Gobinda Poddar`s unbeaten century powered Orissa to an eight-wicket victory over Sikkim on the second day of their three-day under-19 Cooch Behar Trophy cricket match at Dhanbad in Jharkhand today. Brief scores: Sikkim 243 and 149 (Rahul 40: Anil Buda 7/54) lost to Orissa 190 and 208 for 2 (Gobinda Podar 101 n.o, Lagnajit Samal 54 n.o).