April Challenge 2017
Similar Dishes, Dish Of Life
May Challenge 2017
Chef and his daily routine
June Challenge 2017
Chef and Prime Queries, A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
July Challenge 2017
Chef and Sign Sequences, Calculator , Whats in the Name
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Chef and Cycled Cycles, A Balanced Contest, Counter Test For CHEFSUM, Max Mex
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
October Cook-Off 2017
Chef and Employment Test, Chef and Weird Queries
June Challenge 2020 Division 1
The Tom and Jerry Game!, Covid Sampling (Challenge)
Bangladesh