August Long Challenge 2017
Chef and Mover, Greedy Candidates, Chef and Rainbow Array
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, 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
September Lunchtime 2017
Chef and Cook-Off Contests
January Challenge 2018
K-Concatenation, Partition the numbers, Rectangle, Maximum Score
February Challenge 2018
Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome
January Challenge 2019 Division 2
Lucky Number Game, Fancy Quotes
India