Pogonina vs Chess.com Move 16. ...
Natalia Pogonina (http://www.chess.com/votechess/game.html?id=14051) will probably play 16.Nxd5 since exd5 will guard black's main weak spot d6 and free black's king side. It also leaves Nc3 no good choices.
My guess is that there will be a strong tendency among many voters to go for 16. ... Bxd5. I believe that is not the best move. The most natural is 17.Qxd5 and white will, even if the Queens are exchanged, have a lasting grip on the centre and the weak pawn d6.
So, the black queen must move and the dark squared bishop needs a guard. The only move to do that is Qd8. 16. ...Qd8 is therefore my suggestion.
Now, one can go further and analyze longer. But for move 16. ... I believe it is not necessary.