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

Position

White: king d1; queen g6; bishops d5/h6; pawns c2/f2. Black: king f8; queen c3; rook c8; bishop h8; knight e5; pawns a5/b5/d6. Black is ahead by 6 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Ke7 — king f8→e7. Now White to move.
2. Best move: Bg5+ — bishop h6→g5, gives check. Opponent replies Kd7 (king e7→d7).
3. Best move: Qh7+ — queen g6→h7, gives check. Opponent replies Bg7 (bishop h8→g7).
4. Best move: Qxg7+ — queen h7→g7, captures bishop, gives check. Opponent replies Nf7 (knight e5→f7).
5. Best move: Qxf7# — queen g7→f7, captures knight, delivers checkmate.

Tactical themes

mate, mate in 4, middlegame, very long. The combination ends with Qxf7# delivering checkmate.

Position data

FEN: 2r2k1b/8/3p2QB/pp1Bn3/8/2q5/2P2P2/3K4 b - - 1 33

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