August Challenge 2019 Division 2
Football, Distribute Apples, Zombie and the Caves, Dilemma
September Challenge 2019 Division 2
Chef and Good Subsequences, Easy Fibonacci, Chef Designed a Network, Chef and Interesting Subsequences
October Challenge 2019 Division 2
Phone Prices, Operations on a Matrix, Array Modification, Chef and Maximum Star Value, Even Edges
November Challenge 2019 Division 2
Physical Exercise, Hard Sequence, Weapon Value, Chef and Minimum Colouring
December Challenge 2019 Division 2
Chefina and Ranges, Plus Multiply, Binary XOR, Easy Subsequence Selection, That Is My Score!, Addition
January Challenge 2020 Division 1
Doraemon, Breaking Bricks, Chefina and Prefix Suffix Sums, Chef and Dynamo, Equality
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue
May Challenge 2020 Division 1
Isolation Centers, Coronavirus Spread, Sorting Vases, Triple Sort
January Cook-Off 2020 Division 1
Chef Chick, Exam Cheating
November Challenge 2020 Division 1
Restore Sequence, Ada and Dishes, Magical Candy Store
December Challenge 2020 Division 1
Vaccine Production, Vaccine Distribution
January Long 2022 - II, Division 2 (Unrated)
Crying Colours, TCS Examination, Chef and Fixed Deposits
India