February 2013 Challenge
Buy1-Get1, Little Elephant and Cards, Efficient Painting, Climbing Stairs, Triangular Queries
June Challenge 2013
Little Elephant and Mouses, Collecting Magical Berries, Just Some Permutations 3, Dessert Wizard, Two k-Convex Polygons, Count Special Matrices, Predictopus, To challenge or not, W String, Lapindromes
June Cook-Off 2013
Attic Crossing, Lyra and the Alethiometer
July Challenge 2013
Count K-Primes, The Probability Of Winning, Chef and Walking on the rectangle
August Challenge 2013
Little Elephant and Lemonade, Hello Hello, Save The Princess, The Number Of Solutions, Splitting Candies
September Cook-Off 2013
Strange Matrix, Game, Code
October Challenge 2013
Helping Lira, Maxim and Dividers
August Challenge 2014
Chef and Reversing, The Leaking Robot, Chef and Gift
July Lunchtime 2014
And Operation, Shift The String
June Challenge 2015
Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons
Croatia