August Challenge 2019 Division 2
Dilemma, Football, Distribute Apples
September Challenge 2019 Division 2
Easy Fibonacci, Chef and Interesting Subsequences
October Challenge 2019 Division 2
Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices
November Challenge 2019 Division 2
Hard Sequence, Weapon Value
January Challenge 2020 Division 2
Chef and Dynamo, Breaking Bricks, Equality, Doraemon
February Challenge 2020 Division 2
No Change Required, The Theatre Problem, School of Geometry, Hard Cash, Long Contest and Cook Off Overlaps
April Challenge 2020 Division 2
COVID Pandemic and Long Queue, Leaked Answers (Challenge), Ready Bitwise, Sell All the Cars, Squared Subsequences, Strange Number, Unit GCD
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control
July Challenge 2020 Division 1
Doctor Chef, Missing a Point, Chefina and Swaps
June Cook-Off 2020 Division 2
Cache Hits, Per Capita Income, Max Mex
November Challenge 2020 Division 1
Restore Sequence, Magical Candy Store
December Challenge 2020 Division 1
Hail XOR, Calculus, String Operations, Positive Prefixes, Even Pair Sum
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