December Challenge 2018 Division 2
Chef and Interactive Contests, Chef and An Ideal Problem
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining
June Challenge 2019 Division 2
Sum and GCD, Chef and Ingredients, Guddu on a Date, Chef and Proxy, Road Signs
July Challenge 2019 Division 2
Parity Again, Minimum and Maximum, Chef and Mean
August Challenge 2019 Division 2
Zombie and the Caves, Distribute Apples, Dilemma, Guddu and his Mother, Football
September Challenge 2019 Division 2
Chef and Good Subsequences, Easy Fibonacci, Chef Designed a Network, Chef and Interesting Subsequences
October Challenge 2019 Division 2
Operations on a Matrix, Phone Prices, (Challenge) Maximizing LIS, Array Modification, Chef and Maximum Star Value, Missing Number, Even Edges
November Challenge 2019 Division 1
Physical Exercise, A Simple Game
February Challenge 2020 Division 1
No Change Required, Long Contest and Cook Off Overlaps
India