March Cook-off 2018 Division 2
Chef Judges a Competition
December Challenge 2018 Division 2
Max and Electrical Panel, Chef and Interactive Contests, Chef and An Ideal Problem
November Challenge 2018 Division 2
Chef and Difficult Contests
March Challenge 2019 Division 2
Chef and Number Game, Chef and a Beautiful Digit
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Subtree Removal, Fencing
April Challenge 2020 Division 2
COVID Pandemic and Long Queue
September Challenge 2020 Division 2
A Problem on Sticks, Ada Matrix
Brazil