Chess Puzzle #mmQ93 — Expert, Black to move, middlegame

Position

White: king g1; queen d1; rooks c1/f2; bishops b6/e2; knights c7/e1; pawns a5/b4/d5/e4/f3/h3. Black: king g8; queen g3; rooks a8/g7; bishop f8; knights f6/h4; pawns b7/d6/e5/f4/g2/h5. White is ahead by 3 points of material. Black to move.

Solution (2 moves)

1. Opponent setup: Bf1 — bishop e2→f1. Now Black to move.
2. Best move: Qh2+ — queen g3→h2, gives check. Opponent replies Kxh2 (king g1→h2, captures queen).
3. Best move: g1=Q# — pawn g2→g1, promotes to queen, delivers checkmate.

Tactical themes

advanced pawn, attraction, kingside attack, mate, mate in 2, middlegame, promotion, short. The combination ends with g1=Q# delivering checkmate.

Position data

FEN: r4bk1/1pN3r1/1B1p1n2/P2Pp2p/1P2Pp1n/5PqP/4BRp1/2RQN1K1 w - - 2 28

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