October Mega Cook-Off 2018 Division 2
Ada and the Staircase, Binary Nim 2
November Challenge 2018 Division 2
Chef and Ridges, Appy Loves One, Good Median, Chef, Primes and Trees (Challenge), Magician versus Chef 2, Chef and Difficult Contests, Chef and Happiness
July Challenge 2019 Division 1
Guess the Prime!, Codechef War
August Challenge 2019 Division 1
Guddu and his Mother, Zombie and the Caves, Distribute Apples, Football, Maximize an Expression, Dilemma, Encoding
October Challenge 2019 Division 1
Even Edges, Bacterial Reproduction, Chef and Maximum Star Value, Array Modification, (Challenge) Maximizing LIS
India