Here are stills of Doshu executing yokomenuchi tenshin (uchimawari) taisabaki:

Doshu: tenshin taisabaki

Doshu clearly steps towards Uke, not away on tenshin, and has both arms up like Osawa Sensei.

Continued

Continued

Continued

Here is the video from which these stills were taken1:

1. Uploaded by aikikaimedia [↩]

Waka Sensei demonstrates fundamental taisabaki with Japanese terminology used by Aikikai1:

Tenkan (soku):

Tenkaisoku:

http://www.youtube.com/watch?v=BIEfofgqM70

Tenkan (soku) and then tenkaisoku:

Ayumiashi:

Okuriashi:

Ayumiashi and tenkaisoku:

Ayumiashi and tenkan (soku) OR kaiten2:

1. Uploaded by aikikaimedia [↩]
2. What we call this in Canada [↩]

Doshu performing morotedori omote and ura1:

Omote:

Ura:

1. Uploaded by aikikaimedia [↩]

For techniques like katadori ikkyo ura and nikyo ura, Tori slides to the outside and enters while covering Uke‘s shoulder-grabbing hand. Many shihans do this, especially Namba Sensei makes very clear movements.

Tori doesn’t slide to the outside and retract back or cut down on Uke‘s arm. I’ve noticed this would leave Tori vulnerable to the forward momentum of Uke. Not only that, Uke‘s arm is strongest when he has it in front of him. That is why when Tori moves to the side and enters, Uke‘s arm is taken out sideways and is hardly usable.

I’ve written about this before when I talked about Doshu’s triangular sabaki.

Doshu: Katadori nikyo ura

Doshu’s seminar in Montreal, 2010:

Seki Sensei executing shomenuchi iriminage omote kuzushi1

1. Uploaded by conexaoaikido [↩]

Seki Sensei explaining his method of katatedori ikkyo omote from about [1:36]1

Here are stills highlighting Seki Sensei’s taisabaki on the uchimawari taisabaki. The color has been corrected in processing.

Seki Sensei about to do another katatedori ikkyo

Continued

Continued

Notice that Seki Sensei has turned almost 180 degrees.

1. Uploaded by conexaoaikido [↩]

As a follow-up to this entry, I slowed down Seki Sensei’s ikkyo omote taisabaki to 10% of normal for a few instances of the waza across different years. I’ve noticed his inner leg tends to be the support leg while he redirects Uke at a different angle to incidence. In one clip his outer foot hovers above the mat for a few moments while Uke is beginning to fall.

Here is a high camera angle view of Seki Sensei teaching sumi-otoshi. He teaches that we don’t need to step deeply behind Uke, but rather extend him straight down. He shows both how to do sumi-otoshi and how not to do sumi-otoshi.1

1. Uploaded by conexaoaikido [↩]

Revisiting ikkyo omote and ura by Seki Sensei and some other shihans, there’s a possibility they might be the same technique. Here is an entry to illustrate this with stills. This video below is omote, but if Sensei were to step back after cutting down, it could easily be ura.

Here is a slowed-down version of a demonstration from this entry.

Here is a compilation of a few of Seki Sensei’s shomenuchi ikkyo executions.

Shomenuchi Kotegaeshi by Seki Sensei1

1. Uploaded by conexaoaikido [↩]