May Challenge 2014
Chef-jumping, Compilers and Parsers, Stone
June Challenge 2014
Chef and Subarray, Guessing Game, Forgot Password
July Challenge 2014
Chef and Frogs, Count Substrings, Reach The Point
August Challenge 2014
The Leaking Robot, Chef and Gift
September Challenge 2014
Chef and Rainbow Array - 2, Fun with Rotation, Chef and Left-Right
October Challenge 2014
Remy paints the fence, Chef and Ground, Chef and Square, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus
November Challenge 2014
Distinct Characters Subsequence
January Challenge 2015
Chef and Stones, Sereja and Votes, Gcd Queries
February Challenge 2015
Chef and Chain, Chef and Equality
October Challenge 2015
Count Subarrays, Who dares to be a millionaire
March Challenge 2016
Palindromic substrings, maximize the sum
April Challenge 2016
Chef and Ballons, Chef And Coloring
China