Yea, Its alot harder kata than 7

Interesting Kata, thanks.

Easy and fun!

This seems super complicated for 7 kyu.

When your function has reduced the array to a single integer following these rules, it should return that integer.

13 is a single integer, you don't need to return a number with a single digit.

[1, 7, 0, 6, 1, 9, 0, 7, 1, 6, 0, 9, 0]
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[13]
13

Sorry. I should have written "the test result should be 1 not 13"

the description says:
"Numbers with no identical numbers preceding or following it returns a 1"
Therefore I would expect 13 gets reduced to 1.

I suppose, the following reduction is correct?
[0, 1, 1] -> [1, 2] -> [1, 1] -> [2] -> 2
Don't you agree?

No, 13 is correct. Not a kata issue. See https://docs.codewars.com/training/troubleshooting/#post-discourse.

A very poor report.

Why? as far as I see, the expected answer for this test is indeed 13?

the test result should be 2 not 13:
input: [1, 7, 0, 6, 1, 9, 0, 7, 1, 6, 0, 9, 0],
output: 13,

That test-case where 13 is a "Balanced" number should be better explained and an example with a 2-digit number added to description imo.

I notice a pattern on here where a lot of beginner katas (7kyu etc) are becoming near-untouchable for someone actually at that level, people complain about it, only to be countered by a bunch of 1 Kyu & 1 Dan folks with "it's actually correct to be 7kyu because... ==> <proceeds to list a bunch of concepts that are a solid 8-12 months away for someone who's actually 7 kyu>."

Even the author of this kata (see below) has estimated it to be at 4 Kyu FFS.