September Challenge 2014
Chef and Left-Right, Fun with Rotation
October Challenge 2014
Chef and Ground, Magical Girl and Colored Liquid Potions
November Challenge 2014
Distinct Characters Subsequence, Let us construct palindrome
February Challenge 2015
Chef and Chain, Chef and Strange Formula, Chef and Strings, Let us play with rank list, Chef and Equality
April Challenge 2015
Chef and Interview, Broken Telephone, Count Sequences
June Challenge 2015
Chef and Memory Limit, Chef and Polygons
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Gravity Guy, Devu And Churu , Cooking Machine, Aditi and Magic Trick
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
October Challenge 2015
Time measure, Rupsa and Equilateral Triangle, Spheres, Count Subarrays, Who dares to be a millionaire
August Cook-Off 2015
Chef and the XORed Number , Chef and the Wildcard Matching
September Mega Cook-Off 2015
Forgotten Language, Stacks
January Long Challenge 2016
Devu and Perfume, Rupsa and the Game
March Challenge 2016
Palindromic substrings, maximize the sum
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef and Coins Game, Devu and an Array
April Cook-Off 2016
Movie Weekend, Odd Divisors
India