Chess Puzzle #75Ko2 — Expert, White to move, middlegame

Position

White: king h1; queen h6; rooks f6/g5; pawns c2/c3/e4/g2/h3. Black: king g8; queen e7; rooks a8/f8; knights d7/e5; pawns a7/b7/f7. Black is ahead by 4 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Ng6 — knight e5→g6. Now White to move.
2. Best move: Rfxg6+ — rook f6→g6, captures knight, gives check. Opponent replies fxg6 (pawn f7→g6, captures rook).
3. Best move: Qxg6+ — queen h6→g6, captures pawn, gives check. Opponent replies Kh8 (king g8→h8).
4. Best move: Rh5+ — rook g5→h5, gives check. Opponent replies Qh7 (queen e7→h7).
5. Best move: Rxh7# — rook h5→h7, captures queen, delivers checkmate.

Tactical themes

mate, mate in 4, middlegame, very long. The combination ends with Rxh7# delivering checkmate.

Position data

FEN: r4rk1/pp1nqp2/5R1Q/4n1R1/4P3/2P4P/2P3P1/7K b - - 4 31

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