[Event "The bakery (blog diagram workshop): Breaker - just K (when B is not enough)"] [Site "https://lichess.org/study/l6bOrnM0"] [Result "*"] [Annotator "https://lichess.org/@/Illion"] [Variant "Atomic"] [ECO "?"] [Opening "?"] [FEN "1k6/p3K3/8/1P6/8/8/8/5B2 w - - 0 1"] [SetUp "1"] [UTCDate "2017.10.13"] [UTCTime "19:40:22"] [Source "https://lichess.org/study/iS3Dp19A/7SQPWGGJ"] [Orientation "white"] { In this example, black's king is again trapped in the corner. At first glance it looks like it can run away with ...Kc7-Kd6, but it's an illusion. Black's king therefore cannot step onto b7 or c7 (or else white plays b6) - it's trapped on the back rank. I say that the threat of b6 "mines" the 8 squares around it. More on mining: lichess.org/forum/team-illions-atomic-blog/mined-squares-seeing-the-real-dangers } 1. Bh3 { Defends c8, and in conjunction with the mined squares, we see that black's king is trapped on a8 and b8. } { [%csl Gc8,Ra7,Rb7,Rc7][%cal Gh3c8,Rb5b6] } 1... Ka8 2. Kd7 { Now the white king marches towards the corner to put black into zugzwang. } (2. Bc8 { It seems like the white bishop can also force zugzwang, but there's a catch. } 2... Kb8 3. Bb7? { This only draws now. The bishop gets in the pawn's way. } 3... Kc7! 4. b6+ Kd6 { Here's the problem - white can't play b7, and white can't prevent ...axb6 next turn drawing. Please be aware of this detail. } 5. Be4 axb6 $10) 2... Kb8 3. Kc8 { Always careful to prevent ...Kc8-d8. } 3... Ka8 4. Kb8 $22 { Zugzwang. Black either advances the pawn and gives white a passed pawn, or plays ...Kb7 and allows b6 followed by b7. } 4... Kb7 5. b6 Kc6 6. b7 $18 *