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25th Honinbo title

League

In the first column the white player, on the top row the black player.

# player result 1 2 3 4 5 6 7 8
1. Kato Masao 5-2 B+11.5 W+R B+R W+
2. Fujisawa Shuko 2-5 B+ W+11.5 B+R
3. Takagawa Shukaku 3-4 B+R W+R B+R
4. Sakata Eio 6-1 W+R W+R W+R W+1.5
5. Kano Yoshinori 5-2 W+ W+0.5 W+ W+
6. Fujisawa Hosai 3-4 B+ W+R W+
7. Iwata Tatsuaki 3-4 B+3.5 B+0.5 W+8.5 W+8.5
8. Hisai Keishi 1-6 B+ W+0.5 B+0.5

Demotion Playoff

Each of Takagawa Shukaku, Iwata Tatsuaki and Fujisawa Hosai ended with 3 wins. A playoff determined who of these three remained in the League. Fujisawa Hosai won.

date black white result #mv sgf
1970-06-17,18 Takagawa Shukaku Iwata Tatsuaki B+R 253 sgf
1970-07-01,02 Takagawa Shukaku Fujisawa Hosai W+2.5 284 sgf

25th Honinbo Title

date black white result #mv sgf
1970-04-27,28 Sakata Eio Rin Kaiho W+2.5 253 sgf
1970-05-07,08 Rin Kaiho Sakata Eio B+0.5 264 sgf
1970-05-15,16 Sakata Eio Rin Kaiho W+6.5 246 sgf
1970-05-27,28 Rin Kaiho Sakata Eio B+1.5 240 sgf

Rin Kaiho won with 4-0.