October Lunchtime 2019 Division 2
Khaled in HIT, Box Game, Counting Inversions Revisited
November Challenge 2019 Division 2
Chef and Minimum Colouring, Weapon Value, A Simple Game, Hard Sequence, Physical Exercise
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon, Equality, Breaking Bricks
February Challenge 2020 Division 2
(Challenge) Raisins, Long Contest and Cook Off Overlaps, Hard Cash, The Theatre Problem, No Change Required, Chef and Railway Stations, School of Geometry
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise, Leaked Answers (Challenge)
February Cook-Off 2020 Division 2
XOR Game, Penalty Shoot-Out II, Tax Slabs
January Lunchtime 2020 Division 2
Bob and His Friends, Chef and Street Food
February Challenge 2021 Division 2
Frog Sort, Team Name, Another Tree with Number Theory, Prime Game, Multiple Games, XOR Sums, Maximise Function
March Cook-Off 2021 Division 2
Consecutive Deletions, Matrix XOR, Guess the Number
India