Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Accelerated_Dragon
Moves: 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Be3 Bg7 6. Nc3 Nf6 7. Bc4 O-O 8.
O-O a6 9. h3 Nxd4 10. Bxd4 b5 11. Bb3 b4 12. e5 Ne8 13. Nd5 a5 14. a4 bxa3 15.
Rxa3 e6 16. Bb6 Qg5 17. Bc5 Bb7 18. Nb6 *
Position (FEN): r3nrk1/1b1p1pbp/1N2p1p1/p1B1P1q1/8/RB5P/1PP2PP1/3Q1RK1 b - - 5 18
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 420
Best move: Qxg2#