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

Position

White: king g2; rook e4; pawns a5/f2/g3/h2. Black: king g7; rook b8; pawns b3/d6/f7/h7. Material is balanced. Black to move.

Solution (3 moves)

1. Opponent setup: a6 — pawn a5→a6. Now Black to move.
2. Best move: b2 — pawn b3→b2. Opponent replies a7 (pawn a6→a7).
3. Best move: b1=Q — pawn b2→b1, promotes to queen. Opponent replies axb8=Q (pawn a7→b8, captures rook, promotes to queen).
4. Best move: Qxb8 — queen b1→b8, captures queen.

Tactical themes

advanced pawn, crushing, endgame, long, promotion, rook endgame. The key move is b2.

Position data

FEN: 1r6/5pkp/3p4/P7/4R3/1p4P1/5PKP/8 w - - 0 32

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