Chess Puzzle #gfYhQ — Master, Black to move, endgame

Position

White: king c2; rook b6; pawn a3. Black: king f7; knight e2; pawns a5/b5. White is ahead by 1 point of material. Black to move.

Solution (7 moves)

1. Opponent setup: Rxb5 — rook b6→b5, captures pawn. Now Black to move.
2. Best move: Nd4+ — knight e2→d4, gives check. Opponent replies Kd3 (king c2→d3).
3. Best move: Nxb5 — knight d4→b5, captures rook. Opponent replies Kc4 (king d3→c4).
4. Best move: Nd6+ — knight b5→d6, gives check. Opponent replies Kd5 (king c4→d5).
5. Best move: Ke7 — king f7→e7. Opponent replies Kc5 (king d5→c5).
6. Best move: Ke6 — king e7→e6. Opponent replies a4 (pawn a3→a4).
7. Best move: Ke5 — king e6→e5. Opponent replies Kb6 (king c5→b6).
8. Best move: Nc4+ — knight d6→c4, gives check.

Tactical themes

crushing, endgame, exposed king, fork, very long. The key move is Nd4+.

Position data

FEN: 8/5k2/1R6/pp6/8/P7/2K1n3/8 w - - 14 55

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