What is the best move for Black?

Casual Game, https://itsyourturn.com
rchambers vs. John Coffey

1 2 3 4 5 6 7 8 h g f e d c b a +1

(black to move) 1. Nf3 Nf6 2. d4 e6 3. Bg5 c5 4. Bxf6 Qxf6 5. c3 Nc6 6. dxc5 Bxc5 7. e3 d5 8. Be2 O-O 9. O-O Rd8 10. Nbd2 e5 11. Qa4 e4 12. Nd4 Bb6 13. Nxc6 bxc6 14. Nb3 Rd6 15. Nd4 Bd7 16. Qd1 Qg5 17. g3 Bh3 18. Re1 h5 19. Bxh5 c5 20. Nb5 Rf6 21. Be2 a6 22. Na3 Qf5 23. Rf1 d4 24. cxd4 cxd4 25. exd4 Bxf1 26. Qxf1 Bxd4 27. Nc4 Qc5

[ Flip the board | Reset | Options… ] Play chess online

 

Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight