Chess Puzzle #5b7SN — Advanced, Black to move, endgame

Position

White: king d4; rook e4; pawns f2/f3. Black: king a4; rook b4; pawns a5/f4. Material is balanced. Black to move.

Solution (6 moves)

1. Opponent setup: Ke5 — king d4→e5. Now Black to move.
2. Best move: Kb3 — king a4→b3. Opponent replies Kxf4 (king e5→f4, captures pawn).
3. Best move: a4 — pawn a5→a4. Opponent replies Kf5 (king f4→f5).
4. Best move: Rxe4 — rook b4→e4, captures rook. Opponent replies fxe4 (pawn f3→e4, captures rook).
5. Best move: a3 — pawn a4→a3. Opponent replies e5 (pawn e4→e5).
6. Best move: a2 — pawn a3→a2. Opponent replies e6 (pawn e5→e6).
7. Best move: a1=Q — pawn a2→a1, promotes to queen.

Tactical themes

advanced pawn, crushing, endgame, promotion, quiet move, rook endgame, very long. The key move is Kb3.

Position data

FEN: 8/8/8/p7/kr1KRp2/5P2/5P2/8 w - - 2 65

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