Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Old_Sicilian
Moves: 1. e4 c5 2. Nf3 Nc6 3. c3 e6 4. d4 d5 5. Bd3 Nf6 6. e5 Nd7 7. O-O Be7 8. Bf4
Qb6 9. b3 cxd4 10. cxd4 Nxd4 11. Be3 Nxf3+ 12. Qxf3 Qc7 13. Nd2 Qxe5 14. Bf4
Qf6 15. Rfe1 Bb4 16. Red1 O-O 17. Qh3 Qxf4 *
Position (FEN): r1b2rk1/pp1n1ppp/4p3/3p4/1b3q2/1P1B3Q/P2N1PPP/R2R2K1 w - - 0 18
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 517
Best move: Qxh7#