[Event "FIDE Chesscom Grand Swiss 2021"] [White "Esipenko,Andrey"] [Black "Zhou,Jianchao"] [Site "Riga"] [Round "4.23"] [Annotator "TA"] [Result "1-0"] [Date "2021.10.30"] [WhiteElo "2720"] [BlackElo "2629"] [PlyCount "167"] 1. e4 {} c5 2. Nf3 d6 3. Bb5+ Nc6 4. 0-0 Bd7 5. Re1 Nf6 6. c3 a6 7. Bf1 Bg4 8. h3 Bxf3 9. Qxf3 e6 {is more profitable than 9...g6 at the moment. B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} 10. d3 Be7 11. Nd2 0-0 {White has an edge.} 12. Qe2 b5 13. g3 {[#]} b4 $146 ({Predecessor:} 13... Rb8 14. Bg2 Qc7 15. a3 a5 16. a4 b4 17. Nc4 Nd7 18. Be3 Nce5 19. Nxe5 dxe5 { 1/2-1/2 (30) Bok,B (2607)-Harika,D (2497) Wijk aan Zee 2018} )14. Nf3 bxc3 15. bxc3 d5 16. e5 Nd7 17. Bf4 Nb6 18. a4 c4 19. d4 Nd7 20. Qd2 Na5 21. Qe3 Rb8 22. Ra2 Rb3 23. Be2 Qb6 24. Nd2 Rb2 25. Rea1 Rb8 26. Bd1 Qd8 {White must now prevent ...g5.} 27. h4 R8b7 28. Bc2 Qb8 29. Qe1 $1 Nc6 30. Rxb2 Rxb2 31. Qc1 Rb7 32. Nf3 a5 (32... Na5 $11 {keeps the balance.} )33. Kg2 $16 Nb4 34. cxb4 axb4 35. Qb1 Nf8 36. Bd2 b3 37. Bd1 Ra7 38. Qb2 Bb4 39. Bc3 Qb6 40. Nd2 { } Qa5 41. Nb1 Nd7 42. Bxb3 Bxc3 43. Nxc3 { Hoping for Bd1.} Qb4 { Pin} 44. Rb1 {aiming for Bd1.} cxb3 45. Qxb3 Qxd4 {[#]} 46. Qb8+ $1 {} Nf8 {[#]} 47. Kg1 Ra6 $11 48. Qc8 (48. Qb7 {feels hotter.} Ra7 49. Qc8 h5 50. Rb8 Kh7 51. Nb5 )Qc4 (48... Rb6 $1 $11 {remains equal.} 49. Rb5 Rxb5 50. axb5 h5 )49. Qxc4 $16 dxc4 { Endgame KRN-KRN} 50. Rb4 Rc6 51. Rb8 f6 52. Ra8 Rb6 53. exf6 gxf6 54. Rc8 Kf7 55. Rxc4 Nd7 56. Rc7 Ke8 57. Kg2 Ra6 58. Rc4 f5 59. Kf1 Kd8 60. Ke2 Ne5 61. Rc5 Nd7 62. Rb5 Kc7 63. Kd3 Rd6+ 64. Kc2 Kc6 (64... Rc6 $16 65. f4 Nc5 )65. Na2 $18 Nf6 {[#]} (65... Kc7 {was called for.} 66. a5 Rc6+ 67. Kd3 Rd6+ 68. Ke3 Kc6 )66. Nb4+ $1 Kc7 67. a5 {} Ne4 68. f3 Nxg3 $2 (68... Rd2+ {was necessary.} 69. Kb3 Nd6 70. Rc5+ Kd7 )69. a6 {Threatens to win with a7.} Rd8 70. Rb7+ Kd6 71. Rxh7 e5 72. a7 Ra8 73. Kd2 f4 $2 (73... Kc5 74. Nd3+ Kd6 75. Rh6+ Kd5 )74. Kd3 Kc5 75. Rb7 Rd8+ 76. Kc3 Ra8 77. Nd3+ Kc6 $2 (77... Kd6 78. Rf7 e4 79. fxe4 (79. Nxf4 exf3 80. Nh3 Ne4+ 81. Kd4 f2 $16 )Nxe4+ 80. Kd4 Ke6 )78. Rh7 e4 79. fxe4 Nxe4+ 80. Kd4 Nd6 81. Nb4+ Kb5 82. Nd5 { Nc7+ is the strong threat.} Kc6 (82... Ka5 $18 83. Kc5 Ne4+ 84. Kc6 Nd2 )83. Rc7+ Kb5 84. Rc5+ {Weighted Error Value: White=0.09/Black=0.15} 1-0