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21st Judan title

Winners' Section

Winners' Section
Sonoda Yuichi Otake Hideo
W+R
1982-07-29
Otake Hideo
B+5.5
1982-10-07
Otake Hideo
B+R
1982-10-21
Kato Masao
W+R
1982-12-23
Otake Hideo
Iwata Tatsuaki Iwata Tatsuaki
B+R
1982-06-03
Sugiuchi Masao
Honda Kunihisa Honda Kunihisa
B+3.5
1982-07-01
Kobayashi Koichi
W+R
1982-08-26
Kori Toshio
Kobayashi Koichi Kobayashi Koichi
B+R
1982-07-25
Sakata Eio
Ishida Yoshio Ishida Yoshio
B+2.5
1982-06-17
Koyama Yasuo
W+1.5
1982-08-12
Kato Masao
W+R
1982-09-23
Hashimoto Shoji
Koyama Yasuo Koyama Yasuo
B+R
1982-07-01
Kanashima Tadashi
Kubouchi Shuchi Kojima Takaho
W+R
1982-05-27
Kato Masao
W+R
1982-07-28
Kojima Takaho
Tono Hiroaki Kato Masao
W+8.5
1982-06-24
Kato Masao

Losers' Section

Losers' Section
Sonoda Yuichi Sugiuchi Masao
W+2.5
1982-08-26
Sugiuchi Masao
W+11.5
1982-09-30
Sugiuchi Masao
B+R
1982-10-28
Sugiuchi Masao
W+R
1983-01-13
Kobayashi Koichi
B+R
1983-01-27
Sugiuchi Masao
Kori Toshio Sakata Eio
B+R
1982-09-02
Sakata Eio
Hashimoto Shoji Kanashima Tadashi
B+1.5
1982-07-29
Tono Hiroaki
B+R
1982-09-02
Kanashima Tadashi
Kubouchi Shuchi Tono Hiroaki
W+R
1982-07-15
Tono Hiroaki
Otake Hideo
Iwata Tatsuaki Iwata Tatsuaki
W+R
1982-11-04
Iwata Tatsuaki
B+R
1982-11-25
Kobayashi Koichi
W+0.5
1983-01-13
Honda Kunihisa
Ishida Yoshio Ishida Yoshio
B+1.5
1982-09-16
Kojima Takaho
Kobayashi Koichi Kobayashi Koichi
W+4.5
1982-12-02
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 3-2.