October Mega Cook-Off 2018 Division 2
Ada and the Staircase, Binary Nim 2, Pumping Water
December Cook-Off 2018 Division 2
Camp Or Not, Yalalovichik Numbers
October Challenge 2018 Division 2
Chef and Circles, Byte to Bit, Chef and Serves, Chef and Surprise Chessboard, Minimize Digitsum, Beautiful Bricks, Appy and Balloons
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Magical Jars, Chef and Secret Ingredients, Art of Balance
February Cook-Off 2019 Division 1
Max Range Queries, Chef and Secret Password, Chef and Party
March Challenge 2019 Division 1
(Challenge) Interleaving Strings, Cheating on Queue, Chef and Soccer, Yet Again a Subarray Problem
April Challenge 2019 Division 1
Friend or Girlfriend, Maximum Remaining
August Challenge 2019 Division 1
Guddu and his Mother, Dilemma, Maximize an Expression
January Challenge 2020 Division 1
Chef and Dynamo, (Challenge) Building Anthills, Chefland Army, English, Chefina and Prefix Suffix Sums, Doofish Matrix, Doraemon
March Cook-Off 2020 Division 1
Mysterious Sequence, Maximize Letter Beauty, Escape the Tree
April Cook-Off 2020 Division 1
Tower Counting, Simple Operations
India