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| | white | black | year | event | guessed | | | Hane Yasumasa (9p) | Ito Yoji (7p) | 1990 | 31st Okan | | start | | Obuchi Morito (6p) | Izumitani Hideo (4p) | 1990 | Japan Promotion Tournament, 1990 | | start | | Hong Tae Seon (7p) | Jeong Hyeon San (3p) | 1990 | Kiwang, 15th | | start | | Lee Bong Keun (7p) | Kang Hun (7p) | 1990 | Ch'oegowi, 30th | | start | | Cho Chikun (9p) | Kato Masao (9p) | 1990 | Kisei, 15th | | start | | Hane Yasumasa (9p) | Kato Masao (9p) | 1990 | 38th Oza Final | | start | | Ishii Kunio (9p) | Kato Masao (9p) | 1990 | 16th Meijin | | start | | Maeda Ryoji (6p) | Kenmochi Jo (3p) | 1990 | Oteai 1990 | | start | | Yi Tong-kyu (7p) | Kim Su-chang (7p) | 1990 | 26th P'aewang | | start | | Aoki Shinichi (6p) | Kobayashi Kenji (6p) | 1990 | 1st Ryusei D | | start | | Otake Hideo (9p) | Kobayashi Koichi (9p) | 1990 | Meijin, 15th | | start | | Otake Hideo (9p) | Kobayashi Koichi (9p) | 1990 | Honinbo, 45th | | start | | Sonoda Yuichi (9p) | Kobayashi Koichi (9p) | 1990 | 16th Tengen | | start | | Kataoka Satoshi (6p) | Komatsu Hideki (7p) | 1990 | Honinbo, 46th | | start | | Fukui Masaaki (8p) | Kori Toshio (8p) | 1990 | Gosei, 16th | | start | | Nakazawa Ayako (1p) | Koyama Mitsuru (2p) | 1990 | Women's Honinbo, 9th | | start | | Kobayashi Reiko (6p) | Kusunoki Teruko (Female Honinbo) | 1990 | 3rd Female Meijin | | start | | Ha Chan Seok (8p) | Lee Chang Ho (4p) | 1990 | Kiwang, 15th | | start | | Cao Dayuan (9p) | Liu Xiaoguang (9p) | 1990 | 4th Ten Strongest | | start | | Ma Xiaochun (9p) | Liu Xiaoguang (9p) | 1990 | 4th Ten Strongest | | start | | Wang Jianhong (7p) | Ma Xiaochun (9p) | 1990 | 4th Ten Strongest | | start | | Yu Bin (8p) | Ma Xiaochun (9p) | 1990 | Mingren, 3rd | | start | | Yu Bin (8p) | Ma Xiaochun (9p) | 1990 | Mingren, 3rd | | start | | Zhang Wendong (7p) | Ma Xiaochun (9p) | 1990 | 4th Ten Strongest | | start | | Imamura Yoshiaki (6p) | Michael Redmond (7p) | 1990 | 1st Ryusei A | | start |
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