August Challenge 2015
Way Out, Gravity Guy, Cooking Machine, Aditi and Magic Trick
October Challenge 2015
Count Subarrays, Who dares to be a millionaire, Spheres
August Cook-Off 2015
Chef and the Wildcard Matching
July Lunchtime 2015
Greedy puppy, Puppy and game
March Challenge 2016
Palindromic substrings, maximize the sum
September Challenge 2016
Chef and digits of a number, Faded Palindromes
February Challenge 2018
Chef And His Characters, Chef And The Patents
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date
December Challenge 2020 Division 2
Even Pair Sum, Vaccine Production, Vaccine Distribution
India