Chess Puzzle #OMSgs — Expert, Black to move, endgame

Position

White: king d4; rook e6; pawns c5/d5/f3. Black: king f5; rook c7; pawns a5/f4/g4. Material is balanced. Black to move.

Solution (5 moves)

1. Opponent setup: d6 — pawn d5→d6. Now Black to move.
2. Best move: Kxe6 — king f5→e6, captures rook. Opponent replies dxc7 (pawn d6→c7, captures rook).
3. Best move: Kd7 — king e6→d7. Opponent replies fxg4 (pawn f3→g4, captures pawn).
4. Best move: a4 — pawn a5→a4. Opponent replies g5 (pawn g4→g5).
5. Best move: a3 — pawn a4→a3. Opponent replies c8=Q+ (pawn c7→c8, promotes to queen, gives check).
6. Best move: Kxc8 — king d7→c8, captures queen.

Tactical themes

crushing, endgame, quiet move, rook endgame, very long. The key move Kxe6 wins material.

Position data

FEN: 8/2r5/4R3/p1PP1k2/3K1pp1/5P2/8/8 w - - 0 44

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