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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.
Good luck! ;-)
NB: this is a clean solution, I have also a oneliner to simulate the game of life!
Edit: I made a cleaner fork, feel free to have a look
I just compared your code with the code I wrote and man... Such a LONG way to improve.