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, Cooking Machine, Aditi and Magic Trick
December Challenge 2015
Chef and the stones, Oracle Devu and Longest Common Subsequence
May Cook-Off 2015
Devu and friendship testing
August Cook-Off 2015
Chef and the Wildcard Matching, Chef and the XORed Number
July Lunchtime 2015
Greedy puppy, Puppy and game
January Long Challenge 2016
Rupsa and the Game, Churu and Balls, Chef and Time Machine, Devu and Perfume
February Challenge 2016
Chef and Strange Operations, Devu and a light discussion, Chef-Detective
March Challenge 2016
Palindromic substrings, maximize the sum
June Challenge 2016
Chef And The Hiring Event, Chef and Rectangle Array, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
July Challenge 2016
Andrash and Stipendium, Chef and Segments, Chef and Tetris, Chef and Robots Competition, Chefland and Electricity
September Challenge 2016
Chef and digits of a number, Chef and calculation, Faded Palindromes
May Challenge 2017
Chef and Sub Array , Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences
India