November Challenge 2019 Division 2
Weapon Value, Hard Sequence
December Challenge 2019 Division 2
Plus Multiply, Binary XOR, Easy Subsequence Selection, That Is My Score!, Addition
December Lunchtime 2019 Division 2
Stupid Machine, Check Algorithm
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon, Equality, Breaking Bricks
February Challenge 2020 Division 2
No Change Required, Long Contest and Cook Off Overlaps, Hard Cash, School of Geometry, The Theatre Problem
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue
May Challenge 2020 Division 2
Triple Sort, Isolation Centers, Coronavirus Spread
January Cook-Off 2020 Division 2
Chef Chick, Exam Cheating
May Lunchtime 2020 Division 2
Weird Walk, Convert the String, Lost Weekends
June Challenge 2020 Division 2
Chef and Price Control, Chef and String, Covid Sampling (Challenge), Chef and Icecream, The Tom and Jerry Game!, Even Matrix
July Challenge 2020 Division 2
Ada King, Chefina and Swaps, Missing a Point, Doctor Chef, Chef and Card Game, Chef and Strings
June Lunchtime 2020 Division 2
Maximum AND, Chef and Demonetisation, Increasing Decreasing
Coders' Legacy (Rated for all)
Chef vs Doof, Doof on Cartesian
India