Event: Round 9: Osvaldo Zambrana - Sandro Mareco
Date: 2023-12-02
White: Osvaldo Zambrana
WhiteTitle: GM
WhiteElo: 2400
Black: Sandro Mareco
BlackTitle: GM
BlackElo: 2606
Result: 1-0
ECO: C50
Opening: Italian Game: Giuoco Piano
Variant: Standard

1. e4 { [%eval 0.36] [%clk 1:17:36] } 1... e5 { [%eval 0.35] [%clk 1:30:56] } 2. Nf3 { [%eval 0.29] [%clk 1:17:57] } 2... Nc6 { [%eval 0.32] [%clk 1:31:23] } 3. Bc4 { [%eval 0.21] [%clk 1:18:21] } 3... Bc5 { [%eval 0.2] [%clk 1:31:49] } 4. O-O { [%eval 0.21] [%clk 1:18:44] } 4... Nf6 { [%eval 0.21] [%clk 1:32:17] } 5. d3 { [%eval 0.24] [%clk 1:19:07] } 5... d6 { [%eval 0.21] [%clk 1:32:43] } 6. c3 { [%eval 0.17] [%clk 1:19:32] } 6... a5 { [%eval 0.24] [%clk 1:33:11] } 7. Re1 { [%eval 0.16] [%clk 1:19:23] } 7... O-O { [%eval 0.0] [%clk 1:33:34] } 8. h3 { [%eval 0.23] [%clk 1:19:44] } 8... Be6 { [%eval 0.3] [%clk 1:33:33] } 9. Nbd2 { [%eval 0.14] [%clk 1:19:46] } 9... Ba7 { [%eval 0.18] [%clk 1:25:27] } 10. a4 { [%eval 0.05] [%clk 1:12:27] } 10... h6 { [%eval 0.15] [%clk 1:18:56] } 11. Nf1?! { [%eval -0.81] } { Inaccuracy. Bb3 was best. } { [%clk 1:01:28] } 11... Nxe4 { [%eval -0.82] [%clk 1:11:43] } 12. Rxe4 { [%eval -0.68] [%clk 1:00:49] } 12... d5 { [%eval -0.67] [%clk 1:12:09] } 13. Bxd5 { [%eval -0.84] [%clk 1:00:57] } 13... Bxd5 { [%eval -0.78] [%clk 0:56:59] } 14. Re1 { [%eval -0.82] [%clk 1:01:07] } 14... Bc5 { [%eval -0.76] [%clk 0:50:12] } 15. Ng3 { [%eval -0.9] [%clk 0:43:32] } 15... Re8 { [%eval -0.78] [%clk 0:49:59] } 16. Be3 { [%eval -0.88] [%clk 0:35:28] } 16... Bf8 { [%eval -0.89] [%clk 0:49:06] } 17. Nd2 { [%eval -1.33] [%clk 0:29:05] } 17... g6 { [%eval -0.91] [%clk 0:38:53] } 18. Rf1? { [%eval -2.15] } { Mistake. f3 was best. } { [%clk 0:18:34] } 18... f5 { [%eval -2.19] [%clk 0:23:55] } 19. f4 { [%eval -2.31] [%clk 0:18:50] } 19... exf4 { [%eval -2.28] [%clk 0:12:04] } 20. Bxf4 { [%eval -2.42] [%clk 0:19:18] } 20... g5 { [%eval -2.35] [%clk 0:09:59] } 21. Nxf5 { [%eval -2.34] [%clk 0:19:38] } 21... gxf4 { [%eval -2.28] [%clk 0:10:26] } 22. Rxf4 { [%eval -2.25] [%clk 0:19:59] } 22... Kh8 { [%eval -2.7] [%clk 0:10:38] } 23. Qf1 { [%eval -2.57] [%clk 0:18:09] } 23... Ne5 { [%eval -2.65] [%clk 0:09:54] } 24. d4 { [%eval -2.85] [%clk 0:17:38] } 24... Ng6 { [%eval -2.82] [%clk 0:10:00] } 25. Rg4 { [%eval -3.39] [%clk 0:10:35] } 25... Ra6 { [%eval -3.44] [%clk 0:10:19] } 26. Qd3?! { [%eval -4.57] } { Inaccuracy. c4 was best. } { [%clk 0:09:04] } 26... Be6?? { [%eval 2.62] } { Blunder. h5 was best. } { [%clk 0:07:55] } 27. Rxg6 { [%eval 2.91] [%clk 0:08:43] } 1-0