Event: Biel Chess Festival 2025 MTO
Site: Biel, Switzerland
Date: 2025-07-23
White: Dau Khuong Duy
WhiteTitle: IM
WhiteElo: 2456
Black: Bok, Benjamin
BlackTitle: GM
BlackElo: 2593
Result: 0-1
ECO: C84
Opening: Ruy Lopez: Closed, Martinez Variation
Variant: Standard
TimeControl: 100 min 40 moves + 30 min Rest + 30 sec per move

1. e4 { [%eval 0.18] [%clk 1:40:55] } 1... e5 { [%eval 0.22] [%clk 1:37:38] } 2. Nf3 { [%eval 0.13] [%clk 1:41:15] } 2... Nc6 { [%eval 0.21] [%clk 1:38:03] } 3. Bb5 { [%eval 0.15] [%clk 1:41:40] } 3... a6 { [%eval 0.21] [%clk 1:38:29] } 4. Ba4 { [%eval 0.11] [%clk 1:42:04] } 4... Nf6 { [%eval 0.28] [%clk 1:38:46] } 5. O-O { [%eval 0.13] [%clk 1:42:16] } 5... Be7 { [%eval 0.24] [%clk 1:39:05] } 6. d3 { [%eval 0.15] [%clk 1:41:12] } 6... d6 { [%eval 0.21] [%clk 1:38:57] } 7. c3 { [%eval 0.23] [%clk 1:39:09] } 7... O-O { [%eval 0.27] [%clk 1:39:04] } 8. Re1 { [%eval 0.33] [%clk 1:38:39] } 8... Re8 { [%eval 0.39] [%clk 1:39:13] } 9. Nbd2 { [%eval 0.33] [%clk 1:37:46] } 9... Bf8 { [%eval 0.29] [%clk 1:38:03] } 10. Nf1 { [%eval 0.25] [%clk 1:35:06] } 10... h6 { [%eval 0.24] [%clk 1:28:47] } 11. Ng3 { [%eval 0.36] [%clk 1:32:59] } 11... b5 { [%eval 0.31] [%clk 1:28:04] } 12. Bc2 { [%eval 0.15] [%clk 1:32:38] } 12... d5 { [%eval 0.14] [%clk 1:01:53] } 13. h3 { [%eval -0.06] [%clk 1:07:55] } 13... Bb7 { [%eval 0.12] [%clk 0:59:15] } 14. Be3 { [%eval -0.05] [%clk 1:05:20] } 14... Nb8 { [%eval -0.02] [%clk 1:10:42] } 15. exd5 { [%eval 0.05] [%clk 0:44:51] } 15... Qxd5 { [%eval 0.12] [%clk 0:58:18] } 16. Ne4 { [%eval 0.16] [%clk 0:44:02] } 16... Nbd7 { [%eval 0.38] [%clk 0:54:24] } 17. Nxf6+?! { [%eval -0.21] } { Inaccuracy. Bb3 was best. } { [%clk 0:38:39] } 17... Nxf6 { [%eval -0.21] [%clk 0:54:40] } 18. Bb3 { [%eval -0.2] [%clk 0:38:22] } 18... Qc6 { [%eval -0.13] [%clk 0:51:16] } 19. d4 { [%eval -0.3] [%clk 0:38:13] } 19... Rad8 { [%eval -0.21] [%clk 0:49:49] } 20. Qc2 { [%eval -0.29] [%clk 0:08:16] } 20... exd4 { [%eval -0.24] [%clk 0:25:53] } 21. Bxd4 { [%eval -0.26] [%clk 0:27:50] } 21... Ne4 { [%eval -0.24] [%clk 0:24:11] } 22. Be3 { [%eval -0.37] [%clk 0:26:25] } 22... Qf6 { [%eval -0.42] [%clk 0:14:55] } 23. Rad1 { [%eval -0.42] [%clk 0:25:22] } 23... c5 { [%eval -0.21] [%clk 0:12:15] } 24. Rxd8 { [%eval -0.22] [%clk 0:25:29] } 24... Rxd8 { [%eval -0.23] [%clk 0:11:52] } 25. Qe2 { [%eval -0.18] [%clk 0:24:30] } 25... Re8 { [%eval -0.21] [%clk 0:11:12] } 26. Rd1 { [%eval -0.3] [%clk 0:22:13] } 26... Nd6 { [%eval -0.36] [%clk 0:09:34] } 27. Nh2 { [%eval -0.58] [%clk 0:14:49] } 27... c4 { [%eval -0.51] [%clk 0:08:29] } 28. Bc2 { [%eval -0.41] [%clk 0:15:12] } 28... Nf5 { [%eval -0.35] [%clk 0:08:44] } 29. Bxf5 { [%eval -0.45] [%clk 0:13:48] } 29... Qxf5 { [%eval -0.41] [%clk 0:09:12] } 30. Nf1 { [%eval -0.4] [%clk 0:13:59] } 30... Qe4 { [%eval -0.45] [%clk 0:05:29] } 31. Qg4 { [%eval -0.4] [%clk 0:13:59] } 31... Qc6 { [%eval -0.48] [%clk 0:04:45] } 32. Nh2 { [%eval -0.95] [%clk 0:11:35] } 32... Re6 { [%eval -0.85] [%clk 0:03:38] } 33. Qf3 { [%eval -1.03] [%clk 0:09:20] } 33... Qc8 { [%eval -0.96] [%clk 0:03:05] } 34. Qh5 { [%eval -0.99] [%clk 0:08:59] } 34... Rd6?! { [%eval -0.18] } { Inaccuracy. Bd6 was best. } { [%clk 0:00:39] } 35. Bd4?? { [%eval -1.96] } { Blunder. Rxd6 was best. } { [%clk 0:04:46] } 35... Qe6 { [%eval -1.49] [%clk 0:00:54] } 36. Qg4?! { [%eval -2.67] } { Inaccuracy. Rf1 was best. } { [%clk 0:04:13] } 36... Qe8 { [%eval -2.65] [%clk 0:00:51] } 37. Qf4?! { [%eval -3.69] } { Inaccuracy. Qf5 was best. } { [%clk 0:02:08] } 37... Rg6 { [%eval -3.54] [%clk 0:00:48] } 38. Ng4 { [%eval -3.4] [%clk 0:02:13] } 38... Bd6 { [%eval -3.47] [%clk 0:00:39] } 39. Qe3?! { [%eval -4.6] } { Inaccuracy. Be5 was best. } { [%clk 0:01:09] } 39... Re6 { [%eval -4.06] [%clk 0:00:35] } 40. Qc1 { [%eval -4.85] [%clk 0:00:48] } 40... f5 { [%eval -4.73] [%clk 0:00:37] } 41. Ne3 { [%eval -4.93] [%clk 0:27:41] } 41... Qg6 { [%eval -4.65] [%clk 0:18:05] } 42. f3 { [%eval -5.27] [%clk 0:23:49] } 42... Bxf3 { [%eval -5.35] [%clk 0:08:03] } 43. Rd2 { [%eval -5.23] [%clk 0:24:09] } 43... f4 { [%eval -5.34] [%clk 0:07:07] } 44. Nf5 { [%eval -6.04] [%clk 0:19:05] } 44... Qxf5 { [%eval -5.95] [%clk 0:04:42] } 45. gxf3 { [%eval -5.92] [%clk 0:19:29] } 45... Qxh3 { [%eval -5.14] [%clk 0:04:06] } 46. Rg2 { [%eval -4.33] [%clk 0:19:52] } 46... Be5 { [%eval -4.19] [%clk 0:04:00] } 47. Bxe5 { [%eval -4.33] [%clk 0:19:50] } 47... Rxe5 { [%eval -4.34] [%clk 0:04:29] } 48. Qxf4 { [%eval -4.31] [%clk 0:20:07] } 48... Re1+ { [%eval -4.38] [%clk 0:03:46] } 49. Kf2 { [%eval -4.35] [%clk 0:20:32] } 49... Re2+ { [%eval -4.37] [%clk 0:04:47] } 50. Kxe2 { [%eval -4.35] [%clk 0:20:58] } 50... Qxg2+ { [%eval -4.25] [%clk 0:05:15] } 51. Ke3 { [%eval -4.38] [%clk 0:20:42] } 51... Qxb2 { [%eval -3.87] [%clk 0:05:17] } 52. Qe5 { [%eval -4.19] [%clk 0:20:48] } 52... Qc1+ { [%eval -3.89] [%clk 0:03:11] } 53. Ke2 { [%eval -4.3] [%clk 0:19:23] } 53... Qc2+ { [%eval -4.44] [%clk 0:03:09] } 54. Ke3 { [%eval -4.28] [%clk 0:19:35] } 54... Qd3+ { [%eval -4.19] [%clk 0:02:51] } 55. Kf2 { [%eval -4.09] [%clk 0:20:00] } 55... Kh7 { [%eval -4.04] [%clk 0:01:14] } 56. a3 { [%eval -4.26] [%clk 0:19:05] } 56... Qd2+ { [%eval -4.23] [%clk 0:01:31] } 57. Kf1 { [%eval -4.13] [%clk 0:20:36] } 57... Qc2 { [%eval -3.8] [%clk 0:01:15] } 58. f4?! { [%eval -4.76] } { Inaccuracy. Kg1 was best. } { [%clk 0:20:29] } 58... Qg6 { [%eval -4.66] [%clk 0:01:04] } 59. Kf2 { [%eval -4.86] [%clk 0:19:26] } 59... h5 { [%eval -5.3] [%clk 0:01:21] } 60. f5 { [%eval -5.24] [%clk 0:18:23] } 60... Qf6 { [%eval -5.05] [%clk 0:01:17] } 61. Qe4 { [%eval -5.23] [%clk 0:17:48] } 61... g6 { [%eval -4.91] [%clk 0:00:03] } 62. Ke2 { [%eval -5.54] [%clk 0:16:57] } 62... Qxf5 { [%eval -5.75] [%clk 0:00:51] } 63. Qb7+ { [%eval -6.52] [%clk 0:17:10] } 63... Kh6 { [%eval -5.86] [%clk 0:01:20] } 64. Qxa6 { [%eval -7.0] [%clk 0:17:33] } 64... Qc2+ { [%eval -6.81] [%clk 0:00:57] } 65. Kf1 { [%eval -6.44] [%clk 0:17:55] } 65... Qxc3 { [%eval -5.83] [%clk 0:00:39] } 66. Qxb5?! { [%eval -9.58] } { Inaccuracy. Qa8 was best. } { [%clk 0:18:19] } 66... Qd3+ { [%eval -8.9] [%clk 0:00:38] } 67. Kg1 { [%eval -8.65] [%clk 0:17:52] } 67... Qd4+ { [%eval -8.53] [%clk 0:00:43] } 68. Kf1 { [%eval -7.85] [%clk 0:18:09] } 68... Qf4+ { [%eval -63.59] [%clk 0:00:44] } 69. Ke2 { [%eval -14.62] [%clk 0:18:17] } 69... Qe4+ { [%eval -10.36] [%clk 0:00:49] } 70. Kd2 { [%eval -8.35] [%clk 0:18:00] } 70... Qd3+ { [%eval -9.07] [%clk 0:00:57] } 71. Ke1 { [%eval -9.78] [%clk 0:18:34] } 71... Qe3+ { [%eval -9.09] [%clk 0:00:51] } 72. Kf1 { [%eval -8.66] [%clk 0:18:34] } 72... c3 { [%eval -7.73] [%clk 0:00:35] } 73. Qb8? { [%eval #-14] } { Checkmate is now unavoidable. Qb4 was best. } { [%clk 0:18:48] } 73... Qc1+ { [%clk 0:00:43] } 0-1