March Challenge 2016
maximize the sum, Palindromic substrings
May Challenge 2016
Chef and Balls, Chef and Big Soccer, Laddu
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
May Challenge 2017
Chef and his daily routine, Chef and Subsequences, Median of adjacent maximum numbers, Blocked websites, Courses in an university, Chef and Sub Array
November Challenge 2017
Chef goes Left Right Left, Villages and Tribes
June Challenge 2018 Division 2
Binary Shuffle, Naive Chef
August Challenge 2018 Division 2
Modular GCD, Spell Bob, Problem Sort, Sheokand and Number
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures
January Challenge 2019 Division 2
Chef and Modulo Game, A Pizza Slice, (Challenge) Chef and Matching Game, Fancy Quotes, Distinct Pairs, Lucky Number Game, Different Neighbours, Yet Another Problem About Sequences
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Art of Balance
India