Chess Puzzle #d1lg5 — Advanced, White to move, endgame

Position

White: king g3; knight c5; pawns a6/b5. Black: king g5; bishop c8; pawns a7/e5/f6/h3. Black is ahead by 2 points of material. White to move.

Solution (4 moves)

1. Opponent setup: f5 — pawn f6→f5. Now White to move.
2. Best move: b6 — pawn b5→b6. Opponent replies f4+ (pawn f5→f4, gives check).
3. Best move: Kh2 — king g3→h2. Opponent replies axb6 (pawn a7→b6, captures pawn).
4. Best move: a7 — pawn a6→a7. Opponent replies bxc5 (pawn b6→c5, captures knight).
5. Best move: a8=Q — pawn a7→a8, promotes to queen.

Tactical themes

advanced pawn, advantage, defensive move, endgame, master, promotion, very long. The key move is b6.

Position data

FEN: 2b5/p7/P4p2/1PN1p1k1/8/6Kp/8/8 b - - 0 45

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