Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Scheveningen_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be3 a6 7. Qd2 Qc7 8. h4
Nc6 9. h5 b5 10. Nxc6 Qxc6 11. f3 Bb7 12. g4 Rc8 13. Bd3 d5 14. exd5 Nxd5 15.
Nxd5 Qxd5 16. O-O-O Qxa2 17. Bxb5+ Bc6 18. Bxc6+ Rxc6 *
Position (FEN): 4kb1r/5ppp/p1r1p3/7P/6P1/4BP2/qPPQ4/2KR3R w k - 0 19
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 433
Best move: Qd7#