Which is also a fair description of Enshin Karate!

Also see the Sabaki Challenge which is an annual tournament.

Rules: Hand or elbow strikes or head butts to the neck and face area are not permitted. Kicks and strikes to the groin are not permitted. All kicks to the legs and sweeps to the legs are allowed, with the exception of a direct blow to the front of the knee.

*A fighter may grab his opponent's shoulder or gi (of arm or leg) for three seconds only while executing a technique. Hand must release hold after three seconds. A fighter may not encircle the opponent's leg with one arm, or hold the leg up with two hands. When grabbing from the front with two hands, both hands must reach from the same side of the opponent's body. Encircling the opponent's neck or torso from the front with two hands to pull him into a technique is not permitted. If both fighters are grabbing each other, creating a stalemate, the referee will break them apart immediately. *