[Event "XXXIII Pan-American Youth U14 Open"] [Site "https://lichess.org/study/NdPr3HIs/cQTNzNJU"] [Date "2023.08.15"] [Round "5.1"] [White "Tao, Sihan"] [Black "Wang, Isaac"] [Result "1-0"] [WhiteElo "2182"] [WhiteTeam "USA"] [BlackElo "2401"] [BlackTeam "USA"] [Annotator "Lang,JJ"] [Variant "Standard"] [ECO "B90"] [Opening "Sicilian Defense: Najdorf Variation"] [Source "https://lichess.org/study/NdPr3HIs/b5XZd1lw"] [Orientation "white"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3 h5 9. Nd5 Bxd5 10. exd5 Nbd7 11. Qd2 g6 12. O-O-O Bg7 13. Kb1 Qc7 14. c4 a5 { A characteristic moment in the English Attack against the Sicilian Najdorf: Black has delayed castling and White has played e4xd5, meaning that the center is relatively fixed. If White cannot create dynamics in the center, the king risks becoming exposed on the flank. } 15. c5! { Yes! This is a now-or-never move. } 15... dxc5!? (15... a4 { The alternative with allowing White to capture on d6 was interesting, but White still ends up rerouting the knight to c4 and pushing d5-d6, anyways. } 16. cxd6 Qxd6 17. Na5 O-O 18. Nc4 Qe7 19. d6 Qe6 20. Na3! $16) 16. Bb5 O-O 17. d6 Qb6 18. a4! Qa7 19. h3 b6 20. g4 Rac8 21. Bc4 Qa8 22. Rhf1 h4 (22... e4!? 23. g5 Ne8 24. Bf4 $16) 23. Qc2 Kh8 24. Qf2 b5 25. Bxb5 c4 26. Nc5 Rfd8 27. g5 Nd5 28. Nxd7 c3 29. Rc1 cxb2 30. Rxc8 Qxc8 31. Nb6? { As is often the case in the Najdorf, one imprecision can change the whole course of the game. } (31. Nf6! Nxf6 32. gxf6 Bxf6 33. Qc2 $18) 31... Qf5+! 32. Kxb2 (32. Qc2? Qxc2+ 33. Kxc2 Nxe3+ { explains why White was better provoking an exchange of knights. }) 32... Nxe3 33. Qxe3 Rxd6 34. Nc4 Rd4 35. Rf2 e4 36. Ka2 Qc5 37. Qe2 e3 38. Rg2?? Qb4?? { Black misses a knock-out blow with } (38... Rd2+! 39. Nxd2 (39. Qxd2 exd2 40. Rxd2 Qxg5! $19) 39... Qc2+ 40. Ka3 Qb2#) 39. Qc2! { White finds Black's missed resource and prevents it! } 39... Qe1 40. Re2 Qg3 { As the players reach time control, White is in control. } 41. Rxe3 Qxg5 42. Re8+ Kh7 43. Re4 Rd5 44. Rg4 Qf6 45. Nb2 Rf5 46. Qf2 Kg8 47. f4 g5? { This weakening move gives White the edge for good. } (47... Rc5! 48. Qe2 Rc3 $44) 48. Bd3 Rxf4 49. Rxf4 gxf4 50. Qc2 f3 51. Qc8+ Bf8 52. Qg4+ Kh8 53. Qh5+ Bh6 54. Qf5 Qxf5 55. Bxf5 $18 { It takes some time, but the result is never in doubt from here. } 55... Kg7 56. Nd3 Be3 57. Be4 f2 58. Bg2 Kf6 59. Kb3 Kf5 60. Kc2 f1=Q 61. Bxf1 Ke4 62. Bg2+ Kd4 63. Bc6 Bg5 64. Ne1 Ke3 65. Nf3 Bd8 66. Kc3 f5 67. Ne1 Kf2 68. Kd2 Bg5+ 69. Kd1 Kg3 70. Ke2 Kxh3 71. Kf3 Kh2 72. Bd7 f4 73. Ng2 Kg1 74. Nxf4 Kf1 75. Kg4 Be7 76. Ng6 Bd8 77. Bb5+ Kf2 78. Nxh4 Ke3 79. Nf3 Be7 80. Bc6 Kd3 81. Ne5+ Kd4 82. Nd7 Bd8 83. Kf5 Be7 84. Ke6 Bb4 85. Kf7 Bd6 86. Ke8 Kc4 87. Kd8 Kb4 88. Kc8 Be7 89. Bb5 Bd6 90. Kb7 Be7 91. Kc7 Bg5 92. Kb6 Bd8+ 93. Ka6 Bc7 94. Kb7 Bd8 95. Nb8 Kc5 96. Ka6 Kd6 97. Nc6 Bg5 98. Kxa5 Kc7 99. Ka6 Be3 100. Nb4 Kb8 101. Nd5 Bg1 102. Bc6 Bf2 103. Kb5 Bg1 104. Nb4 Bf2 105. Be4 Bg1 106. Nc6+ Kc7 107. a5 Bf2 108. a6 Bg1 109. Nb4 Kb8 110. Bb7 Kc7 111. Nd5+ Kb8 112. Kc6 Ba7 113. Kd7 Bc5 114. Ne7 Ka7 115. Nc6+ Kb6 116. Bc8 Kb5 117. Kc7 Kc4 118. Kb7 Kb5 119. Bh3 Kc4 120. Bf1+ Kd5 121. Na7 { 1-0 White wins. } 1-0