Event: Biel Chess Festival 2025 WT 1
Site: Biel, Switzerland
Date: 2025-07-25
White: Buntschu, Kurt
WhiteElo: 1762
Black: Ben Avi, Adam
BlackElo: 1643
Result: 1-0
ECO: A46
Opening: Indian Defense: London System
Variant: Standard
TimeControl: 60' + 30'' / move

1. d4 { [%eval 0.17] [%clk 1:00:13] } 1... e6 { [%eval 0.37] [%clk 1:00:22] } 2. Nf3 { [%eval 0.08] [%clk 0:59:28] } 2... Nf6 { [%eval 0.14] [%clk 0:58:37] } 3. Bf4 { [%eval 0.03] [%clk 0:58:12] } 3... Bd6 { [%eval 0.35] [%clk 0:55:04] } 4. Bxd6 { [%eval 0.36] [%clk 0:55:13] } 4... cxd6 { [%eval 0.4] [%clk 0:54:56] } 5. Nbd2 { [%eval 0.15] [%clk 0:54:28] } 5... d5 { [%eval 0.07] [%clk 0:55:05] } 6. e3 { [%eval 0.04] [%clk 0:52:58] } 6... b6 { [%eval 0.15] [%clk 0:54:38] } 7. Bd3 { [%eval 0.07] [%clk 0:52:25] } 7... Ba6 { [%eval 0.17] [%clk 0:54:07] } 8. Qe2 { [%eval 0.0] [%clk 0:52:28] } 8... Bxd3 { [%eval 0.03] [%clk 0:54:18] } 9. cxd3 { [%eval -0.13] [%clk 0:52:49] } 9... Nc6 { [%eval -0.08] [%clk 0:50:48] } 10. O-O { [%eval -0.07] [%clk 0:52:57] } 10... O-O { [%eval -0.08] [%clk 0:49:26] } 11. e4 { [%eval -0.54] [%clk 0:52:08] } 11... dxe4 { [%eval -0.09] [%clk 0:48:23] } 12. dxe4 { [%eval -0.13] [%clk 0:51:15] } 12... d6 { [%eval 0.0] [%clk 0:46:19] } 13. Rac1 { [%eval -0.05] [%clk 0:48:01] } 13... Rc8 { [%eval 0.0] [%clk 0:43:26] } 14. Qb5 { [%eval -0.1] [%clk 0:45:51] } 14... Qd7 { [%eval 0.0] [%clk 0:41:20] } 15. Rfd1 { [%eval -0.23] [%clk 0:47:10] } 15... Ne7 { [%eval -0.06] [%clk 0:33:14] } 16. Qe2 { [%eval -0.32] [%clk 0:45:35] } 16... Ng6 { [%eval -0.06] [%clk 0:29:45] } 17. g3 { [%eval -0.09] [%clk 0:45:24] } 17... Rxc1 { [%eval -0.06] [%clk 0:37:58] } 18. Rxc1 { [%eval -0.1] [%clk 0:31:56] } 18... e5 { [%eval 0.14] [%clk 0:37:42] } 19. d5 { [%eval 0.2] [%clk 0:41:57] } 19... Rc8 { [%eval 0.12] [%clk 0:33:57] } 20. Rxc8+ { [%eval 0.16] [%clk 0:42:25] } 20... Qxc8 { [%eval 0.19] [%clk 0:31:28] } 21. Nc4 { [%eval 0.05] [%clk 0:42:29] } 21... Qa6 { [%eval 0.29] [%clk 0:25:19] } 22. Qc2 { [%eval 0.25] [%clk 0:41:28] } 22... b5 { [%eval 0.31] [%clk 0:23:51] } 23. Ne3 { [%eval 0.28] [%clk 0:39:36] } 23... Ne7?? { [%eval 4.31] } { Blunder. Ne8 was best. } { [%clk 0:19:59] } 24. Qc7 { [%eval 4.25] [%clk 0:39:21] } 24... Kf8 { [%eval 5.22] [%clk 0:18:55] } 25. Qd8+ { [%eval 5.19] [%clk 0:12:14] } 25... Ne8 { [%eval 5.15] [%clk 0:34:09] } 26. Ng5 { [%eval 4.82] [%clk 0:12:34] } 26... f6?? { [%eval #8] } { Checkmate is now unavoidable. Qxa2 was best. } { [%clk 0:15:12] } 27. Ne6+ { [%eval #8] [%clk 0:12:46] } 27... Kf7 { [%eval #8] [%clk 0:15:01] } 28. Qd7?? { [%eval 2.89] } { Lost forced checkmate sequence. Nf5 was best. } { [%clk 0:12:21] } 28... Qc8 { [%eval 3.3] [%clk 0:13:32] } 29. Qxa7 { [%eval 3.37] [%clk 0:12:16] } 29... Qc1+ { [%eval 3.34] [%clk 0:13:27] } 30. Kg2 { [%eval 3.27] [%clk 0:09:49] } 30... Qb1 { [%eval 3.08] [%clk 0:13:02] } 31. Kf3?! { [%eval 2.26] } { Inaccuracy. h3 was best. } { [%clk 0:10:03] } 31... Qh1+ { [%eval 2.23] [%clk 0:29:57] } 32. Ke2 { [%eval 2.2] [%clk 0:08:46] } 32... Qxe4 { [%eval 2.1] [%clk 0:29:52] } 33. Qd7 { [%eval 2.16] [%clk 0:05:56] } 33... Qg6?! { [%eval 