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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.
Your handling of columns is invalid. In following test case:
column 7 is invalid, but your solution returns True.
Resolving as not a kata issue.
Yes I did. I got the board using print statement. On running locally, it sucessfully returns false.
Do you know the input of failing test case? Did you try to recreate it locally?
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