Event: Nuorten SM 2025, U18
Site: Valkeakoski, Finland
Date: 2025-06-07
White: Hietanen, Herman
WhiteElo: 2104
Black: Collander, David
BlackElo: 1869
Result: 1-0
ECO: A57
Opening: Benko Gambit
Variant: Standard
TimeControl: 90' / 40 moves + 30' + 30 sec / move

1. d4 { [%eval 0.17] [%clk 1:30:51] } 1... Nf6 { [%eval 0.19] [%clk 1:30:56] } 2. c4 { [%eval 0.18] [%clk 1:31:15] } 2... c5 { [%eval 0.56] [%clk 1:30:44] } 3. d5 { [%eval 0.47] [%clk 1:31:39] } 3... b5 { [%eval 0.47] [%clk 1:31:07] } 4. Qc2 { [%eval 0.0] [%clk 1:30:20] } 4... g6 { [%eval 0.43] [%clk 1:27:54] } 5. e4 { [%eval 0.43] [%clk 1:29:58] } 5... d6?! { [%eval 1.02] } { Inaccuracy. bxc4 was best. } { [%clk 1:28:01] } 6. Nf3?! { [%eval 0.18] } { Inaccuracy. cxb5 was best. } { [%clk 1:29:27] } 6... Bg7?! { [%eval 0.93] } { Inaccuracy. b4 was best. } { [%clk 1:28:19] } 7. cxb5 { [%eval 0.93] [%clk 1:28:52] } 7... a6 { [%eval 1.12] [%clk 1:28:43] } 8. b6?! { [%eval 0.16] } { Inaccuracy. Nc3 was best. } { [%clk 1:29:12] } 8... Qxb6 { [%eval 0.35] [%clk 1:28:55] } 9. Nc3 { [%eval 0.07] [%clk 1:28:55] } 9... O-O { [%eval 0.15] [%clk 1:27:21] } 10. a4?! { [%eval -0.47] } { Inaccuracy. Be2 was best. } { [%clk 1:27:24] } 10... a5?! { [%eval 0.23] } { Inaccuracy. e6 was best. } { [%clk 1:25:25] } 11. Bb5 { [%eval 0.29] [%clk 1:27:05] } 11... Ba6 { [%eval 0.62] [%clk 1:24:19] } 12. O-O { [%eval 0.51] [%clk 1:23:04] } 12... Bxb5 { [%eval 0.54] [%clk 1:24:30] } 13. Nxb5 { [%eval 0.5] [%clk 1:23:11] } 13... Na6 { [%eval 0.47] [%clk 1:24:42] } 14. Nd2 { [%eval 0.17] [%clk 1:21:55] } 14... Nb4 { [%eval 0.24] [%clk 1:22:48] } 15. Qb3 { [%eval 0.0] [%clk 1:20:31] } 15... Nd7 { [%eval 0.33] [%clk 1:22:53] } 16. Nc4 { [%eval 0.31] [%clk 1:19:05] } 16... Qb7 { [%eval 0.35] [%clk 1:23:13] } 17. Bf4 { [%eval 0.16] [%clk 1:14:58] } 17... Nb6 { [%eval 0.2] [%clk 1:22:37] } 18. Nd2?! { [%eval -0.81] } { Inaccuracy. Nxb6 was best. } { [%clk 1:10:55] } 18... c4?! { [%eval 0.04] } { Inaccuracy. f5 was best. } { [%clk 1:20:02] } 19. Nxc4 { [%eval 0.0] [%clk 1:09:33] } 19... Nxc4 { [%eval 0.0] [%clk 1:20:23] } 20. Qxc4 { [%eval 0.05] [%clk 1:09:59] } 20... Bxb2 { [%eval 0.31] [%clk 1:20:51] } 21. Rab1 { [%eval 0.3] [%clk 1:08:43] } 21... Rac8 { [%eval 0.34] [%clk 1:21:02] } 22. Qb3 { [%eval 0.43] [%clk 1:08:17] } 22... Bg7 { [%eval 0.44] [%clk 1:20:38] } 23. Rfe1 { [%eval 0.19] [%clk 0:51:10] } 23... Na6 { [%eval 0.54] [%clk 1:19:00] } 24. Qh3 { [%eval 0.32] [%clk 0:47:51] } 24... Qa8 { [%eval 0.64] [%clk 1:18:30] } 25. Bg5 { [%eval 0.73] [%clk 0:43:42] } 25... Rfe8 { [%eval 0.67] [%clk 1:17:11] } 26. Qh4 { [%eval 0.13] [%clk 0:43:11] } 26... f6 { [%eval 0.18] [%clk 1:17:06] } 27. Bh6 { [%eval -0.22] [%clk 0:39:11] } 27... Rc4 { [%eval -0.35] [%clk 1:16:24] } 28. Rb3 { [%eval -0.27] [%clk 0:35:00] } 28... g5?? { [%eval 2.53] } { Blunder. Bxh6 was best. } { [%clk 1:15:07] } 29. Qh5 { [%eval 2.59] [%clk 0:34:19] } 29... Qc8 { [%eval 3.08] [%clk 1:14:13] } 30. h4 { [%eval 2.97] [%clk 0:27:43] } 30... Rc1 { [%eval 3.73] [%clk 1:13:06] } 31. Rxc1 { [%eval 4.19] [%clk 0:27:57] } 31... Qxc1+ { [%eval 4.19] [%clk 1:13:30] } 32. Kh2 { [%eval 3.83] [%clk 0:28:23] } 32... Qf4+ { [%eval 4.77] [%clk 1:13:17] } 33. Rg3 { [%eval 4.65] [%clk 0:28:43] } 33... Rf8 { [%eval 4.91] [%clk 1:12:17] } 34. hxg5 { [%eval 4.67] [%clk 0:18:22] } 34... f5?! { [%eval 7.46] } { Inaccuracy. fxg5 was best. } { [%clk 1:12:30] } 35. Bxg7 { [%eval 7.36] [%clk 0:17:53] } 35... Kxg7 { [%eval 7.16] [%clk 1:12:45] } 36. Nd4 { [%eval 6.64] [%clk 0:17:34] } 36... Nc5 { [%eval 8.01] [%clk 1:13:00] } 37. g6?! { [%eval 5.86] } { Inaccuracy. Qh6+ was best. } { [%clk 0:15:36] } 37... Qxg3+ { [%eval 7.41] [%clk 1:11:38] } 38. fxg3 { [%eval 7.2] [%clk 0:15:14] } 38... hxg6 { [%eval 7.08] [%clk 1:11:59] } 39. Qg5 { [%eval 6.98] [%clk 0:15:15] } 39... Rh8+ { [%eval 8.74] [%clk 1:11:31] } 40. Kg1 { [%eval 8.31] [%clk 0:15:37] } 40... Kf8 { [%eval 8.36] [%clk 1:10:45] } 41. Qxg6 { [%eval 11.66] [%clk 0:15:31] } 41... fxe4?! { [%eval #4] } { Checkmate is now unavoidable. Rg8 was best. } { [%clk 1:10:33] } 42. Ne6+ { [%eval #3] [%clk 0:15:44] } 42... Nxe6 { [%eval #3] [%clk 1:10:53] } 43. dxe6 { [%eval #2] [%clk 0:15:07] } 1-0