Chess Puzzle #K2dlv — Expert, White to move, middlegame

Position

White: king h1; queen g5; rooks c1/e1; knight g6; pawns a4/g2/h3. Black: king g8; queen f2; rooks d2/f8; knight f4; pawns a7/b6/e6/g7/h5. Black is ahead by 2 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Nxh3 — knight f4→h3, captures pawn. Now White to move.
2. Best move: Ne7+ — knight g6→e7, gives check. Opponent replies Kf7 (king g8→f7).
3. Best move: Qg6+ — queen g5→g6, gives check. Opponent replies Kxe7 (king f7→e7, captures knight).
4. Best move: Qxe6+ — queen g6→e6, captures pawn, gives check. Opponent replies Kd8 (king e7→d8).
5. Best move: Rc8# — rook c1→c8, delivers checkmate.

Tactical themes

fork, mate, mate in 4, middlegame, sacrifice, very long. The combination ends with Rc8# delivering checkmate.

Position data

FEN: 5rk1/p5p1/1p2p1N1/6Qp/P4n2/7P/3r1qP1/2R1R2K b - - 3 29

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