Event: Biel Chess Festival 2025 WT 1
Site: Biel, Switzerland
Date: 2025-07-24
White: Boesch, Roman
WhiteElo: 1780
Black: Studer, Jonas
Result: 1-0
ECO: E94
Opening: King's Indian Defense: Orthodox Variation, Positional Defense, Closed Line
Variant: Standard
TimeControl: 60' + 30'' / move

1. d4 { [%eval 0.17] [%clk 1:00:59] } 1... Nf6 { [%eval 0.19] [%clk 1:00:23] } 2. c4 { [%eval 0.18] [%clk 1:01:24] } 2... g6 { [%eval 0.28] [%clk 1:00:35] } 3. Nc3 { [%eval 0.18] [%clk 1:01:50] } 3... Bg7 { [%eval 0.51] [%clk 1:00:55] } 4. e4 { [%eval 0.4] [%clk 1:02:12] } 4... O-O { [%eval 0.53] [%clk 1:01:16] } 5. Nf3 { [%eval 0.39] [%clk 1:02:36] } 5... d6 { [%eval 0.44] [%clk 1:01:27] } 6. Be2 { [%eval 0.45] [%clk 1:02:54] } 6... e5 { [%eval 0.39] [%clk 1:01:34] } 7. d5 { [%eval 0.31] [%clk 1:02:27] } 7... Nbd7 { [%eval 0.58] [%clk 0:57:24] } 8. O-O { [%eval 0.24] [%clk 1:02:35] } 8... Ne8 { [%eval 0.49] [%clk 0:57:42] } 9. Bg5 { [%eval 0.34] [%clk 1:01:22] } 9... f6 { [%eval 0.31] [%clk 0:57:58] } 10. Bh4 { [%eval 0.2] [%clk 1:00:57] } 10... Rf7 { [%eval 0.43] [%clk 0:56:18] } 11. Ne1 { [%eval 0.48] [%clk 0:59:22] } 11... Bf8 { [%eval 0.52] [%clk 0:54:07] } 12. Bg4 { [%eval 0.45] [%clk 1:00:35] } 12... Rg7 { [%eval 0.72] [%clk 0:55:56] } 13. Be6+ { [%eval 0.74] [%clk 0:53:11] } 13... Kh8 { [%eval 0.74] [%clk 0:54:17] } 14. f4? { [%eval -0.64] } { Mistake. a4 was best. } { [%clk 0:49:33] } 14... Qe7?? { [%eval 2.42] } { Blunder. exf4 was best. } { [%clk 0:48:37] } 15. Qg4?? { [%eval -1.0] } { Blunder. f5 was best. } { [%clk 0:46:33] } 15... Nb6?? { [%eval 2.19] } { Blunder. exf4 was best. } { [%clk 0:49:25] } 16. c5 { [%eval 2.14] [%clk 0:40:23] } 16... Bxe6?! { [%eval 2.83] } { Inaccuracy. Nd7 was best. } { [%clk 0:47:34] } 17. dxe6 { [%eval 2.6] [%clk 0:40:11] } 17... Nc4?! { [%eval 3.92] } { Inaccuracy. dxc5 was best. } { [%clk 0:46:49] } 18. Nd5 { [%eval 3.81] [%clk 0:36:50] } 18... Qd8 { [%eval 3.26] [%clk 0:45:14] } 19. Qe2 { [%eval 3.66] [%clk 0:34:56] } 19... Na5 { [%eval 4.06] [%clk 0:43:56] } 20. fxe5 { [%eval 3.81] [%clk 0:32:43] } 20... g5 { [%eval 4.56] [%clk 0:44:19] } 21. exf6 { [%eval 4.4] [%clk 0:28:17] } 21... Nxf6 { [%eval 4.41] [%clk 0:44:30] } 22. Nxf6?! { [%eval 3.29] } { Inaccuracy. Bg3 was best. } { [%clk 0:23:35] } 22... gxh4 { [%eval 2.85] [%clk 0:44:19] } 23. Nd3 { [%eval 2.42] [%clk 0:19:18] } 23... Nc6 { [%eval 2.47] [%clk 0:42:39] } 24. Qe3 { [%eval 2.35] [%clk 0:15:01] } 24... Be7 { [%eval 2.37] [%clk 0:40:01] } 25. Qh6?? { [%eval 0.41] } { Blunder. Nd5 was best. } { [%clk 0:13:52] } 25... Bxf6?! { [%eval 1.46] } { Inaccuracy. dxc5 was best. } { [%clk 0:39:06] } 26. Rxf6 { [%eval 1.56] [%clk 0:14:16] } 26... Qg8?? { [%eval 4.28] } { Blunder. dxc5 was best. } { [%clk 0:39:24] } 27. Nf4 { [%eval 4.56] [%clk 0:13:37] } 27... Ne5 { [%eval 4.46] [%clk 0:39:21] } 28. h3 { [%eval 4.44] [%clk 0:11:21] } 28... Rf8 { [%eval 5.36] [%clk 0:36:21] } 29. Rxf8 { [%eval 5.41] [%clk 0:11:10] } 29... Qxf8 { [%eval 5.51] [%clk 0:36:41] } 30. Rf1 { [%eval 5.39] [%clk 0:11:21] } 30... Rxg2+ { [%eval 5.36] [%clk 0:36:58] } 31. Nxg2 { [%eval 5.5] [%clk 0:10:46] } 31... Qxh6 { [%eval 5.35] [%clk 0:37:22] } 32. e7 { [%eval 5.41] [%clk 0:10:44] } 32... Qh5 { [%eval 6.0] [%clk 