I couldn't find a link for the one I have made. I taught it from a pattern. There appears to be some variation on the idea. The pattern I used is called Peek-a-boo Twist from Vanilla House paterns. There is a tutorial if you will search on the name. This oneis a bit different from the Twist. Just search on Peek-a-boo block and you will find it.
It appear from the posting above that the one in the magazine is not the same as the Twist.