August Challenge 2015
Aditi and Magic Trick, Cooking Machine
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
October Challenge 2015
Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle
September Mega Cook-Off 2015
Stacks, Forgotten Language
September Lunchtime 2015
Sum of palindromic numbers
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Devu and an Array, Chef and Coins Game, Chef And The Hiring Event, Chef And Binary Operation
July Challenge 2016
Andrash and Stipendium, Chefland and Electricity
August Challenge 2016
Chef and Chocolate, Chef and Round Run
September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
April Cook-Off 2016
Queries on a Binary Tree, Odd Divisors, Movie Weekend
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
June Lunchtime 2016
Collisions, One more weird game
March Challenge 2017
Cooking Schedule, Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix
India