January Challenge 2019 Division 2
Fancy Quotes, Lucky Number Game
February Challenge 2019 Division 2
Manhattan Rectangle, Guess It Right, Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, 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, Yet Again a Subarray Problem, Chef and Number Game
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
April Cook-Off 2019 Division 2
Pied Piper vs Hooli, Making a Meal, Chef Learning Hungarian Algorithm
June Challenge 2019 Division 2
Sum and GCD, Chef and Ingredients, Chef and Proxy, Road Signs, Guddu on a Date
August Challenge 2019 Division 2
Guddu and his Mother, Dilemma, Football, Distribute Apples, Zombie and the Caves
September Challenge 2019 Division 2
Chef and Good Subsequences, Easy Fibonacci, Chef and Interesting Subsequences
September Lunchtime 2019 Division 2
Chef Feeds Cats, Find the Sum
October Challenge 2019 Division 2
Even Edges, Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices
UWCOI 2020 (Rated for all)
Button Pairs, Find maximum in an Array
September Lunchtime 2020 Division 2
GCD operations, Watermelon
India