Seidokaikan
| Focus | Striking |
|---|---|
| Hardness | Full-contact |
| Country of origin |
 Japan
|
| Creator | Kazuyoshi Ishii |
| Parenthood | Kyokushin |
| Official website | http://www.seido.co.jp/ |
Seidokaikan (正道会館?) is a traditional full contact karate derived from Kyokushin by Kazuyoshi Ishii. Seidokaikan organized the first professional full contact karate tournament named the Karate World Cup. The Karate World Cup had special extension rounds, if the judges decision was deadlocked after an extension round, the rules then allowed face strikes with fighters donning boxing gloves (kickboxing).
In 1981, Kazuyoshi Ishii established his own style of karate forming the International Practical Karate Federation Seidokaikan and became the Kancho (Grandmaster) of Seidokaikan based in Osaka. Kancho Ishii's top student at this time was Takeo Nakayama who had achieved fame by taking second place in the 1977 Kyokushin All-Japan tournament as a green belt.
In 1983, Kancho published a karate technical manual entitled "Full Contact Seido Karate". The following month the first of a four-part educational video series "Practical Seido Karate" (the first of its kind in Japan) was produced. In 1991, Kancho Ishii's "Katsu Tame no Karate" (Winning Karate) book was published with a companion video.
Seidokaikan can be confused with Seido, the World Seido Karate Organization, a traditional non-contact karate style with a similar name established in 1976 by former Kyokushin karateka Tadashi Nakamura and also with Seidokan Karate Kobudo, a traditional karate style established by Shian Toma in 1984.
In 1982, Seidokaikan held its first All-Japan Knockdown Open tournament. This initial event attracted over 3,500 people to the Osaka Prefectural Gymnasium. Over the next several years the Seidokaikan All-Japan Open tournament had become a showpiece in Western Japan and by 1989 the tournament was attracting over 8,000 fans and brought fighters from more than 20 styles of karate.
In 1988, at the 7th All-Japan Knockdown Open tournament, new rules were used for the first time allowing face strikes wearing boxing gloves for extension rounds.
In 1990, Dutch Kyokushin fighter Peter Smit competed in the 8th All-Japan Knockdown Open tournament. In June 1991, 4,500 people crowded into Tokyo's Yoyogi Hall to watch a 5 on 5 challenge match between Seidokaikan and World Oyama Karate with Willie Williams competing.
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