April Challenge 2014
Shortest Path in Binary Trees, Farmer Feb
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Way Out, Gravity Guy, Devu And Churu , Cooking Machine, Aditi and Magic Trick
September Challenge 2015
Count Steps in Matrix, Cracking the Code, Lighthouses, Bank robbery, Nikitosh and xor, 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
May Challenge 2017
Courses in an university, Median of adjacent maximum numbers
India