Chess puzzle (Checkmate)
Opening: Scotch_Game, Scotch_Game_Classical_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Nge7 6. Nxc6 Nxc6 7. Bxc5 d6
8. Bd4 Qh4 9. Nc3 Be6 10. Bxg7 Rg8 11. g3 Qg5 12. Bd4 Kd8 13. Be3 Qg7 14. Bg2
Ne5 15. f4 Nc4 16. Bf2 Nxb2 17. Qb1 Qxc3+ 18. Ke2 *
Position (FEN): r2k2r1/ppp2p1p/3pb3/8/4PP2/2q3P1/PnP1KBBP/RQ5R b - - 1 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1212
Best move: Bc4#