Event: Round 4: Grossmann, Piet - Ollenberger, Roland
Date: 2025-05-19
White: Grossmann, Piet
WhiteElo: 2063
Black: Ollenberger, Roland
BlackTitle: FM
BlackElo: 2206
Result: 0-1
ECO: B77
Opening: Sicilian Defense: Dragon Variation, Yugoslav Attack, Sosonko Variation
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:57] } 1... c5 { [%eval 0.25] [%clk 1:28:57] } 2. Nf3 { [%eval 0.2] [%clk 1:31:21] } 2... d6 { [%eval 0.31] [%clk 1:29:16] } 3. d4 { [%eval 0.22] [%clk 1:31:40] } 3... cxd4 { [%eval 0.19] [%clk 1:29:40] } 4. Nxd4 { [%eval 0.18] [%clk 1:32:06] } 4... Nf6 { [%eval 0.31] [%clk 1:30:02] } 5. Nc3 { [%eval 0.32] [%clk 1:32:32] } 5... g6 { [%eval 0.59] [%clk 1:30:15] } 6. Be3 { [%eval 0.43] [%clk 1:32:57] } 6... Bg7 { [%eval 0.46] [%clk 1:30:38] } 7. f3 { [%eval 0.32] [%clk 1:33:19] } 7... O-O { [%eval 0.58] [%clk 1:30:59] } 8. Bc4 { [%eval 0.61] [%clk 1:33:43] } 8... Nc6 { [%eval 0.66] [%clk 1:31:05] } 9. Qd2 { [%eval 0.62] [%clk 1:34:09] } 9... Nd7 { [%eval 1.05] [%clk 1:31:07] } 10. O-O-O { [%eval 1.1] [%clk 1:30:36] } 10... Nb6 { [%eval 1.0] [%clk 1:31:22] } 11. Bb3 { [%eval 0.72] [%clk 1:31:02] } 11... Na5 { [%eval 0.72] [%clk 1:31:33] } 12. Qe2 { [%eval 0.62] [%clk 1:26:25] } 12... Nxb3+ { [%eval 1.09] [%clk 1:31:45] } 13. cxb3 { [%eval 1.03] [%clk 1:26:03] } 13... d5 { [%eval 0.71] [%clk 1:28:54] } 14. Kb1?? { [%eval -2.36] } { Blunder. Ndb5 was best. } { [%clk 1:21:21] } 14... e5 { [%eval -2.25] [%clk 1:27:01] } 15. Nc2 { [%eval -2.4] [%clk 1:18:35] } 15... d4 { [%eval -2.31] [%clk 1:27:18] } 16. Bc1 { [%eval -2.38] [%clk 1:17:39] } 16... Qe7 { [%eval -1.86] [%clk 1:18:19] } 17. Nb5 { [%eval -2.17] [%clk 1:17:40] } 17... Be6 { [%eval -2.23] [%clk 1:18:00] } 18. Ne1?! { [%eval -2.95] } { Inaccuracy. h4 was best. } { [%clk 1:15:10] } 18... a5 { [%eval -2.99] [%clk 1:13:07] } 19. Nd3 { [%eval -3.14] [%clk 1:12:35] } 19... a4 { [%eval -2.96] [%clk 1:09:02] } 20. Bd2 { [%eval -3.02] [%clk 1:10:02] } 20... axb3 { [%eval -3.01] [%clk 1:08:33] } 21. Bb4 { [%eval -2.96] [%clk 1:10:13] } 21... Qd8 { [%eval -3.07] [%clk 1:03:43] } 22. Na3 { [%eval -3.0] [%clk 0:58:32] } 22... bxa2+ { [%eval -2.62] [%clk 0:57:11] } 23. Ka1 { [%eval -2.71] [%clk 0:58:57] } 23... Re8 { [%eval -2.62] [%clk 0:57:26] } 24. Nc5?! { [%eval -3.36] } { Inaccuracy. h4 was best. } { [%clk 0:55:09] } 24... Na4 { [%eval -3.05] [%clk 0:56:24] } 25. h4? { [%eval -4.81] } { Mistake. Nd3 was best. } { [%clk 0:48:36] } 25... Nxc5 { [%eval -4.63] [%clk 0:47:29] } 26. Bxc5 { [%eval -4.67] [%clk 0:49:00] } 26... Qa5 { [%eval -4.45] [%clk 0:47:40] } 27. Nb5 { [%eval -4.97] [%clk 0:47:51] } 27... Rec8 { [%eval -5.36] [%clk 0:46:17] } 28. b4 { [%eval -5.21] [%clk 0:47:39] } 28... Qa6 { [%eval -5.4] [%clk 0:46:26] } 29. h5 { [%eval -5.44] [%clk 0:46:48] } 29... b6 { [%eval -5.43] [%clk 0:46:13] } 30. Be7 { [%eval -5.5] [%clk 0:44:50] } 30... Bc4 { [%eval -5.41] [%clk 0:46:34] } 31. Qf2 { [%eval -5.99] [%clk 0:45:05] } 31... Qxb5 { [%eval -5.83] [%clk 0:46:20] } 32. hxg6 { [%eval -6.1] [%clk 0:45:24] } 32... fxg6 { [%eval -5.81] [%clk 0:46:28] } 33. Qh4 { [%eval -6.89] [%clk 0:44:11] } 33... h6 { [%eval -6.78] [%clk 0:46:10] } 34. Bf6 { [%eval -6.42] [%clk 0:43:57] } 34... Qxb4 { [%eval -9.05] [%clk 0:44:54] } 35. Rc1 { [%eval -10.49] [%clk 0:44:23] } 35... Bd3 { [%eval -8.79] [%clk 0:44:17] } 0-1