March 2009 (Contest I)
Paying up, Johnny and the Beanstalk
March 2010 Contest
Treasure Hunting, Tri-Hexagonal Puzzle
August 2010 Challenge
Exit code, Obstacle Course, Optimizing Production and Sales
January 2011 Challenge
Chess Pushing Game, Flu Shot Lineup
February Cook - Off Challenge
Breaking Into Atoms, Three Way Communications
April Long Contest
Number Game Revisited, Rectangles Counting
April Cook-Off Challenge
A Prime Conjecture, Internet Media Types
September Challenge 2016
Chef and digits of a number, Faded Palindromes
