Abstract: Disclosed is a method and apparatus for playing a game with a stock of substantially triangular playing pieces, each playing piece having at least two playing edges of equal length and bearing indicia associating each of the at least two edges with a group. The indicia may associate each playing edge with a group defined by a colour or tone, or with a group defined by a representation of an animal or defined in another way. Where the group is a colour or tone the indicia may take the form of bands of colour or tone running along a playing edge. The playing pieces may have each playing edge associated with a different group, or may have two or more playing edges associated with the same group. The object of the game is for teams to form polygons by laying playing pieces in the playing area according to the rules of the game.

Abstract: Aromatic polyethers are made by boiling an organic sulphoxide or sulphone solvent containing i) an equimolar mixture of a bisphenol and an aromatic dihalo compound or ii) a halophenol, in which dihalo compound or halophenol the halogen atoms are activated by ortho or para --SO.sub.2 -- or --CO-- groups, and an alkali metal carbonate with removal of the water produced by the reaction by distillation in the absence of an azeotrope forming solvent.