Chess Puzzle #i5wbL — Expert, Black to move, endgame

Position

White: king e3; bishop f6; pawns c3/e4/f3/g3/h4. Black: king c6; knight b3; pawns a3/e5/h5. White is ahead by 2 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Bxe5 — bishop f6→e5, captures pawn. Now Black to move.
2. Best move: Na5 — knight b3→a5. Opponent replies Kd3 (king e3→d3).
3. Best move: Nc4 — knight a5→c4. Opponent replies Kxc4 (king d3→c4, captures knight).
4. Best move: a2 — pawn a3→a2. Opponent replies Kd3 (king c4→d3).
5. Best move: a1=Q — pawn a2→a1, promotes to queen.

Tactical themes

advanced pawn, advantage, endgame, promotion, quiet move, sacrifice, very long. The key move is Na5.

Position data

FEN: 8/8/2k2B2/4p2p/4P2P/pnP1KPP1/8/8 w - - 0 43

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