September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
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, Chef and Glove, A Big Sale, Chef and Easy Problem, Mix the Colors
September Challenge 2018 Division 2
Magician versus Chef, Chef and Adventures, Bad Shuffle
October Challenge 2018 Division 2
Byte to Bit, Chef and Circles, Chef and Serves, Chef and Surprise Chessboard, Minimize Digitsum, Appy and Balloons
January Challenge 2019 Division 2
Yet Another Problem About Sequences, Different Neighbours, Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes, (Challenge) Chef and Matching Game, A Pizza Slice
India