Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Open
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nxd4 5. Qxd4 e6 6. b3 Nf6 7. Bb2 Be7 8.
Nd2 O-O 9. O-O-O b6 10. Nf3 h6 11. g4 d6 12. e5 Nxg4 13. Qxg4 d5 14. h4 Bb7 15.
Qh3 Rc8 16. Ng5 h5 17. Nf3 g6 18. Rg1 Qc7 19. Be2 *
Position (FEN): 2r2rk1/pbq1bp2/1p2p1p1/3pP2p/7P/1P3N1Q/PBP1BP2/2KR2R1 b - - 3 19
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 431
Best move: Qxc2#