Event: Biel Chess Festival 2025
Date: 2025-07-21
White: Boyer, Jean-Francois
WhiteElo: 1743
Black: Chalmers, Jean-Jack
BlackElo: 0
Result: 1-0
ECO: B40
Opening: Sicilian Defense: Four Knights Variation
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:16] } 1... c5 { [%eval 0.25] [%clk 1:30:48] } 2. Nf3 { [%eval 0.2] [%clk 1:29:39] } 2... Nc6 { [%eval 0.3] [%clk 1:31:03] } 3. d4 { [%eval 0.27] [%clk 1:29:38] } 3... cxd4 { [%eval 0.27] [%clk 1:31:16] } 4. Nxd4 { [%eval 0.21] [%clk 1:30:00] } 4... Nf6 { [%eval 0.19] [%clk 1:31:20] } 5. Nc3 { [%eval 0.26] [%clk 1:27:57] } 5... e6 { [%eval 0.35] [%clk 1:31:02] } 6. Be3 { [%eval 0.0] [%clk 1:14:55] } 6... Bb4 { [%eval 0.0] [%clk 1:30:59] } 7. f3 { [%eval -0.25] [%clk 1:14:33] } 7... d5 { [%eval -0.25] [%clk 1:30:38] } 8. Nxc6 { [%eval -0.51] [%clk 1:01:09] } 8... Bxc3+?! { [%eval 0.2] } { Inaccuracy. bxc6 was best. } { [%clk 1:24:16] } 9. bxc3 { [%eval 0.2] [%clk 1:01:03] } 9... bxc6 { [%eval 0.24] [%clk 1:24:37] } 10. e5 { [%eval -0.11] [%clk 0:50:42] } 10... Nd7 { [%eval -0.19] [%clk 1:16:24] } 11. f4 { [%eval -0.14] [%clk 0:50:05] } 11... Qa5 { [%eval -0.24] [%clk 1:14:50] } 12. Qd2 { [%eval -0.16] [%clk 0:49:45] } 12... Ba6 { [%eval -0.25] [%clk 1:14:49] } 13. Bd3 { [%eval -0.18] [%clk 0:46:23] } 13... O-O { [%eval -0.12] [%clk 1:10:45] } 14. O-O { [%eval -0.15] [%clk 0:46:27] } 14... f6 { [%eval 0.19] [%clk 1:05:14] } 15. exf6 { [%eval 0.14] [%clk 0:45:44] } 15... Nxf6 { [%eval 0.19] [%clk 1:02:58] } 16. Bd4 { [%eval 0.0] [%clk 0:39:40] } 16... Ne4 { [%eval 0.43] [%clk 1:00:01] } 17. Qe2 { [%eval 0.29] [%clk 0:37:36] } 17... c5 { [%eval 0.43] [%clk 0:57:49] } 18. Be5 { [%eval 0.35] [%clk 0:36:37] } 18... Bb7?? { [%eval 2.47] } { Blunder. Bxd3 was best. } { [%clk 0:55:35] } 19. c4 { [%eval 2.29] [%clk 0:33:31] } 19... Rfe8? { [%eval 4.1] } { Mistake. Rf7 was best. } { [%clk 0:50:14] } 20. Qg4?! { [%eval 3.06] } { Inaccuracy. cxd5 was best. } { [%clk 0:25:02] } 20... Re7 { [%eval 2.87] [%clk 0:42:50] } 21. f5?? { [%eval 0.74] } { Blunder. Rae1 was best. } { [%clk 0:22:32] } 21... exf5 { [%eval 0.65] [%clk 0:42:50] } 22. Qxf5 { [%eval 0.78] [%clk 0:19:31] } 22... Rae8?? { [%eval 3.22] } { Blunder. g6 was best. } { [%clk 0:42:51] } 23. cxd5?? { [%eval 0.98] } { Blunder. Bxe4 was best. } { [%clk 0:10:22] } 23... Bxd5?? { [%eval 4.71] } { Blunder. g6 was best. } { [%clk 0:42:22] } 24. Bxg7?! { [%eval 3.57] } { Inaccuracy. Bc7 was best. } { [%clk 0:09:45] } 24... Kxg7 { [%eval 3.47] [%clk 0:35:48] } 25. Qxd5 { [%eval 3.36] [%clk 0:08:55] } 25... Qc7 { [%eval 3.52] [%clk 0:31:10] } 26. Rae1 { [%eval 3.39] [%clk 0:05:43] } 26... Re5 { [%eval 3.9] [%clk 0:24:54] } 27. Qc4 { [%eval 3.68] [%clk 0:02:15] } 27... Nf6 { [%eval 4.1] [%clk 0:20:45] } 28. Rf4?? { [%eval -5.97] } { Blunder. Qf4 was best. } { [%clk 0:02:26] } 28... h5?? { [%eval 3.93] } { Blunder. Rxe1+ was best. } { [%clk 0:10:10] } 29. Kf2?? { [%eval -5.96] } { Blunder. Ref1 was best. } { [%clk 0:02:58] } 29... Kh6?? { [%eval #9] } { Checkmate is now unavoidable. Rxe1 was best. } { [%clk 0:10:25] } 1-0