Chess Puzzle #EwzqM — Expert, White to move, endgame

Position

White: king f3; pawns a2/f6/g6. Black: king c2; bishop f8; pawns a3/b4. Black is ahead by 2 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Kb2 — king c2→b2. Now White to move.
2. Best move: g7 — pawn g6→g7. Opponent replies Bxg7 (bishop f8→g7, captures pawn).
3. Best move: fxg7 — pawn f6→g7, captures bishop. Opponent replies b3 (pawn b4→b3).
4. Best move: axb3 — pawn a2→b3, captures pawn. Opponent replies a2 (pawn a3→a2).
5. Best move: g8=Q — pawn g7→g8, promotes to queen.

Tactical themes

advanced pawn, bishop endgame, crushing, endgame, promotion, very long. The key move is g7.

Position data

FEN: 5b2/8/5PP1/8/1p6/p4K2/P1k5/8 b - - 0 49

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