Event: Round 8: Koykka, Pekka - Lahdelma, Henri
Date: 2025-04-25
White: Koykka, Pekka
WhiteTitle: IM
WhiteElo: 2351
Black: Lahdelma, Henri
BlackTitle: FM
BlackElo: 2297
Result: 1-0
ECO: C11
Opening: French Defense: Steinitz Variation, Boleslavsky Variation
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:55] } 1... e6 { [%eval 0.28] [%clk 1:30:32] } 2. d4 { [%eval 0.28] [%clk 1:31:17] } 2... d5 { [%eval 0.33] [%clk 1:30:59] } 3. Nc3 { [%eval 0.28] [%clk 1:31:39] } 3... Nf6 { [%eval 0.32] [%clk 1:31:18] } 4. e5 { [%eval 0.32] [%clk 1:32:01] } 4... Nfd7 { [%eval 0.29] [%clk 1:31:45] } 5. f4 { [%eval 0.25] [%clk 1:32:10] } 5... c5 { [%eval 0.27] [%clk 1:32:11] } 6. Nf3 { [%eval 0.26] [%clk 1:32:34] } 6... Nc6 { [%eval 0.36] [%clk 1:32:25] } 7. Be3 { [%eval 0.35] [%clk 1:32:39] } 7... Be7 { [%eval 0.33] [%clk 1:32:17] } 8. Qd2 { [%eval 0.53] [%clk 1:32:43] } 8... b6 { [%eval 0.77] [%clk 1:32:15] } 9. Bb5 { [%eval 0.83] [%clk 1:22:30] } 9... Bb7 { [%eval 0.77] [%clk 1:30:54] } 10. O-O { [%eval 0.33] [%clk 1:21:59] } 10... O-O { [%eval 0.4] [%clk 1:27:13] } 11. Nd1 { [%eval 0.34] [%clk 1:17:55] } 11... cxd4 { [%eval 0.42] [%clk 1:24:28] } 12. Nxd4 { [%eval 0.4] [%clk 1:17:48] } 12... Nxd4 { [%eval 0.35] [%clk 1:24:41] } 13. Bxd4 { [%eval 0.38] [%clk 1:18:07] } 13... Nc5 { [%eval 0.48] [%clk 1:23:49] } 14. c3 { [%eval 0.49] [%clk 1:13:53] } 14... Ne4 { [%eval 0.43] [%clk 1:22:31] } 15. Qe2 { [%eval 0.06] [%clk 1:12:21] } 15... f5 { [%eval 0.04] [%clk 1:19:40] } 16. exf6 { [%eval 0.11] [%clk 1:11:22] } 16... Bxf6 { [%eval 0.1] [%clk 1:20:00] } 17. Ne3 { [%eval 0.12] [%clk 1:07:45] } 17... Qd6 { [%eval 0.25] [%clk 1:18:07] } 18. g3 { [%eval 0.09] [%clk 1:05:18] } 18... g5?! { [%eval 0.87] } { Inaccuracy. Bxd4 was best. } { [%clk 0:53:13] } 19. Bxf6?! { [%eval 0.29] } { Inaccuracy. fxg5 was best. } { [%clk 0:42:35] } 19... Rxf6 { [%eval 0.33] [%clk 0:52:45] } 20. fxg5 { [%eval 0.52] [%clk 0:42:52] } 20... Rxf1+?! { [%eval 1.63] } { Inaccuracy. Rff8 was best. } { [%clk 0:40:49] } 21. Rxf1 { [%eval 1.68] [%clk 0:42:13] } 21... Qc5?! { [%eval 2.73] } { Inaccuracy. Rf8 was best. } { [%clk 0:41:03] } 22. Bd3 { [%eval 2.89] [%clk 0:40:07] } 22... Nxg5 { [%eval 3.38] [%clk 0:40:37] } 23. h4 { [%eval 3.05] [%clk 0:35:29] } 23... Ne4 { [%eval 2.96] [%clk 0:40:57] } 24. Bxe4 { [%eval 3.44] [%clk 0:32:48] } 24... dxe4 { [%eval 3.36] [%clk 0:41:22] } 25. Qg4+ { [%eval 3.25] [%clk 0:30:56] } 25... Kh8 { [%eval 2.93] [%clk 0:41:22] } 26. Qf4 { [%eval 3.05] [%clk 0:30:43] } 26... Qe7?! { [%eval 4.64] } { Inaccuracy. Rg8 was best. } { [%clk 0:28:26] } 27. Qe5+ { [%eval 4.34] [%clk 0:22:54] } 27... Qg7 { [%eval 4.23] [%clk 0:28:31] } 28. Rf6 { [%eval 4.08] [%clk 0:21:08] } 28... Re8?? { [%eval #7] } { Checkmate is now unavoidable. Rg8 was best. } { [%clk 0:27:32] } 29. h5?? { [%eval 4.04] } { Lost forced checkmate sequence. Nf5 was best. } { [%clk 0:20:46] } 29... Kg8?? { [%eval #9] } { Checkmate is now unavoidable. Rg8 was best. } { [%clk 0:27:05] } 30. h6 { [%eval #11] [%clk 0:20:51] } 30... Qe7 { [%eval #11] [%clk 0:27:28] } 31. Rf4 { [%eval #10] [%clk 0:20:49] } 31... Qc5 { [%clk 0:26:28] } 32. Qg7# { [%clk 0:21:08] } 1-0