October 2010 Challenge
Count palindromes, Logging Game
September Cook-off
Digit Rotation, Hotel Bytelandia
November Cook-Off
Moving Coins, Subanagrams
December 2011 Long Contest
Birthday Gift, Robot Movings, Ciel and Eggs
February 2012 Challenge
Lucky Count, Lucky Long, Word Couting, Count of Maximum
March 2012 Challenge
Spoon in Matrix, Home Delivery, Free Shuttle Service
March Cook-Off 2012
Ciel Numbers I, Ciel Numbers II
April Challenge 2012
Parallel Computing, Fit to Play, Double Strings, Stacking Pancakes, Greatest Dumpling Fight, Similar Graphs
May Challenge 2012
Jewels and Stones, Lucky lucky number, Divisible Pairs
January Challenge 2013
The Minimum Number Of Moves
July Challenge 2019 Division 2
Minimum and Maximum, Chef and Mean
