# 45th Judan

The 45th Judan was held from May 11, 2006 to April 25, 2007. The current sponsor is Sankei Newspapers. The holder is Cho Chikun, and the challenger is Keigo Yamashita for the second time in a row. Hideki Komatsu, Norimoto Yoda, Kimio Yamada, Hideo Otake, Koichi Kobayashi, Kim Shushun, Naoki Hane, and Takeshi Sakai qualified through preliminary tournaments. The rest of the players were given spots automatically.

## Preliminaries

| Semifinals | Semifinals | Semifinals | Finals | Finals | Finals |
| Shigeaki Yokota 9 dan | Shigeaki Yokota 9 dan | 0 | | | |
| Hideki Komatsu 9 dan | Hideki Komatsu 9 dan | 1 | | | |
| Hideki Komatsu 9 dan | Hideki Komatsu 9 dan | 1 | Hideki Komatsu 9 dan | Hideki Komatsu 9 dan | 1 |
| | | | Yoshio Ishida 9 dan | Yoshio Ishida 9 dan | 0 |
| Yoshio Ishida 9 dan | Yoshio Ishida 9 dan | 1 | Yoshio Ishida 9 dan | Yoshio Ishida 9 dan | 0 |
| Toshiya Imamura 9 dan | Toshiya Imamura 9 dan | 0 | | | |
| Semifinals | Semifinals | Semifinals | Finals | Finals | Finals |
| Norimoto Yoda Gosei | Norimoto Yoda Gosei | 1 | | | |
| Hideyuki Sakai 7 dan | Hideyuki Sakai 7 dan | 0 | | | |
| Hideyuki Sakai 7 dan | Hideyuki Sakai 7 dan | 0 | Norimoto Yoda Gosei | Norimoto Yoda Gosei | 1 |
| | | | Kenichi Mochizuki 6 dan | Kenichi Mochizuki 6 dan | 0 |
| Shinichi Aoki 9 dan | Shinichi Aoki 9 dan | 0 | Kenichi Mochizuki 6 dan | Kenichi Mochizuki 6 dan | 0 |
| Kenichi Mochizuki 6 dan | Kenichi Mochizuki 6 dan | 1 | | | |
| Semifinals | Semifinals | Semifinals | Finals | Finals | Finals |
| Yo Kaei 8 dan | Yo Kaei 8 dan | 0 | | | |
| Kimio Yamada 9 dan | Kimio Yamada 9 dan | 1 | | | |
| Kimio Yamada 9 dan | Kimio Yamada 9 dan | 1 | Kimio Yamada 9 dan | Kimio Yamada 9 dan | 1 |
| | | | Rin Kono Tengen | Rin Kono Tengen | 0 |
| Rin Kono Tengen | Rin Kono Tengen | 1 | Rin Kono Tengen | Rin Kono Tengen | 0 |
| Kunihisa Honda 9 dan | Kunihisa Honda 9 dan | 0 | | | |
| Semifinals | Semifinals | Semifinals | Finals | Finals | Finals |
| Noriyoshi Yamada 9 dan | Noriyoshi Yamada 9 dan | 0 | | | |
| Kana Mannami 3 dan ♀ | Kana Mannami 3 dan ♀ | 1 | | | |
| Kana Mannami 3 dan ♀ | Kana Mannami 3 dan ♀ | 1 | Kana Mannami 3 dan | Kana Mannami 3 dan | 0 |
| | | | Hideo Otake Honorary Gosei | Hideo Otake Honorary Gosei | 1 |
| Ryu Shikun 9 dan | Ryu Shikun 9 dan | 0 | Hideo Otake Honorary Gosei | Hideo Otake Honorary Gosei | 1 |
| Hideo Otake Honorary Gosei | Hideo Otake Honorary Gosei | 1 | | | |
| Semifinals | Semifinals | Semifinals | Finals | Finals | Finals |
| Koichi Kobayashi Honorary Kisei | Koichi Kobayashi Honorary Kisei | 1 | | | |
| Naoto Hikosaka 9 dan | Naoto Hikosaka 9 dan | 0 | | | |
| Naoto Hikosaka 9 dan | Naoto Hikosaka 9 dan | 0 | Koichi Kobayashi Honorary Kisei | Koichi Kobayashi Honorary Kisei | 0 |
| | | | Shinya Nakamura 8 dan | Shinya Nakamura 8 dan | 1 |
| Shinya Nakamura 8 dan | Shinya Nakamura 8 dan | 1 | Shinya Nakamura 8 dan | Shinya Nakamura 8 dan | 1 |
| Katsunori Yanaka 8 dan | Katsunori Yanaka 8 dan | 0 | | | |
| Semifinals | Semifinals | Semifinals | Finals | Finals | Finals |
| Kim Shushun 7 dan | Kim Shushun 7 dan | 1 | | | |
| Mitsuhisa Yukawa 9 dan | Mitsuhisa Yukawa 9 dan | 0 | | | |
| Mitsuhisa Yukawa 9 dan | Mitsuhisa Yukawa 9 dan | 0 | Kim Shushun 7 dan | Kim Shushun 7 dan | 1 |
| | | | Michael Redmond 9 dan | Michael Redmond 9 dan | 0 |
| Masaki Ogata 9 dan | Masaki Ogata 9 dan | 0 | Michael Redmond 9 dan | Michael Redmond 9 dan | 0 |
| Michael Redmond 9 dan | Michael Redmond 9 dan | 1 | | | |
| Semifinals | Semifinals | Semifinals | Finals | Finals | Finals |
| Masayuki Kurahashi 9 dan | Masayuki Kurahashi 9 dan | 0 | | | |
| Maki Sakai 8 dan | Maki Sakai 8 dan | 1 | | | |
| Maki Sakai 8 dan | Maki Sakai 8 dan | 1 | Maki Sakai 8 dan | Maki Sakai 8 dan | 0 |
| | | | Naoki Hane 9 dan | Naoki Hane 9 dan | 1 |
| Naoki Hane 9 dan | Naoki Hane 9 dan | 0 | Naoki Hane 9 dan | Naoki Hane 9 dan | 1 |
| Cho Sonjin 9 dan | Cho Sonjin 9 dan | 1 | | | |
| Semifinals | Semifinals | Semifinals | Finals | Finals | Finals |
| Rin Kaiho Honorary Tengen | Rin Kaiho Honorary Tengen | 1 | | | |
| Satoshi Kataoka 9 dan | Satoshi Kataoka 9 dan | 0 | | | |
| Satoshi Kataoka 9 dan | Satoshi Kataoka 9 dan | 0 | Rin Kaiho Honorary Tengen | Rin Kaiho Honorary Tengen | 0 |
| | | | Takeshi Sakai 9 dan | Takeshi Sakai 9 dan | 1 |
| Nakano Hironari 9 dan | Nakano Hironari 9 dan | 0 | Takeshi Sakai 9 dan | Takeshi Sakai 9 dan | 1 |
| Takeshi Sakai 9 dan | Takeshi Sakai 9 dan | 1 | | | |

