[Event "2025 National K-12 Chess Championship"] [Site "Spokane, WI USA, United State"] [Date "2025.12.14"] [Round "7.24"] [White "Boyer-Olson, Jack"] [Black "Xu, Olivia"] [Result "1-0"] [WhiteElo "2034"] [WhiteTeam "USA"] [BlackElo "1832"] [BlackTeam "USA"] [Annotator "Foisor,Sabina"] [Variant "Standard"] [ECO "?"] [Opening "?"] [StudyName "2025 National K-12 Grade Championships, Pt. 2"] [ChapterName "Boyer-Olson, Jack - Xu, Olivia"] [ChapterURL "https://lichess.org/study/NnKpzTbl/yKQeAt0z"] [FEN "2rr2k1/p1qn1pp1/1pp1p3/5b1p/2PP4/1PB1R1PP/PQ3PB1/4R1K1 b - - 0 26"] [SetUp "1"] [Orientation "white"] { This position is already inferior for Black, but after } 26... f6?? { White was able to capitalize on all of the weaknesses left behind and win a beautiful game! } 27. Qe2! c5 28. d5! exd5 29. Bxd5+ Kh8 30. Qxh5+ Bh7 31. Be4 Nf8 32. Bxh7 Nxh7 33. Re8+ Rxe8 34. Rxe8+ Rxe8 35. Qxe8+ Nf8 36. Qxf8+ Kh7 37. Qe8 a6 38. Qe4+ Kg8 39. Qa8+ Kh7 40. Qxa6 Qc6 41. Qa3 Qf3 42. Qc1 g5 43. Qe3 Qf5 44. Qe7+ Kg6 45. g4 Qf3 46. Qxf6+ Qxf6 47. Bxf6 Kxf6 48. Kg2 Ke5 49. Kg3 Ke4 50. h4 gxh4+ 51. Kxh4 Kf3 52. g5 Kf4 53. g6 Kf5 54. g7 Kf6 55. g8=Q Kf5 56. Qd5+ Kf4 57. f3 b5 58. Qe4# { 1-0 White wins. } 1-0