Chess Puzzle #fS7y1 — Advanced, Black to move, endgame

Position

White: king h1; rook e4; pawn h2. Black: king b7; pawns a3/b5/c7. White is ahead by 3 points of material. Black to move.

Solution (3 moves)

1. Opponent setup: Rb4 — rook e4→b4. Now Black to move.
2. Best move: a2 — pawn a3→a2. Opponent replies Rxb5+ (rook b4→b5, captures pawn, gives check).
3. Best move: Ka6 — king b7→a6. Opponent replies Rg5 (rook b5→g5).
4. Best move: a1=Q+ — pawn a2→a1, promotes to queen, gives check.

Tactical themes

advanced pawn, crushing, defensive move, endgame, long, promotion, rook endgame. The key move is a2.

Position data

FEN: 8/1kp5/8/1p6/4R3/p7/7P/7K w - - 0 37

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