October Challenge 2013
Maxim and Dividers, Helping Lira
November Challenge 2013
Superpowers of 2, Yet Another Cute Girl, Uncle Johny, Square Digit Squares, Missing some chairs
December Challenge 2013
Chef and Codes, Funny Marbles, Magic Pairs
January Challenge 2014
Please like me, Chef and Feedback
April Challenge 2014
Farmer Feb, Shortest Path in Binary Trees, Chef and Digits, Counting Matrices
September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
June Challenge 2017
Chef and Prime Queries, A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
India