December Challenge 2018 Division 1
Max and Electrical Panel, Directing Edges, Chef and Interactive XOR, Chef and Meatballs, Chef and Interactive Contests, Chef and An Ideal Problem, (Challenge) Delete DAG
October Challenge 2018 Division 2
Chef and Serves, Chef and Circles, Byte to Bit, Chef and Surprise Chessboard, Minimize Digitsum, Beautiful Bricks, Appy and Balloons
Encoder (Rated for Division 2)
Knight Chess, Second Largest Element, Old Farmer, Paint the Wall
January Challenge 2019 Division 1
Fancy Quotes, A Pizza Slice, (Challenge) Chef and Matching Game, Chef and Modulo Game, Lucky Number Game, Partition the Graph, Different Neighbours, Yet Another Problem About Sequences, Distinct Pairs
February Challenge 2019 Division 1
Art of Balance, Maximize the Tax, Deputy Chef, (Challenge) Chef with Orchestra in the Kitchen, Yet Another Tree Problem, Xor Decomposition, Chef and Secret Ingredients, Chef and Magical Jars, Guess It Right, Manhattan Rectangle, Appy and Contest
January Challenge 2020 Division 1
Doofish Matrix, (Challenge) Building Anthills, Chefland Army, English, Chefina and Prefix Suffix Sums, Doraemon, Chef and Dynamo
SnackDown 2021 - Online Qualifiers
Lucky Number, Maximum Number Of Distinct Elements
