Section 3 of koryu no kata dai yon is called Oyo Waza
Oyo Waza literally means “application techniques”, which means you are using basic techniques in different attacking situations. You are required to “adapt” the basic technique without changing the concept and principles.
Section 3 – Techniques 1-4
These waza don’t use a lock. The first 2 waza are using an atemi waza, an application of gyakugamae ate. The next 2 waza are using a wrist-grip.
Section 3 – Techniques 5-8
A lock is applied to perform a throw.
Section 3 – Techniques 9-11
Using “tenshikei” makes these throws an efficient aikido waza.
Koryu dai yon a basic training tool
From a technical point of view, koryu dai yon has a different view on aikido waza as promoted in 17-hon no kata or 17-hon no kata in Tomiki’s aikido method. Mostly it is associated with the Kodokan kuzushi concept. But looking at the content of this kata, the relationship with Daito Ryu is more evident. The use of the hand (tegatana) is the most important aspect in the kata. Examination of Daito Ryu Aikijujutsu waza, the use of Aiki-age and aiki-sage are important and basic skills. Without these skills, other waza are not efficient.
When Kenji Tomiki was involved in the creation of Kodokan Goshin Jutsu kata, he visited Renshinkan Daito Ryu Aikijujutsu dojo headed by Maeda Takeshi, student of Matsuda Toshimi. Matsuda sensei was a student of Takeda Sokaku. As a sidenote, founder of Hakko Ryu Aikijujutsu was a member of the Matsuda Daito Ryu lineage.
Tomiki Kenji sensei, a student of Ueshiba Morihei and Jigoro Kano, asked Maeda to see the real Daito Ryu.
By examining the Renshinkan syllabus, the resemblance with Koryu dai yon is remarkable. The use of “tegatana” is from the beginning a basic skill.From a BAB movie: Daito-ryu Aiki Jujutsu Renshinkan Part.1 Zadori 〜Aiki in sitting position
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