A new look Bengal team, led by young gun Manoj Tiwari, piled up 169 runs in their stipulated overs.
The ask was tough for Asom and they faltered falling short by 35 runs short at 134.
Wriddhiman Saha gave Bengal the perfect start as he punished the Asom bowlers scoring 25 from 17 deliveries. India under 19 star Abu Nachim was picked up for special treatment and went for 33 runs from his four overs.
He and one-down Rohan Gavaskar amassed runs in boundaries before Saha fell prey to Pritam Das, the pick of the Asom bowlers, who maintained a neat line and length and scalped three Bengal wickets.
Gavaskar hit a massive six on his way to a 17-ball 26. Standing skipper Tiwari scored 36, studded with four boundaries.
Asom lost wickets at regular intervals as the Bengal bowlers maintained a steady line and length. But the high point of Bengal's game was their brilliant ground fielding. The young boys like Tiwari, Abhisekh Jhunjhunwala and Subhajit Paul were terrific and effected one brillaint run out and plucked out a few near impossible catches.
The target was always too stiff for the inexperienced Asom line-up and in the end they surrendered meekly, giving Bengal a huge psychological edge ahead of their encounter against Jharkhand tomorrow.
Bengal: 169 for 9 in 20 overs (M Tiwari 36, A Jhunjhunwala 32; P Das 3 for 27) Asom : 134 for 8 in 20 overs (S Bhagawati not out 26, P Mukherjee 26; SS Paul 2 for 28)