Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Dragon_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bg5 Bg7 7. Qd2 O-O 8.
O-O-O Nc6 9. Nxc6 bxc6 10. h4 h5 11. Bh6 Qa5 12. Bxg7 Kxg7 13. f3 Be6 14. Kb1
Rab8 15. g4 hxg4 16. fxg4 Nxe4 17. Nxe4 Qxa2+ 18. Kc1 *
Position (FEN): 1r3r2/p3ppk1/2ppb1p1/8/4N1PP/8/qPPQ4/2KR1B1R b - - 1 18
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 612
Best move: Qxb2#