I didn't know you can put a function there! So cool.
Elegant solution.

First of all, thank you for replying, I will mark it as spoiler when needed.. I'm just a little new here.
Will the Node version get updated soon? Or would you advise that I'll change my solution?

Ok, solved it with the help of a friend who showed me I misunderstood the pattern.
Eventually I just chose [x,y,z] and started writing
[x,y,z]
[y,z,x,x]
[z,x,x,y,y]
[x,x,y,y,z,z]
.
.
Then it came to me that there's a pattern which finds the perfect run every time:

x,x,y,y,z,z => perfect
x,x,x,x,y,y,y,y,z,z,z,z => perfect
x,x,x,x,x,x,x,x,y,y,y,y,y,y,y,y,z,z,z,z,z,z,z,z => perfect

Still I believe that this should be 4kyu - but I'm no expert lol just a junior.

Yeah yeah of course lol a loop would collapse the universe.. I'm trying to create formulas but it's just too complicated. An extra hint will be wonderful :)

I've been trying to solve this for hours.. I don't wanna give up and see the solution just yet.
Would it be ok to ask for a little hint?

Thank you!!!

Wow!!! Beautiful.

Hi, does anyone know how to delete katas from my 'Unfinished' kata menu? I accidentally started a kata that was beyond my level, and now it's stuck on my unfinished list.