December Challenge 2018 Division 2
Max and Electrical Panel, Chef and An Ideal Problem, Chef and Meatballs, Chef and Interactive Contests
November Challenge 2018 Division 2
Chef and Ridges, Appy Loves One, Chef and Difficult Contests, Chef and Happiness
Encoder (Rated for Division 2)
Knight Chess, Paint the Wall
January Challenge 2019 Division 2
Lucky Number Game, Fancy Quotes, Chef and Modulo Game, Distinct Pairs, Different Neighbours
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef
March Challenge 2019 Division 2
(Challenge) Interleaving Strings, Chef and a Beautiful Digit, Chef got Recipes, Chef and Number Game
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Subtree Removal, Fencing
August Challenge 2019 Division 2
Guddu and his Mother, Dilemma, Football, Distribute Apples, Zombie and the Caves
October Challenge 2019 Division 2
Even Edges, Phone Prices, Operations on a Matrix, Array Modification, Chef and Maximum Star Value, Missing Number
February Challenge 2020 Division 1
Chef and Railway Stations, No Change Required, The Theatre Problem, School of Geometry, Hard Cash, (Challenge) Raisins, Long Contest and Cook Off Overlaps
India