Event: Round 4: Karlsson, Patrik - Isaev, Yuriy V
Site: https://lichess.org/broadcast/fide-world-senior-championship-2025--open-50/round-4/falyFzrg/a8OKzi3I
Date: 2025-10-24
White: Karlsson, Patrik
WhiteElo: 1915
Black: Isaev, Yuriy V
BlackElo: 2042
Result: 1/2-1/2
ECO: B47
Opening: Sicilian Defense: Taimanov Variation, Bastrikov Variation
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:58] } 1... c5 { [%eval 0.24] [%clk 1:23:45] } 2. Nf3 { [%eval 0.2] [%clk 1:31:19] } 2... e6 { [%eval 0.28] [%clk 1:23:53] } 3. d4 { [%eval 0.4] [%clk 1:30:39] } 3... cxd4 { [%eval 0.29] [%clk 1:24:17] } 4. Nxd4 { [%eval 0.34] [%clk 1:30:58] } 4... Nc6 { [%eval 0.28] [%clk 1:24:30] } 5. Nc3 { [%eval 0.26] [%clk 1:30:35] } 5... Qc7 { [%eval 0.35] [%clk 1:24:53] } 6. g3 { [%eval 0.27] [%clk 1:28:39] } 6... a6 { [%eval 0.26] [%clk 1:25:03] } 7. Bg2 { [%eval 0.22] [%clk 1:27:22] } 7... Nf6 { [%eval 0.32] [%clk 1:25:12] } 8. O-O { [%eval 0.38] [%clk 1:25:43] } 8... d6 { [%eval 0.44] [%clk 1:19:20] } 9. Nxc6 { [%eval 0.37] [%clk 1:16:32] } 9... bxc6 { [%eval 0.34] [%clk 1:19:34] } 10. Re1 { [%eval 0.21] [%clk 1:14:23] } 10... e5 { [%eval 0.48] [%clk 1:12:52] } 11. Na4 { [%eval 0.46] [%clk 1:03:54] } 11... Be7 { [%eval 0.49] [%clk 1:09:28] } 12. c4 { [%eval 0.51] [%clk 1:02:40] } 12... O-O { [%eval 0.49] [%clk 1:08:28] } 13. c5 { [%eval 0.29] [%clk 0:56:09] } 13... dxc5 { [%eval 0.34] [%clk 1:00:18] } 14. Be3 { [%eval 0.22] [%clk 0:50:05] } 14... Rb8 { [%eval 0.23] [%clk 0:48:39] } 15. Qc2 { [%eval 0.35] [%clk 0:46:56] } 15... Nd7 { [%eval 0.82] [%clk 0:40:01] } 16. b3 { [%eval 0.94] [%clk 0:41:28] } 16... a5 { [%eval 0.85] [%clk 0:39:56] } 17. Bf1 { [%eval 0.91] [%clk 0:38:46] } 17... Qa7 { [%eval 1.05] [%clk 0:37:16] } 18. Rac1 { [%eval 1.04] [%clk 0:38:06] } 18... Ba6 { [%eval 1.0] [%clk 0:36:38] } 19. Bxa6 { [%eval 1.06] [%clk 0:32:31] } 19... Qxa6 { [%eval 0.97] [%clk 0:37:04] } 20. Nxc5?! { [%eval 0.02] } { Inaccuracy. Red1 was best. } { [%clk 0:32:10] } 20... Bxc5 { [%eval 0.06] [%clk 0:36:31] } 21. Bxc5 { [%eval 0.14] [%clk 0:32:17] } 21... Rfe8 { [%eval 0.66] [%clk 0:32:45] } 22. Red1?! { [%eval 0.1] } { Inaccuracy. Bd6 was best. } { [%clk 0:31:32] } 22... Nxc5 { [%eval 0.1] [%clk 0:30:40] } 1/2-1/2