[Event "ch-USA Junior 2021"] [Site "Saint Louis USA"] [Date "2021.07.24"] [Round "8.4"] [White "Christopher Woojin Yoo"] [Black "Hans Moke Niemann"] [Result "1-0"] [WhiteElo "2479"] [BlackElo "2571"] [Variant "Standard"] [TimeControl "-"] [ECO "D90"] [Opening "Grünfeld Defense: Three Knights Variation"] [Termination "Unknown"] [Annotator "lichess.org"] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 { D90 Grünfeld Defense: Three Knights Variation } 5. h4 c6 6. cxd5 cxd5 7. Bf4 O-O 8. e3 Nc6 9. Be2 Bf5 10. Qb3 Qd7 11. Rd1 Na5 12. Qa3 Nc4 13. Bxc4 dxc4 14. Ne5 Qd8 15. Qb4 Nd5 16. Qxb7?! { (0.74 → -0.05) Inaccuracy. Nxd5 was best. } (16. Nxd5 Qxd5 17. f3 c3 18. bxc3 Qxa2 19. O-O f6 20. Ng4 Bxg4 21. fxg4 e5 22. Bg3 a5) 16... Nxf4 17. exf4 Rb8 18. Qxa7 Rxb2 19. O-O e6 20. g3 Qa8 21. Qxa8 Rxa8 22. Nxc4 Rc2 23. Rc1 Bxd4 24. Rxc2 Bxc2 25. Rc1 Bd3 26. Rd1 Bxf2+ 27. Kxf2 Bxc4 28. a4 Bb3 29. Ra1 Rc8 30. Ne4 Kg7 31. Ra3 Bd5 32. Nd2 Kf6 33. a5 Rc2 34. Ke3 Kf5 35. a6 Kg4 36. Ne4 Ba8 37. Kd4 Re2?! { (0.09 → 0.98) Inaccuracy. h6 was best. } (37... h6 38. a7 Kh3 39. h5 gxh5 40. Nf6 Rg2 41. Nxh5 Rd2+ 42. Kc4 Kg4 43. Nf6+ Kf5 44. Ng8) 38. Nf6+ Kf5 39. Ne8?! { (0.88 → 0.07) Inaccuracy. Nxh7 was best. } (39. Nxh7 f6 40. Kc5 e5 41. Kd6 exf4 42. gxf4 Kxf4 43. Nxf6 g5 44. hxg5 Kxg5 45. Nd7 Rd2+) 39... Rc2? { (0.07 → 1.23) Mistake. e5+ was best. } (39... e5+ 40. fxe5 Re4+ 41. Kd3 Rxe5 42. Nc7 Bg2 43. Ra4 Rc5 44. Rf4+ Ke5 45. Rxf7 Be4+ 46. Kd2) 40. Nd6+ Kf6 41. Nc4 h5?! { (1.12 → 2.31) Inaccuracy. Rc1 was best. } (41... Rc1 42. a7 Rd1+ 43. Kc5 h5 44. Kb6 Rc1 45. Ne5 Ke7 46. Rd3 Rb1+ 47. Kc5 Rc1+ 48. Nc4) 42. a7 Rg2? { (2.12 → 3.58) Mistake. Re2 was best. } (42... Re2 43. Ra5) 43. Nb6 Bb7 44. Rb3 Rd2+ 45. Ke3 Rd8 46. Nc4 Bh1 47. Rb8 Ke7? { (4.01 → 7.67) Mistake. Rd1 was best. } (47... Rd1 48. a8=R) 48. Rxd8 Kxd8 49. Nb6 Kc7 50. a8=Q Bxa8 51. Nxa8+ Kc6 52. Ke4 f6 53. Kd4 Kb7 54. Kc5 { White wins. } 1-0