How can I get this permalink structure?

Question

http://qz.com/206259/a-brief-history-of-soccer-in-the-us-and-why-it-might-finally-have-found-its-place-in-the-american-psyche/

qz.com runs on wordpress and uses a unique permalink structure I've never seen before.

Wordpress can use sitename.com/?p=123 (ie. post ID) or various other structures like date - d/m/post-name etc.

What qz.com seem to be doing is using the ID as the base url (guessing) then the post ID's slug after it, how are they doing this?

Answer 1

After doing a little reading I found you can do it this way. /%post_id%/%postname%/