About the technical challenges

I understand that i can solve problems from codeabbey page, but it is not clear for me what do you mean when you say that they have to be unique

Choose a language wich doesn’t have already a solution in the repo, look at the files extentions.

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This is addressed in the submission guide.

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@previous-bell If this topic is solved, please mark it as such
by checking the solution chart at the bottom of the post you
consider that properly answers your question.