October Challenge 2019 Division 2
Phone Prices, Operations on a Matrix
December Challenge 2019 Division 2
Plus Multiply, That Is My Score!
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon, Breaking Bricks
April Challenge 2020 Division 2
Leaked Answers (Challenge), COVID Pandemic and Long Queue, Sell All the Cars, Unit GCD, Squared Subsequences, Strange Number
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
August Challenge 2020 Division 2
Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP
India