February Challenge 2019 Division 2
Appy and Contest, (Challenge) Chef with Orchestra in the Kitchen, Chef and Magical Jars
February Cook-Off 2019 Division 2
Chef and Secret Password, Buying New Tablet, Chef and Party
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Lent Money, Guddu on a Date, Chef and Ingredients, Sum and GCD, (Challenge) SnackDown 99
June Cook-Off 2019 Division 2
Multiple Choice Exam, Drink Slush, Eat Twice, Ants and Anteaters
July Challenge 2019 Division 1
Guess the Prime!, Circular Merging
August Challenge 2019 Division 1
Guddu and his Mother, Dilemma
October Challenge 2019 Division 2
Phone Prices, Operations on a Matrix, Bacterial Reproduction, (Challenge) Maximizing LIS, Chef and Maximum Star Value, Array Modification, Even Edges, Missing Number
December Challenge 2019 Division 2
Plus Multiply, Binary XOR, Easy Subsequence Selection, That Is My Score!
February Challenge 2020 Division 2
Long Contest and Cook Off Overlaps, (Challenge) Raisins, Hard Cash, School of Geometry, The Theatre Problem, No Change Required, Chef and Railway Stations
March Challenge 2020 Division 1
Chef and DAG, Lasers Everywhere
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Perfect Power Divisors, Ready Bitwise, Factor Tree, Leaked Answers (Challenge)
February Lunchtime 2020 Division 2
At the Gates, Not All Flavours
August Cook-Off 2020 Division 1
Red-blue Trees, Polygon Relationship
India