August Long Challenge 2017
Chef and Mover, Chef and Rainbow Array, Greedy Candidates, Palindromic Game
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Max Mex, Counter Test For CHEFSUM, A Balanced Contest
December Challenge 2017
Chef And his Cake, Penalty Shoot-out
September Lunchtime 2017
Chef and Cook-Off Contests
January Challenge 2018
K-Concatenation, Rectangle
February Challenge 2018
Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome
March Challenge 2018 DIV 2
Minion Chef and Bananas, Minions and Voting, Mix the Colors, A Big Sale, Chef and Easy Problem, Chef and Glove
August Challenge 2018 Division 2
Modular GCD, Problem Sort, Sheokand and Number, Spell Bob
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures
November Challenge 2018 Division 2
Chef and Difficult Contests
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
September Lunchtime 2018 Division 2
Judging Delay, Opposite Cites, Chef Restaurant
January Challenge 2019 Division 2
Lucky Number Game, Chef and Modulo Game, Fancy Quotes
February Challenge 2019 Division 2
Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef
India