Chess puzzle (Checkmate)
Opening: Vienna_Game, Vienna_Game_Vienna_Gambit
Moves: 1. e4 e5 2. Nc3 Nf6 3. f4 exf4 4. e5 Qe7 5. Qe2 Ng8 6. Nf3 Nc6 7. d4 d6 8. Bxf4
Bg4 9. Nd5 Bxf3 10. gxf3 Qd8 11. Qd2 Nge7 12. Bg5 h6 13. Bh4 g5 *
Position (FEN): r2qkb1r/ppp1np2/2np3p/3NP1p1/3P3B/5P2/PPPQ3P/R3KB1R w KQkq - 0 14
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 879
Best move: Nf6#