October Challenge 2014
Chef and Ground, Magical Girl and Colored Liquid Potions
November Challenge 2014
Chef and Segment Game, Distinct Characters Subsequence, Chef and Red Black Tree, 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
March Challenge 2015
Chef and Notebooks, Devu and his Class
April Challenge 2015
Chef and Piano Scales, Chef and Interview, Broken Telephone
May Challenge 2015
Devu and binary String, Chef and Prime Divisors, Set Difference , Chef and new recipe
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
March Challenge 2016
Palindromic substrings, maximize the sum, Chef And Special Dishes
August Challenge 2016
Chef and Chocolate, Chef and Round Run
India