Chess Puzzle #Uc79J — Expert, Black to move, endgame

Position

White: king c4; rook g6; pawns b4/d4/g2/h2. Black: king b6; rook a1; pawns a4/c6/h4. White is ahead by 1 point of material. Black to move.

Solution (4 moves)

1. Opponent setup: d5 — pawn d4→d5. Now Black to move.
2. Best move: Rc1+ — rook a1→c1, gives check. Opponent replies Kd3 (king c4→d3).
3. Best move: a3 — pawn a4→a3. Opponent replies Kd2 (king d3→d2).
4. Best move: a2 — pawn a3→a2. Opponent replies Kxc1 (king d2→c1, captures rook).
5. Best move: a1=Q+ — pawn a2→a1, promotes to queen, gives check.

Tactical themes

advanced pawn, crushing, endgame, promotion, rook endgame, very long. The key move is Rc1+.

Position data

FEN: 8/8/1kp3R1/8/pPKP3p/8/6PP/r7 w - - 2 47

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