With ideas like 8...Bf3, winning the battle for the d-file. By now the range of the bishop pair is rather worrying for White, whereas the knights are lacking protected squares. Black later won.
Intending ...b5-b4 to weaken the a1-h8 diagonal for the bishop, in particular the d4-square.
Now the bishop is doing a great job in helping his colleague to put pressure on g2.
Giving up the bishop pair in exchange for another advantage: a weak enemy pawn on d6.
Black "messes up" the game before White manages to consolidate, with a long-term advantage thanks to the bishop pair.