Tripura had scored 260 in their first innings but the hosts overhauled the total, amassing 436 for eight declared to take a lead of 176 runs yesterday.
Tripura, who were at an overnight score of 21 for no loss in their second innings yesterday, lost two quick wickets at the team score of 50.
But opener Subhrajit Roy kept the scoreboaring ticking with an 83-run fourth wicket partnership with Ajay Ratra to steady the innings.
He was the top-scorer with a 249-ball 81 which was laced with nine hits to the fence. Wicket-keeper batsman Ajay was unbeaten at 41 and Abhijit Dey was on 9 when the stumps were drawn for the last time today.
Brief Score:
Tripura: 260 & 170/4 in 88.0 overs (S Roy 81; DP Vijaykumar 2/23)
Andhra: 436/8d.