October Challenge 2015
Spheres, Who dares to be a millionaire, Rupsa and Equilateral Triangle
November Challenge 2015
Eugene and function, Chef and cakes
April Challenge 2016
Chef And Coloring, Chef And Magical Path, Chef and Ballons, Help Watson Escape
June Challenge 2016
Chef And Binary Operation, Chef and Coins Game, Devu and an Array
October Challenge 2016
Chef and Keyboard, Chef and Three Dogs
April Cook-Off 2016
Movie Weekend, Odd Divisors
October Cook-Off 2016
Watson asks Does Permutation Exist, ChefWatson uses Social Network
March Challenge 2017
Bandwidth of a matrix, Bear and Extra Number, Xenny and Alternating Tasks
September Challenge 2017
Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Max Mex, A Balanced Contest
India