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1st Ryusei title

Four times 24 players play a ladder. The winner of each ladder and the player with most wins proceed to the 8-player knockout tournament. Time is 30 secs/move, 10 times 1 minute. Komi is 5.5.

The four ladders

Group A

date black white result #mv sgf
1990-06-25 Ryu Shikun Izumitani Hideo B+R 177 sgf
1990-07-09 Okada Shinichiro Ryu Shikun W+3.5 228 sgf
1990-07-23 Ryu Shikun Takabayashi Masahiro W+1.5 306 sgf
1990-07-30 Takabayashi Masahiro Ono Nobuyuki B+R 153 sgf
1990-08-27 Su Kaiseki Takabayashi Masahiro B+R 141 sgf
1990-09-10 Su Kaiseki Imamura Yoshiaki W+R 212 sgf
1990-10-01 Michael Redmond Imamura Yoshiaki B+8.5 253 sgf
1990-10-15 Ogoshi Ichiro Michael Redmond W+R 160 sgf
1990-10-29 Michael Redmond Nagahara Yoshiaki B+R 177 sgf
1990-11-12 Michael Redmond Kanda Ei B+R 223 sgf
1990-11-26 Michael Redmond Kosugi Masaru B+2.5 230 sgf
1990-12-17 Michael Redmond Imamura Toshiya W+R 162 sgf
1991-01-14 Aragaki Takeshi Imamura Toshiya W+R 174 sgf
1991-01-21 Imamura Toshiya Hisajima Kunio B+R 129 sgf
1991-02-04 Imamura Toshiya Kaji Kazutame B+10.5 247 sgf
1991-02-25 Imamura Toshiya Yamashiro Hiroshi W+R 202 sgf
1991-03-11 Yamashiro Hiroshi Awaji Shuzo W+4.5 270 sgf
1991-03-25 Awaji Shuzo Sakai Takeshi B+R 241 sgf
1991-04-22 Hane Yasumasa Awaji Shuzo W+5.5 283 sgf
1991-05-13 Awaji Shuzo Abe Yoshiteru B+8.5 291 sgf
1991-05-27 Kudo Norio Awaji Shuzo B+0.5 295 sgf
1991-06-03 Sugiuchi Masao Kudo Norio W+R 240 sgf
1991-06-24 Cho Chikun Kudo Norio B+R 169 sgf

Winner: Cho Chikun
Most wins (5): Michael Redmond

Group B

date black white result #mv sgf
1990-07-02 Matsuoka Hideki Arimura Hiroshi W+R 192 sgf
1990-07-09 Arimura Hiroshi Seki Kazuya B+R 243 sgf
1990-07-23 Konagai Masaru Arimura Hiroshi W+3.5 247 sgf
1990-08-07 Arimura Hiroshi Shimoji Gensho B+R 249 sgf
1990-09-03 Arimura Hiroshi Yamamoto Masato B+R 95 sgf
1990-09-17 Arimura Hiroshi Cho Sonjin W+R 130 sgf
1990-09-24 Maeda Ryoji Cho Sonjin W+5.5 272 sgf
1990-10-08 Doi Makoto Cho Sonjin W+0.5 251 sgf
1990-10-22 Cho Sonjin Asano Hideaki W+4.5 270 sgf
1990-11-05 Tei Meiko Asano Hideaki B+R 143 sgf
1990-11-19 Tei Meiko Umeki Suguru B+R 129 sgf
1990-12-03 Tei Meiko Naganuma Makoto B+R 133 sgf
1990-12-24 Ko Mosei Tei Meiko W+6.5 245 sgf
1991-01-14 Tei Meiko Miyazawa Goro B+R 247 sgf
1991-01-28 Nishigami Yoshihiko Tei Meiko W+R 200 sgf
1991-02-18 Tei Meiko O Rissei W+4.5 290 sgf
1992-02-24 O Rissei Sonoda Yuichi B+1.5 255 sgf
1991-03-18 Sakaguchi Ryuzo O Rissei W+0.5 281 sgf
1991-04-01 O Rissei Honda Kunihisa B+R 111 sgf
1991-04-15 Ishigure Ikuro O Rissei W+3.5 264 sgf
1991-05-20 O Rissei Ishii Kunio B+R 177 sgf
1991-06-10 O Rissei Iwata Tatsuaki W+1.5 250 sgf
1991-07-08 Iwata Tatsuaki Rin Kaiho W+6.5 243 sgf

