| Oyama Kunio | Oyama Kunio W+R 1990-02-08 |
Oyama Kunio W+R 1990-03-01 |
Yamashiro Hiroshi W+3.5 1990-04-12 |
Fujisawa Shuko B+3.5 1990-06-14 |
Sonoda Yuichi B+4.5 1990-09-06 |
Kobayashi Koichi B+R 1990-10-11 |
| Imamura Yoshiaki | ||||||
| Takabayashi Masahiro | ||||||
| Yamashiro Hiroshi | Yamashiro Hiroshi W+R 1990-03-15 |
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| Cho Chikun | ||||||
| Fujisawa Shuko | Fujisawa Shuko B+R 1990-05-03 |
Fujisawa Shuko B+2.5 1990-05-24 |
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| Sato Masaharu | ||||||
| Hikosaka Naoto | Hikosaka Naoto W+R 1990-02-15 |
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| Sanno Hirotaka | ||||||
| Sonoda Yuichi | Sonoda Yuichi B+R 1990-04-12 |
Sonoda Yuichi B+R 1990-05-10 |
Sonoda Yuichi W+R 1990-06-07 |
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| Yoda Norimoto | ||||||
| Miyazawa Goro | Miyazawa Goro W+R 1990-02-08 |
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| Chin Kaei | ||||||
| Kiyonari Tetsuya | Kiyonari Tetsuya B+1.5 1990-03-22 |
Kiyonari Tetsuya B+R 1990-04-19 |
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| Otake Hideo | ||||||
| Awaji Shuzo | Awaji Shuzo B+R 1990-02-01 |
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| Shiraishi Yutaka | ||||||
| Kobayashi Koichi | Kobayashi Koichi B+R 1990-03-15 |
Kobayashi Koichi W+4.5 1990-04-19 |
Kobayashi Koichi W+2.5 1990-06-14 |
Kobayashi Koichi B+R 1990-09-06 |
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| Nakamura Hidehito | ||||||
| Sakai Takeshi | Sakai Takeshi B+R 1990-02-08 |
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| Ushikubo Yoshitaka | ||||||
| Imamura Toshiya | Imamura Toshiya W+R 1990-02-08 |
Imamura Toshiya W+R 1990-03-29 |
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| Tokimoto Hajime | ||||||
| Nakano Hironari | Nakano Hironari B+R 1990-02-28 |
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| Onda Yasuhiko | ||||||
| Ohira Shuzo | Ohira Shuzo W+R 1990-03-01 |
Ohira Shuzo W+1.5 1990-03-29 |
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| Sakata Eio | ||||||
| Yuki Satoshi | Yuki Satoshi B+2.5 1990-02-01 |
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| Tei Meiko | ||||||
| Hane Yasumasa | Hane Yasumasa W+11.5 1990-02-22 |
*Both lost* 1990-04-05 |
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| Kori Toshio | ||||||
| Haruyama Isamu | Haruyama Isamu B+2.5 1990-02-08 |
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| Hashimoto Shoji | ||||||
In the game between Hane Yasumasa and Haruyama Isamu, White played move 242 at position J13 where he had earlier played move 46, but that stone had accidentally been moved to H13 and neither player had noticed. It was decided that both players lost this game.
| date | black | white | result | #mv | sgf |
|---|---|---|---|---|---|
| 1990-11-01 | Kobayashi Koichi | Rin Kaiho | B+R | 179 | sgf |
| 1990-11-23 | Rin Kaiho | Kobayashi Koichi | B+0.5 | 281 | sgf |
| 1990-11-29 | Kobayashi Koichi | Rin Kaiho | W+R | 186 | sgf |
| 1990-12-10 | Rin Kaiho | Kobayashi Koichi | B+3.5 | 242 | sgf |
Rin Kaiho won 3-1.