Chess puzzle (Checkmate)
Opening: Vienna_Game, Vienna_Game_Vienna_Gambit
Moves: 1. e4 e5 2. Nc3 Nf6 3. f4 exf4 4. e5 Qe7 5. Nf3 d6 6. d4 Nc6 7. Be2 dxe5 8.
dxe5 Nxe5 9. O-O Bf5 10. Re1 Qc5+ 11. Kh1 Nxf3 *
Position (FEN): r3kb1r/ppp2ppp/5n2/2q2b2/5p2/2N2n2/PPP1B1PP/R1BQR2K w kq - 0 12
White to move.
Themes: Double Check Opening Mate in 1 
Puzzle rating: 1600
Best move: Bb5#