Winner: Rin Kaiho
Most wins (6): O Rissei

Group C

date black white result #mv sgf
1990-06-18 Takanashi Seiken Kenmochi Jo B+3.5 271 sgf
1990-06-25 Takanashi Seiken Tamaki Shinobu B+R 253 sgf
1990-07-16 Takanashi Seiken Yamada Wakio B+R 91 sgf
1990-07-30 Takanashi Seiken Hagiya Kazuhiro B+5.5 273 sgf
1990-08-27 Takanashi Seiken Koyama Hideo B+R 131 sgf
1990-09-10 Takanashi Seiken Chin Kaei W+R 214 sgf
1990-09-24 Onda Yasuhiko Chin Kaei W+6.5 333 sgf
1990-10-08 Hidaka Toshiyuki Chin Kaei W+5.5 262 sgf
1990-10-22 Chin Kaei Hashimoto Yujiro B+R 149 sgf
1990-11-05 Chin Kaei Yoda Norimoto W+R 180 sgf
1990-11-19 Yoda Norimoto Ito Yoji B+R 127 sgf
1990-12-10 Yoda Norimoto Kanno Kiyonori W+2.5 233 sgf
1990-12-17 Kanno Kiyonori Hikosaka Naoto W+5.5 240 sgf
1991-01-21 Inoue Kunio Hikosaka Naoto B+1.5 291 sgf
1991-01-28 Inoue Kunio Fukui Masaaki B+4.5 305 sgf
1991-02-18 Kobayashi Satoru Inoue Kunio B+R 209 sgf
1991-03-04 Kamimura Haruo Kobayashi Satoru W+R 166 sgf
1991-03-18 Nakamura Hidehito Kobayashi Satoru B+0.5 332 sgf
1991-04-08 Oyama Kunio Nakamura Hidehito B+2.5 257 sgf
1991-04-15 Haruyama Isamu Oyama Kunio W+7.5 237 sgf
1991-05-13 Sanno Hirotaka Oyama Kunio B+R 197 sgf
1991-05-27 Sanno Hirotaka Sakakibara Shoji W+3.5 294 sgf
1991-06-17 Sakakibara Shoji Ishida Yoshio W+12.5 260 sgf

Winner: Ishida Yoshio
Most wins (5): Takanashi Seiken

Group D

date black white result #mv sgf
1990-06-11 Abe Yumiko Iguchi Hideichiro W+R 140 sgf
1990-07-02 Hoshino Masaki Iguchi Hideichiro B+R 175 sgf
1990-07-16 Hoshino Masaki Nakaonoda Tomomi W+R 216 sgf
1990-08-07 Nakaonoda Tomomi Muramatsu Ryuichi B+5.5 246 sgf
1990-09-03 Nakaonoda Tomomi Hata Hidefumi B+T 185 sgf
1990-09-18 Nakaonoda Tomomi Nakayama Noriyuki B+6.5 255 sgf
1990-10-01 Aoki Shinichi Nakaonoda Tomomi B+R 103 sgf
1990-10-15 Oya Koichi Aoki Shinichi W+R 140 sgf
1990-10-29 Kobayashi Kenji Aoki Shinichi B+6.5 266 sgf
1990-11-12 Komatsu Hideki Kobayashi Kenji B+R 173 sgf
1990-11-26 Sonoda Yasutaka Komatsu Hideki W+3.5 255 sgf
1990-12-03 Komatsu Hideki Fukui Susumu W+3.5 258 sgf
1990-12-10 O Meien Fukui Susumu B+1.5 259 sgf
1990-12-24 Tokimoto Hajime O Meien W+10.5 273 sgf
1991-02-04 O Meien Kamimura Kunio W+9.5 262 sgf
1991-02-25 Hasegawa Sunao Kamimura Kunio W+R 222 sgf
1991-03-11 Kataoka Satoshi Kamimura Kunio W+2.5 202 sgf
1991-03-25 Ishida Akira Kamimura Kunio B+R 133 sgf
1991-04-01 Sato Masaharu Ishida Akira W+R 122 sgf
1991-04-08 Ishida Akira Kawamoto Noboru B+R 191 sgf
1991-04-22 Kojima Takaho Ishida Akira B+R 195 sgf
1991-05-20 Ohira Shuzo Kojima Takaho W+R 134 sgf
1991-06-10 Hashimoto Shoji Kojima Takaho B+R 97 sgf

Winner: Hashimoto Shoji
Most wins (4): Nakaonoda Tomomi

1st Ryusei Title

Hashimoto Shoji O Rissei
B+R		 Ishida Yoshio
B+R		 Cho Chikun
B+13.5
O Rissei
Michael Redmond Ishida Yoshio
W+8.5
Ishida Yoshio
Rin Kaiho Takanashi Seiken
B+5.5		 Cho Chikun
W+R
Takanashi Seiken
Nakaonoda Tomomi Cho Chikun
B+2.5
Cho Chikun

Semifinals and Final:

date black white result #mv sgf
1991-07-29 Ishida Yoshio O Rissei B+R 177 sgf
1991-07-29 Takanashi Seiken Cho Chikun W+R 104 sgf
1991-08-18 Cho Chikun Ishida Yoshio B+13.5 299 sgf