Event: FIDE World Youth U16 Chess Olympiad 2025
Site: https://lichess.org/broadcast/fide-world-youth-u16-chess-olympiad-2025--matches-19/round-6/t12a3W7l/IWOxlibz
White: Calles, Johan
WhiteElo: 1482
Black: Piza Vera, Andres
BlackElo: 1772
Result: 0-1
ECO: B23
Opening: Sicilian Defense: Grand Prix Attack
Variant: Standard
TimeControl: 2700+10

1. e4 { [%eval 0.18] [%clk 0:45:09] } 1... c5 { [%eval 0.24] [%clk 0:45:05] } 2. Nc3 { [%eval 0.26] [%clk 0:45:17] } 2... Nc6 { [%eval 0.23] [%clk 0:45:00] } 3. f4 { [%eval -0.09] [%clk 0:45:24] } 3... g6 { [%eval -0.17] [%clk 0:45:04] } 4. Nf3 { [%eval -0.11] [%clk 0:45:31] } 4... Bg7 { [%eval -0.16] [%clk 0:44:57] } 5. Bc4 { [%eval -0.24] [%clk 0:45:15] } 5... a6 { [%eval -0.02] [%clk 0:44:42] } 6. O-O { [%eval -0.1] [%clk 0:44:11] } 6... e6 { [%eval -0.07] [%clk 0:44:43] } 7. a3 { [%eval -0.47] [%clk 0:44:14] } 7... Nge7 { [%eval -0.19] [%clk 0:44:49] } 8. d3 { [%eval -0.17] [%clk 0:44:13] } 8... O-O { [%eval -0.12] [%clk 0:44:54] } 9. Qe1 { [%eval -0.44] [%clk 0:42:40] } 9... d5 { [%eval -0.14] [%clk 0:42:55] } 10. Ba2 { [%eval -0.21] [%clk 0:41:25] } 10... Nd4 { [%eval -0.22] [%clk 0:41:43] } 11. Nxd4 { [%eval -0.15] [%clk 0:38:41] } 11... cxd4 { [%eval -0.12] [%clk 0:41:45] } 12. Ne2 { [%eval -0.12] [%clk 0:38:25] } 12... dxe4 { [%eval -0.16] [%clk 0:41:12] } 13. dxe4 { [%eval -0.2] [%clk 0:38:32] } 13... d3 { [%eval 0.0] [%clk 0:41:18] } 14. cxd3 { [%eval 0.07] [%clk 0:38:21] } 14... Qxd3 { [%eval 0.16] [%clk 0:41:25] } 15. Ng3 { [%eval 0.0] [%clk 0:35:14] } 15... Rd8 { [%eval -0.04] [%clk 0:39:30] } 16. e5 { [%eval 0.02] [%clk 0:30:34] } 16... b5 { [%eval -0.01] [%clk 0:38:00] } 17. Qe4 { [%eval -0.19] [%clk 0:28:37] } 17... Qd4+ { [%eval 0.05] [%clk 0:35:27] } 18. Qxd4 { [%eval 0.07] [%clk 0:27:33] } 18... Rxd4 { [%eval 0.18] [%clk 0:35:34] } 19. Be3 { [%eval 0.08] [%clk 0:27:39] } 19... Rd3 { [%eval 0.09] [%clk 0:35:36] } 20. Bc5 { [%eval 0.22] [%clk 0:26:51] } 20... Nf5 { [%eval 0.23] [%clk 0:34:43] } 21. Nxf5 { [%eval 0.0] [%clk 0:26:47] } 21... gxf5 { [%eval 0.09] [%clk 0:32:42] } 22. Rad1 { [%eval 0.0] [%clk 0:26:53] } 22... Rxd1 { [%eval 0.0] [%clk 0:32:39] } 23. Rxd1 { [%eval 0.03] [%clk 0:27:02] } 23... Bb7 { [%eval 0.02] [%clk 0:32:48] } 24. Rd7 { [%eval 0.05] [%clk 0:27:09] } 24... Be4 { [%eval 0.13] [%clk 0:32:49] } 25. b4?! { [%eval -0.59] } { Inaccuracy. Bb3 was best. } { [%clk 0:23:48] } 25... Rc8 { [%eval -0.07] [%clk 0:30:16] } 26. Ra7?? { [%eval -3.99] } { Blunder. Bb3 was best. } { [%clk 0:22:08] } 26... Bf8 { [%eval -3.87] [%clk 0:30:22] } 27. Rxa6 { [%eval -4.32] [%clk 0:20:46] } 27... Bxc5+ { [%eval -3.99] [%clk 0:30:29] } 28. bxc5 { [%eval -4.02] [%clk 0:20:52] } 28... Rxc5 { [%eval -3.93] [%clk 0:30:37] } 29. Bb3 { [%eval -3.91] [%clk 0:20:22] } 29... Rc1+ { [%eval -3.92] [%clk 0:30:38] } 30. Kf2 { [%eval -3.88] [%clk 0:20:29] } 30... Rb1 { [%eval -3.97] [%clk 0:30:45] } 31. Bxe6 { [%eval -3.91] [%clk 0:17:09] } 31... fxe6 { [%eval -3.71] [%clk 0:30:52] } 32. Rxe6 { [%eval -4.03] [%clk 0:17:17] } 32... Rb2+ { [%eval -3.71] [%clk 0:30:57] } 33. Kg3?! { [%eval -5.3] } { Inaccuracy. Ke3 was best. } { [%clk 0:17:07] } 33... Rxg2+ { [%eval -5.05] [%clk 0:31:04] } 34. Kh3?? { [%eval #-4] } { Checkmate is now unavoidable. Kh4 was best. } { [%clk 0:17:11] } 34... Rg4 { [%eval #-3] [%clk 0:31:03] } 35. Re8+ { [%eval #-3] [%clk 0:16:14] } 35... Kf7 { [%eval #-2] [%clk 0:31:11] } 36. Rd8 { [%eval #-1] [%clk 0:12:19] } 36... Bg2# { [%clk 0:31:16] } 0-1