Event: Round 7: Osvaldo Zambrana - Lucas Costamilan Tomiello
Date: 2023-09-20
White: Osvaldo Zambrana
WhiteTitle: GM
Black: Lucas Costamilan Tomiello
Result: 1-0
ECO: B33
Opening: Sicilian Defense: Lasker-Pelikan Variation
Variant: Standard

1. e4 { [%eval 0.36] [%clk 1:30:53] } 1... c5 { [%eval 0.32] [%clk 1:30:44] } 2. Nf3 { [%eval 0.0] [%clk 1:30:56] } 2... Nc6 { [%eval 0.0] [%clk 1:30:42] } 3. d4 { [%eval 0.33] [%clk 1:31:10] } 3... cxd4 { [%eval 0.38] [%clk 1:31:06] } 4. Nxd4 { [%eval 0.29] [%clk 1:31:35] } 4... Nf6 { [%eval 0.36] [%clk 1:31:16] } 5. Nc3 { [%eval 0.32] [%clk 1:31:15] } 5... e5 { [%eval 0.13] [%clk 1:31:17] } 6. Ndb5 { [%eval 0.38] [%clk 1:31:08] } 6... d6 { [%eval 0.35] [%clk 1:31:30] } 7. Nd5 { [%eval 0.29] [%clk 1:29:38] } 7... Nxd5 { [%eval 0.38] [%clk 1:31:47] } 8. exd5 { [%eval 0.16] [%clk 1:30:04] } 8... Nb8 { [%eval 0.31] [%clk 1:31:16] } 9. a4 { [%eval 0.36] [%clk 1:30:18] } 9... Be7 { [%eval 0.27] [%clk 1:29:38] } 10. Be2 { [%eval 0.32] [%clk 1:30:37] } 10... O-O { [%eval 0.28] [%clk 1:29:46] } 11. Bd2 { [%eval 0.24] [%clk 1:30:56] } 11... a6 { [%eval 0.4] [%clk 1:29:01] } 12. Na3 { [%eval 0.38] [%clk 1:31:20] } 12... a5 { [%eval 0.29] [%clk 1:27:27] } 13. O-O { [%eval 0.28] [%clk 1:26:26] } 13... Nd7 { [%eval 0.33] [%clk 1:26:39] } 14. Bb5 { [%eval 0.33] [%clk 1:19:49] } 14... f5 { [%eval 0.16] [%clk 1:21:09] } 15. Nc4 { [%eval 0.16] [%clk 1:20:00] } 15... f4 { [%eval 0.24] [%clk 1:15:32] } 16. Ra3 { [%eval -0.01] [%clk 1:12:01] } 16... b6?! { [%eval 0.61] } { Inaccuracy. Nf6 was best. } { [%clk 1:07:21] } 17. b4 { [%eval 0.6] [%clk 1:08:10] } 17... axb4 { [%eval 0.64] [%clk 1:02:32] } 18. Bxb4 { [%eval 0.63] [%clk 1:08:33] } 18... Rf6 { [%eval 0.83] [%clk 0:58:19] } 19. Re1 { [%eval 0.52] [%clk 0:55:24] } 19... Rh6?! { [%eval 1.21] } { Inaccuracy. Rg6 was best. } { [%clk 0:51:21] } 20. Qf3?! { [%eval 0.52] } { Inaccuracy. a5 was best. } { [%clk 0:39:00] } 20... Rb8 { [%eval 0.53] [%clk 0:48:32] } 21. a5 { [%eval 0.39] [%clk 0:29:51] } 21... bxa5 { [%eval 0.48] [%clk 0:47:57] } 22. Bxa5 { [%eval 0.41] [%clk 0:30:20] } 22... Qf8 { [%eval 0.46] [%clk 0:47:38] } 23. Bc6 { [%eval 0.47] [%clk 0:28:01] } 23... Nf6 { [%eval 0.75] [%clk 0:38:23] } 24. Bc7 { [%eval 1.06] [%clk 0:22:31] } 24... Bg4 { [%eval 0.89] [%clk 0:37:27] } 25. Qc3 { [%eval 1.02] [%clk 0:22:56] } 25... Rc8 { [%eval 0.91] [%clk 0:36:49] } 26. f3? { [%eval -0.32] } { Mistake. Ra7 was best. } { [%clk 0:23:25] } 26... Bf5?! { [%eval 0.35] } { Inaccuracy. Bd7 was best. } { [%clk 0:34:18] } 27. Ra7 { [%eval 0.5] [%clk 0:23:33] } 27... e4?! { [%eval 1.57] } { Inaccuracy. Ne8 was best. } { [%clk 0:31:06] } 28. Nb6 { [%eval 1.14] [%clk 0:22:39] } 28... exf3?? { [%eval 3.68] } { Blunder. Rxc7 was best. } { [%clk 0:23:12] } 29. Qxf3 { [%eval 3.01] [%clk 0:22:12] } 29... Ng4 { [%eval 3.25] [%clk 0:20:50] } 30. Nxc8 { [%eval 3.18] [%clk 0:22:26] } 30... Bxc8 { [%eval 3.07] [%clk 0:20:55] } 31. Bb6 { [%eval 2.73] [%clk 0:14:59] } 31... Ne5 { [%eval 2.25] [%clk 0:17:17] } 32. Qb3 { [%eval 1.69] [%clk 0:15:27] } 32... f3 { [%eval 2.59] [%clk 0:13:23] } 33. Ra8?? { [%eval 0.56] } { Blunder. Rxe5 was best. } { [%clk 0:07:17] } 33... Rg6?? { [%eval 4.17] } { Blunder. Rxh2 was best. } { [%clk 0:03:16] } 34. g3 { [%eval 4.17] [%clk 0:02:16] } 34... Qf5?! { [%eval 5.68] } { Inaccuracy. f2+ was best. } { [%clk 0:00:51] } 35. Rxe5 { [%eval 5.5] [%clk 0:01:03] } 35... dxe5? { [%eval 12.68] } { Mistake. Qxe5 was best. } { [%clk 0:00:34] } 36. d6+ { [%eval 22.88] [%clk 0:01:07] } 36... Re6?! { [%eval #11] } { Checkmate is now unavoidable. Kf8 was best. } { [%clk 0:00:44] } 37. Rxc8+?! { [%eval 11.53] } { Lost forced checkmate sequence. dxe7 was best. } { [%clk 0:00:58] } 1-0