Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Closed
Moves: 1. e4 c5 2. Nc3 a6 3. f4 e6 4. a4 d5 5. d3 Ne7 6. Nf3 h6 7. Be2 d4 8. Nb1 Nd7
9. Nbd2 b6 10. Nc4 Bb7 *
Position (FEN): r2qkb1r/1b1nnpp1/pp2p2p/2p5/P1NpPP2/3P1N2/1PP1B1PP/R1BQK2R w KQkq - 2 11
White to move.
Themes:  Opening Mate in 1, Smothered Mate 
Puzzle rating: 1000
Best move: Nd6#