Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Najdorf_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 e6 7. Nf3 Be7 8. Bd3
O-O 9. O-O Nc6 10. h3 Bd7 11. Nh2 Ne5 12. Be2 Rc8 13. Bd2 Bc6 14. f4 Nc4 15.
Bxc4 Bxe4 16. Nxe4 Nxe4 17. Bd3 Qb6+ 18. Kh1 *
Position (FEN): 2r2rk1/1p2bppp/pq1pp3/8/P3nP2/3B3P/1PPB2PN/R2Q1R1K b - - 3 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1411
Best move: Ng3#