3.51] } { Inaccuracy. Qb1 was best. } { [%clk 0:27:34] } 34. Qxb5 { [%eval 3.44] [%clk 0:03:14] } 34... f5 { [%eval 3.42] [%clk 0:26:11] } 35. Qd7 { [%eval 3.34] [%clk 0:06:11] } 35... e4?! { [%eval 4.45] } { Inaccuracy. f4 was best. } { [%clk 0:25:38] } 36. Nf4?! { [%eval 3.16] } { Inaccuracy. Nd8+ was best. } { [%clk 0:00:30] } 36... Qf6 { [%eval 2.69] [%clk 0:25:38] } 37. Qe6+ { [%eval 2.61] [%clk 0:00:51] } 37... Qxe6 { [%eval 2.36] [%clk 0:25:57] } 38. Nxe6 { [%eval 2.16] [%clk 0:00:57] } 38... Nxd5?? { [%eval 5.26] } { Blunder. Kf6 was best. } { [%clk 0:25:53] } 39. Nd8+?! { [%eval 4.07] } { Inaccuracy. Ng5+ was best. } { [%clk 0:00:40] } 39... Ke7 { [%eval 3.87] [%clk 0:25:16] } 40. Nxd5+ { [%eval 3.67] [%clk 0:02:05] } 40... Kxd8 { [%eval 3.41] [%clk 0:21:43] } 41. f3?? { [%eval 0.38] } { Blunder. a4 was best. } { [%clk 0:02:23] } 41... Kd7?? { [%eval 3.91] } { Blunder. Nc7 was best. } { [%clk 0:20:14] } 42. fxe4 { [%eval 3.73] [%clk 0:02:42] } 42... fxe4 { [%eval 4.35] [%clk 0:20:33] } 43. Ke3 { [%eval 4.12] [%clk 0:02:31] } 43... Ke6 { [%eval 5.16] [%clk 0:19:57] } 44. Kxe4 { [%eval 5.05] [%clk 0:03:20] } 44... Nf6+?! { [%eval 6.89] } { Inaccuracy. Kd7 was best. } { [%clk 0:20:09] } 45. Nxf6 { [%eval 6.57] [%clk 0:03:39] } 45... gxf6 { [%eval 7.25] [%clk 0:20:26] } 46. a4 { [%eval 7.24] [%clk 0:04:06] } 46... h5 { [%eval 7.77] [%clk 0:19:55] } 47. a5 { [%eval 7.04] [%clk 0:04:29] } 47... d5+? { [%eval #28] } { Checkmate is now unavoidable. f5+ was best. } { [%clk 0:20:12] } 48. Kd4 { [%eval 12.67] [%clk 0:04:51] } 48... Kd6?! { [%eval #18] } { Checkmate is now unavoidable. h4 was best. } { [%clk 0:20:24] } 49. b4 { [%eval #18] [%clk 0:04:56] } 49... Kc6 { [%eval #19] [%clk 0:20:43] } 50. a6 { [%eval 10.98] [%clk 0:05:12] } 50... f5?! { [%eval #14] } { Checkmate is now unavoidable. h4 was best. } { [%clk 0:21:06] } 51. b5+ { [%eval #15] [%clk 0:05:31] } 51... Kb6 { [%eval #16] [%clk 0:20:54] } 52. Kxd5 { [%eval #19] [%clk 0:05:53] } 52... Kc7 { [%eval #11] [%clk 0:20:44] } 53. a7 { [%eval #10] [%clk 0:06:07] } 53... Kb7 { [%eval #10] [%clk 0:21:26] } 54. b6 { [%eval #9] [%clk 0:06:21] } 54... Ka8 { [%eval #5] [%clk 0:21:51] } 55. Ke5 { [%eval #10] [%clk 0:06:56] } 55... Kb7 { [%eval #11] [%clk 0:21:58] } 56. Kxf5 { [%eval #11] [%clk 0:07:12] } 56... Ka8 { [%eval #11] [%clk 0:22:21] } 57. Kg5 { [%eval #10] [%clk 0:07:34] } 57... h4 { [%eval #9] [%clk 0:22:45] } 58. gxh4 { [%eval #8] [%clk 0:07:55] } 58... Kb7 { [%eval #8] [%clk 0:23:06] } 59. h5 { [%eval #7] [%clk 0:08:16] } 59... Ka8 { [%eval #7] [%clk 0:23:31] } 60. h6 { [%eval #6] [%clk 0:08:42] } 60... Kb7 { [%eval #6] [%clk 0:24:00] } 61. h7 { [%eval #5] [%clk 0:08:58] } 61... Ka8 { [%eval #4] [%clk 0:24:28] } 62. h8=Q+ { [%eval #3] [%clk 0:09:09] } 62... Kb7 { [%eval #3] [%clk 0:24:54] } 63. Qb8+ { [%eval #4] [%clk 0:08:53] } 63... Ka6 { [%eval #4] [%clk 0:25:14] } 64. a8=Q+ { [%eval #3] [%clk 0:09:11] } 64... Kb5 { [%eval #3] [%clk 0:25:47] } 65. Qe5+ { [%eval #2] [%clk 0:09:10] } 65... Kxb6 { [%eval #1] [%clk 0:26:08] } 66. Qd6+ { [%clk 0:09:05] } 66... Kb5 { [%clk 0:26:34] } 67. Qaa6# { [%clk 0:07:03] } 1-0