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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.
Not knowing how to solve a kata is your problem. Not an issue.
This should be given as a solution, not posted in the discourse section unless you are calling out something specific (if so, you provided no text to do so).