Replying to Bengal's first innings total of 240, the visitors were in a spot of bother at 51/3 before Manhas (79 batting, 252 m, 175 b, 17x4) and Dahiya stemmed the rot to take their team to 184/3 when play was called off due to bad light at the Eden Gardens.
With seven wickets in hand, Delhi are now 56 runs behind the Bengal first innnings total and the morning session of play would be crucial tomorrow in determining the course of the game.
Resuming at the overnight score of 229/7, the Bengal innings folded up in half an hour, with Amit Bhandari picking up all the three remaining wickets to finish with figures of 5/55.
Bhandari claimed Ritam Kundu (20), S S Paul (0) and Ranadeb Bose (0) while Subhomoy Das, who came back to the middle today after having retired following a back problem yesterday, remained not out on 50.
Delhi began on a disastrous note losing their opener Aakash Chopra (3) and Shikhar Dhawan (1) cheaply with Bengal seamers S S Paul and Ranadeb Bose exploiting the pace-friendly conditions.
Gautam Gambhir (29) tried to salvage the situation in the company of Manhas, before getting out shortly before lunch.
Brief score : Bengal Ist innings 240 all out Delhi first innings 184/3 (Manhas batting 79, Dahiya batting 68).