Chess puzzle (Checkmate)
Opening: Scotch_Game, Scotch_Game_Other_variations
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 Nf6 6. e5 Ng8 7. Bc4 Ne7 8.
Nc3 b6 9. Bg5 Bb7 10. Nd5 h6 11. Bh4 g5 *
Position (FEN): r2qkb1r/pbppnp2/1p5p/3NP1p1/2BQ3B/8/PPP2PPP/R3K2R w KQkq - 0 12
White to move.
Themes:  Middlegame Mate in 1, Smothered Mate 
Puzzle rating: 1079
Best move: Nf6#