The system is divided in 12 categories according to weight and sex (male categories: -56kg, -62 kg, -69kg, -77kg, -85kg, -94kg, +94kg; female categories -49kg, -55kg, -62kg, -70kg, +70kg).
The actual combat is divided in three parts: Part I sees the Jutsukas involved in distance combat and controlled attacks with arms and legs. Once a grab has been made, the fight enters Part II and hits are no longer allowed. The Jutsukas try to bring one another down with various throwing techniques. Points are given according to how 'clean' and effective the actions are judged. Once down on the tatamis (mats), the match enters its Part III. Here points are given for immobilization techniques, controlled strangulations or levers on body joints that bring the opponent to yield. The winner is the Jutsuka who has accumulated most points during the fight or performed a “perfect technique in all three Parts” got scored by Ippon. In this case the fight will be ended before time ran out. This type of competition requires timing, agility, strength and endurance
Points and Penalties must be given by the majority of the referees.
a. The following points can be given in Part 1:
(Punches, strikes and kicks must be applied with Hikite / Hikiashi, in good balance and control)
1. An unblocked punch, strike or kick (Ippon, 2 points)
2. A partly blocked punch, strike or kick (Wazaari, 1 point)
b. The following points can be given in Part 2: (Throws, take downs, locks and strangulations)
1. Strangulations and locks with tapping (Ippon, 2 points)
2. A perfect throw or take-down (Ippon, 2 points)
3. A not perfect throw or take-down (Wazaari, 1 point)
c. The following points can be given in Part 3: (Floor techniques, locks and strangulations)
1. Strangulations and locks with tapping (Ippon, 3 points)
2. An efficient control announced as “Osae-komi” during 15 seconds. (Ippon, 2 points)
3. An efficient control announced as “Osae-komi” during 10 seconds. (Wazaari, 1 point)
Penalties/ Forbidden acts
a. “Light forbidden acts” will be punished by “Shido” and the opponent gets 1 Wazaari. The following actions count as light forbidden acts:
1. If one or both contestants show passivity or minor technical infringements.
2. “Mubobi” – if a contestant brings himself in dangerous situation
3. To deliberately go outside the fighting area with both feet.
4. To purposely push the opponent outside the fighting area.
5. To purposely deliver kicks or punches after the beginning of Part 2 and 3.
6. To make any further actions after a stop of the match has been announced.
7. To deliver punches, strikes and kicks to the legs.
8. To make locks on fingers or toes.
9. To make cross-legged locks around the kidneys and stretch the legs.
10. To make a strangulation with bare hands / fingers.
11. If a contestant is wasting time on purpose (by arranging the Gi, by taking the belt off, taking off the gloves, comes unprepared to the mat etc.)
c. A “Forbidden acts” will be punished by “Chui” and the opponent gets 2 Wazaari:
1. To make attacks like kicking, pushing, punching, hitting the body of the opponent in a hard way.
2. To disregard the MR’s instructions.
3. To make unnecessary calls, remarks or gestures to the opponent, referees, the secretariat or to anyone else.
4. To make an uncontrolled action, such as roundhouse punches and kicks, which are not stopped even if they miss the opponent, and after a throwing-technique the opponent is not able to continue immediately.
5. To make straight punches or straight kicks towards the head.
d. In case of two “forbidden acts” the fight will be lost by “Hansoku-make”.
e. The following actions count as a “heavy forbidden act”:
1. To apply any action which may injure the opponent.
2. To throw or try to throw the opponent with any lock or strangulation.
3. To make any locks on the neck or spinal column.
4. To make any twisted locks at the knee or foot.
f. The second time a competitor looses by Hansoku-make in a tournament, he is expelled from the rest of the tournament.
g. If a contestant shows unsportsmanlike behaviour after a fight, the referee crew of the tatami unanimously decide that the competitor should be expelled from the rest of the tournament. The expelled contestant loses all matches he had already won, including the medals.
If both contestants will be punished by Hansoku-make, the match will be repeated.