Close: Eng 259-3 (Root 76*, Bairstow 72*) - need 119 more to win
Root & Bairstow reach 150 stand off 197 balls
Bairstow dropped on 14 by Vihari and on 39 by Pant
England need 378 runs to win and draw the series
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Today at the Test highlights on BBC Four & iPlayer at 19:00 BST
Phil Tufnell
Former England spinner on BBC Test Match Special
I would rather be India at the moment. The quick wickets after tea put them back in front but you can see how these two are really trying to seize that momentum back.
Target 378
A busy first over back from Mohammed Siraj.
He's a very talented bowler so England will have to respect him.
You'll think they'll want to target someone in this innings though. Could that be Shardul Thakur?
Phil Tufnell
Former England spinner on BBC Test Match Special
Is he a step too close? That absolutely raced to him.
Simon Mann
BBC Test Match Special
It went to him very quickly but at a catchable height. It's just gone straight through.
A big booming drive again from Jonny Bairstow, but there is a thick outside edge this time, and the ball flies through the hands of Hanuma Vihari at second slip.
That could be a big moment. It was through him before he even moved.
One for the younger audiences there, Tuffers.
Phil Tufnell
Former England spinner on BBC Test Match Special
That's like Adam and the Ants. Stand and deliver.
Target 378
Hmmm. India are making a change. Mohammed Shami is off and Mohammed Siraj is on. I'm surprised by that because Shami was causing some issues and he only bowled a three-over spell.
Siraj is greeted by a booming Jonny Bairstow for four. Shot, lad.
Simon Mann
BBC Test Match Special
It came off the edge of the bat. He got a bit lucky but a definite change of approach from Root.
Will India change the field now?
Phil Tufnell
Former England spinner on BBC Test Match Special
It looks like Root is going to take Jadeja on now.
Target 378
Joe Root.
It looks like a change of tactics against Ravindra Jadeja as he gets down on one knee and paddle sweeps fine for four.
He does it again, and there's a top edge this time, and it spins away, almost behind slip and away for four more.
A productive over for England.
Phil Tufnell
Former England spinner on BBC Test Match Special
Shami is getting the ball to reverse now.
Target 378
England seem happy to just rotate the strike and get some overs into the legs of the Indian bowlers. It's a bit of light relief from the crash, bang, wallop that we've seen all summer.
We can play until 18:30 BST tonight by the way. There are 23 overs left, so we might actually be done before then with Ravindra Jadeja bowling.
Here are the three wickets to fall since the ball got changed...
Phil Tufnell
Former England spinner on BBC Test Match Special
It's got to stop, it's ruining the game.
It takes out the fundamental skill of batting where a batsman sees off the new ball and then is able to reap the rewards from the older one.
Something has got to be done about it. It completely changes the flow of the game.
Andy Zaltzman
BBC Test Match Special statistician
Since India got a new ball at 106-0, there have been just 32 runs scored and three wickets.
Target 378
Ravindra Jadeja races through a maiden.
England need another 240. It's looking like it's going to take a fair amount of day five to win this game, which is good news for anyone who grabs a freebie.
Simon Mann
BBC Test Match Special
They'd have reviewed that if they hadn't wasted two already.
Target 378
Another massive - and I mean massive - appeal for lbw against Joe Root as Mohammed Shami cannons another one into the pads.
Richard Kettleborough again shakes his head and says no.
India have a conflab but decide against the review this time, and wisely because the ball was missing leg stump by an inch or so.
They are creating opportunities.
Andy Zaltzman
BBC Test Match Special statistician
There have been six lbw reviews against Joe Root by opposition captains this summer and they have all been unsuccessful.