[pgn][Event "USA Championship 2022"]
[Site "Saint Louis"]
[Date "2022.10.05"]
[Round "1.4"]
[White "Yoo, Christopher Woojin"]
[Black "Niemann, Hans Moke"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2563"]
[BlackElo "2699"]
[Annotator "Tactical Analysis 5.3 (15s)"]
[PlyCount "108"]
[EventDate "2022.09.05"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Na6 5. e3 Be7 6. Nf3 {D00: 1 d4 d5: Unusual lines.} O-O 7. Be2 Nh5 $5 {Exploring less charted territory.} 8. Be5 {The position is equal.} f6 9. Bg3 c6 10. Nc3 c5 11. O-O Nxg3 (11... Bd7 {with more complications.} 12. e4 Nxg3 13. hxg3 dxe4 14. Nxe4 cxd4 15. Qxd4 Qc7) 12. hxg3 {[#]} c4 $146 {0.40/35} (12... cxd4 $11 {0.00/34} 13. Nxd4 Nc7) ({Predecessor:} 12... f5 13. Ne5 Nb8 14. f4 Nc6 15. Bb5 Nxe5 16. dxe5 a6 17. Be2 b5 18. Bf3 b4 {0-1 (41) Prydun,A (2223)-Oparin,G (2654) Chess.com INT 2021}) 13. e4 {0.00/35} (13. Qb1 $14 {0.40/35 should be considered.}) 13... Bb4 14. exd5 exd5 15. Nb1 Nc7 16. c3 Bd6 17. Nbd2 b5 18. Ne1 {-1.14/29} (18. a4 $11 {-0.10/29 remains equal.}) 18... Be6 {-0.39/32} (18... a5 $17 {-1.14/29 White must now prevent ...Be6.} 19. b3 Bd7) 19. Nc2 {-1.55/33} (19. a4 $15 {-0.39/32}) 19... Qd7 {-0.46/35} ({Black should try} 19... a5 $17 {-1.55/33 Strongly threatening ...f5.} 20. Nf3 b4) 20. Re1 a5 21. a3 {-1.57/28 Against b4} (21. b3 $1 $15 {-0.61/31}) 21... g6 {-0.87/32} (21... Qf7 $142 $1 {-1.57/28} 22. Nf3 Rae8) 22. Nf1 {-1.57/34} (22. Ne3 $142 {-0.87/32}) 22... h5 {Black is more active.} 23. Qd2 Kg7 24. f4 Rh8 25. Bf3 f5 {-1.03/34} ({Better is} 25... Raf8 $19 {-1.91/33} 26. Nce3 Qf7) 26. Re2 {-1.62/40} (26. Re5 $17 {-1.03/34}) 26... Ne8 $19 27. Rae1 Bf7 28. Re5 Nf6 (28... Bxe5 29. dxe5 Nc7 30. Nfe3 $17) 29. Nfe3 h4 {-0.95/30} ({Black should play} 29... Raf8 {-1.48/37} 30. Qf2 Rb8 31. Rxd5 Nxd5 32. Bxd5 Bxd5 33. Nxd5 Rhd8) 30. Qf2 $17 {[#]} h3 {0.00/46} ({Reject} 30... Bxe5 $6 31. dxe5 Nh5 32. Bxh5 hxg3 33. Qxg3 Rxh5 34. Nd4 $11) (30... Nh5 $1 $17 {-0.87/33} 31. gxh4 Nxf4 32. Nxf5+ gxf5 33. Qg3+ Ng6) 31. Re2 {-1.37/32} Rad8 32. Qe1 {-2.56/37} (32. Qf1 $17 {-1.50/30 might work better.}) 32... Ne4 33. g4 {[#]} Bxe5 $2 {-0.17/33} (33... hxg2 $1 $19 {-2.74/37} 34. Rxg2 Rh3 35. Bxe4 fxe4) 34. dxe5 $11 {Hoping for gxf5.} hxg2 35. Rxg2 {And now gxf5 would win.} Rh3 $1 36. e6 $2 {-7.26/26 White does not recover from this.} (36. Bxe4 $11 {-0.27/34} fxe4 37. Rh2 Rxh2 38. Kxh2) 36... Bxe6 $19 37. gxf5 Bxf5 ({And not} 37... Rxf3 38. Rxg6+ Kf8 39. Qh4 $11) 38. Nxf5+ Qxf5 39. Nd4 Qf6 40. Bxe4 Re8 {Pin, Zwischenzug} 41. f5 Rxe4 42. Qf2 Reh4 43. Rxg6+ {[#]} Qxg6+ $1 44. fxg6 Rh1+ 45. Kg2 R4h2+ 46. Kg3 Rxf2 47. Kxf2 {Endgame KR-KN} Rh2+ 48. Ke3 Rxb2 49. Kf4 Kxg6 50. Ke5 b4 51. axb4 axb4 52. cxb4 c3 53. b5 {[#]} Rxb5 $3 54. Nxb5 (54. Nc2 Rb2) 54... c2 {Weighted Error Value: White=0.84/Black=0.37} 0-1
[/pgn]
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