[Event "National K-12 Grade Championships 2022"] [Site "National Harbor, Maryland, Uni"] [Date "2022.12.10"] [Round "5.11"] [White "Guha, Eshan"] [Black "Underwood, Toshinori"] [Result "0-1"] [WhiteElo "2212"] [BlackElo "2040"] [Variant "Standard"] [ECO "E00"] [Opening "Catalan Opening"] [StudyName "K-12 Grade Championships"] [ChapterName "Guha, Eshan - Underwood, Toshinori"] [ChapterURL "https://lichess.org/study/D59ifJA3/QLaSvnJK"] [Annotator "https://lichess.org/@/ChessLifeOnline"] [Orientation "white"] 1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Nd2 O-O 5. Bg2 d5 6. Nf3 b6 7. O-O Bb7 8. Ne5 a5 9. a3 Be7 10. b3 c5 11. dxc5 Bxc5 12. Bb2 Qe7 13. cxd5 Bxd5 14. Bxd5 Nxd5 15. Ne4 Rd8 16. Qb1 f6 17. Nxc5 Qxc5 18. Nf3 e5 19. Rc1 (19. Bxe5!? { White might have had better chances in the resulting material imbalance after } 19... fxe5 20. Ng5! { double-attacking the h7- and e6-squares. } 20... Nf6 21. Ne6 Qe7 22. Nxd8 Qxd8 $13) 19... Qb5 20. Qc2 Na6 21. e4 Ne7 22. a4 Qd3 23. Ba3 Kf7 24. Nh4 g6 25. Qc4+?! (25. Bxe7 Qxc2 26. Rxc2 Kxe7 27. Ng2 $15) 25... Qxc4 26. Rxc4 Rac8 27. Rb1? { While White attempts to gain counterplay on the b6-pawn, this is a gross misevaluation of the position. } (27. Rac1? Rxc4 28. Rxc4 Rd3) (27. Rxc8 { This is likely White's best chance. } 27... Rxc8 28. Rd1 Nc5 29. Bxc5 Rxc5 { Simplifying towards a rook endgame should increase White's drawing chances. }) 27... Rxc4 28. bxc4 Nc8! { Black's c8-knight is fine, considering that neither of White's minor pieces are major factors. The difference in activity between the rooks settles this game in Black's favor. } 29. c5 Nxc5 30. Bxc5 bxc5 31. Rb7+ Ne7 32. Kf1 Rd4 $19 33. Rb5 Rxa4 34. Rxc5 Ke6 35. Rb5 Kd6 36. Rb6+ Nc6 37. f3 Rb4 38. Rxb4 Nxb4 39. Ke2 Kc5 40. Kd2 Kc4 41. Kc1 Kb3 42. Ng2 a4 { 0-1 Black wins. } 0-1