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| | white | black | year | event | guessed | | | Nagahara Yoshiaki (6p) | Michael Redmond (7p) | 1990 | 1st Ryusei A | | start | | Ota Seido (9p) | Mimura Tomoyasu (5p) | 1990 | 16th Meijin | | start | | Ogawa Tomoko (4p) | Miyazaki Shimako (2p) | 1990 | Women's Meijin, 3rd | | start | | Sonoda Yuichi (9p) | Morino Setsuo (9p) | 1990 | 4th Fujitsu Cup | | start | | Qian Yuping (9p) | Nie Weiping (9p) | 1990 | 4th Ten Strongest | | start | | Yu Bin (8p) | Nie Weiping (9p) | 1990 | 4th Ten Strongest | | start | | Michael Redmond (7p) | Ogoshi Ichiro (6p) | 1990 | 1st Ryusei A | | start | | Tono Hiroaki (9p) | Ohira Shuzo (9p) | 1990 | 39th Oza | | start | | Hidaka Toshiyuki (6p) | Oka Nobumitsu (6p) | 1990 | Japan Promotion Tournament, 1990 | | start | | Kobayashi Koichi (9p) | Otake Hideo (9p) | 1990 | Meijin, 15th | | start | | Kobayashi Koichi (9p) | Otake Hideo (9p) | 1990 | Meijin, 15th | | start | | Sakata Eio (9p) | Otake Hideo (9p) | 1990 | 46th Honinbo League | | start | | Aoki Shinichi (6p) | Oya Koichi (6p) | 1990 | 1st Ryusei D | | start | | Chen Linxin (8p) | Qian Yuping (9p) | 1990 | 4th Ten Strongest | | start | | Yu Bin (8p) | Qian Yuping (9p) | 1990 | 4th Ten Strongest | | start | | Cho Chikun (9p) | Rin Kaiho (9p) | 1990 | Kisei, 15th | | start | | Cho Chikun (9p) | Rin Kaiho (9p) | 1990 | Hayago Championship, 23rd | | start | | Kataoka Satoshi (9p) | Rin Kaiho (9p) | 1990 | 10th NEC Cup | | start | | Yoda Norimoto (8p) | Rin Kaiho (9p) | 1990 | Honinbo, 46th | | start | | Tsurumaru Keiichi (3p) | Ryu Shikun (3p) | 1990 | Oteai 1990 | | start | | Takahara Shuji (8p) | Sakata Eio (9p) | 1990 | 16th Gosei | | start | | Yang Sang-kuk (7p) | Seo Pong-su (9p) | 1990 | 25th Wangwi League | | start | | Tei Meiko (8p) | Shiraishi Yutaka (9p) | 1990 | Gosei, 16th | | start | | Nakazawa Ayako (1p) | Sugiuchi Kazuko (8p) | 1990 | 3rd Female Meijin | | start | | Ishida Yoshio (9p) | Ushikubo Yoshitaka (9p) | 1990 | Gosei, 16th | | start |
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