September Challenge 2017
Minimum Good Permutation, Little Chef and Sums, Chef and Pick Digit
August Cook-Off 2017
Real obtuse, From heaven to earth
February Challenge 2018
Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome
March Challenge 2018 DIV 2
Chef and Easy Problem, Minion Chef and Bananas, Minions and Voting, Chef and Glove, Mix the Colors, A Big Sale
March Lunchtime 2018 Division 2 (Unrated)
Partitions, Chef and Friends, Three Integers, Magic Elements
April Challenge 2018 Division 2
Weight of Numbers, Workers, Count Good Prefixes, Average of Pairs
June Lunchtime 2018 Division 2
Summary Power, Counting Pretty Numbers
August Lunchtime 2018 Division 2
Chef and Problem Setting, Chef and Eid
January Challenge 2019 Division 2
Fancy Quotes, Chef and Modulo Game, Distinct Pairs, Lucky Number Game, Yet Another Problem About Sequences
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Chef and a Beautiful Digit
India