21st Ryusei title - 2012

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# 21st Ryusei title

Eight times 12 players play a ladder. The winner of each ladder and the player with most wins proceed to the 16-player knockout tournament. Time is 30 secs/move, 10 times 1 minute. Komi is 6.5.

## The eight ladders

### Group A

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
2011-08-11 | Anzai Nobuaki | Ichiriki Ryo | W+R | 250 | sgf
2011-08-11 | Ohba Junya | Ichiriki Ryo | B+R | 127 | sgf
2011-09-12 | Cho Riyu | Ohba Junya | B+R | 195 | sgf
2011-09-12 | So Yokoku | Cho Riyu | B+R | 221 | sgf
2011-10-13 | Yamada Noriyoshi | So Yokoku | W+R | 146 | sgf
2011-10-13 | Ogaki Yusaku | So Yokoku | B+R | 213 | sgf
2011-12-15 | Kamimura Haruo | Ogaki Yusaku | W+R | 182 | sgf
2011-12-15 | Ogaki Yusaku | Awaji Shuzo | W+8.5 | 290 | sgf
2012-02-02 | Suzuki Ayumi | Awaji Shuzo | W+R | 176 | sgf
2012-02-02 | Awaji Shuzo | Kuwamoto Shinpei | B+R | 169 | sgf
2012-03-22 | Iyama Yuta | Awaji Shuzo | B+7.5 | 268 | sgf

Winner: Iyama Yuta
Most wins (3): Awaji Shuzo

### Group B

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
2011-07-28 | Numadate Sakiya | Ohashi Hirofumi | B+1.5 | 311 | sgf
2011-07-28 | Numadate Sakiya | Kato Yuki | W+R | 226 | sgf
2011-10-10 | Ko Iso | Kato Yuki | B+R | 161 | sgf
2011-10-10 | Furuya Yutaka | Ko Iso | W+3.5 | 288 | sgf
2011-12-01 | Nakano Yasuhiro | Ko Iso | W+R | 172 | sgf
2011-12-01 | Nakano Hironari | Ko Iso | W+R | 130 | sgf
2012-01-19 | Aragaki Takeshi | Ko Iso | W+R | 160 | sgf
2012-01-19 | Sakaguchi Ryuzo | Ko Iso | W+R | 208 | sgf
2012-03-01 | Ando Kazushige | Ko Iso | W+R | 220 | sgf
2012-03-01 | Ko Iso | Mitani Tetsuya | W+R | 236 | sgf
2012-03-22 | Yuki Satoshi | Mitani Tetsuya | W+2.5 | 256 | sgf

Winner: Mitani Tetsuya
Most wins (7): Ko Iso

### Group C

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
2011-08-25 | Adachi Toshimasa | Xie Yimin | B+R | 185 | sgf
2011-08-25 | Adachi Toshimasa | Mitsunaga Junzou | B+14.5 | 264 | sgf
2011-11-03 | Adachi Toshimasa | Maeda Ryoji | B+R | 203 | sgf
2011-11-03 | Adachi Toshimasa | Akiyama Jiro | W+R | 176 | sgf
2011-12-05 | Kono Rin | Akiyama Jiro | B+10.5 | 316 | sgf
2011-12-05 | Ishida Atsushi | Kono Rin | W+4.5 | 252 | sgf
2012-02-23 | Yamashiro Hiroshi | Kono Rin | B+R | 247 | sgf
2012-02-23 | Fukui Masaaki | Yamashiro Hiroshi | W+2.5 | 241 | sgf
2012-04-12 | Cho Chikun | Yamashiro Hiroshi | B+3.5 | 272 | sgf
2012-04-12 | Kim Sujun | Cho Chikun | B+0.5 | 344 | sgf
2012-04-30 | Cho U | Kim Sujun | B+R | 99 | sgf

Winner: Cho U
Most wins (3): Adachi Toshimasa

### Group D

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
2011-08-04 | Obuchi Kotaro | Ohashi Naruya | W+R | 242 | sgf
2011-08-04 | Ohashi Naruya | Sasaki Tsuyoshi | B+R | 169 | sgf
2011-09-26 | Ohashi Naruya | Takahashi Hideo | B+2.5 | 261 | sgf
2011-09-26 | Ohashi Naruya | Kono Mitsuki | W+4.5 | 253 | sgf
2011-10-24 | Kono Mitsuki | Sugiuchi Kazuko | B+R | 137 | sgf
2011-10-24 | Kono Mitsuki | Imamura Yoshiaki | B+3.5 | 308 | sgf
2012-02-02 | Kiyonari Tetsuya | Kono Mitsuki | B+R | 139 | sgf
2012-02-02 | Kiyonari Tetsuya | Ishii Kunio | B+7.5 | 253 | sgf
2012-03-08 | Ishida Yoshio | Kiyonari Tetsuya | B+4.5 | 246 | sgf
2012-03-08 | Ishida Yoshio | Kato Atsushi | W+6.5 | 333 | sgf
2012-04-26 | Yamashita Keigo | Kato Atsushi | B+R | 121 | sgf

