Debasish Das of Niali (Cuttack) and Asutosh Mohapatra of Bhubaneswar emerged champions in the senior and junior categories of the S R All-Orissa Open Chess tournament, which concluded at Infosys, Chandrasekharpur, Bhubaneswar today. School boy Debasish beat Dasarathi Sahu in the ninth and last round to top the table with eight points. He received the top prize of Rs 8,000. Runner-up Bibhuti Bhusan Das finished with seven points to take home the second prize of Rs 5,000. In the junior category, local boy Asutosh continued his winning run to finish with full nine points. Akankshya Kabi ended runners-up with seven points.