April Challenge 2020 Division 2
Factor Tree, Perfect Power Divisors
July Cook-Off 2020 Division 1
Even-tual Reduction, OR-thodox Distinction, Path-etic Products
August Lunchtime 2020 Division 1
Game on a Strip, Counting Graphs, Alien Invasion
June Cook-Off 2020 Division 2
Banned Quotient, Checkpoints, Max Mex, Per Capita Income, Cache Hits
June Lunchtime 2020 Division 2
Maximum AND, Chef and Demonetisation, Increasing Decreasing, Gold Mining, Square Submatrices
December Lunchtime 2020 Division 1 (Unrated)
Even Sequence, Three Letters, One Zero Swaps
September Cook-Off 2020 Division 1
Maximise Subsequence Value
Canada