June Challenge 2014
Chef and Subarray, Guessing Game
July Challenge 2014
Count Substrings, Reach The Point
August Challenge 2014
The Leaking Robot, Cleaning Tables, Chef and Gift
September Challenge 2014
Chef and Left-Right, Fun with Rotation
October Challenge 2014
Remy paints the fence, Chef and Ground, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus
November Challenge 2014
Distinct Characters Subsequence, Let us construct palindrome
January Challenge 2015
Gcd Queries, Chef and Stones, One Dimensional Kingdoms, Chef and A Large Permutation, Sereja and Votes
February Challenge 2015
Chef and Chain, Chef and Strange Formula, Let us play with rank list, Chef and Equality
April Challenge 2015
Chef and Interview, Broken Telephone, Chef and Piano Scales
May Challenge 2015
Chef and new recipe, Set Difference
June Challenge 2015
Chef and Memory Limit, Chef and Polygons
April Cook-Off 2015
Equality, Version Control System
May Cook-Off 2015
Devu and friendship testing
June Lunchtime 2015
Chef and Submatrix, Chef and Two Strings
India