March 2010 Contest
K-important Strings, The Best Tower, Tri-Hexagonal Puzzle, Traffic jam, Treasure Hunting
May 2010 Contest
Lights Out, Nice Quadrangles, Rendezvous, Summing Slopes
June 2010 Contest
Robot Game, Squirrel and chestnut
October 2010 Challenge
Logging Game, Count palindromes, Integer Combinations Of Vectors
March 2011 Challenge
K-Unique Sequence, Squares Game, Buying Land, Omax
April Long Contest
Gravel, Number Game Revisited, Rectangles Counting
