Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Marshall_Gambit
Moves: 1. e4 e6 2. d4 d5 3. Nc3 c5 4. Be3 cxd4 5. Qxd4 Nc6 6. Qa4 d4 7. O-O-O e5 8.
Bb5 Bd7 9. Bxd4 exd4 10. Nd5 Qg5+ 11. Kb1 Bd6 12. g3 a6 13. Bd3 Ne5 14. Qb3
Nxd3 15. Qxd3 Bc6 16. f4 Qd8 17. Qxd4 Ne7 18. Qxg7 Rg8 *
Position (FEN): r2qk1r1/1p2npQp/p1bb4/3N4/4PP2/6P1/PPP4P/1K1R2NR w q - 1 19
White to move.
Themes:  Opening Mate in 1 
Puzzle rating: 1093
Best move: Nf6#