] } 53. Ka1 { [%eval #-5] [%clk 0:00:01] } 53... Ka3 { [%eval #-5] [%clk 0:03:19] } 54. h5 { [%eval #-5] [%clk 0:00:01] } 54... gxh5 { [%eval #-4] [%clk 0:03:19] } 55. g4 { [%eval #-4] [%clk 0:00:01] } 55... hxg4 { [%eval #-3] [%clk 0:03:19] } 56. f3 { [%eval #-3] [%clk 0:00:01] } 56... exf3 { [%eval #-2] [%clk 0:03:19] } 57. e4 { [%eval #-2] [%clk 0:00:01] } 57... f2 { [%eval #-1] [%clk 0:03:19] } 0-1