Chess Puzzle #rSP9z — Advanced, Black to move, endgame

Position

White: king b7; bishop b4; pawns a7/c3/g5. Black: king b5; rook a1; pawns f7/g6/h4. Black is ahead by 2 points of material. Black to move.

Solution (3 moves)

1. Opponent setup: a8=Q — pawn a7→a8, promotes to queen. Now Black to move.
2. Best move: Rxa8 — rook a1→a8, captures queen. Opponent replies Kxa8 (king b7→a8, captures rook).
3. Best move: Kc6 — king b5→c6. Opponent replies Kb8 (king a8→b8).
4. Best move: h3 — pawn h4→h3.

Tactical themes

crushing, endgame, long. The key move Rxa8 wins material.

Position data

FEN: 8/PK3p2/6p1/1k4P1/1B5p/2P5/8/r7 w - - 1 52

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