Chess puzzle (Checkmate)
Opening: Ruy_Lopez, Ruy_Lopez_Steinitz_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. h3 Bd7 5. d4 a6 6. Ba4 b5 7. Bb3 exd4 8. Nxd4
Na5 9. O-O Nxb3 10. axb3 c5 11. Nf5 Ne7 *
Position (FEN): r2qkb1r/3bnppp/p2p4/1pp2N2/4P3/1P5P/1PP2PP1/RNBQ1RK1 w kq - 2 12
White to move.
Themes:  Opening Mate in 1, Smothered Mate 
Puzzle rating: 1119
Best move: Nxd6#