Where can I check the theory of 6 handshakes VKontakte?

Question

In contact with

Somehow there was one beautiful service where you could check it conveniently and quickly. Tell me, who knows?

Answer 1

It is possible here .
In the parameters, specify the length of the chain (number of hands).
There was an article on Habré , a link from there.

Answer 2

There is an extension for Chrome: The Six Handshake Theory

Answer 3

checked - Indian national hut:
 

Answer 4

You can try here for VK vkchart.ru