Chess puzzle (Checkmate)
Opening: Italian_Game, Italian_Game_Schilling-Kostic_Gambit
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nd4 4. Nxd4 exd4 5. c3 dxc3 6. Nxc3 Qf6 7. Nd5 Qd8
8. d4 c6 9. Bg5 f6 10. Nxf6+ gxf6 11. Qh5+ Ke7 12. Qf7+ Kd6 *
Position (FEN): r1bq1bnr/pp1p1Q1p/2pk1p2/6B1/2BPP3/8/PP3PPP/R3K2R w KQ - 4 13
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1581
Best move: Bf4#