February Challenge 2020 Division 2
Hard Cash, School of Geometry
March Challenge 2020 Division 2
XOR Engine, Ada Bishop 2, Pintu and Fruits
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue
April Cook-Off 2020 Division 2
Matrix Decomposition, Lift Requests
July Cook-Off 2020 Division 2
Even-tual Reduction, OR-thodox Distinction
August Lunchtime 2020 Division 2
Game on a Strip, Mode of Frequencies
December Cook-Off 2020 Division 2
Self-Destructing Strings, Catch the Thief, Minimum Attendance Requirement
Coders' Legacy (Rated for all)
Chef vs Doof, Doof on Cartesian
September Cook-Off 2020 Division 2
Bulbs and Wires, Bowling Strategy
September Lunchtime 2020 Division 2
GCD operations, Root the Tree, Watermelon
