August Cook Off
Arranging the Appetizers, Cleaning Up
November 2010 Challenge
Randomly Testing Circuits
The December 2010 Cook-Off
The Morning Commute, Pairing Chefs
June Cook-off
Correctness of Knight Move
September Long Contest
BIT Magazine, Younger Brother
October Long Contest 2011
Dish Distribution, The Great Plain, The Baking Business, Repeated String, Lucky Palin
September Cook-off
Last Digit Sum, Digit Rotation, Hotel Bytelandia
November Long Contest 2011
Chefs new Pet, New Restaurant, The Postal Service, Stepping Average
December 2011 Long Contest
Birthday Gift, Ciel and Eggs, Robot Movings
December Cook-Off
Ciel and New Menu, Ciel and A-B Problem
February 2012 Challenge
Box and Ball System, Lucky Count, Lucky Long, Word Couting, Count of Maximum
March 2012 Challenge
Free Shuttle Service, Spoon in Matrix, Home Delivery
March Cook-Off 2012
Ciel Numbers I, Ciel Numbers II
April Challenge 2012
PDS Number, Similar Graphs, Greatest Dumpling Fight, Stacking Pancakes, Double Strings, Fit to Play, Parallel Computing, Lucky Array
May Challenge 2012
Jewels and Stones, Lucky lucky number
December Challenge 2012
Granama Recipes, Magic Rankings, The Uncountable Ways
