February Challenge 2019 Division 2
Chef and Secret Ingredients, Appy and Contest, Deputy Chef
March Challenge 2019 Division 2
(Challenge) Interleaving Strings
September Challenge 2019 Division 2
Chef and Good Subsequences, Easy Fibonacci, Chef Designed a Network, Chef and Interesting Subsequences
September Lunchtime 2019 Division 2
Chef Feeds Cats, All Substrings
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Chef and String, Chef and Price Control
Uruguay