Event: Round 4: Sieiro Gonzalez, Luis - Mayer, Roland
Site: https://lichess.org/broadcast/fide-world-senior-championship-2025--open-65/round-4/9mgBGVnn/8wemmVso
Date: 2025-10-24
White: Sieiro Gonzalez, Luis
WhiteTitle: IM
WhiteElo: 2279
Black: Mayer, Roland
BlackElo: 2009
Result: 1/2-1/2
ECO: C77
Opening: Ruy Lopez: Morphy Defense, Anderssen Variation
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:57] } 1... e5 { [%eval 0.22] [%clk 1:30:51] } 2. Nf3 { [%eval 0.13] [%clk 1:31:15] } 2... Nc6 { [%eval 0.21] [%clk 1:31:11] } 3. Bb5 { [%eval 0.15] [%clk 1:31:36] } 3... a6 { [%eval 0.21] [%clk 1:31:33] } 4. Ba4 { [%eval 0.11] [%clk 1:32:00] } 4... Nf6 { [%eval 0.28] [%clk 1:31:53] } 5. d3 { [%eval 0.04] [%clk 1:32:03] } 5... d6 { [%eval 0.24] [%clk 1:31:31] } 6. c3 { [%eval 0.14] [%clk 1:32:04] } 6... Be7 { [%eval 0.29] [%clk 1:31:52] } 7. Nbd2 { [%eval 0.24] [%clk 1:32:10] } 7... O-O { [%eval 0.22] [%clk 1:31:37] } 8. Nf1 { [%eval -0.13] [%clk 1:32:14] } 8... b5 { [%eval 0.06] [%clk 1:30:59] } 9. Bc2 { [%eval 0.08] [%clk 1:32:02] } 9... d5 { [%eval 0.01] [%clk 1:30:29] } 10. Qe2 { [%eval -0.3] [%clk 1:32:01] } 10... d4 { [%eval -0.27] [%clk 1:17:07] } 11. Ng3 { [%eval -0.31] [%clk 1:32:12] } 11... dxc3?! { [%eval 0.35] } { Inaccuracy. a5 was best. } { [%clk 1:16:17] } 12. bxc3 { [%eval 0.39] [%clk 1:32:31] } 12... b4 { [%eval 0.39] [%clk 1:14:20] } 13. Bb2 { [%eval 0.14] [%clk 1:29:56] } 13... bxc3 { [%eval 0.12] [%clk 1:08:40] } 14. Bxc3 { [%eval 0.17] [%clk 1:30:16] } 14... Nd4 { [%eval 0.2] [%clk 1:00:58] } 15. Nxd4 { [%eval 0.18] [%clk 1:28:34] } 15... exd4 { [%eval 0.16] [%clk 0:59:55] } 16. Bd2 { [%eval 0.17] [%clk 1:28:51] } 16... Rb8 { [%eval 0.57] [%clk 0:52:48] } 17. O-O { [%eval 0.66] [%clk 1:28:40] } 17... Rb2 { [%eval 0.9] [%clk 0:51:11] } 18. Bc1 { [%eval 0.74] [%clk 1:27:21] } 18... Rb6 { [%eval 0.71] [%clk 0:50:54] } 19. Qf3 { [%eval 0.26] [%clk 1:22:09] } 19... Bg4 { [%eval 0.26] [%clk 0:35:31] } 20. Qf4 { [%eval 0.25] [%clk 1:22:31] } 20... Qd7 { [%eval 0.19] [%clk 0:35:23] } 21. e5? { [%eval -1.31] } { Mistake. h3 was best. } { [%clk 1:13:36] } 21... Nh5?! { [%eval -0.42] } { Inaccuracy. Nd5 was best. } { [%clk 0:35:07] } 22. Nxh5 { [%eval -0.33] [%clk 1:13:49] } 22... Bxh5 { [%eval -0.35] [%clk 0:35:35] } 23. Re1?! { [%eval -0.98] } { Inaccuracy. Bb3 was best. } { [%clk 1:11:38] } 23... c5 { [%eval -0.55] [%clk 0:34:02] } 24. Bb3 { [%eval -0.47] [%clk 1:07:35] } 24... Bg4 { [%eval -0.44] [%clk 0:34:15] } 25. h3 { [%eval -0.53] [%clk 0:53:15] } 1/2-1/2