December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
February Challenge 2019 Division 2
Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef, Chef and Magical Jars
June Challenge 2019 Division 2
Chef and Ingredients, Sum and GCD, Intersecting Paths, Chef and His Dish, Guddu on a Date, Lent Money, Chef and Proxy, Road Signs
July Challenge 2019 Division 2
Parity Again, Codechef War, Circular Merging, Minimum and Maximum, Chef and Mean
August Challenge 2019 Division 1
Guddu and his Mother, Dilemma
September Challenge 2019 Division 2
Chef and Interesting Subsequences , Chef and Good Subsequences, Easy Fibonacci
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Sell All the Cars, COVID Pandemic and Long Queue
May Challenge 2020 Division 1
Buying a New String, Triple Sort, Sorting Vases, Chef and Bitwise Product
April Cook-Off 2020 Division 2
Tower Counting, Matrix Decomposition, Lift Requests, Simple Operations
May Cook-Off 2020 Division 1
Chef, Chefina and Their Friendship, Roads in Chefland, Chefina on a Trip, Chefland Squads and the Army Chief
May Lunchtime 2020 Division 1
Absolute Min Max, Convert the String, Tree difference
July Challenge 2020 Division 1
Chefina and Swaps, Missing a Point
June Lunchtime 2020 Division 1
Maximum AND, Gold Mining, Square Submatrices
April Challenge 2021 Division 1
Worthy Matrix, Chef and Dice
China