[Event "XXXIII Pan-American Youth U12 Open"] [Site "https://lichess.org/study/NdPr3HIs/mmphL99K"] [Date "2023.08.15"] [Round "6.1"] [White "Liu, Aiden Q"] [Black "Sun, Ryan"] [Result "0-1"] [WhiteElo "2339"] [WhiteTeam "USA"] [BlackElo "2142"] [BlackTeam "USA"] [Annotator "Lang,JJ"] [Variant "Standard"] [ECO "B12"] [Opening "Caro-Kann Defense: Advance Variation, Short Variation"] [Source "https://lichess.org/study/NdPr3HIs/mmphL99K"] [Orientation "white"] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. O-O Nd7 7. Nbd2 h6 8. Nb3 g5 9. a4 a5 10. Bd2 Bg7 11. Ne1 O-O 12. Nd3 f6 13. f4 Ng6?! { This has been tried before, but Black cannot allow White to dictate the structural changes. } (13... gxf4 14. exf6 (14. Nxf4 fxe5! 15. Nh5 Be4 16. Bf3 Bxf3 17. Rxf3 Rxf3 18. Qxf3 Qf8) 14... Nxf6 15. Nxf4 e5 16. dxe5 Ne4 17. Be3 Bxe5 18. Bd4 Qd6) 14. fxg5 $146 (14. exf6 { has been played, and is also reasonable. }) 14... fxg5 15. Bg4 Nh4 16. Nbc5?! { White's logic is that, if he prevents ... c6-c5, his stable center should provide an advantage. However, after trading knights, Black prepares ... b7-b6, so White's plan was unsuccessful. } (16. Be1 Bxg4 17. Rxf8+ Nxf8 18. Qxg4 Nhg6 19. c3 { and Black has a harder time pushing ... c6-c5 with two white knights still guarding the c5-square. This is a better version of the position White had in mind! }) 16... Nxc5 17. Nxc5 Qe7 (17... Qc7) 18. Be1 Bxg4 19. Rxf8+ Rxf8 20. Qxg4 Nf5 21. Bxa5? Bxe5 { The a-pawn was not worth the e-pawn! } 22. Nb3 Bf4 { Now Black's grip on the kingside will prove decisive. } 23. Re1 Qf6 24. Kh1 Be3 25. Bc7 (25. Qe2 h5 $17) 25... Nxd4! 26. h4 (26. Nxd4?? Qf1+ 27. Rxf1 Rxf1#) 26... Nf5 27. c3 e5! 28. Na1 Rf7 29. Nc2 h5 30. Qb4 Ng3+! { Forcing mate. } 31. Kh2 g4 32. Bd8 Qxd8 33. Qxg4+ hxg4 34. Kxg3 Bf2+ 35. Kxg4 Qxh4# { 0-1 Black wins. } 0-1