Event: Round 6: Koen Mathijssen - Jan Vossen
Date: 2025-05-18
White: Koen Mathijssen
Black: Jan Vossen
Result: 1-0
ECO: B27
Opening: Sicilian Defense: Hyperaccelerated Fianchetto
Variant: Standard
TimeControl: 90+30

1. e4 { [%eval 0.18] [%clk 1:30:57] } 1... c5 { [%eval 0.25] [%clk 1:30:55] } 2. Nf3 { [%eval 0.2] [%clk 1:31:23] } 2... g6 { [%eval 0.34] [%clk 1:31:17] } 3. d4 { [%eval 0.35] [%clk 1:31:48] } 3... cxd4 { [%eval 0.38] [%clk 1:31:40] } 4. Nxd4 { [%eval 0.38] [%clk 1:32:13] } 4... Bg7 { [%eval 0.4] [%clk 1:32:00] } 5. Be3 { [%eval 0.2] [%clk 1:32:13] } 5... Nc6 { [%eval 0.52] [%clk 1:32:19] } 6. Nc3 { [%eval 0.29] [%clk 1:32:37] } 6... a6?? { [%eval 2.05] } { Blunder. Nf6 was best. } { [%clk 1:32:24] } 7. Bc4? { [%eval 0.47] } { Mistake. Nd5 was best. } { [%clk 1:32:17] } 7... Nf6?! { [%eval 1.2] } { Inaccuracy. d6 was best. } { [%clk 1:32:30] } 8. f3?! { [%eval 0.51] } { Inaccuracy. Nxc6 was best. } { [%clk 1:32:41] } 8... O-O { [%eval 0.45] [%clk 1:32:31] } 9. Qd2 { [%eval 0.54] [%clk 1:32:59] } 9... Na5 { [%eval 0.71] [%clk 1:31:06] } 10. Bb3 { [%eval 0.42] [%clk 1:30:30] } 10... Nxb3 { [%eval 0.89] [%clk 1:30:40] } 11. Nxb3 { [%eval 0.45] [%clk 1:30:54] } 11... d6 { [%eval 0.5] [%clk 1:30:47] } 12. O-O-O { [%eval 0.6] [%clk 1:30:41] } 12... Be6 { [%eval 1.03] [%clk 1:29:50] } 13. Nd4?! { [%eval 0.08] } { Inaccuracy. h4 was best. } { [%clk 1:30:32] } 13... Bc4?! { [%eval 0.82] } { Inaccuracy. Qa5 was best. } { [%clk 1:28:39] } 14. Bh6? { [%eval -0.33] } { Mistake. h4 was best. } { [%clk 1:29:26] } 14... Qa5? { [%eval 0.83] } { Mistake. Bxh6 was best. } { [%clk 1:22:33] } 15. Kb1 { [%eval 0.42] [%clk 1:26:49] } 15... Rfc8 { [%eval 0.71] [%clk 1:21:41] } 16. Bxg7 { [%eval 0.75] [%clk 1:26:09] } 16... Kxg7 { [%eval 1.11] [%clk 1:21:51] } 17. h4 { [%eval 1.02] [%clk 1:22:35] } 17... b5 { [%eval 1.35] [%clk 1:21:49] } 18. Nb3 { [%eval 1.24] [%clk 1:22:54] } 18... Bxb3 { [%eval 1.29] [%clk 1:20:14] } 19. cxb3 { [%eval 1.21] [%clk 1:20:45] } 19... Rc5?! { [%eval 2.38] } { Inaccuracy. h5 was best. } { [%clk 1:17:09] } 20. a3 { [%eval 2.33] [%clk 1:18:55] } 20... b4 { [%eval 2.16] [%clk 1:16:41] } 21. Na2 { [%eval 1.84] [%clk 1:15:49] } 21... bxa3?? { [%eval 4.1] } { Blunder. Qb6 was best. } { [%clk 1:15:49] } 22. b4 { [%eval 3.95] [%clk 1:16:10] } 22... Rb8 { [%eval 4.53] [%clk 1:10:15] } 23. bxa5 { [%eval 4.52] [%clk 1:16:18] } 23... Rxb2+ { [%eval 4.45] [%clk 1:10:19] } 24. Qxb2 { [%eval 4.41] [%clk 1:16:42] } 24... axb2 { [%eval 4.29] [%clk 1:10:44] } 25. Kxb2 { [%eval 4.48] [%clk 1:16:28] } 25... Rxa5 { [%eval 4.52] [%clk 1:10:59] } 26. Nc3 { [%eval 4.53] [%clk 1:16:46] } 26... Rc5 { [%eval 4.54] [%clk 1:07:13] } 27. Nd5 { [%eval 4.53] [%clk 1:15:39] } 27... Ng8 { [%eval 4.62] [%clk 1:05:59] } 28. Ra1 { [%eval 4.46] [%clk 1:15:56] } 28... e6 { [%eval 4.5] [%clk 1:05:48] } 29. Ne3 { [%eval 4.55] [%clk 1:15:46] } 29... Rb5+ { [%eval 4.61] [%clk 1:04:53] } 30. Kc3 { [%eval 4.53] [%clk 1:16:01] } 30... Rc5+ { [%eval 4.61] [%clk 1:05:10] } 31. Kd4 { [%eval 4.62] [%clk 1:16:25] } 31... a5 { [%eval 4.76] [%clk 1:01:33] } 32. Nc4 { [%eval 4.39] [%clk 1:16:39] } 32... e5+ { [%eval 4.46] [%clk 1:01:17] } 33. Kd3 { [%eval 4.27] [%clk 1:13:45] } 33... d5 { [%eval 4.38] [%clk 1:00:27] } 34. exd5 { [%eval 4.29] [%clk 1:13:35] } 34... Rxd5+ { [%eval 4.39] [%clk 1:00:42] } 35. Kc3 { [%eval 4.32] [%clk 1:13:55] } 35... f6 { [%eval 4.81] [%clk 0:59:39] } 36. Rxa5 { [%eval 4.64] [%clk 1:14:17] } 36... Rd4?! { [%eval 6.92] } { Inaccuracy. Rxa5 was best. } { [%clk 0:59:40] } 37. Rb1?! { [%eval 5.01] } { Inaccuracy. Ra7+ was best. } { [%clk 1:13:47] } 37... Rxh4 { [%eval 4.76] [%clk 0:59:30] } 38. Rb7+ { [%eval 4.96] [%clk 1:14:05] } 38... Kh6 { [%eval 4.76] [%clk 0:59:46] } 39. Ra8 { [%eval 4.75] [%clk 1:14:31] } 1-0