September Challenge 2016
Faded Palindromes, Chef and calculation, Chef and digits of a number
February Challenge 2017
Chef and His Apartment Dues
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
June Challenge 2017
Xenny and Coin Rankings, Pairwise union of sets, Triplets, A Good Set
July Challenge 2017
Chef and Sign Sequences, Whats in the Name, Calculator , IPC Trainers
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Chef and Cycled Cycles, A Balanced Contest, Counter Test For CHEFSUM, Chef and a great voluntary Program, Max Mex
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
October Cook-Off 2017
Chef and Counting Test, Chef and Employment Test, Chef and Weird Queries
March Challenge 2018 DIV 2
Chef and Easy Problem, Minion Chef and Bananas, Minions and Voting, Chef and Glove, Mix the Colors, A Big Sale
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again
August Challenge 2018 Division 2
Sheokand and Number, Spell Bob
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