In the tournament, anyone who comes into contact outside of the ring, is knocked out for more than ten seconds (which is counted by the commentator), or gives up, automatically loses. The tournament forbids any use of weapons(although natural weapons, such as bear claws, are allowed). Poking someone in the eyes or hitting them in the groin is also not allowed. The most important rule is that killing the opponent is not allowed. Disobeying any of these rules results in disqualification from the tournament. The tournament has two parts: the preliminaries and the tournament itself, although this changed significantly in the later tournaments. The preliminaries are held indoors and without an audience. In the preliminaries, all the contestants are divided in several groups, usually eight. These eight groups fight in mini-tournaments with a one-minute time limit for each match (matches that last longer than 6 posts [each] are decided by points). The sixteen winners, one of each group, move on to the actual tournament. The winner of each fight goes on to fight with the winner of the other fights, with a tree diagram showing the order of the fighters, going up on the aforementioned levels, ultimately leading to the final bout to determine the champion.