February Challenge 2015
Chef and Chain, Let us play with rank list, Chef and Equality
August Challenge 2015
Way Out, Cooking Machine, Aditi and Magic Trick
December Challenge 2015
Oracle Devu and Longest Common Subsequence
August Cook-Off 2015
Chef and the Wildcard Matching
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation
October Challenge 2017
Max Mex, A Balanced Contest
March Challenge 2018 DIV 2
Chef and Glove, Minion Chef and Bananas
India