December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
November Challenge 2018 Division 2
Chef and Difficult Contests
March Challenge 2019 Division 2
Chef and Number Game, Chef and a Beautiful Digit
June Challenge 2019 Division 2
(Challenge) SnackDown 99, Guddu on a Date, Chef and Proxy, Road Signs
June Cook-Off 2019 Division 2
Multiple Choice Exam, Eat Twice
July Challenge 2019 Division 2
Guess the Prime!, Parity Again, Circular Merging, Minimum and Maximum, Chef and Mean
India