October Challenge 2014
Chef and Ground, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus, Remy paints the fence
November Challenge 2014
Distinct Characters Subsequence
January Challenge 2015
Chef and A Large Permutation, Gcd Queries, One Dimensional Kingdoms, Sereja and Votes, Chef and Stones
February Challenge 2015
Chef and Chain, Let us play with rank list, Chef and Equality
August Challenge 2015
Cooking Machine, Gravity Guy
July Cook-Off 2015
Cops and the Thief Devu, Maximize Disjoint Pair Sum
September Challenge 2016
Chef and digits of a number
March Challenge 2017
Xenny and Alternating Tasks
May Challenge 2018 Division 2
Minimum Deletions, Xor Again
India