Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd1 Qb6 5. Nc3 Nf6 6. Bd3 Ng4 7. Nf3 *
Position (FEN): r1b1kb1r/pp1ppppp/1qn5/8/4P1n1/2NB1N2/PPP2PPP/R1BQK2R b KQkq - 8 7
Black to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 747
Best move: Qxf2#