Event: Round 1: Omar Torbjorn Osterhus - Ran Song
Date: 2024-02-23
White: Omar Torbjorn Osterhus
WhiteElo: 1309
Black: Ran Song
BlackElo: 1961
Result: 0-1
ECO: B30
Opening: Sicilian Defense: Old Sicilian
Variant: Standard

1. e4 { [%eval 0.13] [%clk 1:30:54] } 1... c5 { [%eval 0.33] [%clk 1:30:57] } 2. Nf3 { [%eval 0.22] [%clk 1:31:16] } 2... Nc6 { [%eval 0.31] [%clk 1:31:23] } 3. c4 { [%eval 0.03] [%clk 1:31:39] } 3... g6 { [%eval 0.52] [%clk 1:31:38] } 4. Nc3?! { [%eval -0.25] } { Inaccuracy. d4 was best. } { [%clk 1:31:17] } 4... Bg7 { [%eval -0.18] [%clk 1:31:53] } 5. Be2 { [%eval -0.29] [%clk 1:31:18] } 5... Nf6 { [%eval -0.15] [%clk 1:26:15] } 6. O-O { [%eval -0.27] [%clk 1:30:51] } 6... O-O { [%eval -0.4] [%clk 1:26:41] } 7. h3 { [%eval -0.2] [%clk 1:27:12] } 7... d6 { [%eval -0.13] [%clk 1:27:01] } 8. d3 { [%eval -0.32] [%clk 1:25:41] } 8... a6 { [%eval -0.14] [%clk 1:26:06] } 9. Be3 { [%eval -0.14] [%clk 1:20:26] } 9... Rb8?! { [%eval 0.42] } { Inaccuracy. e5 was best. } { [%clk 1:26:23] } 10. Rb1?! { [%eval -0.24] } { Inaccuracy. d4 was best. } { [%clk 1:17:16] } 10... b5 { [%eval -0.1] [%clk 1:25:23] } 11. cxb5 { [%eval -0.14] [%clk 1:12:04] } 11... axb5 { [%eval -0.18] [%clk 1:25:51] } 12. Qd2?! { [%eval -1.07] } { Inaccuracy. a3 was best. } { [%clk 1:03:39] } 12... Be6 { [%eval -0.99] [%clk 1:09:00] } 13. Ng5 { [%eval -0.94] [%clk 0:56:22] } 13... b4 { [%eval -1.03] [%clk 1:05:29] } 14. Nd5?? { [%eval -3.32] } { Blunder. Nxe6 was best. } { [%clk 0:48:42] } 14... Bxd5 { [%eval -3.29] [%clk 1:02:52] } 15. exd5 { [%eval -3.33] [%clk 0:48:57] } 15... Nxd5 { [%eval -3.09] [%clk 1:03:11] } 16. Bf3 { [%eval -3.53] [%clk 0:45:32] } 16... Nxe3 { [%eval -3.41] [%clk 1:03:36] } 17. fxe3 { [%eval -3.49] [%clk 0:44:18] } 17... Ne5 { [%eval -3.58] [%clk 1:03:55] } 18. Bd5 { [%eval -4.47] [%clk 0:41:15] } 18... e6 { [%eval -4.43] [%clk 1:03:26] } 19. Nxe6 { [%eval -4.56] [%clk 0:37:39] } 19... fxe6 { [%eval -4.78] [%clk 1:03:49] } 20. Bxe6+ { [%eval -4.6] [%clk 0:38:04] } 20... Kh8 { [%eval -4.55] [%clk 1:04:16] } 21. d4 { [%eval -5.05] [%clk 0:37:25] } 21... cxd4 { [%eval -4.73] [%clk 1:02:43] } 22. exd4 { [%eval -5.06] [%clk 0:37:42] } 22... Qb6 { [%eval -5.09] [%clk 0:59:51] } 23. Kh1 { [%eval -5.14] [%clk 0:37:09] } 23... Nc6 { [%eval -4.93] [%clk 0:59:39] } 24. d5 { [%eval -5.23] [%clk 0:37:10] } 24... Nd4 { [%eval -4.7] [%clk 0:53:56] } 25. Rf7 { [%eval -5.89] [%clk 0:33:01] } 25... Rxf7 { [%eval -5.57] [%clk 0:53:58] } 26. Bxf7 { [%eval -5.57] [%clk 0:33:28] } 26... Nf5 { [%eval -5.44] } 27. g4 { [%eval -5.45] [%clk 0:23:46] } 27... Ng3+ { [%eval -5.37] } 28. Kg2 { [%eval -5.53] [%clk 0:24:06] } 28... Ne4 { [%eval -5.36] } 29. Qc2? { [%eval -11.24] } { Mistake. Qe2 was best. } { [%clk 0:23:06] } 29... Qe3 { [%eval -9.6] [%clk 0:51:11] } 30. Rf1? { [%eval #-6] } { Checkmate is now unavoidable. Bxg6 was best. } { [%clk 0:19:17] } 30... Qg3+ { [%eval #-5] [%clk 0:51:27] } 31. Kh1 { [%eval #-5] [%clk 0:19:42] } 31... Qxh3+ { [%eval #-4] [%clk 0:51:54] } 32. Kg1 { [%eval #-4] [%clk 0:19:39] } 32... Bd4+ { [%eval #-3] [%clk 0:52:17] } 0-1