Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Open
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Nc3 d6 7. Bd3 g6 8.
O-O Bg7 9. f4 Rb8 10. e5 dxe5 11. fxe5 Ng4 12. Qf3 O-O 13. Qxc6 Qd4+ 14. Kh1
Bb7 15. Qc4 Nf2+ 16. Kg1 Nh3+ 17. Kh1 Qg1+ 18. Rxg1 *
Position (FEN): 1r3rk1/pb2ppbp/6p1/4P3/2Q5/2NB3n/PPP3PP/R1B3RK b - - 0 18
Black to move.
Themes:  Middlegame Mate in 1, Smothered Mate 
Puzzle rating: 837
Best move: Nf2#