Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Nyezhmetdinov-Rossolimo_Attack
Moves: 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. c3 a6 5. Bxc6 bxc6 6. d4 cxd4 7. cxd4 Nf6 8.
e5 Nd5 9. Nc3 Nxc3 10. bxc3 d6 11. O-O dxe5 12. Nxe5 Bb7 13. Bf4 Qd5 14. Rb1
Ra7 15. Qb3 Qe4 16. Bg3 Be7 17. Qb6 c5 18. Qxa7 *
Position (FEN): 4k2r/Qb2bppp/p3p3/2p1N3/3Pq3/2P3B1/P4PPP/1R3RK1 b k - 0 18
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 678
Best move: Qxg2#