Event: Biel Chess Festival 2025 WT 1
Site: Biel, Switzerland
Date: 2025-07-22
White: Zhang, Zichen
Black: Briechle, Dennis
Result: 0-1
ECO: B56
Opening: Sicilian Defense: Classical Variation
Variant: Standard
TimeControl: 60' + 30'' / move

1. e4 { [%eval 0.18] [%clk 1:00:58] } 1... c5 { [%eval 0.25] [%clk 1:00:51] } 2. Nf3 { [%eval 0.2] [%clk 1:01:23] } 2... d6 { [%eval 0.31] [%clk 1:01:09] } 3. d4 { [%eval 0.22] [%clk 1:01:46] } 3... cxd4 { [%eval 0.19] [%clk 1:01:27] } 4. Nxd4 { [%eval 0.18] [%clk 1:02:10] } 4... Nf6 { [%eval 0.31] [%clk 1:01:11] } 5. Nc3 { [%eval 0.32] [%clk 1:02:32] } 5... Nc6 { [%eval 0.3] [%clk 1:00:55] } 6. Nb3 { [%eval 0.18] [%clk 1:02:32] } 6... g6 { [%eval 0.17] [%clk 1:00:54] } 7. Be3 { [%eval 0.06] [%clk 1:02:52] } 7... Bg7 { [%eval 0.08] [%clk 1:00:56] } 8. f3 { [%eval 0.08] [%clk 1:03:07] } 8... O-O { [%eval 0.16] [%clk 1:00:47] } 9. Qd2 { [%eval 0.35] [%clk 1:03:29] } 9... e6 { [%eval 0.78] [%clk 0:58:27] } 10. O-O-O { [%eval 0.78] [%clk 1:03:43] } 10... Ne5? { [%eval 2.42] } { Mistake. d5 was best. } { [%clk 0:52:18] } 11. g4?? { [%eval -0.34] } { Blunder. Qxd6 was best. } { [%clk 1:02:23] } 11... Ne8?? { [%eval 1.75] } { Blunder. Nxf3 was best. } { [%clk 0:50:16] } 12. h4?? { [%eval -0.2] } { Blunder. Be2 was best. } { [%clk 1:01:52] } 12... Nxf3 { [%eval -0.03] [%clk 0:48:56] } 13. Qf2 { [%eval -0.2] [%clk 1:01:14] } 13... Ne5 { [%eval -0.14] [%clk 0:48:23] } 14. Be2 { [%eval -0.18] [%clk 0:59:20] } 14... f5?! { [%eval 0.56] } { Inaccuracy. h6 was best. } { [%clk 0:47:00] } 15. g5 { [%eval 0.27] [%clk 0:58:21] } 15... Ng4 { [%eval 0.33] [%clk 0:44:21] } 16. Bxg4 { [%eval 0.24] [%clk 0:56:30] } 16... fxg4 { [%eval 0.26] [%clk 0:44:41] } 17. Qe2 { [%eval 0.39] [%clk 0:56:33] } 17... e5?! { [%eval 1.35] } { Inaccuracy. Qe7 was best. } { [%clk 0:41:56] } 18. Rdf1?? { [%eval -1.11] } { Blunder. h5 was best. } { [%clk 0:55:21] } 18... Be6 { [%eval -1.08] [%clk 0:39:50] } 19. Rxf8+ { [%eval -1.01] [%clk 0:52:37] } 19... Bxf8 { [%eval -1.21] [%clk 0:39:57] } 20. Rf1 { [%eval -1.42] [%clk 0:52:00] } 20... a5? { [%eval -0.21] } { Mistake. Nc7 was best. } { [%clk 0:34:57] } 21. a4?! { [%eval -0.79] } { Inaccuracy. Nd5 was best. } { [%clk 0:51:39] } 21... b6? { [%eval 0.64] } { Mistake. Qd7 was best. } { [%clk 0:30:03] } 22. Qf2?! { [%eval -0.43] } { Inaccuracy. Qd3 was best. } { [%clk 0:51:34] } 22... Bg7?! { [%eval 0.35] } { Inaccuracy. Ng7 was best. } { [%clk 0:30:06] } 23. Bxb6 { [%eval 0.35] [%clk 0:50:53] } 23... Qb8 { [%eval 0.39] [%clk 0:29:02] } 24. Rh1?! { [%eval -0.34] } { Inaccuracy. Kb1 was best. } { [%clk 0:48:20] } 24... h5 { [%eval -0.33] [%clk 0:26:27] } 25. Nd5? { [%eval -1.95] } { Mistake. gxh6 was best. } { [%clk 0:46:31] } 25... Bxd5 { [%eval -1.88] [%clk 0:24:03] } 26. exd5 { [%eval -1.69] [%clk 0:46:27] } 26... Qb7 { [%eval -1.48] [%clk 