Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Four_Knights_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. a3 d6 7. Be2 Be7 8. O-O
O-O 9. Be3 Qc7 10. f4 Nxd4 11. Bxd4 a6 12. Kh1 b5 13. Qe1 Bb7 14. Qg3 Rad8 15.
Rae1 Bc6 16. Bd3 Qd7 17. Rf3 Nh5 18. Qg4 Nxf4 *
Position (FEN): 3r1rk1/3qbppp/p1bpp3/1p6/3BPnQ1/P1NB1R2/1PP3PP/4R2K w - - 0 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 848
Best move: Qxg7#