Single In "Single in" challenges: concept and schedule

OK,, so I am not the only person confused by this thread, or is it a challenge? Oh well, nevermind...........

It's a link to my second post in this thread; it explains the basics. You can easily read up on everything you need to know.

N.B. I don't fully get the "nevermind" part, but am in no mood to speculate. So, maybe we should try this again.