December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
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
Chef got Recipes, Chef and Number Game, Chef and a Beautiful Digit
September Challenge 2019 Division 2
Easy Fibonacci, Chef and Interesting Subsequences , Chef Designed a Network, Chef and Good Subsequences
February Challenge 2020 Division 2
No Change Required, The Theatre Problem, School of Geometry, Hard Cash, (Challenge) Raisins, Long Contest and Cook Off Overlaps
April Challenge 2020 Division 2
COVID Pandemic and Long Queue, Leaked Answers (Challenge), Sell All the Cars, Squared Subsequences, Strange Number, Unit GCD
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Chef and String, Chef and Price Control
July Challenge 2020 Division 2
Ada King, Chef and Strings, Chef and Card Game, Doctor Chef, Missing a Point, Chefina and Swaps
August Challenge 2020 Division 2
Chef Wars - Return of the Jedi, Chef and Wedding Arrangements, Smallest KMP, Chef and Linear Chess, Another Card Game Problem
September Challenge 2020 Division 1
Chefina and Swap, Chef and Trump Cards, Find XOR, Ada Matrix
July Cook-Off 2020 Division 2
Even-tual Reduction, OR-thodox Distinction
Code Ensemble (Rated for Division 2)
Cherry and Bits, Priya and AND, Help Martha
India