Chess puzzle (Checkmate)
Opening: Vienna_Game, Vienna_Game_Stanley_Variation
Moves: 1. e4 e5 2. Nc3 Nc6 3. Bc4 Bc5 4. Qg4 Qf6 5. Nd5 Qxf2+ 6. Kd1 Na5 7. Nxc7+ Kf8
8. Bd5 *
Position (FEN): r1b2knr/ppNp1ppp/8/n1bBp3/4P1Q1/8/PPPP1qPP/R1BK2NR b - - 2 8
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1304
Best move: Qf1#