June Challenge 2016
Chef and Coins Game, Devu and an Array
February Challenge 2017
Chef and His Apartment Dues
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
June Challenge 2017
Triplets, Xenny and Coin Rankings, Chef and the Feast, A Good Set
October Cook-Off 2017
Chef and Counting Test, Chef and Employment Test, Chef and Weird Queries
August Challenge 2018 Division 2
Sheokand and Number, Spell Bob
December Challenge 2018 Division 2
Chef and Interactive Contests, Chef and An Ideal Problem
August Challenge 2019 Division 2
Dilemma, Football, Distribute Apples, Zombie and the Caves
India