Chess Puzzle #GN4tC — Intermediate, Black to move, endgame

Position

White: king d3; knight e5; pawns a3/d6/g4/h3. Black: king e8; knight b3; pawns a4/b4/g7/h7. Material is balanced. Black to move.

Solution (3 moves)

1. Opponent setup: axb4 — pawn a3→b4, captures pawn. Now Black to move.
2. Best move: a3 — pawn a4→a3. Opponent replies Kc2 (king d3→c2).
3. Best move: a2 — pawn a3→a2. Opponent replies Kxb3 (king c2→b3, captures knight).
4. Best move: a1=Q — pawn a2→a1, promotes to queen.

Tactical themes

advanced pawn, crushing, endgame, knight endgame, long, promotion. The key move is a3.

Position data

FEN: 4k3/6pp/3P4/4N3/pp4P1/Pn1K3P/8/8 w - - 0 35

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