Event: Biel Chess Festival 2025 MTO
Site: Biel, Switzerland
Date: 2025-07-16
White: Perreard, Nicolas
WhiteElo: 2100
Black: Tahay, Alexis
BlackTitle: IM
BlackElo: 2375
Result: 1/2-1/2
ECO: E11
Opening: Bogo-Indian Defense: Grünfeld Variation
Variant: Standard
TimeControl: 100 min 40 moves + 30 min Rest + 30 sec per move

1. d4 { [%eval 0.17] [%clk 1:40:58] } 1... Nf6 { [%eval 0.19] [%clk 1:39:54] } 2. c4 { [%eval 0.18] [%clk 1:41:22] } 2... e6 { [%eval 0.14] [%clk 1:40:22] } 3. Nf3 { [%eval 0.11] [%clk 1:41:39] } 3... Bb4+ { [%eval 0.54] [%clk 1:40:17] } 4. Nbd2 { [%eval 0.29] [%clk 1:42:02] } 4... O-O { [%eval 0.44] [%clk 1:40:04] } 5. a3 { [%eval 0.38] [%clk 1:40:36] } 5... Bxd2+ { [%eval 0.35] [%clk 1:39:03] } 6. Bxd2 { [%eval 0.41] [%clk 1:42:21] } 6... b6 { [%eval 0.56] [%clk 1:39:26] } 7. Bg5 { [%eval 0.45] [%clk 1:40:52] } 7... Bb7 { [%eval 0.55] [%clk 1:38:23] } 8. e3 { [%eval 0.54] [%clk 1:41:09] } 8... d6 { [%eval 0.52] [%clk 1:37:11] } 9. Be2 { [%eval 0.29] [%clk 1:38:51] } 9... Nbd7 { [%eval 0.33] [%clk 1:36:54] } 10. O-O { [%eval 0.29] [%clk 1:38:58] } 10... h6 { [%eval 0.35] [%clk 1:36:33] } 11. Bh4 { [%eval 0.29] [%clk 1:39:23] } 11... g5 { [%eval 0.27] [%clk 1:35:04] } 12. Bg3 { [%eval 0.3] [%clk 1:39:18] } 12... Ne4 { [%eval 0.26] [%clk 1:36:05] } 13. Nd2 { [%eval 0.27] [%clk 1:39:43] } 13... Nxg3 { [%eval 0.27] [%clk 1:34:57] } 14. hxg3 { [%eval 0.25] [%clk 1:33:56] } 14... e5 { [%eval 0.28] [%clk 1:33:44] } 15. d5 { [%eval 0.26] [%clk 1:29:36] } 15... f5 { [%eval 0.32] [%clk 1:31:55] } 16. e4 { [%eval 0.23] [%clk 1:38:20] } 16... f4 { [%eval 0.1] [%clk 1:25:23] } 17. g4?? { [%eval -1.58] } { Blunder. b4 was best. } { [%clk 1:38:42] } 17... Nf6 { [%eval -1.67] [%clk 1:23:33] } 18. Kh2 { [%eval -1.64] [%clk 1:35:50] } 18... Qd7 { [%eval -1.26] [%clk 1:22:26] } 19. Rh1 { [%eval -1.33] [%clk 1:38:17] } 19... Kg7 { [%eval -1.1] [%clk 1:22:12] } 20. Kg1 { [%eval -1.31] [%clk 1:35:19] } 20... Rh8 { [%eval -0.87] [%clk 1:21:35] } 21. b4 { [%eval -0.81] [%clk 1:37:40] } 21... a5?! { [%eval -0.22] } { Inaccuracy. c5 was best. } { [%clk 1:19:13] } 22. c5 { [%eval -0.36] [%clk 1:36:49] } 22... bxc5?! { [%eval 0.24] } { Inaccuracy. Qd8 was best. } { [%clk 1:17:00] } 23. bxc5 { [%eval 0.26] [%clk 1:38:10] } 23... dxc5 { [%eval 0.52] [%clk 1:16:52] } 24. Rc1 { [%eval 0.0] [%clk 1:37:41] } 24... c6 { [%eval -0.04] [%clk 1:13:52] } 25. Nc4?! { [%eval -0.8] } { Inaccuracy. Nb3 was best. } { [%clk 1:32:20] } 25... Rad8 { [%eval -0.32] [%clk 1:08:31] } 26. dxc6 { [%eval -0.67] [%clk 1:30:51] } 26... Bxc6?! { [%eval 0.0] } { Inaccuracy. Qxc6 was best. } { [%clk 1:02:06] } 27. Qxd7+ { [%eval 0.0] [%clk 1:30:57] } 27... Nxd7 { [%eval 0.01] [%clk 1:02:06] } 28. Nd6 { [%eval 0.0] [%clk 1:23:49] } 28... Kf6 { [%eval 0.0] [%clk 1:01:17] } 29. f3 { [%eval 0.0] [%clk 1:30:25] } 29... Nf8 { [%eval 0.0] [%clk 0:56:36] } 30. Nf5 { [%eval 0.0] [%clk 1:30:21] } 30... Ne6 { [%eval 0.0] [%clk 0:49:09] } 31. Bc4 { [%eval 0.0] [%clk 1:29:16] } 31... Nd4 { [%eval 0.0] [%clk 0:56:07] } 32. Rxh6+ { [%eval -0.16] [%clk 1:23:52] } 32... Rxh6 { [%eval -0.07] [%clk 0:56:35] } 33. Nxh6 { [%eval -0.24] [%clk 1:21:38] } 33... Rb8 { [%eval -0.18] [%clk 0:54:51] } 34. Nf5 { [%eval -0.66] [%clk 1:18:00] } 34... Rb2 { [%eval -0.81] [%clk 0:39:23] } 35. Bf1?! { [%eval -1.91] } { Inaccuracy. Bd3 was best. } { [%clk 1:16:31] } 35... Nb3?! { [%eval -0.94] } { Inaccuracy. Rc2 was best. } { [%clk 0:36:23] } 36. Rd1?? { [%eval -3.32] } { Blunder. Rc3 was best. } { [%clk 1:07:04] } 36... Nd2 { [%eval -3.23] [%clk 0:34:48] } 37. Nd6 { [%eval -2.72] [%clk 1:04:26] } 37... Ke7 { [%eval -3.44] [%clk 0:44:13] } 38. Nc4 { [%eval -3.39] [%clk 1:04:33] } 38... Nxc4 { [%eval -3.51] [%clk 0:44:36] } 39. Bxc4 { [%eval -3.46] [%clk 1:04:58] } 39... Rc2 { [%eval -2.84] [%clk 0:43:55] } 40. Bd5 { [%eval -3.59] [%clk 1:04:50] } 40... Ba4 { [%eval -3.6] [%clk 0:44:18] } 41. Rb1 { [%eval -4.26] [%clk 1:04:04] } 41... c4 { [%eval -4.21] [%clk 0:44:09] } 42. Rb7+ { [%eval -4.12] [%clk 1:04:32] } 42... Kd6 { [%eval -4.02] [%clk 0:43:18] } 43. Ra7 { [%eval -4.62] [%clk 0:56:52] } 43... Rc1+ { [%eval -4.79] [%clk 0:35:55] } 44. Kh2 { [%eval -4.05] [%clk 1:03:54] } 44... c3 { [%eval -4.5] [%clk 0:36:04] } 45. Ra6+ { [%eval -5.04] [%clk 1:04:09] } 45... Ke7 { [%eval -4.91] [%clk 0:27:40] } 46. Ra7+ { [%eval -4.39] [%clk 0:58:34] } 46... Bd7?? { [%eval -0.17] } { Blunder. Kd6 was best. } { [%clk 0:34:23] } 47. Bb3 { [%eval -0.26] [%clk 0:58:49] } 47... Kd6 { [%eval -0.2] [%clk 0:33:42] } 48. Ra6+ { [%eval -0.25] [%clk 0:57:32] } 48... Kc5 { [%eval 0.0] [%clk 0:33:07] } 49. Rxa5+ { [%eval -0.12] [%clk 0:58:13] } 49... Kb6 { [%eval -0.16] [%clk 0:32:53] } 50. Rd5?? { [%eval -2.94] } { Blunder. Rxe5 was best. } { [%clk 0:57:23] } 50... Bc6?? { [%eval 0.0] } { Blunder. Rb1 was