The 2 to 4 players can place their counters on the squares of three rotatable rings - or they can turn the rings - all with the aim of forming windmill 'sails' of three counters . The player who has built one of these may then take any one of the other players counters. The player who has formed all his counters into sails may also take one counter. Winner is the one to capture most counters. - BoardGameGeek