Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Classical_Variation
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f3 e5 7. Nb3 a6 8. Be3
Be7 9. Nd5 Nxd5 10. Qxd5 Be6 11. Qd2 O-O 12. O-O-O Qc7 13. Qc3 Rfd8 14. Bc4
Bxc4 15. Qxc4 Rdc8 16. Rd5 b5 17. Qc3 Nb4 18. Qxb4 *
Position (FEN): r1r3k1/2q1bppp/p2p4/1p1Rp3/1Q2P3/1N2BP2/PPP3PP/2K4R b - - 0 18
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 436
Best move: Qxc2#