Chess Puzzle #YFZLs — Expert, White to move, endgame

Position

White: king b5; bishop c3; pawns a3/f4. Black: king d3; knight c2. White is ahead by 2 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Kxc3 — king d3→c3, captures bishop. Now White to move.
2. Best move: a4 — pawn a3→a4. Opponent replies Nd4+ (knight c2→d4, gives check).
3. Best move: Kb6 — king b5→b6. Opponent replies Nb3 (knight d4→b3).
4. Best move: f5 — pawn f4→f5. Opponent replies Kc4 (king c3→c4).
5. Best move: f6 — pawn f5→f6.

Tactical themes

crushing, defensive move, endgame, knight endgame, quiet move, very long. The key move is a4.

Position data

FEN: 8/8/8/1K6/5P2/P1Bk4/2n5/8 b - - 0 66

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