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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.
So I'm still very much a rookie, but I seriously doubt my code should have worked. As far as I can tell I'm only checking 5 out of 9 3x3 grids.
Good test of basic methods knowledge, not a 5kyu challenge though. Might be better if there was some way to ban isalnum usage.
I'm doing this in Python and am passing all of the tests. I'm also testing my code in IDLE, and it works fine. However when I attempt to submit my solution I'm getting an error: None should equal 0. In every other tool I've tried I get 0, no idea where the None would be coming from. Any way to complete this Kata?