Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Dragon_Variation
Moves: 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 Bg7 7. f3 O-O 8. Qd2
Nc6 9. Bc4 Bd7 10. O-O-O Rc8 11. Bb3 Nxd4 12. Bxd4 b5 13. h4 a5 14. a3 b4 15.
axb4 axb4 16. Nd5 Qa5 17. Nxe7+ Kh8 18. Nxc8 *
Position (FEN): 2N2r1k/3b1pbp/3p1np1/q7/1p1BP2P/1B3P2/1PPQ2P1/2KR3R b - - 0 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 585
Best move: Qa1#