December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests, Chef and Happiness
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Chef and Modulo Game, A Pizza Slice, Fancy Quotes, Distinct Pairs, Lucky Number Game, Different Neighbours
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Deputy Chef
September Challenge 2021 Division 3 (Rated)
Airline Restrictions, Travel Pass
India