April Challenge 2017
Similar Dishes, Dish Of Life
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Pairwise union of sets
July Challenge 2017
Chef and Sign Sequences, Whats in the Name, Calculator
October Challenge 2017
Counter Test For CHEFSUM, A Balanced Contest
December Challenge 2017
Penalty Shoot-out, Chef And his Cake
September Lunchtime 2017
Chef and Cook-Off Contests
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove, Minion Chef and Bananas
June Challenge 2018 Division 2
Sheokand and String, Binary Shuffle, Naive Chef
August Challenge 2018 Division 2
Problem Sort, Sheokand and Number, Spell Bob
India