June Challenge 2016
Chef And Binary Operation, Chef and Coins Game, Devu and an Array, Chef And The Hiring Event
September Challenge 2017
Little Chef and Sums, Fill The Matrix, Minimum Good Permutation, Chef and Pick Digit, Sereja and Commands
October Challenge 2017
Chef and Magic Arrays, Chef and a great voluntary Program, Chef and Cycled Cycles, Max Mex, Counter Test For CHEFSUM, A Balanced Contest, (Challenge) Connecting computers
November Challenge 2017
Chef and Intersection Line, Villages and Tribes, Periodic Palindrome Construction, Chef goes Left Right Left, Chef Hates Palindromes
September Cook-Off 2017
Statistics Construction, Subsequence Equality
October Cook-Off 2017
Chef and Counting Test, Chef and Employment Test, Chef and Weird Queries
September Lunchtime 2017
Chef and Dice, Chef and Cook-Off Contests
March Challenge 2018 DIV 1
Chef and Easy Problem, Mix the Colors, Minions and Voting
India