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73rd Honinbo title

Preliminaries

Here.

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. Motoki Katsuya 3-4 W+R B+R B+R W+R
2. Hane Naoki 2-5 B+R B+R B+R
3. Yamashita Keigo 5-2 W+R W+R W+R B+R
4. Ko Iso 4-3 B+R W+0.5 W+R
5. Kobayashi Satoru 2-5 W+R B+R B+2.5 B+R
6. Ida Atsushi 4-3 W+3.5 W+7.5 B+R
7. Yu Zhengqi 4-3 B+R W+R W+R B+R
8. Shibano Toramaru 4-3 B+R B+R W+R

Demotion Playoff

The bottom four players are demoted: Kobayashi Satoru, Hane Naoki, Motoki Katsuya and one more. Ida Atsushi played a demotion playoff against Yu Zhengqi and Shibano Toramaru and lost twice.

date black white result #mv sgf
2018-04-12 Ida Atsushi Shibano Toramaru W+4.5 276 sgf
2018-04-23 Ida Atsushi Yu Zhengqi W+1.5 215 sgf

73rd Honinbo Title

date black white result #mv sgf
2018-05-15,16 Yamashita Keigo Iyama Yuta B+0.5 256 sgf
2018-05-23,24 Iyama Yuta Yamashita Keigo B+R 171 sgf
2018-06-02,03 Yamashita Keigo Iyama Yuta W+R 244 sgf
2018-06-12,13 Iyama Yuta Yamashita Keigo B+R 189 sgf
2018-06-30,07-01 Yamashita Keigo Iyama Yuta W+R 228 sgf

Iyama won 4-1.