OS: Windows 10 (10.0.19043)
Browser: Firefox (100.0)

Np. If you're interested in authoring kata, you should go through the documentation before your next attemps (if you didn't yet)

https://docs.codewars.com/authoring/kata

Cheers

That was my first kata, i'll unpublish this way, thanks for the advices, did it most for learning

I'd second B1ts on this, your kata is way to close to a lot of other kata. You should unpublish it.

Cheers

you still do not explain what are the condition of validity...
first digit, second digit, ok, then what?

Thanks, but I still have to vote unsatisfied. There's just too many ISBN validator type of katas already IMO :/

I'll add a example also for the 2nd digit, if the result is equal or greater than 10, it will be 0, fixing at the description

Fixed the typo, tried to describe better the task, I will add also the example for the second verification digit

Could you clarify how 2nd digit is calculated? Following similar method to first digit, I get wrong results.

Also, what if you get 10 as result? It's not 1 digit.

Hi,

• typo in the descirption:

  10 9 8 7 6 5 4 6 2
                 ^
  

• the task isn't properly described ("return true if...")

• the way the verification has to be done isn't properly described either (that's actually close to it IS "not understandable"...) => what's the full number used as example in the description? what's "first digit"? what's "second digit"? ...?

Cheers