February 2012 Challenge
Count of Maximum, Lucky Long
April Challenge 2012
Fit to Play, Double Strings, Stacking Pancakes
May Challenge 2012
A Home for Chef, Remember the recipe, Lucky lucky number, Jewels and Stones
June Challenge 2012
Little Elephant and Candies, Arranging Cup-cakes
November Cook-Off 2012
Little Elephant and Permutations
April Challenge 2013
Maximum Weight Difference
August Challenge 2013
Little Elephant and Lemonade, Splitting Candies
November Challenge 2013
Uncle Johny, Square Digit Squares, Missing some chairs
January Challenge 2014
Please like me, Chef and Feedback
May Challenge 2014
Compilers and Parsers, Stone, Chef-jumping
June Challenge 2014
Chef and Subarray, Guessing Game
November Challenge 2014
Distinct Characters Subsequence
Canada