September Challenge 2016
Chef and Friends, Chef and digits of a number, Faded Palindromes, Chef and calculation
August Long Challenge 2017
Greedy Candidates, Palindromic Game, Chef and Mover, Chef and Rainbow Array
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Max Mex, Counter Test For CHEFSUM, A Balanced Contest
November Challenge 2017
Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
India