Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Delayed_Alapin
Moves: 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bd3 e6 5. Bc2 Be7 6. O-O O-O 7. h3 Nc6 8. d4
cxd4 9. Bd3 dxc3 10. Nxc3 a6 11. Re1 Nd7 12. Bb1 Nde5 13. a3 Nxf3+ 14. Qxf3 Ne5
15. Qe2 Bd7 16. f4 Nc6 17. Qd3 Qc7 18. e5 dxe5 *
Position (FEN): r4rk1/1pqbbppp/p1n1p3/4p3/5P2/P1NQ3P/1P4P1/RBB1R1K1 w - - 0 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 495
Best move: Qxh7#