March Challenge 2015
Devu and his Class, Sign Wave, Chef and Notebooks
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Way Out, Gravity Guy, Cooking Machine, Aditi and Magic Trick
October Challenge 2015
Who dares to be a millionaire, Rupsa and Equilateral Triangle, Spheres, Count Subarrays, Time measure
February Challenge 2016
Chef and Strange Operations, Devu and a light discussion, Chef-Detective
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Coloring
January Challenge 2019 Division 2
Lucky Number Game, Fancy Quotes
India