18th Judan title 1980

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# 18th Judan title

## Winners' Section

Winners' Section
Ishida Akira | Ishida Akira B+5.5 | Ishida Akira W+R | Otake Hideo W+R | Otake Hideo W+R
Shimamura Toshihiro
Sakata Eio | Hashimoto Shoji W+R
Hashimoto Shoji
Sakai Takeshi | Otake Hideo W+R | Otake Hideo B+8.5
Otake Hideo
Rin Kaiho | Honda Kunihisa W+2.5
Honda Kunihisa
Nakamura Hidehito | Nakamura Hidehito B+R | Nakamura Hidehito W+R | Kudo Norio B+R
Kajiwara Takeo
Haruyama Isamu | Ishida Yoshio W+R
Ishida Yoshio
Cho Chikun | Sonoda Yuichi W+5.5 | Kudo Norio B+R
Sonoda Yuichi
Kudo Norio | Kudo Norio B+R
Ohira Shuzo

## Losers' Section

Losers' Section
Shimamura Toshihiro | Sakata Eio W+R | Rin Kaiho B+R | Rin Kaiho B+R | Kudo Norio B+R | Kudo Norio W+4.5
Sakata Eio
Sakai Takeshi | Rin Kaiho W+R
Rin Kaiho
Kajiwara Takeo | Kajiwara Takeo B+R | Cho Chikun W+9.5
Haruyama Isamu
Cho Chikun | Cho Chikun B+R
Ohira Shuzo
Kudo Norio
Hashimoto Shoji | Hashimoto Shoji W+R | Hashimoto Shoji W+R | Hashimoto Shoji B+R
Honda Kunihisa
Ishida Yoshio | Ishida Yoshio B+3.5
Sonoda Yuichi
Ishida Akira | Ishida Akira W+R
Nakamura Hidehito

## Challenger decision match

Winner of the Winners' Section against winner of the Losers' Section.

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
1980-02-13 | Otake Hideo | Kudo Norio | B+R | 205 | sgf

## 18th Judan Title

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
1980-03-05 | Kato Masao | Otake Hideo | W+4.5 | 246 | sgf
1980-03-12 | Otake Hideo | Kato Masao | B+2.5 | 260 | sgf
1980-04-01 | Kato Masao | Otake Hideo | B+R | 207 | sgf
1980-04-09 | Otake Hideo | Kato Masao | W+R | 220 | sgf
1980-04-14 | Kato Masao | Otake Hideo | W+0.5 | 223 | sgf

Otake Hideo won with 3-2.