It's a good practice to write comments in English.

Very interesting kata!

Well, I solved this kata using recursive algorithm and...what's wrong with time complexity. I mean it was supposed to be a pain to make it in 12 sec limit, but it takes a few milliseconds. I'm not bragging, just a bit shocked. Anyways, thanks for the exciting kata:)

Very cool kata! Now I know how tournaments are created:)

What a wonderful kata to solve! For me, it was not about the difficulty, but the interesting way to solve. So, I give my credits to the author for the awesome idea:)

Very interesting kata. It took some time, but it was a pleasure. Thanks to the author:)

One of the coolest kata I've ever worked on! Thanks:)

Sorry for late response. Thank you, that helped a lot:)

Could somebody explain to me how does it work?

very clever

Thanks for the nice kata:)

Thanks for this awesome kata!

This is a good and challenging kata, but i think it deserves 4kyu. Anyways, thanks for interesting experience:D

Nice kata. Not actually hard, but very interesting:)