Duo has the two members of a team merely demonstrate self-defense techniques against grips, strangle holds, punches, kicks and attacks with stick or knife. Fighting, on the other hand, consists of true combats in the different weight classes.

Tatami mats cover the floor of the NSYSU Gymnasium, which converts into a martial arts temple for several days: it is the venue assigned to karate as well. Ju-jitsu is relatively new to Taiwan. But The World Games 2009 Kaohsiung allow the spectators to watch the very best jutsukas in action.

Carsten Ettrup (DEN) sums up the essence of fighting in ju-jitsu: 'In these combats you are simply trying to outsmart your opponent. After all, he knows the same techniques you do!'

 Ju-jitsu at The World Games 2005