Loading collection data...
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.
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this is insane
this is magic
There is no test for rule 2 and 3!
I was able to sumbit without having these validations in my solution...
Untested rules:
Rows may only contain integers: 1..N (N included)
Columns may only contain integers: 1..N (N included)