March Challenge 2019 Division 2
Chef and Number Game, Chef and a Beautiful Digit, Chef got Recipes
September Challenge 2019 Division 2
Easy Fibonacci, Chef Designed a Network, Chef and Interesting Subsequences
October Challenge 2019 Division 2
Missing Number, Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices
December Challenge 2019 Division 2
That Is My Score!, Addition, Easy Subsequence Selection, Binary XOR, Plus Multiply
February Challenge 2020 Division 1
Chef and Railway Stations, No Change Required, Long Contest and Cook Off Overlaps
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise, Leaked Answers (Challenge)
August Challenge 2020 Division 1
Subsequence Frequency Counting, Smallest KMP, Chef Thanos Wants Perfect Balance, Chef and Wedding Arrangements
India