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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
That's very bizarre. I wrote this years ago. Maybe Jake Hoffner or someone at Codewars staff could take a look? https://www.codewars.com/topics/bug-reports
I have also stuck with python on aprox 70 test :-(
There are 100 random tests in Python which go up to a max grid size of 100x100