November Challenge 2019 Division 2
Chef and Minimum Colouring, Physical Exercise
December Challenge 2019 Division 2
Chefina and Ranges, Plus Multiply, Binary XOR, Easy Subsequence Selection, That Is My Score!, Addition
January Challenge 2020 Division 2
Chef and Dynamo, Breaking Bricks, Chefina and Prefix Suffix Sums, Equality, Doraemon
April Challenge 2020 Division 1
COVID Pandemic and Long Queue, Squared Subsequences, Leaked Answers (Challenge), Sell All the Cars, Unit GCD, Ready Bitwise, Strange Number
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Chef and String, Chef and Price Control
July Challenge 2020 Division 2
Ada King, Missing a Point, Chef and Card Game, Chef and Strings
