August Long Challenge 2017
Chef and Mover, Palindromic Game, Chef and Rainbow Array
November Challenge 2017
Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle
February Challenge 2018
Chef And His Characters, Chef And The Patents
April Challenge 2018 Division 2
Weight of Numbers, Workers, Average of Pairs, Chef and Array (Challenge)
May Challenge 2018 Division 2
Minimum Deletions, Xor Again
August Challenge 2018 Division 2
Modular GCD, Problem Sort, Sheokand and Number, Spell Bob
September Challenge 2018 Division 2
Magician versus Chef, Chef and Adventures, War of XORs
December Challenge 2018 Division 2
Max and Electrical Panel, Chef and Interactive XOR, Chef and Interactive Contests, Chef and An Ideal Problem
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests, Chef and Happiness
October Challenge 2018 Division 2
Chef and Circles, Byte to Bit, Chef and Serves
January Challenge 2019 Division 2
Yet Another Problem About Sequences, Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes, A Pizza Slice
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Yet Again a Subarray Problem, Chef and a Beautiful Digit
India