A double century from Cheteshwar Pujara and three wickets late in the day put India in firm control after two days of the first test against England in Ahmedabad.
Pujara, who resumed the day on 98 not out, could not be dislodged by England's bowlers and struck 21 fours on his way to 206 not out as India declared on 521-8.
Graeme Swann was the best of the visitors' bowlers, finishing with 5 for 144.
England were left with 18 overs to bat and made a safe, if unspectacular, start negotiating the opening 13 overs.
However, when debutant Nick Compton was bowled by Ravichandran Ashwin for 9 it sparked a mini collapse.
Night-watchman Jimmy Anderson only lasted six deliveries and the man he was sent in to protect, Jonathan Trott, was dismissed for a duck to leave England struggling at 41 for 3 at stumps.
The not out batsmen are captain Alistair Cook (22) and Kevin Pietersen (6).
- Fairfax Media