September Challenge 2017
Minimum Good Permutation, Little Chef and Sums
February Challenge 2018
Chef And His Characters, Chef And The Patents
March Challenge 2018 DIV 2
Mix the Colors, Minion Chef and Bananas, Minions and Voting, Chef and Glove, A Big Sale, Chef and Easy Problem
March Cook-off 2018 Division 2
Chef Goes to the Cinema, Chef Judges a Competition
April Challenge 2018 Division 2
Weight of Numbers, Workers, Average of Pairs, Count Good Prefixes, Highway Crossing, Chef and Array (Challenge)
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again
July Challenge 2018 Division 2
Magic Set, Strike or Spare
January Challenge 2019 Division 2
Lucky Number Game, Distinct Pairs, Fancy Quotes
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
India