Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Marshall_Gambit
Moves: 1. d4 d5 2. e4 e6 3. Nc3 c5 4. dxc5 Bxc5 5. Bd2 dxe4 6. Nxe4 Qd4 7. Nc3 *
Position (FEN): rnb1k1nr/pp3ppp/4p3/2b5/3q4/2N5/PPPB1PPP/R2QKBNR b KQkq - 2 7
Black to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 833
Best move: Qxf2#