April Challenge 2012
Fit to Play, Double Strings, Stacking Pancakes, Similar Graphs
May Challenge 2012
Jewels and Stones, Lucky lucky number, Remember the recipe
May Cook-Off 2012
Little Elephant and Strings
June Challenge 2012
Arranging Cup-cakes, Little Elephant and Candies
August Challenge 2012
Little Elephant and Bombs, Delivery Boy
September Challenge 2012
Kisses & Hugs, Racing Horses
September Cook-Off 2012
Recipe Reconstruction, Carvans
November Cook-Off 2012
Little Elephant and Permutations
February 2013 Challenge
Climbing Stairs, Efficient Painting, Buy1-Get1
February Cook-Off 2013
Lack of Logic, Row and Column Operations
March Challenge 2013
Tourist Translations, Approximately
April Challenge 2013
Little Elephant and Music, Maximum Weight Difference, Levy Conjecture
May Challenge 2013
Your Name is Mine, Name Reduction, Matchsticks
June Cook-Off 2013
Attic Crossing, Lyra and the Alethiometer
August Challenge 2013
Little Elephant and Lemonade, Hello Hello, Splitting Candies
August Cook-Off 2013
Chef and The Right Triangles
