Event: Round 4: Polster, Christian - Koellner, Ruben Gideon
Date: 2024-10-23
White: Polster, Christian
WhiteTitle: FM
WhiteElo: 2265
Black: Koellner, Ruben Gideon
BlackTitle: IM
BlackElo: 2480
Result: 0-1
ECO: C41
Opening: Philidor Defense: Lion Variation
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:29:30] } 1... e5 { [%eval 0.21] [%clk 1:30:54] } 2. Nf3 { [%eval 0.14] [%clk 1:29:12] } 2... Nf6 { [%eval 0.34] [%clk 1:30:46] } 3. Nc3 { [%eval 0.09] [%clk 1:19:45] } 3... d6 { [%eval 0.54] [%clk 1:29:34] } 4. d4 { [%eval 0.48] [%clk 1:18:52] } 4... Nbd7 { [%eval 0.44] [%clk 1:29:58] } 5. Rg1 { [%eval 0.4] [%clk 1:18:27] } 5... h5 { [%eval 0.59] [%clk 1:29:43] } 6. h3 { [%eval 0.58] [%clk 1:17:30] } 6... c6 { [%eval 0.52] [%clk 1:30:05] } 7. g4 { [%eval 0.05] [%clk 1:17:31] } 7... hxg4 { [%eval 0.0] [%clk 1:30:28] } 8. hxg4 { [%eval 0.14] [%clk 1:17:56] } 8... exd4 { [%eval 0.12] [%clk 1:30:52] } 9. Nxd4 { [%eval 0.0] [%clk 1:05:00] } 9... Ne5 { [%eval 0.0] [%clk 1:31:15] } 10. g5 { [%eval 0.0] [%clk 1:05:01] } 10... Nfg4 { [%eval 0.0] [%clk 1:31:40] } 11. Be2 { [%eval 0.0] [%clk 1:05:18] } 11... Nh2 { [%eval 0.0] [%clk 1:30:54] } 12. Bf4 { [%eval -0.51] [%clk 0:40:51] } 12... Qb6 { [%eval -0.45] [%clk 1:28:02] } 13. Nb3 { [%eval -0.4] [%clk 0:40:02] } 13... Rh3 { [%eval -0.46] [%clk 1:26:55] } 14. Bg3?! { [%eval -1.06] } { Inaccuracy. Bxe5 was best. } { [%clk 0:34:31] } 14... a5 { [%eval -1.01] [%clk 1:16:14] } 15. a4?! { [%eval -1.86] } { Inaccuracy. Bxh2 was best. } { [%clk 0:27:23] } 15... Be6 { [%eval -1.86] [%clk 1:08:06] } 16. Bxh2 { [%eval -1.91] [%clk 0:17:05] } 16... Rxh2 { [%eval -1.99] [%clk 1:08:25] } 17. Qd4 { [%eval -1.99] [%clk 0:17:30] } 17... Qb4 { [%eval -1.95] [%clk 1:07:09] } 18. Qxb4 { [%eval -1.88] [%clk 0:14:43] } 18... axb4 { [%eval -1.88] [%clk 1:07:33] } 19. Nd1 { [%eval -1.89] [%clk 0:15:08] } 19... Bxb3 { [%eval -1.95] [%clk 1:03:46] } 20. cxb3 { [%eval -1.92] [%clk 0:15:28] } 20... d5? { [%eval -0.35] } { Mistake. Nd7 was best. } { [%clk 1:04:01] } 21. exd5 { [%eval -0.35] [%clk 0:14:46] } 21... cxd5 { [%eval -0.26] [%clk 1:03:41] } 22. Ne3 { [%eval -0.35] [%clk 0:11:31] } 22... Bc5 { [%eval -0.38] [%clk 1:02:52] } 23. Bb5+ { [%eval -0.43] [%clk 0:09:51] } 23... Kf8 { [%eval -0.47] [%clk 1:02:18] } 24. O-O-O?? { [%eval -2.57] } { Blunder. Ke2 was best. } { [%clk 0:04:52] } 24... Bxe3+ { [%eval -2.67] [%clk 0:52:06] } 25. fxe3 { [%eval -2.44] [%clk 0:05:13] } 25... Rc8+ { [%eval -2.65] [%clk 0:52:33] } 26. Kb1 { [%eval -2.71] [%clk 0:05:19] } 26... Rcc2 { [%eval -2.44] [%clk 0:52:56] } 27. Rxd5? { [%eval -4.16] } { Mistake. Ka1 was best. } { [%clk 0:04:11] } 27... Rxb2+ { [%eval -4.18] [%clk 0:53:20] } 28. Ka1 { [%eval -4.61] [%clk 0:03:41] } 28... Ra2+ { [%eval -4.98] [%clk 0:53:26] } 29. Kb1 { [%eval -4.93] [%clk 0:04:02] } 29... Rhb2+ { [%eval -4.59] [%clk 0:53:42] } 30. Kc1 { [%eval -4.85] [%clk 0:04:13] } 30... Rc2+ { [%eval -4.57] [%clk 0:54:02] } 31. Kd1?! { [%eval -5.93] } { Inaccuracy. Kb1 was best. } { [%clk 0:03:34] } 31... Rf2 { [%eval -5.65] [%clk 0:51:23] } 32. Rc5?? { [%eval #-10] } { Checkmate is now unavoidable. Be2 was best. } { [%clk 0:01:28] } 32... Nf3 { [%eval #-9] [%clk 0:51:37] } 33. Rg4 { [%eval #-2] [%clk 0:01:35] } 33... Ra1+ { [%clk 0:51:53] } 34. Rc1 { [%clk 0:01:55] } 34... Rd2# 0-1