June Challenge 2020 Division 2
Chef and String, Chef and Price Control
July Challenge 2020 Division 2
Ada King, Chef and Card Game, Chef and Strings
August Challenge 2020 Division 2
Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess
October Challenge 2020 Division 2
Positive AND, Replace for X, Covid Run
December Challenge 2020 Division 2
Positive Prefixes, Vaccine Distribution, Vaccine Production, Even Pair Sum
January Challenge 2021 Division 3
Fair Elections, Chef and Division 3, Point Of Impact, Encoded String
September Challenge 2021 Division 3 (Rated)
XOR Equal, Shuffling Parities, Airline Restrictions, Travel Pass
October Challenge 2021 Division 3 (Rated)
Three Boxes, Which Mixture
India