Chess Puzzle #0nmaJ — Intermediate, White to move, middlegame

Position

White: king h2; queen f7; pawns e3/f4/g5/h3. Black: king h6; queen h8; pawns a2/d5/e6/g6/h7. Black is ahead by 1 point of material. White to move.

Solution (4 moves)

1. Opponent setup: Kh5 — king h6→h5. Now White to move.
2. Best move: Qxe6 — queen f7→e6, captures pawn. Opponent replies Qb2+ (queen h8→b2, gives check).
3. Best move: Kg3 — king h2→g3. Opponent replies Qe2 (queen b2→e2).
4. Best move: Qg4+ — queen e6→g4, gives check. Opponent replies Qxg4+ (queen e2→g4, captures queen, gives check).
5. Best move: hxg4# — pawn h3→g4, captures queen, delivers checkmate.

Tactical themes

endgame, master, mate, mate in 4, queen endgame, very long. The combination ends with hxg4# delivering checkmate.

Position data

FEN: 7q/5Q1p/4p1pk/3p2P1/5P2/4P2P/p6K/8 b - - 0 54

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