September Challenge 2016
Faded Palindromes, Chef and digits of a number
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates
January Challenge 2018
K-Concatenation, Rectangle, Maximum Score
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again
June Challenge 2018 Division 2
Binary Shuffle, Naive Chef
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests, Chef and Happiness
India