August Challenge 2015
Cooking Machine, Aditi and Magic Trick, Gravity Guy
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
October Challenge 2015
Count Subarrays, Who dares to be a millionaire
December Challenge 2015
Oracle Devu and Longest Common Subsequence, Plane Division, Chef and the stones
August Cook-Off 2015
Chef and the XORed Number , Chef and the Wildcard Matching
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
India