Chess Puzzle #fUQfp — Advanced, White to move, middlegame

Position

White: king c1; queen d2; rooks d1/e1; bishop f3; knight f6; pawns a2/b2/c2/e7/f2/g3/h2. Black: king e8; queen c5; rooks c8/h8; bishop g7; knights d7/e6; pawns a7/b7/f7/g6/h6. Black is ahead by 1 point of material. White to move.

Solution (2 moves)

1. Opponent setup: Nxf6 — knight d7→f6, captures knight. Now White to move.
2. Best move: Qd8+ — queen d2→d8, gives check. Opponent replies Nxd8 (knight e6→d8, captures queen).
3. Best move: exd8=Q# — pawn e7→d8, captures knight, promotes to queen, delivers checkmate.

Tactical themes

advanced pawn, double check, master, mate, mate in 2, middlegame, promotion, short. The combination ends with exd8=Q# delivering checkmate.

Position data

FEN: 2r1k2r/pp1nPpb1/4nNpp/2q5/8/5BP1/PPPQ1P1P/2KRR3 b k - 4 17

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