March 2012 Challenge
Free Shuttle Service, Spoon in Matrix
April Challenge 2012
Fit to Play, Double Strings, Stacking Pancakes
June Challenge 2012
Little Elephant and Candies, Doom Bakes Cakes, Arranging Cup-cakes
October Challenge 2012
Little Elephant and Order, Fierce Battles, Event Organizer, The New Scheme
January Challenge 2013
The Minimum Number Of Moves, Three Different Numbers
February 2013 Challenge
Climbing Stairs, Buy1-Get1
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
July Challenge 2016
Chefland and Electricity, Chef and Robots Competition, Chef and Tetris, Andrash and Stipendium
August Challenge 2016
Chef and Circle Run, Chef and Chocolate, Chef and Round Run
September Challenge 2016
Chef and Friends, Dividing Machine, Chef and Matrix Division, Chef and digits of a number, Faded Palindromes, Chef and calculation
United States