November Cook-Off 2018 Division 2
Truth and Dare, Beautiful Garland
December Challenge 2018 Division 2
Chef and Interactive Contests, Chef and An Ideal Problem
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests, Chef and Happiness
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit, Minimize Digitsum
January Challenge 2019 Division 2
Different Neighbours, Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes
February Challenge 2019 Division 2
Deputy Chef, Art of Balance, Appy and Contest, Chef and Magical Jars, Guess It Right, Chef and Secret Ingredients
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Chef and a Beautiful Digit, (Challenge) Interleaving Strings
April Challenge 2019 Division 2
Friend or Girlfriend, Fencing, Maximum Remaining, Playing with Numbers
January Challenge 2020 Division 2
Doofish Matrix, (Challenge) Building Anthills, Breaking Bricks, English, Chefina and Prefix Suffix Sums, Equality, Doraemon, Chef and Dynamo
February Challenge 2020 Division 1
No Change Required, (Challenge) Raisins, Long Contest and Cook Off Overlaps
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Perfect Power Divisors, Ready Bitwise, Unit GCD, Leaked Answers (Challenge)
India