Event: Biel Chess Festival 2025 MTO
Site: Biel, Switzerland
Date: 2025-07-16
White: Zhang, Haoxuan
WhiteElo: 1979
Black: Monteverde, Jonathan
BlackElo: 2127
Result: 1-0
ECO: B90
Opening: Sicilian Defense: Najdorf 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... c5 { [%eval 0.25] [%clk 1:40:53] } 2. Nf3 { [%eval 0.2] [%clk 1:41:09] } 2... d6 { [%eval 0.31] [%clk 1:41:20] } 3. d4 { [%eval 0.22] [%clk 1:41:29] } 3... cxd4 { [%eval 0.19] [%clk 1:41:26] } 4. Nxd4 { [%eval 0.18] [%clk 1:41:52] } 4... Nf6 { [%eval 0.31] [%clk 1:41:52] } 5. Nc3 { [%eval 0.32] [%clk 1:42:14] } 5... a6 { [%eval 0.28] [%clk 1:42:17] } 6. Bd3 { [%eval 0.18] [%clk 1:42:32] } 6... Nc6 { [%eval 0.42] [%clk 1:42:00] } 7. Nxc6 { [%eval 0.38] [%clk 1:40:13] } 7... bxc6 { [%eval 0.32] [%clk 1:42:13] } 8. b3 { [%eval 0.38] [%clk 1:39:27] } 8... e5 { [%eval 0.53] [%clk 1:39:47] } 9. Qe2 { [%eval 0.4] [%clk 1:36:13] } 9... Be7 { [%eval 0.42] [%clk 1:39:24] } 10. O-O { [%eval 0.41] [%clk 1:35:04] } 10... O-O { [%eval 0.4] [%clk 1:39:36] } 11. Bb2 { [%eval 0.3] [%clk 1:33:22] } 11... Bg4 { [%eval 0.37] [%clk 1:26:42] } 12. Qe1 { [%eval 0.25] [%clk 1:25:07] } 12... Nh5 { [%eval 0.22] [%clk 1:18:32] } 13. h3 { [%eval 0.13] [%clk 1:19:08] } 13... Be6 { [%eval 0.17] [%clk 1:18:01] } 14. Ne2 { [%eval 0.17] [%clk 1:18:24] } 14... Bg5 { [%eval 0.13] [%clk 1:15:54] } 15. c4 { [%eval 0.0] [%clk 1:08:35] } 15... g6 { [%eval 0.44] [%clk 1:13:06] } 16. Qc3 { [%eval 0.27] [%clk 1:10:22] } 16... f5?! { [%eval 0.93] } { Inaccuracy. Bh6 was best. } { [%clk 0:54:20] } 17. exf5?! { [%eval 0.28] } { Inaccuracy. c5 was best. } { [%clk 1:06:59] } 17... gxf5 { [%eval 0.25] [%clk 0:55:25] } 18. f4 { [%eval 0.33] [%clk 1:02:28] } 18... Bf6 { [%eval 0.27] [%clk 0:55:41] } 19. fxe5 { [%eval 0.33] [%clk 1:02:43] } 19... Bxe5 { [%eval 0.37] [%clk 0:51:40] } 20. Qc2 { [%eval 0.29] [%clk 1:00:55] } 20... Qg5 { [%eval 0.32] [%clk 0:47:52] } 21. Rf3 { [%eval 0.41] [%clk 0:59:25] } 21... c5 { [%eval 0.93] [%clk 0:41:26] } 22. Raf1 { [%eval 0.85] [%clk 0:44:47] } 22... f4?! { [%eval 1.71] } { Inaccuracy. Ng7 was best. } { [%clk 0:37:53] } 23. Bxh7+ { [%eval 1.77] [%clk 0:40:01] } 23... Kg7 { [%eval 1.85] [%clk 0:35:35] } 24. Be4 { [%eval 1.73] [%clk 0:36:39] } 24... Ra7 { [%eval 1.84] [%clk 0:34:53] } 25. Qd2 { [%eval 1.72] [%clk 0:32:56] } 25... Rd7?? { [%eval 4.4] } { Blunder. Raf7 was best. } { [%clk 0:29:01] } 26. Nxf4 { [%eval 4.96] [%clk 0:15:40] } 26... Kh6?! { [%eval 6.45] } { Inaccuracy. Nxf4 was best. } { [%clk 0:24:52] } 27. h4 { [%eval 6.44] [%clk 0:38:15] } 27... Qxf4 { [%eval 5.77] [%clk 0:10:22] } 28. Rxf4 { [%eval 6.09] [%clk 0:38:40] } 28... Bxf4 { [%eval 6.47] [%clk 0:10:13] } 29. Rxf4 { [%eval 6.95] [%clk 0:37:26] } 29... Nxf4 { [%eval 6.66] [%clk 0:10:14] } 30. g3 { [%eval 6.98] [%clk 0:37:51] } 30... d5 { [%eval 7.17] [%clk 0:07:50] } 31. cxd5 { [%eval 6.86] [%clk 0:38:09] } 31... Bxd5 { [%eval 5.82] [%clk 0:08:05] } 32. gxf4 { [%eval 5.6] [%clk 0:37:57] } 32... Bc6?? { [%eval #13] } { Checkmate is now unavoidable. Rfd8 was best. } { [%clk 0:04:42] } 33. Qg2 { [%eval #12] [%clk 0:30:46] } 33... Bxe4 { [%eval #12] [%clk 0:04:41] } 34. Qxe4?? { [%eval 5.85] } { Lost forced checkmate sequence. Qg5+ was best. } { [%clk 0:30:40] } 34... Rd1+ { [%eval 7.5] [%clk 0:05:00] } 35. Kh2 { [%eval 7.34] [%clk 0:31:04] } 35... Rd2+ { [%eval 7.49] [%clk 0:05:25] } 36. Kh3 { [%eval 7.28] [%clk 0:31:29] } 36... Rxb2 { [%eval 7.35] [%clk 0:05:46] } 37. Qe6+ { [%eval 7.03] [%clk 0:30:33] } 37... Kh7 { [%eval 7.57] [%clk 0:06:09] } 38. Qe7+ { [%eval 7.27] [%clk 0:30:21] } 38... Kg8 { [%eval 7.59] [%clk 0:06:31] } 39. h5 { [%eval 7.21] [%clk 0:30:16] } 39... Rf5 { [%eval 9.83] [%clk 0:00:33] } 40. Qe8+ { [%eval 9.11] [%clk 0:30:29] } 40... Rf8 { [%eval 8.44] [%clk 0:00:43] } 41. Qg6+ { [%eval 8.26] [%clk 0:30:48] } 41... Kh8 { [%eval 8.81] [%clk 0:01:08] } 42. h6 { [%eval 8.62] [%clk 0:31:14] } 42... Rg8 { [%eval 8.63] [%clk 0:01:09] } 43. Qf6+ { [%eval 7.49] [%clk 0:31:39] } 1-0