Chess Puzzle #6w7OK — Advanced, White to move, middlegame

Position

White: king g3; queen e3; rooks a1/e4; bishop f6; pawns a2/d3/g4/h3. Black: king h7; queen c2; rooks a8/f8; bishop d5; knight b8; pawns a7/c6/f7/g6/h6. Black is ahead by 4 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Nd7 — knight b8→d7. Now White to move.
2. Best move: Qxh6+ — queen e3→h6, captures pawn, gives check. Opponent replies Kxh6 (king h7→h6, captures queen).
3. Best move: g5+ — pawn g4→g5, gives check. Opponent replies Kh7 (king h6→h7).
4. Best move: Rh4+ — rook e4→h4, gives check. Opponent replies Kg8 (king h7→g8).
5. Best move: Rh8# — rook h4→h8, delivers checkmate.

Tactical themes

attraction, mate, mate in 4, middlegame, sacrifice, very long. The combination ends with Rh8# delivering checkmate.

Position data

FEN: rn3r2/p4p1k/2p2Bpp/3b4/4R1P1/3PQ1KP/P1q5/R7 b - - 5 26

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