India are fighting back strongly in this test match however I think Australia is in a strong position on 255/6 as this pitch is very tough to bat on and as the pitch starts to dry out it will be even tougher to bat on. If Australia can get around 300+ runs then it will set them up nicely for the win as Australia's pace attack is a lot stronger then India.
You still believe Australia got better pace attack than India ? Just check how Australia suffered in the first test match of this series. As of now, Australia may score up to 350 runs in their first innings whereas I am expecting India to bat for second and third day and may score 600+ runs and then it would be easier for them to bowl out Australia with less than 200 runs to win this match by innings. All these depend on how India opener will start after Australia finish up their first innings.