February Challenge 2017
Chef and His Apartment Dues
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
September Lunchtime 2017
Chef and Cook-Off Contests
October Challenge 2018 Division 2
Chef and Circles, Byte to Bit, Chef and Serves, Chef and Surprise Chessboard, Minimize Digitsum
Quick Code (Rated for Division 2)
Immortal Frieza, Majin Vegeta, Dr Geros lab
August Challenge 2020 Division 2
Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP
September Challenge 2020 Division 2
A Problem on Sticks, Ada Matrix
Bangladesh