21st Judan title 1983

Up 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

# 21st Judan title

## Winners' Section

Winners' Section
Sonoda Yuichi | Otake Hideo W+R | Otake Hideo B+5.5 | Otake Hideo B+R | Kato Masao W+R
Otake Hideo
Iwata Tatsuaki | Iwata Tatsuaki B+R
Sugiuchi Masao
Honda Kunihisa | Honda Kunihisa B+3.5 | Kobayashi Koichi W+R
Kori Toshio
Kobayashi Koichi | Kobayashi Koichi B+R
Sakata Eio
Ishida Yoshio | Ishida Yoshio B+2.5 | Koyama Yasuo W+1.5 | Kato Masao W+R
Hashimoto Shoji
Koyama Yasuo | Koyama Yasuo B+R
Kanashima Tadashi
Kubouchi Shuchi | Kojima Takaho W+R | Kato Masao W+R
Kojima Takaho
Tono Hiroaki | Kato Masao W+8.5
Kato Masao

## Losers' Section

Losers' Section
Sonoda Yuichi | Sugiuchi Masao W+2.5 | Sugiuchi Masao W+11.5 | Sugiuchi Masao B+R | Sugiuchi Masao W+R | Kobayashi Koichi B+R
Sugiuchi Masao
Kori Toshio | Sakata Eio B+R
Sakata Eio
Hashimoto Shoji | Kanashima Tadashi B+1.5 | Tono Hiroaki B+R
Kanashima Tadashi
Kubouchi Shuchi | Tono Hiroaki W+R
Tono Hiroaki
Otake Hideo
Iwata Tatsuaki | Iwata Tatsuaki W+R | Iwata Tatsuaki B+R | Kobayashi Koichi W+0.5
Honda Kunihisa
Ishida Yoshio | Ishida Yoshio B+1.5
Kojima Takaho
Kobayashi Koichi | Kobayashi Koichi W+4.5
Koyama Yasuo

## Challenger decision match

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

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
1983-02-10 | Kato Masao | Kobayashi Koichi | B+R | 219 | sgf

## 21st Judan Title

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
1983-03-03 | Cho Chikun | Kato Masao | W+0.5 | 277 | sgf
1983-03-25 | Kato Masao | Cho Chikun | B+0.5 | 307 | sgf
1983-03-06 | Cho Chikun | Kato Masao | B+R | 193 | sgf
1983-04-13 | Kato Masao | Cho Chikun | W+R | 178 | sgf
1983-04-27 | Cho Chikun | Kato Masao | W+0.5 | 257 | sgf

Kato Masao won with 3-2.