December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
January Challenge 2019 Division 2
Fancy Quotes, Lucky Number Game
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef
February Cook-Off 2019 Division 2
Buying New Tablet, Chef and Party
March Challenge 2019 Division 2
Chef and Number Game, Chef and a Beautiful Digit
April Cook-Off 2019 Division 2
Making a Meal, Chef Learning Hungarian Algorithm
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date, Sum and GCD
August Challenge 2019 Division 2
Football, Distribute Apples, Zombie and the Caves, Dilemma
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
March Challenge 2020 Division 2
Ada Bishop 2, Pintu and Fruits, XOR Engine
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Ready Bitwise, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue
April Lunchtime 2021 Division 2
Chef in Heaven , Bench Press, Array Rotation
India