October Challenge 2014
Chef and Square, Remy paints the fence
November Challenge 2014
Chef and Segment Game, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome
December Challenge 2014
Chef Under Pressure, XOR with Subset
January Challenge 2015
Gcd Queries, One Dimensional Kingdoms, Sereja and Votes, Chef and Stones
March Challenge 2015
Count Substrings, Chef and Notebooks, Devu and his Class
May Challenge 2015
Devu and binary String, Chef and Prime Divisors, Set Difference , Chef and new recipe
June Challenge 2017
A Good Set, Xenny and Coin Rankings, Triplets
