February Challenge 2019 Division 2
Guess It Right, Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, (Challenge) Chef with Orchestra in the Kitchen, Art of Balance, Deputy Chef, Manhattan Rectangle
March Challenge 2019 Division 2
Chef and Number Game, Chef and a Beautiful Digit
October Challenge 2019 Division 2
Even Edges, Phone Prices, Operations on a Matrix, Array Modification, Chef and Maximum Star Value, Missing Number
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise, Leaked Answers (Challenge)
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