Mark Dyson, the founder of Deptford Three Sided Football Club (D3FC), told me the game taking place in front of my eyes was not as bizarre as it seemed. “The rules are very simple – and there are only three of them.” They are:
1. There must be three teams on the field at the same time
2. The winning team is the one that concedes the fewest goals
3. The ball must be round
Danish situationist, artist and philosopher Asger Jorn came up with the idea of three sided football. “Jorn felt that the dualistic antagonisms of the East/West political dialectic could be ameliorated through the introduction of a tertiary power which would engender a rotational series of shifting alliances to neutralise the tension”.Further details at The Guardian and at the club's website.