It was not my intention to critize the author.
Although I appreciate the potential praise, it was rather meant in a relative way.
I had a similar experience with another Kata and I just found out you wrote it too.
It seems you have an excellent talent for writing Kata's which are really difficult in many languages and are easy in C++ ;).
Thanks for making the Katas, appreciated them nevertheless!

In C++ this can be solved by using a double loop, so 7 kyu or 8 kyu would be more appropiate.

This can't be voted up for being best pratice, it should rather be voted up for being cheating