December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Deputy Chef
March Challenge 2019 Division 2
Chef and Number Game, Chef and a Beautiful Digit
April Challenge 2019 Division 2
Friend or Girlfriend, Fencing, Maximum Remaining
May Challenge 2019 Division 2
Ada Rooks 2, Matches, Reduce to One, Where to Build the Roads
June Challenge 2019 Division 2
(Challenge) SnackDown 99, Sum and GCD, Chef and His Dish, Chef and Ingredients, Lent Money, Chef and Proxy, Road Signs, Guddu on a Date
July Challenge 2019 Division 1
Hit the Coconuts, Guess the Prime!, Parity Again, Codechef War, LOVEMUFFIN, Circular Merging, Minimum and Maximum, Chef and Mean
August Challenge 2019 Division 1
Maximize an Expression, Dilemma, Guddu and his Mother
August Lunchtime 2020 Division 1
Game on a Strip, Alien Invasion
January Challenge 2021 Division 2
Chef and Ants, Watching CPL, Fair Elections
June Challenge 2021 Division 2 (Unrated)
Minimum Dual Area, Shortest Route, Bitwise Tuples, Bella ciao, Summer Heat, Minimum Subtree Cover
August Challenge 2021 Division 2 (Unrated)
Problem Difficulties, Olympics Ranking
India