0:35:26] } 33. Rf8+ { [%eval 5.91] [%clk 0:10:42] } 33... Kg7 { [%eval 5.84] [%clk 0:35:51] } 34. e8=Q { [%eval 5.83] [%clk 0:09:48] } 34... Qd1+ { [%eval 6.47] [%clk 0:35:30] } 35. Kh2 { [%eval 6.58] [%clk 0:09:20] } 35... Nf3+ { [%eval 6.48] [%clk 0:29:20] } 36. Rxf3 { [%eval 6.4] [%clk 0:09:41] } 36... Qxf3 { [%eval 6.44] [%clk 0:29:48] } 37. Qd7+ { [%eval 5.93] [%clk 0:09:47] } 37... Kh6 { [%eval 6.38] [%clk 0:29:59] } 38. Qe6+ { [%eval 6.5] [%clk 0:10:07] } 38... Kg7 { [%eval 5.56] [%clk 0:30:09] } 39. Qg4+ { [%eval 5.47] [%clk 0:10:28] } 39... Qxg4 { [%eval 5.4] [%clk 0:30:09] } 40. hxg4 { [%eval 5.11] [%clk 0:10:05] } 40... Kf6 { [%eval 5.93] [%clk 0:30:24] } 41. cxd6 { [%eval 5.78] [%clk 0:10:49] } 41... cxd6 { [%eval 5.57] [%clk 0:30:38] } 42. Ne1 { [%eval 4.81] [%clk 0:10:22] } 42... Ke5 { [%eval 5.37] [%clk 0:31:00] } 43. Kh3 { [%eval 5.15] [%clk 0:10:34] } 43... Kxe4 { [%eval 4.96] [%clk 0:31:23] } 44. Kxh4 { [%eval 4.89] [%clk 0:10:53] } 44... Ke5 { [%eval 5.56] [%clk 0:31:30] } 45. Kh5 { [%eval 5.27] [%clk 0:11:03] } 45... Kf6?! { [%eval 6.89] } { Inaccuracy. d5 was best. } { [%clk 0:31:58] } 46. Nf3 { [%eval 6.78] [%clk 0:11:10] } 46... Kg7 { [%eval 6.72] [%clk 0:32:08] } 47. Nd4 { [%eval 6.22] [%clk 0:11:27] } 47... d5 { [%eval 6.92] [%clk 0:31:39] } 48. g5 { [%eval 6.6] [%clk 0:11:21] } 48... Kg8 { [%eval 7.45] [%clk 0:31:35] } 49. Kh6 { [%eval 7.18] [%clk 0:11:12] } 49... Kh8 { [%eval 6.68] [%clk 0:31:13] } 50. Ne6 { [%eval 7.21] [%clk 0:11:07] } 50... Kg8 { [%eval 7.74] [%clk 0:32:05] } 51. a4 { [%eval 7.47] [%clk 0:10:35] } 51... Kh8 { [%eval 8.52] [%clk 0:31:23] } 52. g6 { [%eval 8.34] [%clk 0:10:30] } 52... hxg6 { [%eval 10.76] [%clk 0:31:42] } 53. Kxg6 { [%eval 10.02] [%clk 0:10:54] } 53... Kg8 { [%eval 9.94] [%clk 0:32:00] } 54. Kf6 { [%eval 9.04] [%clk 0:10:45] } 54... d4 { [%eval 10.26] [%clk 0:31:55] } 55. Nxd4 { [%eval #26] [%clk 0:11:23] } 55... Kf8 { [%eval #26] } 56. Ke6 { [%eval 83.08] [%clk 0:10:55] } 56... Ke8?! { [%eval #26] } { Checkmate is now unavoidable. a6 was best. } { [%clk 0:32:45] } 57. Kd6 { [%eval 27.29] [%clk 0:10:59] } 57... Kd8?! { [%eval #20] } { Checkmate is now unavoidable. Kf7 was best. } { [%clk 0:33:09] } 58. b4 { [%eval #19] [%clk 0:11:01] } 58... Kc8 { [%eval #19] [%clk 0:32:57] } 59. a5 { [%eval #18] [%clk 0:11:29] } 59... Kb8 { [%eval #19] [%clk 0:33:22] } 60. Nb5 { [%eval #18] [%clk 0:11:37] } 60... a6 { [%eval #18] [%clk 0:31:42] } 61. Nc7 { [%eval #17] [%clk 0:10:12] } 61... Ka7 { [%eval #12] [%clk 0:33:37] } 62. Kc5 { [%eval #15] [%clk 0:09:41] } 62... Kb8 { [%eval #15] [%clk 0:33:50] } 63. Kb6 { [%eval #14] [%clk 0:09:44] } 63... Kc8 { [%eval #14] [%clk 0:34:05] } 64. Nxa6 { [%eval #13] [%clk 0:09:41] } 64... bxa6 { [%eval #13] [%clk 0:34:26] } 65. Kxa6 { [%eval #12] [%clk 0:10:05] } 65... Kb8 { [%eval #12] [%clk 0:34:52] } 66. b5 { [%eval #11] [%clk 0:10:17] } 66... Ka8 { [%eval #11] [%clk 0:35:17] } 67. Kb6 { [%eval #10] [%clk 0:10:02] } 67... Kb8 { [%eval #10] [%clk 0:35:43] } 68. a6 { [%eval #9] [%clk 0:10:11] } 68... Ka8 { [%eval #8] [%clk 0:36:05] } 69. Kc7 { [%eval #8] [%clk 0:09:39] } 69... Ka7 { [%eval #8] [%clk 0:36:29] } 70. b6+ { [%clk 0:09:50] } 70... Ka8 { [%clk 0:36:55] } 71. b7+ { [%clk 0:10:00] } 1-0