December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
January Challenge 2019 Division 2
Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes, A Pizza Slice, Different Neighbours
February Challenge 2019 Division 2
Deputy Chef, Appy and Contest, Chef and Secret Ingredients, Chef and Magical Jars
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date, Chef and Ingredients, Sum and GCD
July Challenge 2019 Division 2
Minimum and Maximum, Chef and Mean
August Challenge 2019 Division 2
Zombie and the Caves, Distribute Apples, Dilemma, Guddu and his Mother, Football
October Challenge 2019 Division 2
Array Modification, Operations on a Matrix, Phone Prices
April Challenge 2020 Division 2
Strange Number, Unit GCD, Sell All the Cars, COVID Pandemic and Long Queue
June Challenge 2020 Division 2
Even Matrix, Chef and Price Control, Chef and String, Chef and Icecream, Operations on a Tuple, The Tom and Jerry Game!
July Challenge 2020 Division 1
Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef
India