Squash — game racquets sports kind indoors. The game name (from English Squash) is connected with use in it concerning a soft hollow ball in diameter about 40 mm, and its primogenitor game in rackets (rackets or racquets — the American variant of the name) in which, unlike squash, rigid enough ball is used is considered. Game (single — two players; or the steam room — four), is conducted by special rackets on surrounded with four parties walls court.