Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Other_variations
Moves: 1. e4 c5 2. e5 Nc6 3. Nf3 Qc7 4. Bc4 Nxe5 5. Nxe5 Qxe5+ 6. Be2 Nf6 7. O-O d5 8.
c3 e6 9. Re1 Qc7 10. d4 Bd6 11. dxc5 Qxc5 12. Be3 Qc7 13. g3 O-O 14. Qd3 Bd7
15. Bd1 Bc6 16. Bg5 Ne4 17. Be3 a6 18. Bc2 Rad8 19. f3 Nc5 *
Position (FEN): 3r1rk1/1pq2ppp/p1bbp3/2np4/8/2PQBPP1/PPB4P/RN2R1K1 w - - 1 20
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 456
Best move: Qxh7#