Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Staunton-Cochrane_Variation
Moves: 1. e4 c5 2. c4 e6 3. Nc3 g6 4. d3 Bg7 5. Be2 h6 6. f4 Ne7 7. Nf3 d5 8. cxd5
exd5 9. e5 Nbc6 10. O-O O-O 11. h3 f5 12. exf6 Bxf6 13. Nh2 Nf5 14. Ng4 Bg7 15.
Bf3 Nce7 16. Re1 h5 17. Nh2 Bd4+ 18. Kh1 *
Position (FEN): r1bq1rk1/pp2n3/6p1/2pp1n1p/3b1P2/2NP1B1P/PP4PN/R1BQR2K b - - 3 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 724
Best move: Ng3#