Code Wars it's not only about difficult algorithms and rank position, but also it's about knowing the languages, learning them and having fun. So in my opinion this kata, how easly it is, it's good for begginer, so that they can learning something about coding patterns

@gonX: as you said, you also learned something.

I think it's good for beginners. Persuade them to read some about patterns. Also you will be able to see different solutions.