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

Position

White: king h2; rook a7; pawn g4. Black: king b5; knight a4; pawns b6/c6/d5/e5. Black is ahead by 1 point of material. Black to move.

Solution (5 moves)

1. Opponent setup: Rxa4 — rook a7→a4, captures knight. Now Black to move.
2. Best move: Kxa4 — king b5→a4, captures rook. Opponent replies g5 (pawn g4→g5).
3. Best move: d4 — pawn d5→d4. Opponent replies g6 (pawn g5→g6).
4. Best move: d3 — pawn d4→d3. Opponent replies g7 (pawn g6→g7).
5. Best move: d2 — pawn d3→d2. Opponent replies g8=Q (pawn g7→g8, promotes to queen).
6. Best move: d1=Q — pawn d2→d1, promotes to queen.

Tactical themes

advanced pawn, crushing, endgame, hanging piece, promotion, quiet move, very long. The key move Kxa4 wins material.

Position data

FEN: 8/R7/1pp5/1k1pp3/n5P1/8/7K/8 w - - 0 45

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