February 2013 Challenge
Climbing Stairs, Buy1-Get1
August Challenge 2013
Hello Hello, Splitting Candies, Little Elephant and Lemonade
October Challenge 2013
Helping Lira, Maxim and Dividers
January Challenge 2014
Bon Appetit, Please like me, Chef and Feedback
February Challenge 2014
Make Him Happy, Little Elephant and Subarrays, Longest Common Pattern
March Challenge 2014
Team Split, Binary Tournament, Walk, Little Chef and Numbers, Mike and Stamps
July Challenge 2014
Reach The Point, Count Substrings, Chef and Frogs
August Challenge 2014
Little Elephant and T-Shirts, Chef and Reversing, The Leaking Robot, Cleaning Tables, Chef and Gift
September Challenge 2014
Fun with Rotation, Chef and sequence, Chef and Left-Right, Chef and Swaps, Chef and Rainbow Array - 2
October Challenge 2014
Remy paints the fence, Chef and Ground, Chef and Square, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus
January Challenge 2015
Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries
Ukraine