All players keep playing, even after a loss, until a specified number
of rounds are complete. Each player begins the tournament with 0 points
and accumulates points in the following manner: a win is 1 point, a draw is
.5 points and a loss is 0 points. As the points build up, players are
automatically grouped with other players that have the same, or as close as
possible to the same, number of points. Therefore, players compete against
others with approximately the same strength as themselves.