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

Position

White: king f2; rook h1; pawns f3/h3. Black: king h6; knight c5; pawns a3/g6/h5. White is ahead by 1 point of material. Black to move.

Solution (3 moves)

1. Opponent setup: h4 — pawn h3→h4. Now Black to move.
2. Best move: Nb3 — knight c5→b3. Opponent replies Rb1 (rook h1→b1).
3. Best move: a2 — pawn a3→a2. Opponent replies Rxb3 (rook b1→b3, captures knight).
4. Best move: a1=Q — pawn a2→a1, promotes to queen.

Tactical themes

advanced pawn, crushing, endgame, long, promotion, quiet move. The key move is Nb3.

Position data

FEN: 8/8/6pk/2n4p/8/p4P1P/5K2/7R w - - 0 56

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