Chess puzzle (Checkmate)
Opening: Philidor_Defense, Philidor_Defense_Exchange_Variation
Moves: 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 c5 5. Nf3 h6 6. Nc3 Be7 7. Bc4 a6 8. Qd5
Nf6 9. Qxf7+ Kd7 10. Bf4 g5 11. Ne5+ Kc7 12. Qxf6 Bxf6 *
Position (FEN): rnbq3r/1pk5/p2p1b1p/2p1N1p1/2B1PB2/2N5/PPP2PPP/R3K2R w KQ - 0 13
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1477
Best move: Nd5#