The "Katame-no-Kata" were established during 1884 and 1885, in succession to the "Nage-no-Kata". They consist of five representative techniques each from the Osaekomi-waza, Shime-waza and Kansetsu-waza, the aim being the mastery of the theoretical basis for executing and evading each technique. In 1882, Master Jigoro Kano founded Kodokan Judo, establishing the Randori method based on Nage waza and Katame waza. Since then, theoretical research has lead to the establishment of numerous new techniques. Together, the Nage-no-Kata and the "Katame-no-Kata" from the "Randori-no-Kata," the practice of which helps in the understanding and mastery of the theory behind Randori techniques.