Event: Round 6 - GM B: Aleksandr Ostrovskiy - Alexander Kaliksteyn
Site: https://lichess.org/study/7LPVafED/o3pJb30E
Date: 2021-07-31
White: Aleksandr Ostrovskiy
Black: Alexander Kaliksteyn
Result: 1/2-1/2
ECO: B40
Opening: Sicilian Defense: French Variation
Variant: Standard

1. e4 { [%eval 0.24] [%clk 1:30:20] } 1... c5 { [%eval 0.32] [%clk 1:30:51] } 2. Nf3 { [%eval 0.0] [%clk 1:30:43] } 2... e6?! { [%eval 0.54] } { Inaccuracy. d6 was best. } { [%clk 1:31:11] } 3. g3 { [%eval 0.25] [%clk 1:28:35] } 3... Nc6 { [%eval 0.15] [%clk 1:31:19] } 4. Bg2 { [%eval 0.2] [%clk 1:28:51] } 4... Nf6 { [%eval 0.17] [%clk 1:31:29] } 5. Nc3 { [%eval 0.08] [%clk 1:28:22] } 5... d5 { [%eval 0.0] [%clk 1:30:37] } 6. exd5 { [%eval 0.25] [%clk 1:28:18] } 6... exd5 { [%eval 0.4] [%clk 1:31:05] } 7. d4 { [%eval 0.27] [%clk 1:28:40] } 7... cxd4 { [%eval 0.12] [%clk 1:31:17] } 8. Nxd4 { [%eval 0.12] [%clk 1:29:01] } 8... Bg4 { [%eval -0.01] [%clk 1:31:39] } 9. Qd3 { [%eval 0.04] [%clk 1:29:22] } 9... Bc5 { [%eval -0.07] [%clk 1:31:10] } 10. Qe3+ { [%eval 0.0] [%clk 1:13:07] } 10... Ne7 { [%eval -0.01] [%clk 1:17:57] } 11. h3 { [%eval -0.27] [%clk 0:57:10] } 11... Bh5 { [%eval -0.25] [%clk 1:15:22] } 12. g4?! { [%eval -0.76] } { Inaccuracy. Qd3 was best. } { [%clk 0:40:56] } 12... Bg6 { [%eval -0.86] [%clk 1:13:48] } 13. O-O?! { [%eval -1.63] } { Inaccuracy. Qf4 was best. } { [%clk 0:33:41] } 13... O-O?! { [%eval -0.77] } { Inaccuracy. h5 was best. } { [%clk 1:11:21] } 14. Na4?! { [%eval -1.36] } { Inaccuracy. Qf4 was best. } { [%clk 0:31:20] } 14... Bxd4 { [%eval -1.02] [%clk 1:01:29] } 15. Qxd4 { [%eval -0.71] [%clk 0:31:34] } 15... Bxc2 { [%eval -0.5] [%clk 0:47:37] } 16. Nc3 { [%eval -0.44] [%clk 0:17:48] } 16... Nc6 { [%eval -0.43] [%clk 0:29:57] } 17. Qd2 { [%eval -0.45] [%clk 0:17:39] } 17... Bg6?! { [%eval 0.16] } { Inaccuracy. Be4 was best. } { [%clk 0:28:06] } 18. Nxd5 { [%eval 0.0] [%clk 0:16:13] } 18... Nxd5 { [%eval 0.0] [%clk 0:27:07] } 19. Qxd5 { [%eval 0.0] [%clk 0:09:44] } 19... Qxd5 { [%eval 0.01] } 20. Bxd5 { [%eval 0.0] } 20... Nb4 { [%eval 0.0] } 21. Bxb7 { [%eval 0.0] } 21... Rab8 { [%eval 0.0] } 22. Bf3 { [%eval -0.07] } 22... Nc2 { [%eval -0.07] } 23. b4?? { [%eval -4.38] } { Blunder. Bf4 was best. } 23... Nxb4?? { [%eval 0.34] } { Blunder. Nxa1 was best. } { [%clk 0:25:47] } 24. Bf4 { [%eval 0.47] } 1/2-1/2