Event: Round 5: Byron, Alan M - Hebden, Mark L
Date: 2025-04-27
White: Byron, Alan M
WhiteElo: 2049
Black: Hebden, Mark L
BlackTitle: GM
BlackElo: 2383
Result: 0-1
ECO: E73
Opening: King's Indian Defense: Averbakh Variation, Geller Defense
Variant: Standard
TimeControl: 90+30

1. d4 { [%eval 0.17] [%clk 1:30:38] } 1... Nf6 { [%eval 0.19] [%clk 1:30:29] } 2. c4 { [%eval 0.18] [%clk 1:30:58] } 2... g6 { [%eval 0.19] [%clk 1:30:36] } 3. Nc3 { [%eval 0.21] [%clk 1:31:19] } 3... Bg7 { [%eval 0.51] [%clk 1:30:58] } 4. e4 { [%eval 0.4] [%clk 1:31:04] } 4... d6 { [%eval 0.55] [%clk 1:31:18] } 5. Be2 { [%eval 0.51] [%clk 1:31:03] } 5... O-O { [%eval 0.48] [%clk 1:29:27] } 6. Bg5 { [%eval 0.18] [%clk 1:30:53] } 6... Nbd7 { [%eval 0.57] [%clk 1:26:30] } 7. Nf3 { [%eval 0.42] [%clk 1:26:33] } 7... e5 { [%eval 0.49] [%clk 1:24:47] } 8. dxe5 { [%eval 0.11] [%clk 1:24:23] } 8... dxe5 { [%eval 0.15] [%clk 1:24:58] } 9. O-O { [%eval 0.04] [%clk 1:23:49] } 9... h6 { [%eval 0.41] [%clk 1:23:43] } 10. Be3 { [%eval 0.33] [%clk 1:23:47] } 10... c6 { [%eval 0.34] [%clk 1:21:13] } 11. Nd2 { [%eval 0.15] [%clk 1:18:46] } 11... Qe7 { [%eval 0.17] [%clk 1:21:28] } 12. Qc2 { [%eval -0.19] [%clk 1:17:52] } 12... Rd8 { [%eval 0.18] [%clk 1:19:21] } 13. Rfd1 { [%eval 0.08] [%clk 1:12:22] } 13... b6 { [%eval 0.34] [%clk 1:10:12] } 14. a4 { [%eval 0.15] [%clk 0:59:02] } 14... a5 { [%eval 0.12] [%clk 1:00:53] } 15. Nb3 { [%eval 0.23] [%clk 0:56:13] } 15... Bf8 { [%eval 0.23] [%clk 0:54:44] } 16. c5 { [%eval 0.01] [%clk 0:46:27] } 16... Nxc5 { [%eval 0.04] [%clk 0:53:51] } 17. Nxc5 { [%eval -0.01] [%clk 0:46:42] } 17... bxc5 { [%eval 0.03] [%clk 0:52:23] } 18. Rxd8 { [%eval -0.02] [%clk 0:42:00] } 18... Qxd8 { [%eval 0.13] [%clk 0:52:51] } 19. Nb1 { [%eval 0.0] [%clk 0:42:20] } 19... Be6 { [%eval 0.32] [%clk 0:51:59] } 20. Na3 { [%eval 0.26] [%clk 0:39:57] } 20... Rb8 { [%eval 0.77] [%clk 0:49:05] } 21. Bc4 { [%eval 0.68] [%clk 0:37:48] } 21... Bc8 { [%eval 0.69] [%clk 0:48:32] } 22. Rd1 { [%eval 0.77] [%clk 0:36:30] } 22... Qc7 { [%eval 0.75] [%clk 0:47:56] } 23. b3 { [%eval 0.72] [%clk 0:33:35] } 23... h5 { [%eval 1.15] [%clk 0:46:09] } 24. h3 { [%eval 0.9] [%clk 0:32:20] } 24... Ne8 { [%eval 0.69] [%clk 0:45:10] } 25. Qc3 { [%eval 0.34] [%clk 0:29:11] } 25... Ng7 { [%eval 0.31] [%clk 0:44:54] } 26. Bd2 { [%eval 0.39] [%clk 0:25:33] } 26... Rb4 { [%eval 0.89] [%clk 0:36:29] } 27. Qg3 { [%eval 0.88] [%clk 0:17:27] } 27... Ne6 { [%eval 0.94] [%clk 0:35:52] } 28. Bc3 { [%eval 0.99] [%clk 0:15:44] } 28... Nf4 { [%eval 0.98] [%clk 0:32:57] } 29. Kh1 { [%eval 0.64] [%clk 0:11:52] } 29... Be7 { [%eval 0.59] [%clk 0:28:50] } 30. Qe3 { [%eval 0.65] [%clk 0:08:35] } 30... h4 { [%eval 0.96] [%clk 0:22:16] } 31. Nc2 { [%eval 0.91] [%clk 0:08:31] } 31... Rb8 { [%eval 0.95] [%clk 0:20:46] } 32. Qd2 { [%eval 0.92] [%clk 0:08:15] } 32... Ra8 { [%eval 