July Challenge 2015
Na2a and lucky stone, Chef and Cube, Bread
August Challenge 2015
Gravity Guy, Cooking Machine, Aditi and Magic Trick
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix, Bank robbery, Lighthouses, Cracking the Code
October Challenge 2015
Rupsa and Equilateral Triangle, Who dares to be a millionaire, Count Subarrays, Time measure
November Challenge 2015
Eugene and function, Chef and cakes
December Challenge 2015
Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence
August Cook-Off 2015
Chef and the XORed Number , Chef and the Wildcard Matching
November Cook-Off 2015
Sereja and Array and Subtracting
March Cook-Off 2016
Digital clock, Alternating subarray prefix
India