December Challenge 2018 Division 2
Chef and Interactive Contests
February Challenge 2019 Division 2
Chef and Magical Jars, Deputy Chef, Appy and Contest, Chef and Secret Ingredients
September Challenge 2019 Division 2
Easy Fibonacci, Chef Designed a Network, 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
December Challenge 2019 Division 2
Plus Multiply, That Is My Score!
January Challenge 2020 Division 2
Chef and Dynamo, Breaking Bricks
February Challenge 2020 Division 2
Long Contest and Cook Off Overlaps, Hard Cash, School of Geometry, The Theatre Problem, No Change Required, Chef and Railway Stations
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue
January Lunchtime 2020 Division 2
Bob and His Friends, Chef and Street Food
India