best. } { [%clk 0:33:52] } 51. Rxe5 { [%eval 0.0] [%clk 0:55:52] } 51... Rb1 { [%eval 0.0] [%clk 0:33:52] } 52. Bc2 { [%eval -0.01] [%clk 0:55:59] } 52... Rb2 { [%eval 0.0] [%clk 0:34:17] } 53. Bd1 { [%eval 0.0] [%clk 0:55:33] } 53... Bb5 { [%eval 0.0] [%clk 0:31:15] } 54. a4 { [%eval -0.07] [%clk 0:51:33] } 54... Bf1 { [%eval -0.01] [%clk 0:33:39] } 55. Kg1?? { [%eval -3.92] } { Blunder. a5+ was best. } { [%clk 0:48:27] } 55... Rb1 { [%eval -3.94] [%clk 0:31:41] } 56. Bc2 { [%eval -3.7] [%clk 0:49:02] } 56... Rc1 { [%eval -3.43] [%clk 0:30:58] } 57. Bb3 { [%eval -3.42] [%clk 0:43:29] } 57... Bc4+ { [%eval -3.9] [%clk 0:26:45] } 58. Kh2 { [%eval -3.39] [%clk 0:48:37] } 58... Bxb3 { [%eval -3.15] [%clk 0:27:14] } 59. Rb5+ { [%eval -2.69] [%clk 0:49:01] } 59... Ka6?? { [%eval 0.0] } { Blunder. Kc6 was best. } { [%clk 0:27:43] } 60. Rxb3 { [%eval 0.0] [%clk 0:49:21] } 60... Ka5 { [%eval 0.0] [%clk 0:23:09] } 61. Rb5+ { [%eval 0.0] [%clk 0:42:51] } 61... Kxa4 { [%eval 0.0] [%clk 0:28:40] } 62. Rxg5 { [%eval 0.0] [%clk 0:41:33] } 62... Rf1 { [%eval 0.0] [%clk 0:25:47] } 63. Rc5 { [%eval 0.0] [%clk 0:41:48] } 63... Kb3?? { [%eval 2.24] } { Blunder. Kb4 was best. } { [%clk 0:26:16] } 64. g5 { [%eval 2.14] [%clk 0:40:20] } 64... c2 { [%eval 2.2] [%clk 0:26:40] } 65. Kh3 { [%eval 2.12] [%clk 0:40:36] } 65... c1=Q { [%eval 2.11] [%clk 0:26:46] } 66. Rxc1 { [%eval 2.08] [%clk 0:40:26] } 66... Rxc1 { [%eval 2.04] [%clk 0:27:14] } 67. Kg4 { [%eval 1.93] [%clk 0:41:16] } 67... Rg1 { [%eval 2.31] [%clk 0:23:52] } 68. Kf5?? { [%eval 0.0] } { Blunder. Kxf4 was best. } { [%clk 0:35:44] } 68... Kc4 { [%eval 0.0] [%clk 0:27:14] } 69. g6 { [%eval 0.0] [%clk 0:35:29] } 69... Rxg2 { [%eval 0.0] [%clk 0:27:30] } 70. Kf6 { [%eval 0.0] [%clk 0:34:01] } 70... Kd4 { [%eval 0.0] [%clk 0:27:20] } 71. g7 { [%eval 0.0] [%clk 0:33:28] } 71... Ke3 { [%eval 0.0] [%clk 0:27:15] } 72. e5 { [%eval 0.0] [%clk 0:33:15] } 72... Kxf3 { [%eval 0.0] [%clk 0:27:38] } 73. e6 { [%eval 0.0] [%clk 0:33:06] } 73... Rxg7 { [%eval 0.0] [%clk 0:28:04] } 74. Kxg7 { [%eval 0.0] [%clk 0:33:16] } 74... Kg2 { [%eval 0.0] [%clk 0:28:33] } 75. e7 { [%eval 0.0] [%clk 0:33:39] } 75... f3 { [%eval 0.0] [%clk 0:29:01] } 76. e8=Q { [%eval 0.0] [%clk 0:34:05] } 76... f2 { [%eval 0.0] [%clk 0:29:29] } 77. Qe2 { [%eval 0.0] [%clk 0:34:12] } 77... Kg1 { [%clk 0:29:56] } 78. Qxf2+ { [%clk 0:34:28] } 78... Kxf2 { [%clk 0:30:24] } 1/2-1/2