There has been some discussions on Reddit regarding the name of a particular technique and need some help looking at some proper classification. I've seen many different suggestions, amongst; seoi-nage, sode-tsurikomi-goshi, uchi-makikomi, koshi-guruma(!) and even kata-guruma, you name it.
Personally this looks like a variation of seoi-nage to me, as he is carrying uke on his back. I also cant see this particular performance being sode-tsurikomi-goshi, as he is jumping through the air, and not throwing around the hip? It is certainly a beautiful throw, but it looks a bit chaotic to classify and I need your help
In jûdô competition, especially modern day jûdô competition, many techniques occur that can be considered "chaotic throwing techniques". That means that a number of techniques and actions are assembled ot maximize chances to get someone on the ground on his back, without the whole of actions being a standard or often times and even repeatable technique.
The action shown in the clip does not classify under either gokyô terminology or under official habukareta-waza or shinmeisho-no-waza, but it is a historically described technique. It is called ushiro-guruma
, performed as makikomi.
The technique is described here: http://en.wikipedia.org/wiki/Ushiro_Guruma
and the technique is shown here: https://www.youtube.com/watch?v=8_NdrePNPGs
Although the technique was historically usually performed resembling uchi-mata where the opponent is thrown around the back towards the other side, the leg did not actually have to grab or make contact and was mostly used as a lever or counterweight. It is done that way in the clip too. There are many other techniques outside of the current 67 named Kôdôkan techniques that were once named or existed in Kôdôkan. Even in nage-no-kata there used to be several techniques that no longer exist under that name today.