Event: Round 10: Petersen, Marcel - Koellner, Ruben Gideon
Site: https://lichess.org/broadcast/berlin-u25-open--rapid/round-10/Gvt3ihJX/FJ4ojUmS
Date: 2025-11-16
White: Petersen, Marcel
WhiteTitle: CM
WhiteElo: 2109
Black: Koellner, Ruben Gideon
BlackTitle: IM
BlackElo: 2438
Result: 0-1
ECO: C41
Opening: Philidor Defense: Lion Variation
Variant: Standard
TimeControl: 10+5

1. e4 { [%eval 0.18] [%clk 0:10:09] } 1... d6 { [%eval 0.43] [%clk 0:10:10] } 2. d4 { [%eval 0.43] [%clk 0:10:11] } 2... Nf6 { [%eval 0.43] [%clk 0:10:14] } 3. Nc3 { [%eval 0.38] [%clk 0:10:09] } 3... e5 { [%eval 0.45] [%clk 0:10:18] } 4. Nf3 { [%eval 0.46] [%clk 0:10:11] } 4... Nbd7 { [%eval 0.44] [%clk 0:10:22] } 5. Bc4 { [%eval 0.36] [%clk 0:10:09] } 5... Be7 { [%eval 0.35] [%clk 0:10:25] } 6. O-O { [%eval 0.37] [%clk 0:09:37] } 6... c6 { [%eval 0.42] [%clk 0:10:30] } 7. a4 { [%eval 0.4] [%clk 0:09:38] } 7... h6 { [%eval 0.45] [%clk 0:10:34] } 8. Re1 { [%eval 0.51] [%clk 0:09:37] } 8... Qc7 { [%eval 0.63] [%clk 0:10:37] } 9. Ba2 { [%eval 0.55] [%clk 0:09:38] } 9... Nf8 { [%eval 0.58] [%clk 0:10:41] } 10. h3 { [%eval 0.45] [%clk 0:09:10] } 10... g5 { [%eval 0.81] [%clk 0:10:43] } 11. Nh2 { [%eval 0.6] [%clk 0:08:52] } 11... Ng6 { [%eval 0.54] [%clk 0:10:46] } 12. d5 { [%eval 0.32] [%clk 0:08:16] } 12... Kf8 { [%eval 0.27] [%clk 0:10:49] } 13. Be3 { [%eval 0.21] [%clk 0:07:33] } 13... Rg8 { [%eval 0.41] [%clk 0:10:51] } 14. Ng4 { [%eval 0.48] [%clk 0:07:26] } 14... Bxg4 { [%eval 0.42] [%clk 0:10:52] } 15. hxg4 { [%eval 0.46] [%clk 0:07:30] } 15... Qc8 { [%eval 0.71] [%clk 0:10:52] } 16. f3? { [%eval -0.62] } { Mistake. a5 was best. } { [%clk 0:07:24] } 16... h5 { [%eval -0.52] [%clk 0:10:55] } 17. Bxg5 { [%eval -0.94] [%clk 0:06:16] } 17... hxg4 { [%eval -0.93] [%clk 0:10:59] } 18. Kf2?! { [%eval -1.82] } { Inaccuracy. dxc6 was best. } { [%clk 0:04:47] } 18... g3+ { [%eval -1.76] [%clk 0:11:01] } 19. Ke2 { [%eval -1.66] [%clk 0:04:37] } 19... Nh5 { [%eval -1.39] [%clk 0:11:05] } 20. Bxe7+?! { [%eval -2.09] } { Inaccuracy. Bh6+ was best. } { [%clk 0:03:49] } 20... Kxe7 { [%eval -2.0] [%clk 0:11:09] } 21. Rh1?! { [%eval -2.91] } { Inaccuracy. Kd2 was best. } { [%clk 0:03:47] } 21... Nhf4+ { [%eval -3.07] [%clk 0:11:12] } 22. Kf1? { [%eval -6.13] } { Mistake. Kd2 was best. } { [%clk 0:03:50] } 22... Rh8 { [%eval -6.0] [%clk 0:11:16] } 23. Rg1 { [%eval -5.89] [%clk 0:03:21] } 23... Nxg2 { [%eval -5.67] [%clk 0:11:19] } 24. Rxg2 { [%eval -7.07] [%clk 0:02:10] } 24... Nf4 { [%eval -5.77] [%clk 0:11:23] } 25. Rxg3 { [%eval -5.73] [%clk 0:01:53] } 25... Rh1+ { [%eval -5.59] [%clk 0:11:04] } 26. Rg1 { [%eval -6.75] [%clk 0:01:48] } 26... Qh3+ { [%eval -5.78] [%clk 0:10:51] } 27. Kf2 { [%eval -5.64] [%clk 0:01:51] } 27... Rh2+ { [%eval -5.74] [%clk 0:10:53] } 28. Ke3 { [%eval -5.68] [%clk 0:01:37] } 28... Qh6 { [%eval -5.27] [%clk 0:10:56] } 29. dxc6?? { [%eval #-4] } { Checkmate is now unavoidable. Re1 was best. } { [%clk 0:01:22] } 29... bxc6? { [%eval -7.25] } { Lost forced checkmate sequence. Nd5+ was best. } { [%clk 0:10:52] } 30. Rh1? { [%eval #-4] } { Checkmate is now unavoidable. Re1 was best. } { [%clk 0:00:51] } 30... Nd5+ { [%eval #-3] [%clk 0:10:50] } 31. Kd3 { [%eval #-3] [%clk 0:00:52] } 31... Qe3+ { [%eval #-2] [%clk 0:10:55] } 32. Kc4 { [%eval #-2] [%clk 0:00:56] } 32... Qc5+ { [%eval #-1] [%clk 0:10:55] } 33. Kb3 { [%eval #-1] [%clk 0:00:50] } 33... Qb4# { [%clk 0:10:59] } 0-1