[Event "Casual correspondence game"] [Site "https://lichess.org/koefMvVo"] [Date "2024.05.09"] [White "lichess AI level 8"] [Black "NachiketR"] [Result "0-1"] [UTCDate "2024.05.09"] [UTCTime "08:44:49"] [WhiteElo "?"] [BlackElo "1500"] [Variant "From Position"] [TimeControl "-"] [ECO "?"] [Opening "?"] [Termination "Normal"] [FEN "3q1k1r/1p3pp1/3Pp1n1/1B1pPb1p/3N1P2/4B3/6PP/nr1Q1K1R w - - 4 20"] [SetUp "1"] [Annotator "lichess.org"] 20. Bc1?? { (0.15 → -4.22) Blunder. Qxb1 was best. } (20. Qxb1 Bxb1 21. Kf2 Nc2 22. Nxc2 Bxc2 23. Rc1 Kg8 24. Rxc2 Qh4+ 25. Kf1 Kh7) 20... Qa5 21. d7 Ke7 22. Nxf5+ exf5 23. Bd3 Rb6 24. Be3 Rc6 25. Kf2 Qa2+ 26. Qe2 Qxe2+ 27. Kxe2 Ra8 28. Rd1 Kxd7 29. Bxf5+ Ke7 30. Rxd5 Rd8 31. Rb5 b6 32. Rxb6 Rxb6 33. Bxb6 Rb8 34. Bc5+ Ke8 35. g3 Rb2+ 36. Ke3 Rxh2 37. Be4 h4 38. Bxg6 fxg6 39. gxh4 Rxh4 40. Kf3 Kf7 41. Kg3 Rh8 42. Kg4 Nb3 43. Bb6 Nc1 44. Kg5 Nd3 45. e6+ Kxe6 46. Bd4 Rg8 47. Be3 Ne1 48. Kxg6 Ng2 49. Bc1?! { (-3.87 → -5.40) Inaccuracy. f5+ was best. } (49. f5+ Ke5 50. Bd2 Nf4+ 51. Kg5 Nd5 52. Kg6 Rc8 53. Kxg7 Kxf5 54. Ba5 Ke6) 49... Nh4+ 50. Kh5 Ng2 51. Kg6 Rc8 52. f5+ Ke5 53. Bb2+ Kf4 54. f6 gxf6 55. Kxf6 Rc6+ 56. Ke7 Rb6 57. Bc3 Kf5 58. Kd7 Ne3 59. Ba5 Re6 60. Bc7 Kf6 61. Bg3 Nf5 62. Bc7 Nd4 63. Bf4 Rc6 64. Be3 Rc4 65. Bf2 Nb3 66. Kd6 Re4 67. Kd5 Kf5 68. Bb6 Na1 69. Bd4 Nc2 70. Bb6? { (-2.43 → -4.44) Mistake. Bg7 was best. } (70. Bg7 Rg4 71. Bc3 Ne3+ 72. Kd6 Nc4+ 73. Ke7 Re4+ 74. Kf7 Re3 75. Bd4 Ne5+) 70... Nb4+ 71. Kc5 Ke5 72. Bc7+ Ke6 73. Bd8?! { (-88.50 → Mate in 26) Checkmate is now unavoidable. Ba5 was best. } (73. Ba5 Nd3+ 74. Kc6 Ne5+ 75. Kb7 Kd7 76. Bd2 Kd6 77. Ba5 Rc4 78. Be1 Nd3) 73... Na6+ 74. Kb5 Nb8 75. Bc7?? { (-4.69 → Mate in 25) Checkmate is now unavoidable. Kb6 was best. } (75. Kb6 Nd7+ 76. Kb7 Rc4 77. Bc7 Rb4+ 78. Kc6 Nb8+ 79. Bxb8 Rxb8 80. Kc5 Rh8) 75... Nd7 76. Kc6?? { (-5.02 → Mate in 23) Checkmate is now unavoidable. Bd8 was best. } (76. Bd8 Kd6 77. Bg5 Re5+ 78. Kc4 Rxg5 79. Kd4 Nc5 80. Ke3 Ke5 81. Kd2 Rg3) 76... Rc4+ 77. Kb7 Nc5+ 78. Kb6 Kd5 79. Bg3 Nd7+?? { (Mate in 25 → -4.98) Lost forced checkmate sequence. Rc2 was best. } (79... Rc2 80. Be1 Rb2+ 81. Kc7 Ne4 82. Ba5 Nd6 83. Kd7 Rb7+ 84. Bc7 Nb5 85. Ke7) 80. Kb7 Rc6 81. Be1 Kc5?? { (Mate in 10 → -5.24) Lost forced checkmate sequence. Nc5+ was best. } (81... Nc5+ 82. Kb8 Re6 83. Bf2 Kc6 84. Bxc5 Re8+ 85. Ka7 Kxc5 86. Kb7 Re7+ 87. Kc8) 82. Bh4 Kb5 83. Bd8 Nc5+ 84. Kb8 Ka6 85. Bc7 Ne6 86. Bh2 Nc5 87. Bc7 Nd7+ 88. Kc8 Nb6+ 89. Kd8 Kb7 90. Bg3 Re6 91. Bf2 Kc6 92. Bxb6 Kxb6 93. Kd7 Re4 94. Kd6 Rc4 95. Kd5?? { (-5.05 → Mate in 15) Checkmate is now unavoidable. Ke5 was best. } (95. Ke5 Rc6) 95... Kb5 96. Kd6 Rc5 97. Kd7 Rc6 98. Kd8 Kb6 99. Kd7 Kb7 100. Ke7 Kc7 101. Kf8 Re6 102. Kg7 Kd7 103. Kf7 Rd6 104. Kg8 Rf6 105. Kh7 Ke7 106. Kg7 Re6 107. Kg8 Kf6 108. Kf8 Re5 109. Kg8 Re7 110. Kf8 Ke6 111. Kg8 Rf7 112. Kh8 Kf6 113. Kg8 Kg6 114. Kh8 Rf8# { Black wins by checkmate. } 0-1