Chess Puzzle #aaSOk — Master, White to move, middlegame

Position

White: king b1; queen d2; rooks f5/g5; knight b2; pawns c4/d3/e4/h4. Black: king g7; queen f6; rooks b3/f8; knight b6; pawns b4/c5/d6/g6/h5. Black is ahead by 1 point of material. White to move.

Solution (4 moves)

1. Opponent setup: Qd4 — queen f6→d4. Now White to move.
2. Best move: Rxg6+ — rook g5→g6, captures pawn, gives check. Opponent replies Kxg6 (king g7→g6, captures rook).
3. Best move: Qg2+ — queen d2→g2, gives check. Opponent replies Kh6 (king g6→h6).
4. Best move: Rxh5+ — rook f5→h5, captures pawn, gives check. Opponent replies Kxh5 (king h6→h5, captures rook).
5. Best move: Qg5# — queen g2→g5, delivers checkmate.

Tactical themes

attraction, mate, mate in 4, middlegame, sacrifice, very long. The combination ends with Qg5# delivering checkmate.

Position data

FEN: 5r2/6k1/1n1p1qp1/2p2RRp/1pP1P2P/1r1P4/1N1Q4/1K6 b - - 0 31

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