April Challenge 2017
Similar Dishes, Dish Of Life
May Challenge 2017
Courses in an university, Median of adjacent maximum numbers, Chef and his daily routine
June Challenge 2017
A Good Set, Xenny and Coin Rankings
July Challenge 2017
Chef and Sign Sequences, Whats in the Name
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Greedy Candidates
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Counter Test For CHEFSUM, A Balanced Contest, Max Mex, Chef and a great voluntary Program
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
October Cook-Off 2017
Chef and Counting Test, Chef and Employment Test, Chef and Weird Queries
November Cook-Off 2017
Online Chess, Random Pair
February Challenge 2018
Chef And His Characters, Chef And The Patents, Points Inside A Polygon, Car-pal Tunnel, Permutation and Palindrome
October Challenge 2018 Division 2
Byte to Bit, Minimize Digitsum, Chef and Serves
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Deputy Chef
August Challenge 2019 Division 2
Distribute Apples, Zombie and the Caves, Football, Dilemma
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Ready Bitwise, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue
India