Chess Puzzle #4QpFd — Expert, White to move, middlegame

Position

White: king g1; queen f3; rook f1; bishop c3; knight f6; pawns a2/e3/g2/h2. Black: king g8; queen e2; rooks a8/f8; bishops c4/h6; pawns a7/c6/f7/g6/h7. Black is ahead by 6 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Kg7 — king g8→g7. Now White to move.
2. Best move: Ng4+ — knight f6→g4, gives check. Opponent replies f6 (pawn f7→f6).
3. Best move: Bxf6+ — bishop c3→f6, captures pawn, gives check. Opponent replies Rxf6 (rook f8→f6, captures bishop).
4. Best move: Qxf6+ — queen f3→f6, captures rook, gives check. Opponent replies Kg8 (king g7→g8).
5. Best move: Nxh6# — knight g4→h6, captures bishop, delivers checkmate.

Tactical themes

discovered attack, mate, mate in 4, middlegame, very long. The combination ends with Nxh6# delivering checkmate.

Position data

FEN: r4rk1/p4p1p/2p2Npb/8/2b5/2B1PQ2/P3q1PP/5RK1 b - - 3 21

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