Tukerii Sensei's principle active teaching student was also very involved with Tae Kwon Do Chung Do Kwan as originally taught to Allen Steen by Jhoon Rhee. Tukerii Sensei had spent some time between the end of WWII and his immigrating to the U.S. in Korea where he had contact with Tae kyon and Subakdo.
Tukerii Sensei became enamored with the Cha Hyon forms of General Choi Hong Hi. Their progression as a physical exercise was obvious to him, but he was surprised to find no bunkai being taught with them. Many of the moves and patterns of movements were very similar to Okinawan forms, from which they were probably derived. He began, almost as a passing whim, to develop bunkai for the forms. In time this turned almost into a passion. While minor modifications were made to some forms, and they are performed in a more Okinawan style than Korean one, they remain very recognizable to all Chung Do Kwan practitioners.
His senior student, Charles Bouton, taught both Tukerii Sensei's system and Tae Kwon Do in separate schools. Many of Bouton's students began to be students of both systems. While at present all of the black belt practitioners of Dai Ni Gojuryu are also practitioners of Tae Kwon Do, Chin Sook Hage Kwan, under Mr. Bouton or one of his students; it should not be misunderstood that the Tae Kwon Do Hyungs and the bunkai developed by Tukerii Sensei for them are part of the Dai Ni Gojuryu System.
Sensei did not necessarily buy into the idea that more is better in kata, in fact, he thought quite the opposite. Americans being western thinkers tend to view things and value things much differently than Orientals.
Sensei restructured the bunkai of the Korean Hyungs to take advantage of the increased number of forms. Instead of many different levels of bunkai for one form, he choose essentially three levels for each form. A basic punch-kick-block sport level, a grappling level, and a ki or pressure point level. Since so many types of moves are repeated though out the kata system he utilized the repeated moves in increasingly higher katas to teach what was taught originally at more advanced bunkai levels in the same form. Generally only kick, punch, block bunkai are taught at the gup level, but some introduction into the grappling level bunkai is introduced in the top 3 gup grades. Grappling bunkai level continues through the 4th Dan level, and ki / pressure point level bunkai are introduced at 3rd Dan level.
Tukerii Senei essentially designed the bunkai for the Dai Ni Gojuryu forms in the same fashion, and a similar teaching pattern is followed as with the Tae Kwon Do forms. It should be understood, that while all current Dai Ni Gojuryu Black Belt Practitioners are also practitioners of the Tae Kwon Do Chin Sook Hage Kwan system under Mr. Bouton, that Mr. Bouton has a number of students of the Allen Steen Tae Kwon Do lineage which do not practice the Dai Ni Gojuryu forms. There is also no requirement that the Dai Ni Gojuryu students practice the Tae Kwon Do system or seek rank in it. However, at present, there are no affiliated schools or clubs teaching the Dai Ni Gojuryu system that do not also teach simultaneously the Tae Kwon Do System.
The kata forms as pacticed in the Tae Kwon Do system
today , with the belt level at which they are required are:
The forms of the Dai Ni Gojuryu system with their
belt ranks are:
Basic Techniques without kata all ranks through 4th kyu
Sanchin, 3rd kyu
No new kata requirement at 2nd kyu
Nahanchi shodan, 1st kyu
Passai (Bassai), 1st Dan
Nikaju, 2nd Dan
Seiuchin, 3rd Dan
Nahanchi Nidan, Nahanchi Sandan, Sunseriu, 4th Dan
Saifa, Shishochin, Kururunfa, 5th Dan
Supraempi, Tzi Sanchin, Seisan, 6th Dan