English 1..e5 Karpov Variation

The Karpov Variation-1.c4 e5 2.g3 Nf6 3.Bg2 Nc6 4.Nf3 Bc5 

Good Knight vs Bishop; Centralization and Attack

13...h6

GM Karpov played for the center and then the attack in this classic game with the Karpov variation.

More on Gelfand

Here is the feature game.

Gelfand,Boris (2700) - Karpov,Anatoly (2765)
English 1..e5 Karpov Variation[A29]
Candidates FIDE f1 Sanghi Nagar (9), 1995

Position 1

Both kings are exposed but black has the move. What do you recommend for black?

Black to Play

34.Qxf6