[Event "EOC-ch-Final 2021"] [White "Kramer,Julian"] [Black "Skripchenko,Almira"] [Site "Online"] [Round "6.16"] [Annotator "Karsten Mueller"] [Result "1-0"] [Date "2021.03.30"] [WhiteElo "2419"] [BlackElo "2418"] [PlyCount "46"] [Setup "1"] [FEN "7B/8/4k3/2K1p1p1/4Pb1p/5P1P/8/8 b - - 0 61"] {The bishop prison Same colored bishop endings have a large drawish tendency:} 61... Bd2 $2 {This opens the prison door.} (61... Bg3 62. Bg7 (62. Kc6 Bf4 63. Kc7 Ke7 $11 )Kf7 63. Bh6 Bf4 {keeps the bishop locked up as} 64. Kd5 { can be met by} g4 65. fxg4 Bxh6 66. Kxe5 Kg6 $11 )62. Kc6 $2 ({The bishop must break free directly with} 62. Bg7 $1 $18 {and White wins as shown below.} )Ba5 63. Bg7 Bd8 $2 {Now the bishop breaks free for good.} (63... Bb4 { closes the prison door, e.g.} 64. Kc7 Ba3 65. Kd8 Bb4 66. Ke8 Bc5 67. Bf8 Bxf8 68. Kxf8 Kf6 $11 )64. Bf8 Ba5 65. Bc5 Bd8 (65... Bd2 66. Kc7 Ba5+ 67. Kc8 Bd2 68. Kd8 $18 )66. Bb4 Bf6 67. Kc7 Bh8 (67... g4 {is refuted by} 68. fxg4 Bg5 69. Bc5 Bf6 70. Be3 Ke7 71. g5 Bg7 72. Bc5+ Ke6 73. Kd8 $18 )68. Kd8 Bf6+ 69. Ke8 Bg7 70. Be7 {White starts the final winning phase.} ({Of course not} 70. Bf8 $4 Bxf8 71. Kxf8 Kf6 $11 {and White's king is locked up for ever on the 8th rank.} )Bh6 (70... Bf6 {is refuted by} 71. Bxf6 Kxf6 72. Kd7 g4 73. fxg4 Kg5 74. Ke6 Kf4 75. g5 Kxg5 76. Kxe5 $18 )71. Bd8 {Zugzwang is the sharpest endgame weapon.} Bg7 72. Bxg5 Bf6 73. Be3 {The bishop must remain on the board for the time being.} (73. Bxf6 $2 {is refuted by} Kxf6 74. Kd7 Kg5 75. Ke6 Kf4 76. Kf6 Kxf3 77. Kxe5 Kg3 78. Kd4 Kxh3 79. e5 Kg2 80. e6 h3 81. e7 h2 82. e8=Q h1=Q $11 )Be7 74. Bf2 Bg5 75. Kf8 Kf6 ({After} 75... Bf6 76. Be3 Bh8 { White's king invades from behind:} 77. Kg8 Bf6 78. Kh7 Kf7 79. Kh6 $18 )76. Be1 {Now Black must allow White's king to come closer due to zugzwang.} Kg6 77. Ke8 Bf6 78. Kd7 Kf7 (78... Kg5 79. Ke6 Bg7 80. Bd2+ Kg6 81. Bc3 $18 )79. Kd6 Kg6 80. Ke6 Kg5 81. Bd2+ Kg6 82. Be1 ({The direct} 82. Bc3 Kg5 83. Bxe5 {wins as well.} )Kg7 83. Kf5 Kf7 84. Bc3 1-0