Chess Puzzle #LAIEO — Advanced, Black to move, endgame

Position

White: king f2; pawns a4/d4/f3/g2/h3. Black: king e6; pawns a5/d5/f4/g5/h5. Material is balanced. Black to move.

Solution (4 moves)

1. Opponent setup: g3 — pawn g2→g3. Now Black to move.
2. Best move: fxg3+ — pawn f4→g3, captures pawn, gives check. Opponent replies Kxg3 (king f2→g3, captures pawn).
3. Best move: Kf5 — king e6→f5. Opponent replies Kh2 (king g3→h2).
4. Best move: Kf4 — king f5→f4. Opponent replies Kg2 (king h2→g2).
5. Best move: Ke3 — king f4→e3.

Tactical themes

crushing, endgame, pawn endgame, very long, zugzwang. The key move fxg3+ captures with check, forcing a response.

Position data

FEN: 8/8/4k3/p2p2pp/P2P1p2/5P1P/5KP1/8 w - - 0 47

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