November Challenge 2014
Distinct Characters Subsequence
April Challenge 2015
Chef and Interview, Broken Telephone, Chef and Piano Scales
August Challenge 2015
Way Out, Gravity Guy, Cooking Machine, Aditi and Magic Trick
September Challenge 2015
Bank robbery, Cracking the Code, Lighthouses, Count Steps in Matrix, Chain of Doughnuts
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle
August Cook-Off 2015
Chef and the XORed Number , Chef and the Wildcard Matching
August Lunchtime 2015
Churu and lost string, Minimum Maximum
September Lunchtime 2015
Sum of palindromic numbers
India