Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Delayed_Alapin
Moves: 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. e5 Nd5 5. d4 e6 6. Bc4 Nb6 7. Bb5+ Bd7 8. Bxd7+
N8xd7 9. exd6 cxd4 10. Nxd4 Nf6 11. Nb5 Nfd5 12. c4 Nxc4 13. Qa4 Ncb6 *
Position (FEN): r2qkb1r/pp3ppp/1n1Pp3/1N1n4/Q7/8/PP3PPP/RNB1K2R w KQkq - 2 14
White to move.
Themes: Double Check Opening Mate in 1 
Puzzle rating: 822
Best move: Nc7#