March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove
March Cook-off 2018 Division 2
Chef Judges a Competition
April Challenge 2018 Division 2
Chef and Array (Challenge), Count Good Prefixes, Workers
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again
November Challenge 2018 Division 2
Chef and Difficult Contests
February Challenge 2020 Division 2
Hard Cash, School of Geometry
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Chef and String, Chef and Price Control
July Challenge 2020 Division 2
Chef and Card Game, Chef and Strings, Missing a Point, Ada King
August Challenge 2020 Division 2
Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP, Chef and Wedding Arrangements
November Challenge 2020 Division 2
Restore Sequence, Ada and Dishes, Iron, Magnet and Wall
