Your random tests always expect False No, actually, this solution works because the reference is broken, but the random tests still expect True very rarely.

Thank you.

It feels like cheating 😂

Fixed.

If you've solved the kata, you can look at Preloaded by forking a solution and looking at the tab.

Just in case you think Preloaded is hidden.

It indded seems to be an issue. Expected and actual are misassigned and mixed up in tests. It would also mean that reference solution is incorrect, but I did not check it because it's in preloaded smippet.