April Challenge 2014
Shortest Path in Binary Trees, Farmer Feb
June Challenge 2014
Guessing Game, Forgot Password, Chef and Subarray
August Challenge 2014
The Leaking Robot, Chef and Gift
November Challenge 2014
Chef and Segment Game, Distinct Characters Subsequence, Chef and Red Black Tree
January Challenge 2015
Chef and Stones, Gcd Queries, One Dimensional Kingdoms, Sereja and Votes, Chef and A Large Permutation, Sereja and Number Division 2
February Challenge 2015
Chef and Chain, Chef and Strange Formula, Let us play with rank list, Chef and Equality
March Challenge 2015
Chef and Notebooks, Sign Wave
May Challenge 2015
Chef and new recipe, Set Difference , Devu and binary String, Chef and Prime Divisors
June Challenge 2015
Steady tables, Chef and Memory Limit, Chef and Polygons
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Gravity Guy, Cooking Machine, Aditi and Magic Trick
September Challenge 2015
Lighthouses, Bank robbery, Count Steps in Matrix, Chain of Doughnuts
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire, Rupsa and Equilateral Triangle
November Challenge 2015
Eugene and function, Chef and cakes
December Challenge 2015
Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence
India