August Challenge 2013
Hello Hello, Little Elephant and Lemonade, Splitting Candies
December Challenge 2013
Funny Marbles, Magic Pairs
May Challenge 2014
Compilers and Parsers, Chef-jumping, Stone
October Challenge 2014
Chef and Ground, Magical Girl and Colored Liquid Potions
November Challenge 2014
Distinct Characters Subsequence
December Challenge 2018 Division 2
Chef and Interactive Contests
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests
August Challenge 2019 Division 2
Dilemma, Football, Distribute Apples
