Jiu-Jitsu Ne-Waza (ground technique) is one of the main Ju-Jitsu (and Judo) bases. The fight of two opponents starts standing. Punches and kicks are not allowed. After starting the fight the referee interrupts only in critical moments, so normally the main part of the fight takes place on the ground. It is the goal to win by submission with a lock on the joints or strangulation. During the time of 6 minutes it is possible to gain points for throws, take-downs, controlling positions and actions to gain an advantage in the fight.
The Ne-Waza Ju-Jitsu is extremely tactical and sometimes described as the chess game of martial arts.