Chess Puzzle #OOfGa — Expert, Black to move, middlegame

Position

White: king h4; queen f5; pawns a4/b2/c3/d4/h5. Black: king h6; queen g7; pawns a5/b7/c6/d5/f6. Material is balanced. Black to move.

Solution (4 moves)

1. Opponent setup: b4 — pawn b2→b4. Now Black to move.
2. Best move: Qg5+ — queen g7→g5, gives check. Opponent replies Qxg5+ (queen f5→g5, captures queen, gives check).
3. Best move: fxg5+ — pawn f6→g5, captures queen, gives check. Opponent replies Kg4 (king h4→g4).
4. Best move: b6 — pawn b7→b6. Opponent replies Kf3 (king g4→f3).
5. Best move: Kxh5 — king h6→h5, captures pawn.

Tactical themes

crushing, endgame, queen endgame, quiet move, very long, zugzwang. The key move fxg5+ captures with check, forcing a response.

Position data

FEN: 8/1p4q1/2p2p1k/p2p1Q1P/P2P3K/2P5/1P6/8 w - - 0 40

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