[Event "The bakery (blog diagram workshop): Solution 2"] [Site "https://lichess.org/study/l6bOrnM0"] [Result "*"] [Annotator "https://lichess.org/@/Illion"] [Variant "Atomic"] [ECO "?"] [Opening "?"] [FEN "6kK/4p1p1/6P1/7B/3P4/8/8/8 w - - 0 1"] [SetUp "1"] [UTCDate "2017.10.20"] [UTCTime "19:54:43"] [Source "https://lichess.org/study/iS3Dp19A/hL4PEqyd"] [Orientation "white"] { White to play and win. Black's king is clearly trapped in the corner, but so is white's, so forcing zugzwang will be a challenge. First things first, black's threatening to escape with ...Kh7-h6 so white needs to seal that off. } 1. Kh7! Kf8 2. d5 Ke8 3. Bg4 { Covering c8 and sealing black's king into the back rank. The bishop alone cannot force zugzwang if black oscillates between d8 and e8, though, so white's king needs to help. First he needs to get out of the corner, though. } 3... Kd8! (3... Kf8? { The bishop quickly wins. } 4. Bd7 Kg8 5. Be8 Kf8 6. Bc6 Kg8 7. Bd7 Kh8 8. Be8 Kg8 9. Bf7 Kf8 10. Kg8 $22) 4. Kg8! { White needs this timing to leave the corner. If black's king were on e8 instead, black could play ...Kf7-f6, escaping. } 4... Ke8 5. Kf7 Kf8 6. Ke6 Kf7 7. Kf6! { The key move, preventing black's king from escaping. Now white's king is free while black's remains trapped. } 7... Ke8+ (7... Ke6 8. d6 $18) 8. Ke5 Kd8 9. Kd4 { The next step is for the white king to occupy c8, then d8, bodying black's king back into the corner. } 9... Ke8 10. Kc5 Kd8 11. Kb6 Ke8 12. Kc7 Kd8 13. Kc8 Ke8 14. Kd8 Kf8 15. Be6 Ke8 16. Bf7 Kf8 (16... Kd7 17. d6) 17. Ke8 $22 { Zugzwang, and white wins simply hereafter. } *