Event: FIDE U16 Olympiad_boards_1-80
Date: 2023-08-14
White: Tong(Qd) Xiao
Black: Matthias Mattenberger
Result: 1-0
ECO: B90
Opening: Sicilian Defense: Najdorf Variation
Variant: Standard
TimeControl: 2700+10

1. e4 { [%eval 0.36] [%clk 0:45:18] } 1... c5 { [%eval 0.32] [%clk 0:45:14] } 2. Nf3 { [%eval 0.0] [%clk 0:45:27] } 2... d6 { [%eval 0.0] [%clk 0:45:22] } 3. d4 { [%eval 0.25] [%clk 0:45:36] } 3... cxd4 { [%eval 0.13] [%clk 0:45:31] } 4. Nxd4 { [%eval 0.27] [%clk 0:45:45] } 4... Nf6 { [%eval 0.3] [%clk 0:45:39] } 5. Nc3 { [%eval 0.21] [%clk 0:45:54] } 5... a6 { [%eval 0.39] [%clk 0:45:48] } 6. Qd3 { [%eval -0.09] [%clk 0:46:03] } 6... Nbd7 { [%eval 0.0] [%clk 0:45:56] } 7. Be2 { [%eval 0.0] [%clk 0:46:12] } 7... b5 { [%eval 0.0] [%clk 0:46:01] } 8. b4 { [%eval 0.11] [%clk 0:45:24] } 8... Bb7 { [%eval 0.15] [%clk 0:44:18] } 9. O-O { [%eval 0.11] [%clk 0:44:41] } 9... g6 { [%eval 0.0] [%clk 0:40:00] } 10. a4 { [%eval 0.0] [%clk 0:42:37] } 10... bxa4 { [%eval 0.07] [%clk 0:32:43] } 11. Rxa4 { [%eval 0.09] [%clk 0:42:23] } 11... Ne5 { [%eval 0.0] [%clk 0:30:54] } 12. Qe3 { [%eval 0.0] [%clk 0:39:19] } 12... h5 { [%eval 0.43] [%clk 0:29:11] } 13. Nd5 { [%eval 0.02] [%clk 0:37:16] } 13... Nxd5 { [%eval 0.02] [%clk 0:19:28] } 14. exd5 { [%eval 0.0] [%clk 0:37:23] } 14... Bxd5 { [%eval 0.06] [%clk 0:18:50] } 15. Bxa6 { [%eval -0.47] [%clk 0:36:08] } 15... Bg7 { [%eval -0.39] [%clk 0:17:55] } 16. Ra5 { [%eval -0.77] [%clk 0:28:49] } 16... Rxa6? { [%eval 0.61] } { Mistake. O-O was best. } { [%clk 0:14:31] } 17. Rxa6 { [%eval 0.52] [%clk 0:28:52] } 17... Qc8 { [%eval 0.67] [%clk 0:14:01] } 18. b5 { [%eval 0.43] [%clk 0:26:29] } 18... Ng4? { [%eval 1.63] } { Mistake. O-O was best. } { [%clk 0:09:16] } 19. Qd3 { [%eval 1.81] [%clk 0:24:16] } 19... Ne5 { [%eval 1.57] [%clk 0:07:28] } 20. Qd1?! { [%eval 0.6] } { Inaccuracy. Qh3 was best. } { [%clk 0:22:43] } 20... O-O?? { [%eval 3.07] } { Blunder. Qb7 was best. } { [%clk 0:04:00] } 21. Nf5 { [%eval 3.11] [%clk 0:22:27] } 21... Qxf5 { [%eval 3.53] [%clk 0:01:24] } 22. Qxd5 { [%eval 3.65] [%clk 0:22:36] } 22... Qxc2 { [%eval 4.46] [%clk 0:01:33] } 23. Ra8 { [%eval 4.61] [%clk 0:20:26] } 23... Nd3 { [%eval 5.23] [%clk 0:00:12] } 24. Be3 { [%eval 4.73] [%clk 0:20:13] } 24... Nb4?! { [%eval 6.03] } { Inaccuracy. Rxa8 was best. } { [%clk 0:00:17] } 25. Rxf8+ { [%eval 6.03] [%clk 0:20:16] } 25... Bxf8 { [%eval 6.0] [%clk 0:00:26] } 26. Qa8 { [%eval 6.04] [%clk 0:20:20] } 1-0