Event: Round 1: Koppenens, Oscar - Madzia, Nathan
Date: 2025-03-21
White: Koppenens, Oscar
WhiteElo: 1986
Black: Madzia, Nathan
BlackElo: 1867
Result: 1/2-1/2
ECO: B76
Opening: Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:50:17] } 1... c5 { [%eval 0.25] [%clk 1:50:14] } 2. Nf3 { [%eval 0.2] [%clk 1:50:18] } 2... d6 { [%eval 0.22] [%clk 1:50:16] } 3. d4 { [%eval 0.22] [%clk 1:50:24] } 3... cxd4 { [%eval 0.19] [%clk 1:50:19] } 4. Nxd4 { [%eval 0.18] [%clk 1:50:27] } 4... Nf6 { [%eval 0.25] [%clk 1:50:25] } 5. Nc3 { [%eval 0.32] [%clk 1:50:32] } 5... g6 { [%eval 0.59] [%clk 1:50:25] } 6. Be3 { [%eval 0.43] [%clk 1:50:38] } 6... Bg7 { [%eval 0.46] [%clk 1:50:29] } 7. f3 { [%eval 0.44] [%clk 1:50:42] } 7... O-O { [%eval 0.55] [%clk 1:50:31] } 8. Qd2 { [%eval 0.62] [%clk 1:50:51] } 8... Nc6 { [%eval 0.62] [%clk 1:50:33] } 9. O-O-O { [%eval 0.66] [%clk 1:50:56] } 9... d5 { [%eval 0.57] [%clk 1:50:34] } 10. Nxc6 { [%eval 0.38] [%clk 1:50:57] } 10... bxc6 { [%eval 0.4] [%clk 1:50:38] } 11. Bc4 { [%eval 0.62] [%clk 1:51:03] } 11... Qa5?! { [%eval 1.65] } { Inaccuracy. Rb8 was best. } { [%clk 1:23:17] } 12. Bb3?! { [%eval 0.66] } { Inaccuracy. exd5 was best. } { [%clk 1:50:25] } 12... Rd8 { [%eval 1.04] [%clk 1:04:25] } 13. Kb1 { [%eval 0.72] [%clk 1:50:05] } 13... d4 { [%eval 1.13] [%clk 0:39:18] } 14. e5?! { [%eval 0.16] } { Inaccuracy. Bxd4 was best. } { [%clk 1:34:44] } 14... Ba6?! { [%eval 0.76] } { Inaccuracy. Qxe5 was best. } { [%clk 0:30:07] } 15. Bxd4 { [%eval 0.72] [%clk 1:33:13] } 15... c5 { [%eval 0.74] [%clk 0:29:53] } 16. exf6?! { [%eval -0.09] } { Inaccuracy. Nd5 was best. } { [%clk 1:32:34] } 16... Rxd4 { [%eval -0.06] [%clk 0:29:43] } 17. Qe3 { [%eval -0.47] [%clk 1:32:28] } 17... Bxf6 { [%eval -0.51] [%clk 0:29:42] } 18. Rxd4 { [%eval -0.55] [%clk 1:20:08] } 18... cxd4 { [%eval -0.18] [%clk 0:29:23] } 19. Qe4 { [%eval -0.36] [%clk 1:20:09] } 19... Rd8 { [%eval -0.05] [%clk 0:27:01] } 20. Nd5 { [%eval -0.11] [%clk 1:19:21] } 20... Qc5 { [%eval -0.17] [%clk 0:25:30] } 21. Re1 { [%eval -0.61] [%clk 1:17:46] } 21... Kf8? { [%eval 0.81] } { Mistake. d3 was best. } { [%clk 0:23:03] } 22. Nxf6 { [%eval 0.84] [%clk 1:13:32] } 22... exf6 { [%eval 0.86] [%clk 0:23:08] } 23. Rd1?! { [%eval -0.1] } { Inaccuracy. Bxf7 was best. } { [%clk 1:12:05] } 23... Qe5 { [%eval 0.0] [%clk 0:19:37] } 24. Qxe5 { [%eval 0.0] [%clk 1:11:36] } 24... fxe5 { [%eval 0.0] [%clk 0:19:45] } 25. Kc1 { [%eval -0.11] [%clk 1:11:32] } 25... Kg7 { [%eval 0.0] [%clk 0:18:58] } 26. Re1 { [%eval -0.21] [%clk 1:11:19] } 26... Re8 { [%eval -0.04] [%clk 0:18:44] } 27. Kd2 { [%eval -0.12] [%clk 1:10:52] } 27... f5 { [%eval -0.17] [%clk 0:18:30] } 28. Bd5 { [%eval -0.14] [%clk 1:10:17] } 28... Kf6 { [%eval -0.17] [%clk 0:18:20] } 29. a4?! { [%eval -0.8] } { Inaccuracy. b4 was best. } { [%clk 1:08:50] } 29... Rd8 { [%eval -0.78] [%clk 0:16:14] } 30. Bc6 { [%eval -0.77] [%clk 1:08:31] } 30... Rd6 { [%eval -0.82] [%clk 0:15:44] } 31. Ba8 { [%eval -0.83] [%clk 1:08:18] } 31... Rd8 { [%eval -0.97] [%clk 0:15:47] } 32. Bc6 { [%eval -0.96] [%clk 1:08:17] } 32... Rd6 { [%eval -0.87] [%clk 0:15:56] } 33. Ba8 { [%eval -0.97] [%clk 1:07:12] } 1/2-1/2