September Challenge 2017
Minimum Good Permutation, Chef and Pick Digit, Little Chef and Sums
October Challenge 2017
Max Mex, A Balanced Contest
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Chef and Universe, Total Diamonds, Chef And his Cake, Penalty Shoot-out, Chef and Hamming Distance of arrays
November Cook-Off 2017
Online Chess, Random Pair
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
January Lunchtime 2018
Chef and Game with Sequence
February Challenge 2018
Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome
February Cook-Off 2019 Division 1
Max Range Queries, Chef and Secret Password, Chef and Party
