Thanks for the feedback!
For me all test cases were succesfull but validator 5 failed.
The issue was that I was not handling a case with the wrong tile at the end of the row correctly. Maybe this will help someone else one day
You can send your code, I might try it and send back what’s wrong.
Thanks for your offer! Like I mentioned I was able to figure it out, apparently validator 5 has a wrong tile at the end of the row and there’s not case which has this. My code was not handling a wrong tile at the end of the row correctly.