Yes, with pleasure. Or i will try at least.

With your variable "value" you only check if all opened "(" parentheses were closed with ")", right?

But there some tests that might start with ")" e.g. ")()(". Thus your variable will have value 0, wich means that your method returns true. However you cannnot close ")" a non-opened "(" parentheses.

If you are coding in js you can use / console.log( parens ) / method to see all the tests.

Hope it was helpfull:)

found my mistake and completed this kata.

I think, it is just a pseudocode. He just described how he would implement it, without actually implementing the function.