66th Honinbo

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The 66th Honinbo began league play on 7 October 2010 and completed on July 21, 2011. Title holder Yamashita Keigo retained his title over challenger Hane Naoki by a score of 4-3. Yamashita Keigo won the first three games, Hane Naoki the next three, and Yamashita Keigo the final game. [1]

Contents

Preliminary tournament

The preliminary tournament started on 8 April 2010. Hane Naoki, Iyama Yuta, Takao Shinji, and Cho U retained their place in the Honinbo league from the 65th Honinbo. These players were joined by the winners of the preliminary tournament: Cho Sonjin, Seto Taiki, O Rissei, and Kobayashi Satoru.

 
Quarter-finalsSemi-finalsFinal
 
          
 
13 May
 
 
Yamashiro Hiroshi 1
 
17 June
 
Fujita Akihiko 0
 
Yamashiro Hiroshi1
 
27 May
 
Takashima Takeshi0
 
Goto Shungo 0
 
12 August
 
Takashima Takeshi 1
 
Yamashiro Hiroshi0
 
20 May
 
Cho Sonjin1
 
Ohashi Hirofumi 0
 
1 July
 
Uchida Shuhei 1
 
Uchida Shuhei0
 
27 May
 
Cho Sonjin1
 
Cho Sonjin 1
 
 
Yamada Kimio 0
 
 
Quarter-finalsSemi-finalsFinal
 
          
 
13 May
 
 
Hoshino Masaki 0
 
10 June
 
Kataoka Satoshi 1
 
Kataoka Satoshi1
 
13 May
 
Obuchi Morito0
 
Obuchi Morito 1
 
29 July
 
Yasuda Yasutoshi 0
 
Kataoka Satoshi0
 
13 May
 
Seto Taiki1
 
Yamada Noriyoshi 0
 
24 June
 
Akiyama Jiro 1
 
Akiyama Jiro0
 
27 May
 
Seto Taiki1
 
Seto Taiki 1
 
 
Mimura Tomoyasu 0
 
 
Quarter-finalsSemi-finalsFinal
 
          
 
13 May
 
 
Nakane Naoyuki 0
 
24 June
 
Nakano Hironari 1
 
Nakano Hironari0
 
3 June
 
Kono Rin1
 
Ogata Masaki 0
 
2 September
 
Kono Rin 1
 
Kono Rin0
 
20 May
 
O Rissei1
 
O Rissei 1
 
15 July
 
Mochizuki Kenichi 0
 
O Rissei1
 
27 May
 
Yuki Satoshi0
 
Kamimura Haruo 0
 
 
Yuki Satoshi 1
 
 
Quarter-finalsSemi-finalsFinal
 
          
 
22 April
 
 
O Meien 0
 
10 June
 
Kobayashi Satoru 1
 
Kobayashi Satoru1
 
13 May
 
Ishida Atsushi0
 
Shida Tatsuya 0
 
19 August
 
Ishida Atsushi 1
 
Kobayashi Satoru1
 
3 June
 
Suzuki Shinji0
 
Mizokami Tomochika 0
 
24 June
 
Suzuki Shinji 1
 
Suzuki Shinji1
 
13 May
 
Cho Chikun0
 
Cho Chikun 1
 
 
Takemiya Masaki 0
 

League play

League play commenced on 7 October after the preliminaries, which finished on 2 September. Hane Naoki, who lost the Honinbo title to Yamashita Keigo the year prior, won the right to challenge Keigo for the title. [1]

PlayerH.N.I.Y.T.S.C.U.O.R.K.S.C.S.S.T.RecordNotes
Hane Naoki B+RW+RXW+0.5B+RW+RB+R6–1Challenger
Iyama Yuta XB+RXXW+RB+RW+R4–3
Takao Shinji XXB+1.5XXW+RX2–5Eliminated
Cho U W+RB+0.5XB+3.5XB+RX4–3
O Rissei XW+RB+RXXXB+R3–4Eliminated
Kobayashi Satoru XXW+2.5B+4.5W+RXX3–4Eliminated
Cho Sonjin XXXXB+RW+11.5X2–5Eliminated
Seto Taiki XXW+RB+RXB+3.5W+R4–3

Finals

Player
1
2
3
4
5
6
7
T
Yamashita Keigo
(Honinbo)
W+7.5B+RW+1.5W+4.54
Hane Naoki
(Challenger)
W+0.5B+RW+7.53

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References

  1. 1 2 "66th Honinbo-sen". igokisen. Retrieved 21 July 2011.