Chess Puzzle #Ri0V9 — Master, Black to move, endgame

Position

White: king b2; bishop e5; pawns d4/f2/h5. Black: king b4; knight d5; pawns a3/a7/g7. Material is balanced. Black to move.

Solution (3 moves)

1. Opponent setup: Ka2 — king b2→a2. Now Black to move.
2. Best move: Ka4 — king b4→a4. Opponent replies Bxg7 (bishop e5→g7, captures pawn).
3. Best move: Nb4+ — knight d5→b4, gives check. Opponent replies Kb1 (king a2→b1).
4. Best move: Kb3 — king a4→b3.

Tactical themes

crushing, defensive move, endgame, exposed king, long. The key move is Ka4.

Position data

FEN: 8/p5p1/8/3nB2P/1k1P4/p7/1K3P2/8 w - - 0 43

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