Winner: Yamashita Keigo
Most wins (3): Kono Mitsuki

### Group E

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
2011-08-29 | Terayama Rei | Makihata Taeko | B+R | 213 | sgf
2011-08-29 | Takei Takashi | Terayama Rei | B+R | 235 | sgf
2011-10-17 | Sugimoto Akira | Takei Takashi | W+R | 146 | sgf
2011-10-17 | Kono Takashi | Takei Takashi | B+R | 169 | sgf
2011-11-10 | Kono Takashi | Iwata Hajime | B+R | 95 | sgf
2011-11-10 | Komatsu Hideki | Kono Takashi | W+1.5 | 311 | sgf
2011-12-19 | Kono Takashi | Takahara Shuji | B+7.5 | 244 | sgf
2011-12-19 | Cho Sonjin | Kono Takashi | B+R | 143 | sgf
2012-03-15 | Cho Sonjin | Otake Hideo | B+0.5 | 253 | sgf
2012-03-15 | Cho Sonjin | Tei Meiko | B+R | 169 | sgf
2012-04-26 | Sakai Hideyuki | Cho Sonjin | W+R | 212 | sgf

Winner: Cho Sonjin
Most wins (4): Cho Sonjin
2nd most wins (4): Kono Takashi

### Group F

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
2011-08-22 | Tajima Shingo | Horimoto Mitsunari | W+R | 230 | sgf
2011-08-22 | Kubo Hideo | Horimoto Mitsunari | B+R | 237 | sgf
2011-10-27 | Rin Shien | Kubo Hideo | B+R | 167 | sgf
2011-10-27 | Rin Shien | Nakane Naoyuki | B+6.5 | 276 | sgf
2011-11-24 | Rin Shien | Doi Makoto | B+R | 189 | sgf
2011-11-24 | Rin Shien | So Kofuku | B+R | 273 | sgf
2012-01-19 | Rin Shien | Ogata Masaki | B+R | 227 | sgf
2012-01-19 | O Meien | Rin Shien | B+R | 271 | sgf
2012-04-16 | O Meien | O Rissei | W+4.5 | 320 | sgf
2012-04-16 | O Rissei | Takao Shinji | B+R | 189 | sgf
2012-05-03 | Mizokami Tomochika | O Rissei | W+0.5 | 262 | sgf

Winner: O Rissei
Most wins (5): Rin Shien

### Group G

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
2011-07-25 | Shiraishi Yuichi | Ida Atsushi | W+R | 222 | sgf
2011-07-25 | Ida Atsushi | Lee Ishu | W+R | 152 | sgf
2011-09-08 | Lee Ishu | Shuto Shun | W+R | 218 | sgf
2011-09-08 | Yo Kaei | Shuto Shun | W+6.5 | 271 | sgf
2011-11-14 | Shuto Shun | Nishimura Keiji | W+R | 272 | sgf
2011-11-14 | Goto Shungo | Nishimura Keiji | W+R | 210 | sgf
2012-01-12 | Oya Koichi | Nishimura Keiji | B+R | 175 | sgf
2012-01-12 | Yoda Norimoto | Oya Koichi | B+R | 135 | sgf
2012-03-19 | Kobayashi Satoru | Yoda Norimoto | W+R | 160 | sgf
2012-03-19 | Shida Tatsuya | Yoda Norimoto | B+4.5 | 320 | sgf
2012-05-03 | Yamada Kimio | Shida Tatsuya | W+R | 176 | sgf

Winner: Shida Tatsuya
Most wins (2): Shida Tatsuya
2nd most wins (2): Yoda Norimoto

### Group H

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
2011-09-01 | Tamai Shin | Suzuki Shinji | W+5.5 | 268 | sgf
2011-09-01 | Suzuki Shinji | Seto Taiki | W+R | 146 | sgf
2011-10-03 | Seto Taiki | Mochizuki Kenichi | B+R | 229 | sgf
2011-10-03 | Seto Taiki | Omori Yasushi | B+7.5 | 234 | sgf
2011-11-17 | Izumitani Hideo | Seto Taiki | W+R | 234 | sgf
2011-11-17 | Yukawa Mitsuhisa | Seto Taiki | B+2.5 | 245 | sgf
2011-12-08 | Yukawa Mitsuhisa | Imamura Toshiya | B+R | 165 | sgf
2011-12-08 | Yukawa Mitsuhisa | Takemiya Masaki | W+3.5 | 251 | sgf
2012-04-05 | Hane Naoki | Takemiya Masaki | B+1.5 | 261 | sgf
2012-04-05 | Hane Naoki | Murakawa Daisuke | B+R | 147 | sgf
2012-04-30 | Rin Kanketsu | Hane Naoki | B+2.5 | 277 | sgf

Winner: Rin Kanketsu
Most wins (4): Seto Taiki

## 21st Ryusei Title

Shida Tatsuya | Awaji Shuzo W+R | Seto Taiki B+0.5 | Rin Kanketsu B+R | Iyama Yuta B+R
Awaji Shuzo
Mitani Tetsuya | Seto Taiki W+R
Seto Taiki
Adachi Toshimasa | Yamashita Keigo W+R | Rin Kanketsu B+R
Yamashita Keigo
Kono Takashi | Rin Kanketsu W+2.5
Rin Kanketsu
Cho Sonjin | Rin Shien W+R | O Rissei W+15.5 | Iyama Yuta W+0.5
Rin Shien
Kono Mitsuki | O Rissei W+7.5
O Rissei
Yoda Norimoto | Cho U B+3.5 | Iyama Yuta B+R
Cho U
Ko Iso | Iyama Yuta W+2.5
Iyama Yuta

Semifinals and Final:

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
2012-08-13 | Rin Kanketsu | Seto Taiki | B+R | 165 | sgf
2012-08-13 | O Rissei | Iyama Yuta | W+0.5 | 281 | sgf
2012-08-30 | Iyama Yuta | Rin Kanketsu | B+R | 207 | sgf