July Challenge 2020 Division 2
Missing a Point, Chef and Card Game, Chef and Strings, Ada King
July Cook-Off 2020 Division 1
Even-tual Reduction, OR-thodox Distinction, Path-etic Products
July Lunchtime 2020 Division 1
Golomb Sequence, Binary Concatenation
August Cook-Off 2020 Division 1
Polygon Relationship, Red-blue Trees
June Lunchtime 2020 Division 2
Maximum AND, Chef and Demonetisation, Increasing Decreasing, Gold Mining, Square Submatrices
January Challenge 2021 Division 1
Chef and Ants, Expected Number of SCCs
December Challenge 2020 Division 1
Hail XOR, Even Pair Sum, Positive Prefixes, String Operations, Calculus, Square Root of LCA Convolution
January Cook-Off 2021 Division 1
Mex Subsequence, Not Too Colourful, Common Ancestors
Coders' Legacy (Rated for all)
Chef vs Doof, Doof on Cartesian, Doof fires Brackets, Jeremy gets a gift
September Lunchtime 2020 Division 1
Root the Tree, Robot Detector
February Lunchtime 2021 Division 1
Average Sorting, Sed Max, Independent Set
India