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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.
You, and the kata's author/translator used a
solutionvar without declaring it (with var or let), that's the problem. I've fixed it in the testing part, I suggest you do that also in your code as good practice.Can't reproduce it, was it in javascript? Post your code as stated here: https://docs.codewars.com/training/troubleshooting#post-discourse