December Challenge 2018 Division 2
Chef and Interactive Contests, Max and Electrical Panel, Chef and An Ideal Problem
November Challenge 2018 Division 2
Chef and Ridges, Chef, Primes and Trees (Challenge), Chef and Difficult Contests, Chef and Happiness
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Distinct Pairs, A Pizza Slice, (Challenge) Chef and Matching Game, Fancy Quotes, Chef and Modulo Game, Lucky Number Game, Different Neighbours, Yet Another Problem About Sequences
February Challenge 2019 Division 1
Deputy Chef, Art of Balance, (Challenge) Chef with Orchestra in the Kitchen, Chef and Secret Ingredients, Chef and Magical Jars, Guess It Right, Manhattan Rectangle, Appy and Contest
February Cook-Off 2019 Division 1
Max Range Queries, Chef and Secret Password, Chef and Party
March Challenge 2019 Division 1
Cheating on Queue, (Challenge) Interleaving Strings, Chef and a Beautiful Digit, Yet Again a Subarray Problem, Chef and Number Game, Chef got Recipes, Chef and Soccer
August Challenge 2019 Division 1
Guddu and his Mother, Dilemma, Maximize an Expression, Football, Distribute Apples, Zombie and the Caves
India