Key idea
Sankaku-waza and the Turnover
means triangular techniques. With prone, faces the head and encloses Uke’s head and left arm between the legs. Tori turns Uke onto the back while retaining the arm, then closes the triangle with one ankle behind the opposite knee. The right-arm example mirrors this. Keep an arm inside, never twist or lever the neck, and release immediately on submission or . The position can lead to a hold, elbow lock, or choke; it does not determine the finish by itself.