April Challenge 2013
Maximum Weight Difference, Levy Conjecture, Barcelona Gameplay Tactics
April Cook-Off 2013
Andrew and the Meatballs again
May Challenge 2013
Name Reduction, Your Name is Mine
August Challenge 2013
Little Elephant and Lemonade, Save The Princess, Splitting Candies
October Challenge 2013
Helping Lira, Maxim and Dividers
November Challenge 2014
Chef and Segment Game, Distinct Characters Subsequence, Let us construct palindrome
January Challenge 2015
Sereja and Number Division 2, Chef and Stones, One Dimensional Kingdoms, Gcd Queries
April Challenge 2015
Chef and Interview, Broken Telephone
June Challenge 2016
Chef And Binary Operation, Devu and an Array
Hong Kong (SAR)