Badminton points calculation system

1.Classical system
This system is valid until 2002 before it was replaced with 5x7 points system. Prevailing system is a system to move the ball or in other words only the players / pairs who perform services on which to make points.
A / a pair of players will win the game when you've won two sets of games. With a points system to calculate each set are as follows:

For the party the men's singles and doubles all parties
    * One set consists of 15 points.
    * In case of 13 same position, the player / pair who first reached number 13 will determine whether there is juice 5 (the game will end at point 18) or not (the game still ended in points 15).
    * In case of 14 same position, the player / pair who first reached number 14 will determine whether there is juice 3 (the game will end at point 17) or not (the game still ended in points 15).
    * When the juice has taken a decision on the same position 13, then no additional points if there is the same position 14.

For the women's singles party
    * One set consists of 11 points.
    * If there is the same position 9, the first players to reach the number 9 will determine whether there is juice 3 (the game will end at point 12) or not (the game still ended in points 11).
    * If there is the same position 10, the first player to reach number 10 will determine whether there is juice 2 (the game will end at point 12) or not (the game still ended in points 11).
    * When the juice has taken a decision on same position 9, then no additional points if there is the same position 10.

2.5x7 points system
This system is only valid from January to August 2002.
Prevailing system is still the system to move the ball or in other words only the players / pairs who perform services on which to make points, but unlike classical systems, a / a pair of new players will win the game when it has won a three set game.
There was no difference in the calculation system for both single or double or to a son or daughter. With a points system to calculate each set are as follows:
    *  One set consists of 7 points.
    *  If there is the same position six, the player who first reached number 6 will determine whether there is juice 2 (the game will end at point 8) or not (the game still ended in points 7).

3.Back to the classical system
Starting August 2002, the calculation system back to the classical system with a few changes:
For the party the men's singles and doubles all parties

    * One set consists of 15 points.
    * In case of 14 same position, the player / pair who first reached number 14 will determine whether there is juice 3 (the game will end at point 17) or not (the game still ended in points 15).

For the women's singles party

    * One set consists of 11 points.
    * If there is the same position 10, the first player to reach number 10 will determine whether there is juice 2 (the game will end at point 12) or not (the game still ended in points 11).

4.3x21 rally point system
This system came into effect in May 2006. There was no difference in the calculation system for both single or double or to a son or daughter.
Prevailing system is a system of rally points, or in other words any one player makes a mistake, the opponent immediately earn points.
A / a pair of players will win the game when you've won two sets of games. With a points system to calculate each set are as follows:
    * One set consists of 21 points.
    * In case of 20 same position, will automatically occur juice 2 (the game will end at point 22).
    * Juice 2 will be automatically applied when then happens again the same position (the game will end up with 2 points difference).
    * In case of 29 same position, no longer apply the juice (the game will end at point 30).