September Lunchtime 2019 Division 2
Chef Feeds Cats, Chef and Football Match, All Substrings
February Challenge 2020 Division 2
The Theatre Problem, Long Contest and Cook Off Overlaps, (Challenge) Raisins, Hard Cash, School of Geometry, No Change Required
July Challenge 2020 Division 1
Ada King, Chef and Strings, Chef and Card Game, Doctor Chef, Missing a Point, Chefina and Swaps
August Challenge 2020 Division 1
Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP
Coders' Legacy (Rated for all)
Chef vs Doof, Doof on Cartesian, Doof fires Brackets
September Cook-Off 2020 Division 1
Maximise Subsequence Value, Minimum Insertions
India