## Main tournament
### Winners section

| Round of 16 | Round of 16 | Quarter-finals | Quarter-finals | Semi-finals | Semi-finals | Final | Final |
| Satoru Kobayashi 9 dan | 1 | | | | |
| So Yokoku 8 dan | 0 | | | | |
| So Yokoku 8 dan | 0 | Satoru Kobayashi 9 dan | 1 | | |
| | | Kim Shushun 7 dan | 0 | | |
| Hiroshi Yamashiro 9 dan | 0 | Kim Shushun 7 dan | 0 | | |
| Kim Shushun 7 dan | 1 | | | | |
| Kim Shushun 7 dan | 1 | | | Satoru Kobayashi 9 dan | 0 |
| | | | | Keigo Yamashita Kisei | 1 |
| Takeshi Sakai 9 dan | 0 | | | Keigo Yamashita Kisei | 1 |
| Norimoto Yoda 9 dan | 1 | | | | |
| Norimoto Yoda 9 dan | 1 | Norimoto Yoda 9 dan | 0 | | |
| | | Keigo Yamashita Kisei | 1 | | |
| Koichi Kobayashi Honorary Kisei | 0 | Keigo Yamashita Kisei | 1 | | |
| Keigo Yamashita Kisei | 1 | | | | | | |
| Keigo Yamashita Kisei | 1 | | | | | Keigo Yamashita Kisei | 1 |
| | | | | | | Cho U Gosei | 0 |
| Cho U Gosei | 1 | | | | | Cho U Gosei | 0 |
| Shinji Takao Meijin | 0 | | | | | | |
| Shinji Takao Meijin | 0 | Cho U Gosei | 1 | | | | |
| | | Hideki Komatsu 9 dan | 0 | | | | |
| Hideo Otake Honorary Gosei | 0 | Hideki Komatsu 9 dan | 0 | | | | |
| Hideki Komatsu 9 dan | 1 | | | | | | |
| Hideki Komatsu 9 dan | 1 | | | Cho U Gosei | 1 | | |
| | | | | Kimio Yamada 9 dan | 0 |
| Kimio Yamada 9 dan | 1 | | | Kimio Yamada 9 dan | 0 |
| Tomoyasu Mimura 9 dan | 0 | | | | |
| Tomoyasu Mimura 9 dan | 0 | Kimio Yamada 9 dan | 1 | | |
| | | O Rissei 9 dan | 0 | | |
| Naoki Hane 9 dan | 0 | O Rissei 9 dan | 0 | | |
| O Rissei 9 dan | 1 | | | | |

### Losers section

| Semifinals | Semifinals | Semifinals | Finals | Finals | Finals |
| Shinji Takao Meijin | Shinji Takao Meijin | 0 | | | |
| Cho U Gosei | Cho U Gosei | 1 | | | |
| Cho U Gosei | Cho U Gosei | 1 | Cho U Gosei | Cho U Gosei | 0 |
| | | | Norimoto Yoda 9 dan | Norimoto Yoda 9 dan | 1 |
| Norimoto Yoda 9 dan | Norimoto Yoda 9 dan | 1 | Norimoto Yoda 9 dan | Norimoto Yoda 9 dan | 1 |
| Kobayashi Satoru 9 dan | Kobayashi Satoru 9 dan | 0 | | | |

### Challenger finals

| Finals | Finals | Finals |
| 1 | Keigo Yamashita Kisei | 1 |
| 2 | Norimoto Yoda 9 dan | 0 |