May Challenge 2018 Division 2
Minimum Deletions, Mighty Friend, Dibs on Fibs, Xor Again
December Challenge 2018 Division 2
Chef and Meatballs, Chef and Interactive Contests, Chef and An Ideal Problem
January Challenge 2019 Division 2
Lucky Number Game, Fancy Quotes
February Challenge 2019 Division 2
Chef and Magical Jars, Deputy Chef
April Challenge 2019 Division 2
Maximum Remaining, Friend or Girlfriend
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Lent Money, Guddu on a Date, Chef and Ingredients, Sum and GCD
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control
July Challenge 2020 Division 2
Missing a Point, Chef and Strings, Chef and Card Game, Ada King
March Challenge 2021 Division 3
College Life 4, Consecutive Adding, Paparazzi Gennady
April Challenge 2021 Division 3
Worthy Matrix, Destroy the EMP Chip, Chef and Dice
