What is the strongest line for Black?

Casual Game, https://itsyourturn.com
Analysis of Madrigal vs. John Coffey

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

(black to move) 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 Be7 7. Nc3 O-O 8. O-O c6 9. e4 d5 10. Ne5 dxc4 11. Nxc4 Qxd4 12. Ne3 Rd8 13. Bc1 Qxd1 14. Nexd1 Na6 15. a3 Nc5 16. Bg5 h6 17. Bf4 Ba6 18. Re1 Nd3 19. Re3 Bc5 20. Rf3 Ne1

[ 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

Click here for 18. e5.