December Challenge 2018 Division 2
Chef and Interactive XOR, Chef and Meatballs, Chef and Interactive Contests, Chef and An Ideal Problem, Max and Electrical Panel
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Chef and Modulo Game, Fancy Quotes, Distinct Pairs, Lucky Number Game
February Challenge 2019 Division 2
Manhattan Rectangle, Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, (Challenge) Chef with Orchestra in the Kitchen, Art of Balance, Deputy Chef
February Cook-Off 2019 Division 2
Buying New Tablet, Chef and Party
March Challenge 2019 Division 2
Chef got Recipes, Chef and a Beautiful Digit, Chef and Number Game
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date, Chef and Ingredients, Sum and GCD
July Cook-Off 2019 Division 2
Playing with Strings, Two Variables
August Challenge 2019 Division 2
Guddu and his Mother, Zombie and the Caves, Distribute Apples, Football, Dilemma
October Challenge 2019 Division 1
Even Edges, Chef and Maximum Star Value, Array Modification
India