Chess Puzzle #CcMrb — Advanced, Black to move, middlegame

Position

White: king e3; bishop a6; pawns a3/c3/d4/e5/g5/h6. Black: king e7; bishop f1; pawns a4/b5/d5/e6/g6/h7. Material is balanced. Black to move.

Solution (3 moves)

1. Opponent setup: Kf2 — king e3→f2. Now Black to move.
2. Best move: b4 — pawn b5→b4. Opponent replies Bxf1 (bishop a6→f1, captures bishop).
3. Best move: bxa3 — pawn b4→a3, captures pawn. Opponent replies Bd3 (bishop f1→d3).
4. Best move: a2 — pawn a3→a2.

Tactical themes

advanced pawn, bishop endgame, crushing, endgame, long, sacrifice. The key move is b4.

Position data

FEN: 8/4k2p/B3p1pP/1p1pP1P1/p2P4/P1P1K3/8/5b2 w - - 6 59

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