November Challenge 2014
Distinct Characters Subsequence
February Challenge 2015
Chef and Chain, Chef and Equality
April Challenge 2015
Chef and Interview, Broken Telephone, Chef and Piano Scales
June Challenge 2015
Chef and Memory Limit, Chef and Polygons
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Gravity Guy, Aditi and Magic Trick, Cooking Machine, Way Out
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
October Challenge 2015
Count Subarrays, Who dares to be a millionaire
June Challenge 2016
Chef And Binary Operation, Chef and Coins Game, Devu and an Array, Chef And The Hiring Event
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Max Mex, A Balanced Contest
February Challenge 2018
Chef And His Characters, Permutation and Palindrome, Car-pal Tunnel, Chef And The Patents
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove, Minion Chef and Bananas
March Cook-off 2018 Division 2
Chef Judges a Competition
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again, Dibs on Fibs
India