Chess Puzzle #6ogRt — Advanced, White to move, middlegame

Position

White: king c1; queen e7; rook e4; bishop f5; knight b3; pawns a2/b2/c3/f2/f4/g2/h2. Black: king g8; queen g7; rooks a8/h8; bishop c8; knight d7; pawns a7/b7/c6/f7/g4/h4. Black is ahead by 4 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Qf8 — queen g7→f8. Now White to move.
2. Best move: Qg5+ — queen e7→g5, gives check. Opponent replies Qg7 (queen f8→g7).
3. Best move: Re8+ — rook e4→e8, gives check. Opponent replies Nf8 (knight d7→f8).
4. Best move: Rxf8+ — rook e8→f8, captures knight, gives check. Opponent replies Kxf8 (king g8→f8, captures rook).
5. Best move: Qd8# — queen g5→d8, delivers checkmate.

Tactical themes

attraction, clearance, kingside attack, mate, mate in 4, middlegame, pin, sacrifice, very long. The combination ends with Qd8# delivering checkmate.

Position data

FEN: r1b3kr/pp1nQpq1/2p5/5B2/4RPpp/1NP5/PP3PPP/2K5 b - - 0 23

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