Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
It was played on several rounds. The first three ones were a league where teams tried to get as much points as possible. Every victory sums up 3 points, but if the loser team attains 50 jocs they sum up 1 point. The 4 teams who had the biggest scorings got qualified to the one-match semi-finals. The best two teams played a final match.