February Challenge 2017
Chef and His Apartment Dues
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging
January Lunchtime 2018
Chef and Game with Sequence
March Challenge 2018 DIV 2
Chef and Easy Problem, A Big Sale, Mix the Colors, Chef and Glove, Minion Chef and Bananas
March Cook-off 2018 Division 2
Chef Judges a Competition, Chef Goes to the Cinema
June Cook-Off 2018 Division 2
Archi and Comparsion, Good Permutations
July Cook-Off 2018 Division 2
Encoding Message, OR Matrix
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again
Quick Code (Rated for Division 2)
Immortal Frieza, Majin Vegeta
January Challenge 2020 Division 2
Chef and Dynamo, Breaking Bricks
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
July Challenge 2020 Division 2
Chef and Card Game, Chef and Strings
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