A game of alliance and betrayal
It seems like a typical Sunday afternoon game of football, but there’s a big difference – there are three teams on the pitch.
Deptford 3S Football Club is playing Philosophy Football FC and Strategic Optimists FC, at the same time.
This leads to all sorts of tactical subtleties, as BBC News discovered at a match in New Cross in London.
Video journalists: Dan Curtis and Tom Beal.
First published by BBC News Magazine