Chess Puzzle #OsFp0 — Advanced, White to move, middlegame

Position

White: king g1; queen h7; rooks e1/h6; knight f3; pawns a4/f2/g2/h2. Black: king g8; queens c1/c5; rooks a7/b8; knight d7; pawns b3/g7. Black is ahead by 7 points of material. White to move.

Solution (3 moves)

1. Opponent setup: Kf7 — king g8→f7. Now White to move.
2. Best move: Qg6+ — queen h7→g6, gives check. Opponent replies Kg8 (king f7→g8).
3. Best move: Qe6+ — queen g6→e6, gives check. Opponent replies Kf8 (king g8→f8).
4. Best move: Rh8# — rook h6→h8, delivers checkmate.

Tactical themes

long, mate, mate in 3, middlegame. The combination ends with Rh8# delivering checkmate.

Position data

FEN: 1r4k1/r2n2pQ/7R/2q5/P7/1p3N2/5PPP/2q1R1K1 b - - 1 31

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