January 2011 Challenge
Count Relations, Flu Shot Lineup
July Challenge 2013
Across the River, Galactik Football, The Probability Of Winning, Chef and Walking on the rectangle , Count K-Primes, Sereja and Sorting, Circle of death
July Cook-off 2013
Chopsticks, A Plus B Again!
August Challenge 2013
Splitting Candies, Sereja and Ballons, Chef and Segments, Save The Princess, Hello Hello, Little Elephant and Lemonade, The Number Of Solutions
September Challenge 2013
Little Elephant and Exams, Cool Guys, Chef and Integers , Project Spoon, CAO Stage-1, CAO Stage-2
October Challenge 2013
Helping Lira, Kamehameha, Yet Another Nice Girl, CAO Stage-3, Sereja and Transformation, Maxim and Dividers, Little Elephant and Bamboo
July Challenge 2014
Garden Game, Chef and Frogs, Count Substrings, Reach The Point, Dish Owner
