What is the best move for Black?

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

1 2 3 4 5 6 7 8 h g f e d c b a 0

(black to move) 1. e4 e6 2. d4 d5 3. e5 c5 4. Na3 cxd4 5. Qxd4 Ne7 6. Nf3 Nbc6 7. Qa4 Bd7 8. Qf4 Ng6 9. Qe3 Qb8 10. Ng5 Qxe5 11. Nb5 Rc8 12. Nxa7 Nxa7

[ 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