Advantage(어드벤티지룰) scoring system( English(British) scoring system
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플레이어가 첫번째 랠리에서 서브권을 먼저 따낸 뒤(hand-out) 다음 랠리에서 이기면 점수가 올라가는 방식입니다.

The scoring system is based on a “serving” system, in which one must gain the serve to obtain a point. Having the serve is sometimes considered to be on “offense”. The opponent (who does not have the serve) is considered to be on the defensive and must score to win the serve and then score again to gain a point.

Points are awarded if, during the course of play:

The receiver fails to strike the ball before it has bounced twice
The receiver hits the ball out (either on or above the out line, or on the tin)
The receiver fails to hit the front wall with the ball before the ball has bounced
Stroke: where the receiver obstructs the server during the point (see “Interference and Obstruction”)
Where the server does any of these things, or fails to hit the serve in, then the players change roles and the receiver will serve the next point, but no points are awarded.

Games are usually played to 9 points (alternatively, the receiver may opt to call "set two" and play to 10 when the score first reaches 8-8). Competition matches are usually played to "best-of-five" (i.e., the player to win the most out of 5 games). As the title suggests, this scoring system is preferred in Britain, but also among countries with traditional British ties, e.g. Australia, South Africa, India.


Point-a-Rally scoring system(PARS, 랠리포인트 시스템, American scoring system)
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서브권 없이 각 랠리마다 점수가 올라가는 시스템입니다.

Alternatively, in the point-a-rally scoring system (PARS), points are scored by the winner of each rally, whether or not he or she served. Traditionally, PARS scoring was up to 15 points (or the receiver calls 15 or 17 when the game reaches 14-14). However, in 2004, the PARS scoring was reduced to 11 for the professional game (if the game reaches 10-10, a player must win by two clear points). PARS is now used on the mens Professional Tour, and the tin height has been lowered by two inches for the mens professional tournaments (these changes have been made in a hope to shorten the length of the rallies and therefore the match). The womens Professional Tour uses the original tin height, but started using the PARS to 11 scoring system as of July 2008. In the International game, club, doubles and recreational matches are usually played using the traditional British scoring system, but the European Squash Federation (ESF), World Squash Federation (WSF) and several national federations are now using PARS to 11 on a trial or permanent basis. Scoring systems and rules can be adapted subtly to accommodate shorter game time or multiple players. Confusingly, the British scoring is generally used for USSRA (United States Squash Racquets Association) matches. USSRA is now called U.S. SQUASH.