April Challenge 2013
Barcelona Gameplay Tactics, Maximum Weight Difference, Levy Conjecture, Little Elephant and Music
May Challenge 2013
Name Reduction, Your Name is Mine
July Challenge 2013
Chef and Walking on the rectangle
August Challenge 2013
Hello Hello, Splitting Candies, Deleting numbers, Little Elephant and Lemonade
September Challenge 2013
Chef and Integers , CAO Stage-1, CAO Stage-2
February Challenge 2014
Longest Common Pattern, Little Elephant and Subarrays
September Challenge 2014
Factorisation, Fun with Rotation, Chef and Left-Right, Chef and Rainbow Array - 2
November Challenge 2015
Ingredients, Receipt Recovery, Chef and collection of stamps, Eugene and function, Simple Sum, Chef and cakes, Period on tree, Decompose the Tree
January Challenge 2018
Killing Monsters, K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
United States