February Challenge 2017
Chef and His Apartment Dues
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
October Challenge 2017
Max Mex, (Challenge) Connecting computers, A Balanced Contest, Counter Test For CHEFSUM, Chef and Cycled Cycles, Chef and a great voluntary Program, Chef and Magic Arrays
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Chef and Hamming Distance of arrays, Penalty Shoot-out, Chef And his Cake, Total Diamonds, Chef And Easy Xor Queries
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
January Cook-Off 2018
Multiple of 3, Survive in ChocoLand
February Challenge 2018
Chef And The Patents, Permutation and Palindrome, Car-pal Tunnel, Akanksha and End of Semester, Chef And His Characters, Broken Clock
March Challenge 2018 DIV 1
Chef and Easy Problem, Mix the Colors, Minions and Voting
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Chef and String, Chef and Price Control
India