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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.
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Too easy kata, there are 7kyu and 8kyu more difficult tasks.
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Yes, sets are good when it comes to such tasks, cool solution!
Good code, cool!
Very good solution, briefly and clever!