Squash is a racquet sport played by two (singles) or four players (doubles) in a four-walled court with a small, hollow rubber ball. The players must alternate in striking the ball with their racquet and hit the ball onto the playable surfaces of the four walls of the court. The game was formerly called squash racquets, a reference to the "squashable" soft ball used in the game (compared with the harder ball used in its parent game racquets).-Wikipedia-

Thanks. have you ever played squash?

Here's the link to the Russian wikipedia page: http://ru.wikipedia.org/wiki/%D0%A1%D0%BA%D0%B2%D0%BE%D1%88