It is still possible to pass with one-liner using strings and regex. The shortcut checking test just makes it a tiny bit more complicated.

you are getting it wrong . Kata dose not want you to know the shotcut but dont want you to use it.
your code probably use strings to check for '[]' in original and other but one of the array is something like this [1,'[',']'],['[',']',1].

Yes, this one is older tho.

Isn't this kata asking the same as the one on the link below? I used the solution i had to the linked kata and it worked on this one because they are both asking the same despite being different levels supposedly.
https://www.codewars.com/kata/53db96041f1a7d32dc0004d2