0:22:56] } 27. Rd1 { [%eval -1.58] [%clk 0:44:14] } 27... Nc7?? { [%eval 1.12] } { Blunder. Qd7 was best. } { [%clk 0:19:02] } 28. c4?? { [%eval -3.85] } { Blunder. Nxa5 was best. } { [%clk 0:43:42] } 28... Rf8 { [%eval -3.53] [%clk 0:17:28] } 29. Qc2?! { [%eval -5.08] } { Inaccuracy. Qe3 was best. } { [%clk 0:43:11] } 29... Qxb6 { [%eval -4.74] [%clk 0:16:21] } 30. Nd2 { [%eval -5.32] [%clk 0:41:55] } 30... Kh7 { [%eval -5.33] [%clk 0:15:21] } 31. Ne4 { [%eval -6.61] [%clk 0:38:24] } 31... Na6 { [%eval -6.61] [%clk 0:14:14] } 32. Nf6+ { [%eval -7.3] [%clk 0:37:51] } 32... Bxf6 { [%eval -8.11] [%clk 0:13:41] } 33. gxf6 { [%eval -7.91] [%clk 0:38:13] } 33... Rxf6 { [%eval -7.68] [%clk 0:13:40] } 34. Qg2? { [%eval #-11] } { Checkmate is now unavoidable. c5 was best. } { [%clk 0:36:34] } 34... Qe3+? { [%eval -7.09] } { Lost forced checkmate sequence. Rf2 was best. } { [%clk 0:12:28] } 35. Kb1? { [%eval #-8] } { Checkmate is now unavoidable. Qd2 was best. } { [%clk 0:35:05] } 35... Rf2 { [%eval #-7] [%clk 0:11:01] } 36. Qg1 { [%eval #-7] [%clk 0:33:30] } 36... Qe2 { [%eval #-7] [%clk 0:10:56] } 37. Rd2 { [%eval #-6] [%clk 0:32:02] } 37... Qxd2 { [%eval #-5] [%clk 0:11:09] } 38. Qc1 { [%eval #-5] [%clk 0:32:24] } 38... Qxc1+ { [%eval #-4] [%clk 0:10:53] } 39. Kxc1 { [%eval #-4] [%clk 0:32:47] } 39... Nb4 { [%eval #-4] [%clk 0:11:11] } 40. c5 { [%eval #-3] [%clk 0:32:51] } 40... Rc2+ { [%eval #-3] [%clk 0:11:33] } 41. Kd1 { [%eval #-3] [%clk 0:32:31] } 41... Rxc5 { [%eval #-6] [%clk 0:11:29] } 42. Kd2 { [%eval #-6] [%clk 0:32:48] } 42... g3 { [%eval #-5] [%clk 0:11:37] } 43. Ke2 { [%eval #-5] [%clk 0:32:50] } 43... g2 { [%eval #-6] [%clk 0:11:54] } 44. Kf2 { [%eval #-6] [%clk 0:33:17] } 44... Rc2+ { [%eval #-5] [%clk 0:12:18] } 45. Kg1 { [%eval #-5] [%clk 0:33:38] } 45... Rxb2 { [%eval #-5] [%clk 0:12:25] } 46. Kh2 { [%eval #-5] [%clk 0:33:42] } 46... Rb3 { [%eval #-8] [%clk 0:12:32] } 47. Kxg2 { [%eval #-8] [%clk 0:33:57] } 47... Nxd5 { [%eval #-7] [%clk 0:12:16] } 48. Kf2 { [%eval #-7] [%clk 0:32:58] } 48... e4 { [%eval #-6] [%clk 0:12:45] } 49. Ke1 { [%eval #-5] [%clk 0:32:42] } 49... Rb2 { [%eval #-4] [%clk 0:12:54] } 50. Kd1 { [%eval #-4] [%clk 0:33:01] } 50... e3 { [%eval #-3] [%clk 0:13:14] } 51. Ke1 { [%eval #-3] [%clk 0:33:25] } 51... Nb6 { [%eval #-4] [%clk 0:13:35] } 52. Kd1 { [%eval #-4] [%clk 0:33:29] } 52... Nxa4 { [%eval #-5] [%clk 0:13:52] } 53. Kc1 { [%eval #-3] [%clk 0:33:51] } 53... Rf2 { [%eval #-4] [%clk 0:14:09] } 54. Kd1 { [%eval #-4] [%clk 0:34:06] } 54... Nc5 { [%eval #-3] [%clk 0:14:22] } 55. Ke1 { [%eval #-2] [%clk 0:34:17] } 55... a4 { [%eval #-3] [%clk 0:14:44] } 56. Kd1 { [%eval #-3] [%clk 0:34:21] } 56... a3 { [%eval #-2] [%clk 0:15:06] } 57. Kc1 { [%eval #-2] [%clk 0:34:49] } 57... a2 { [%clk 0:14:59] } 58. Kd1 { [%clk 0:35:12] } 58... a1=Q# { [%clk 0:15:21] } 0-1