59th Oza-sen
Host Organization : Nihon Keizai Shimbun
Title match
| Players | 1st round 10-20 Meguro Tokyo |
2nd round 11-11 Kobe Hyogo |
3rd round 11-24 Tsuruoka Yamagata |
4th round 12-08 Yokohama Kanagawa |
5th round 12-15 Izunokuni Shizuoka |
|---|---|---|---|---|---|
| Cho U (Oza) | W+3.5 | B+1.5 | W+R | ||
| Hane Naoki (Gosei) |
Cho U kept the title by 3-0.
The win-loss records; Cho U 12-13 Hane Naoki.
The win-loss records; Cho U 12-13 Hane Naoki.
Tournament table
| Players | 1st round | 2nd round | Semifinals | Challenger decision match |
|---|---|---|---|---|
| Hane Naoki(G) | Hane N B+1.5 04-28 |
Hane N W+R 05-30 |
Hane N W+R 06-20 |
Hane N W+R 09-08 |
| Kobayashi Satoru(9d) | ||||
| Yoda Norimoto(9d) | Cho Chikun W+R 05-19 | |||
| Cho Chikun(25H) | ||||
| So Yokoku(8d) | Murakawa D W+R 05-12 |
Mitani T B+R 06-09 | ||
| Murakawa Daisuke(7d) | ||||
| Mitani Tetsuya(7d) | Mitani T B+0.5 04-14 | |||
| Mochizuki Kenichi(7d) | ||||
| Iyama Yuta(M) | Iyama Y B+6.5 04-14 |
Iyama Y W+R 06-09 |
Iyama Y W+R 07-14 | |
| Imamura Toshiya(9d) | ||||
| Matsumoto Takehisa(7d) | Nakano Y B+R 05-12 | |||
| Nakano Yasuhiro(9d) | ||||
| Yamashiro Hiroshi(9d) | Yamashita K W+5.5 04-21 |
Yamada K W+R 05-19 | ||
| Yamashita Keigo(H) | ||||
| Yamada Kimio(9d) | Yamada K W+R 04-21 | |||
| Kono Rin(9d) |
Note; (M); Meijin (H); Honinbo (G); Gosei (25H); 25th Honinbo History; 2011-04-06 Page was created. 2011-04-09,16,22,29 Updated. 2011-05-06,13,21,27 Updated. 2011-06-03,10,17,25 Updated. 2011-07-09,15 Updated. 2011-09-03,08 Updated. 2011-10-22 Updated. 2011-11-12,27 Updated.
The last preliminary tournament
| Players | 1st round | Final |
|---|---|---|
| Kiyonari Tetsuya(9d) | Kobayashi S W+R 04-07 | |
| Kobayashi Satoru(9d) | Kobayashi S B+3.5 01-27 | |
| Ko Iso(7d) | ||
| Sakai Takeshi(9d) | Cho Chikun B+R 02-24 | |
| Nakamura Shinya(8d) | Cho Chikun W+R 02-03 | |
| Cho Chikun(25H) | ||
| Yoda Norimoto(9d) | Yoda N B+R 03-24 | |
| Ogaki Yusaku(9d) | Ogaki Y W+7.5 02-17 | |
| Ri Ishu(7d) | ||
| Fujii Shuya(6d) | Murakawa D B+4.5 02-10 | |
| Murakawa Daisuke(7d) | Murakawa D B+R 01-20 | |
| Ishida Yoshio(24H) | ||
| Shida Tatsuya(4d) | Nakano Y B+R 03-17 | |
| Nakano Yasuhiro(9d) | Nakano Y B+R 01-27 | |
| Matsuoka Hideki(8d) | ||
| Mitani Tetsuya(7d) | Mitani T W+R 02-24 | |
| Ishida Atsushi(9d) | Seto T B+R 01-13 | |
| Seto Taiki(7d) | ||
| Imamura Yoshiaki(9d) | Matsumoto T W+R 03-10 | |
| Matsumoto Takehisa(7d) | Matsumoto T B+0.5 02-03 | |
| Takao Shinji(9d) | ||
| So Yokoku(8d) | So Yokoku B+R 02-24 | |
| Han Zenki(7d) | Han Zenki B+R 01-20 | |
| Anzai Nobuaki(6d) | ||
| Mimura Tomoyasu(9d) | Imamura T W+R 02-17 | |
| Imamura Toshiya(9d) | Imamura T W+R 01-20 | |
| Sasaka Shiro(8d) | ||
| Kono Rin(9d) | Kono R B+R 03-31 | |
| Otake Hideo(HG) | Yuki S W+1.5 03-03 | |
| Yuki Satoshi(T) | ||
| Takemiya Masaki(9d) | Yamashiro H B+0.5 03-03 | |
| Tsuruyama Atsushi(7d) | Yamashiro H B+2.5 02-10 | |
| Yamashiro Hiroshi(9d) | ||
Note; (T); Tengen (25H); 25th Honinbo (24H); 24th Honinbo History; 2011-01-07 Page was created. 2011-01-14,21,28 Updated. 2011-02-04,11,18,25 Updated. 2011-03-04,11,14,18,25 Updated. 2011-04-02,09 Updated.