December Challenge 2018 Division 2
Chef and Interactive Contests, Chef and An Ideal Problem
November Challenge 2018 Division 2
Chef and Difficult Contests
January Challenge 2019 Division 2
Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef
February Cook-Off 2019 Division 2
Chef and Party, Buying New Tablet
March Challenge 2019 Division 2
Chef and Number Game, Chef and a Beautiful Digit
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
April Cook-Off 2019 Division 2
Making a Meal, Chef Learning Hungarian Algorithm
May Lunchtime 2019 Division 2 (Unrated)
Dummy Palindromic Strings, CV
June Challenge 2019 Division 2
Chef and Proxy, Sum and GCD, Chef and Ingredients, Lent Money, Road Signs, Guddu on a Date
July Challenge 2019 Division 2
Guess the Prime!, Parity Again, Circular Merging, Minimum and Maximum, Chef and Mean
August Challenge 2019 Division 1
Football, Distribute Apples, Zombie and the Caves
February Challenge 2020 Division 1
No Change Required, Long Contest and Cook Off Overlaps, (Challenge) Raisins, Hard Cash, School of Geometry, The Theatre Problem, Expected Change, Chef and Railway Stations
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise, Leaked Answers (Challenge)
Code Ensemble (Rated for Division 2)
Cherry and Bits, Priya and AND, Traversing Trees, Help Martha
India