1.04] [%clk 0:19:58] } 33. Ne3 { [%eval 0.92] [%clk 0:08:18] } 33... Be6 { [%eval 0.92] [%clk 0:16:29] } 34. Qb2 { [%eval 0.74] [%clk 0:07:47] } 34... f6 { [%eval 0.63] [%clk 0:14:14] } 35. Bxe6+ { [%eval 0.73] [%clk 0:05:50] } 35... Nxe6 { [%eval 0.63] [%clk 0:14:38] } 36. Qe2 { [%eval 0.71] [%clk 0:06:15] } 36... Nd4 { [%eval 0.64] [%clk 0:11:59] } 37. Qg4 { [%eval 0.67] [%clk 0:05:59] } 37... Kf7?! { [%eval 1.24] } { Inaccuracy. Kg7 was best. } { [%clk 0:11:13] } 38. Qxh4 { [%eval 1.2] [%clk 0:06:04] } 38... Bf8?! { [%eval 2.35] } { Inaccuracy. Kg7 was best. } { [%clk 0:10:46] } 39. Qg4?! { [%eval 1.41] } { Inaccuracy. Rd3 was best. } { [%clk 0:04:05] } 39... Rb8 { [%eval 1.33] [%clk 0:10:16] } 40. Nc4 { [%eval 1.05] [%clk 0:04:06] } 40... Rxb3 { [%eval 0.97] [%clk 0:10:00] } 41. Bxa5 { [%eval 1.08] [%clk 0:03:59] } 41... Qa7 { [%eval 1.31] [%clk 0:09:05] } 42. Rc1 { [%eval 1.37] [%clk 0:02:44] } 42... Be7?! { [%eval 2.25] } { Inaccuracy. Qe7 was best. } { [%clk 0:07:40] } 43. h4 { [%eval 1.85] [%clk 0:01:42] } 43... Rb8 { [%eval 2.19] [%clk 0:07:21] } 44. Kg1 { [%eval 1.94] [%clk 0:01:37] } 44... Nb3?! { [%eval 3.3] } { Inaccuracy. Rh8 was best. } { [%clk 0:06:54] } 45. Rd1? { [%eval 1.79] } { Mistake. h5 was best. } { [%clk 0:01:30] } 45... Nxa5?? { [%eval 4.2] } { Blunder. Nd4 was best. } { [%clk 0:06:50] } 46. Rd7?? { [%eval 0.19] } { Blunder. h5 was best. } { [%clk 0:00:52] } 46... Qxd7 { [%eval 0.34] [%clk 0:07:06] } 47. Nxe5+ { [%eval 0.0] [%clk 0:01:19] } 47... fxe5 { [%eval 0.0] [%clk 0:07:28] } 48. Qxd7 { [%eval 0.0] [%clk 0:01:47] } 48... Rb7 { [%eval 0.0] [%clk 0:06:02] } 49. Qg4 { [%eval 0.0] [%clk 0:01:30] } 49... c4 { [%eval 0.0] [%clk 0:06:09] } 50. h5 { [%eval 0.0] [%clk 0:01:56] } 50... gxh5 { [%eval 0.0] [%clk 0:06:27] } 51. Qxh5+ { [%eval 0.0] [%clk 0:02:24] } 51... Ke6 { [%eval 0.0] [%clk 0:06:20] } 52. Qg6+?? { [%eval -3.87] } { Blunder. Qh6+ was best. } { [%clk 0:01:32] } 52... Kd7 { [%eval -3.62] [%clk 0:06:35] } 53. Qf5+ { [%eval -4.01] [%clk 0:01:56] } 53... Kd6 { [%eval -3.74] [%clk 0:06:56] } 54. Qh3 { [%eval -3.93] [%clk 0:01:23] } 54... Nb3 { [%eval -4.08] [%clk 0:05:43] } 55. Qc3 { [%eval -3.8] [%clk 0:01:20] } 55... Kc5 { [%eval -3.9] [%clk 0:06:08] } 56. Qxe5+?! { [%eval -5.3] } { Inaccuracy. Kh2 was best. } { [%clk 0:01:41] } 56... Kb4 { [%eval -5.15] [%clk 0:06:32] } 57. Qe6 { [%eval -5.42] [%clk 0:01:16] } 57... Nc5 { [%eval -4.58] [%clk 0:04:54] } 58. Qxc6 { [%eval -5.37] [%clk 0:00:39] } 58... c3 { [%eval -5.55] [%clk 0:05:08] } 59. Qh6 { [%eval -5.53] [%clk 0:00:47] } 59... c2 { [%eval -5.38] [%clk 0:04:44] } 60. Qd2+ { [%eval -5.55] [%clk 0:01:08] } 60... Kb3 { [%eval -5.57] [%clk 0:05:03] } 61. Qe3+ { [%eval -5.83] [%clk 0:00:59] } 61... Kb2 { [%eval -6.11] [%clk 0:05:11] } 62. Qd4+ { [%eval -6.02] [%clk 0:00:56] } 62... Kb1 { [%eval -5.77] [%clk 0:05:32] } 0-1