September Challenge 2014
Chef and Left-Right, Fun with Rotation
October Challenge 2014
Chef and Ground, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus
November Challenge 2014
Chef and Segment Game, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome, The Spelling Problem
December Challenge 2014
XOR with Subset, Chef and Apple Trees
October Lunchtime 2014
Tanu and Head-bob, Cascading Style Sheets
January Challenge 2015
Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries
January Cook-Off 2015
Suraj goes shopping, Tojo hates probabilities
August Challenge 2015
Aditi and Magic Trick, Cooking Machine, Gravity Guy
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix, Lighthouses
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire, Spheres
November Challenge 2015
Eugene and function, Simple Sum, Chef and cakes
June Challenge 2016
Chef And Binary Operation, Devu and an Array, Chef and Coins Game
July Challenge 2017
Chef and Sign Sequences, Whats in the Name, Calculator
October Challenge 2017
Chef and a great voluntary Program, Max Mex, A Balanced Contest
December Challenge 2017
Total Diamonds, Chef And his Cake, Penalty Shoot-out
India