February 2012 Challenge
Count of Maximum, Lucky Long
March Cook-Off 2012
Ciel Numbers I, Ciel Numbers II
April Challenge 2012
Fit to Play, Double Strings
May Challenge 2012
Jewels and Stones, Lucky lucky number
June Challenge 2012
Arranging Cup-cakes, Little Elephant and Candies
August Challenge 2012
Little Elephant and Bombs, Range of Data, Delivery Boy
September Challenge 2012
Kisses & Hugs, Racing Horses, ChefTown Parade
January Challenge 2013
Three Different Numbers, Chef of the Year, End Of The World, Dividing Products, Little Elephant and Alcohol, The Minimum Number Of Moves
March Challenge 2013
Tourist Translations, Approximately, Fire Escape Routes
March Cook-off 2013
The Ball And Cups, Palindrome, Traveling Plan
April Cook-Off 2013
Andrew and the Meatballs, Andrew and the Strings, Andrew and the Meatballs again
May Challenge 2013
Matchsticks, Your Name is Mine, Name Reduction
May Cook-off 2013
Subtraction Game 1, Subtraction Game 2
August Cook-Off 2013
Chef and The Right Triangles
July Cook-Off 2014
Copy-Paste, Sum Queries, Friends
October Challenge 2014
Chef and Ground, Chef and Square
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