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40th Gosei title

Preliminaries

In the preliminaries, 24 players earned access to the main tournament.

Tournament

Kiyonari Tetsuya Komatsu Hideki
B+R
2015-01-08
Cho U
W+2.5
2015-02-19
Murakawa
Daisuke
B+R
2015-04-16
Yamashita
Keigo
W+R
2015-04-30
Yamashita
Keigo
W+R
2015-05-18
Komatsu Hideki
Cho U Cho U
W+R
2014-12-18
Matsumoto Takehisa
Cho Sonjin Hane Naoki
B+R
2014-12-11
Murakawa
Daisuke
B+R
2015-02-26
Hane Naoki
Murakawa Daisuke Murakawa
Daisuke
B+8.5
2015-01-19
Nakano Hironari
Iwamaru Taira Iwamaru Taira
B+R
2015-01-29
Iwamaru Taira
W+0.5
2015-02-19
Yamashita
Keigo
B+3.5
2015-04-20
Yukawa Mitsuhisa
Ko Iso Ko Iso
B+R
2015-01-22
Sakai Hideyuki
Yamashita Keigo Yamashita Keigo
B+R
2014-12-11
Yamashita
Keigo
B+R
2015-03-30
Iguchi Toyohide
Cho Riyu
Kono Rin Kono Rin
B+R
2015-03-05
Kono Rin
Void
2015-04-09
B+R
2015-04-13
Kono Rin
B+3.5
2015-05-11
Sada Atsushi Cho Chikun
B+R
2014-12-18
Cho Chikun
Mitani Tetsuya Mitani Tetsuya
B+R
2015-01-08
Mitani Tetsuya
W+R
2015-03-19
Kazama Jun
Ida Atsushi Ida Atsushi
B+1.5
2015-01-29
Honda Kunihisa
Tsuruyama Atsushi Yuki Satoshi
B+R
2015-01-22
Yuki Satoshi
B+R
2015-02-12
Shida Tatsuya
W+R
2015-04-02
Yuki Satoshi
O Rissei Yoda Norimoto
B+R
2014-12-25
Yoda Norimoto
Shida Tatsuya Shida Tatsuya
B+5.5
2015-01-29
Shida Tatsuya
W+R
2015-02-26
Ohashi Naruya
So Yokoku

The game between Kono Rin and Mitani Tetsuya on 2015-04-09 was void (quadruple ko) and was replayed on 2015-04-13 (Kono won).

40th Gosei title

date black white result #mv sgf
2015-06-26 Iyama Yuta Yamashita Keigo B+R 171 sgf
2015-07-20 Yamashita Keigo Iyama Yuta B+R 183 sgf
2015-07-27 Iyama Yuta Yamashita Keigo B+1.5 292 sgf
2015-08-07 Yamashita Keigo Iyama Yuta W+R 122 sgf

Iyama Yuta won 3-1.