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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.
That's not a legit input, so you don't need to solve for it. Tic-tac-toe can't have a row (or in your case column) of 3 Xs and 3 Os since players alternate adding values. So you'd never get your board state.