66th Honinbo - Misplaced Pages

2010–2011 Go tournament

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.

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-finals		Semi-finals		Final

13 May

Yamashiro Hiroshi	1
		17 June
Fujita Akihiko	0
		Yamashiro Hiroshi	1
27 May
		Takashima Takeshi	0
Goto Shungo	0
				12 August
Takashima Takeshi	1
				Yamashiro Hiroshi	0
20 May
				Cho Sonjin	1
Ohashi Hirofumi	0
		1 July
Uchida Shuhei	1
		Uchida Shuhei	0
27 May
		Cho Sonjin	1
Cho Sonjin	1

Yamada Kimio	0

Quarter-finals		Semi-finals		Final

13 May

Hoshino Masaki	0
		10 June
Kataoka Satoshi	1
		Kataoka Satoshi	1
13 May
		Obuchi Morito	0
Obuchi Morito	1
				29 July
Yasuda Yasutoshi	0
				Kataoka Satoshi	0
13 May
				Seto Taiki	1
Yamada Noriyoshi	0
		24 June
Akiyama Jiro	1
		Akiyama Jiro	0
27 May
		Seto Taiki	1
Seto Taiki	1

Mimura Tomoyasu	0

Quarter-finals		Semi-finals		Final

13 May

Nakane Naoyuki	0
		24 June
Nakano Hironari	1
		Nakano Hironari	0
3 June
		Kono Rin	1
Ogata Masaki	0
				2 September
Kono Rin	1
				Kono Rin	0
20 May
				O Rissei	1
O Rissei	1
		15 July
Mochizuki Kenichi	0
		O Rissei	1
27 May
		Yuki Satoshi	0
Kamimura Haruo	0

Yuki Satoshi	1

Quarter-finals		Semi-finals		Final

22 April

O Meien	0
		10 June
Kobayashi Satoru	1
		Kobayashi Satoru	1
13 May
		Ishida Atsushi	0
Shida Tatsuya	0
				19 August
Ishida Atsushi	1
				Kobayashi Satoru	1
3 June
				Suzuki Shinji	0
Mizokami Tomochika	0
		24 June
Suzuki Shinji	1
		Suzuki Shinji	1
13 May
		Cho Chikun	0
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.

Player	H.N.	I.Y.	T.S.	C.U.	O.R.	K.S.	C.S.	S.T.	Record	Notes
Hane Naoki	–	B+R	W+R	X	W+0.5	B+R	W+R	B+R	6–1	Challenger
Iyama Yuta	X	–	B+R	X	X	W+R	B+R	W+R	4–3
Takao Shinji	X	X	–	B+1.5	X	X	W+R	X	2–5	Eliminated
Cho U	W+R	B+0.5	X	–	B+3.5	X	B+R	X	4–3
O Rissei	X	W+R	B+R	X	–	X	X	B+R	3–4	Eliminated
Kobayashi Satoru	X	X	W+2.5	B+4.5	W+R	–	X	X	3–4	Eliminated
Cho Sonjin	X	X	X	X	B+R	W+11.5	–	X	2–5	Eliminated
Seto Taiki	X	X	W+R	B+R	X	B+3.5	W+R	–	4–3

Finals

Player	1	2	3	4	5	6	7	T
Yamashita Keigo (Honinbo)	W+7.5	B+R	W+1.5				W+4.5	4
Hane Naoki (Challenger)				W+0.5	B+R	W+7.5		3

References

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

v t e 2011 in go
International	BC Card Cup LG Cup Samsung Cup Chunlan Cup Fujitsu Cup
Continental	Asian TV Cup Nongshim Cup Bosai Cup Japan-Taiwan Jingying Zhaoshang Cup
China	Mingren Tianyuan Quzhou-Lanke Cup Chang-ki Cup Ahan Tongshan Cup Ricoh Cup Qiwang Longchen CCTV Cup South-West Qiwang Xinren Wang Ricoh Xinxiu Cup Chinese A League
Japan	Kisei Meijin Honinbo Tengen Oza Judan Gosei Agon Cup Ryusei NHK Cup Shinjin-O NEC Cup Okan Kansai Ki-in 1st Place Igo Masters Cup Daiwa Cup
Korea	Guksu Myungin Siptan GS Caltex Cup Prices Information Cup Chunwon KBS Cup Maxim Cup Daejoo Cup Korean Baduk League
Taiwan	Qiwang Tianyuan Wangzuo Guoshou Haifong Cup Qisheng Zhonghuan Cup Aixin Cup Donggang Cup Siyuan Cup

v t e Honinbo
Past editions	1941 1943 1945 1947 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021
Past winners	Riichi Sekiyama (1941) Utaro Hashimoto (1943) Kaoru Iwamoto (1945–1947) Utaro Hashimoto (1950–1951) Kaku Takagawa (1952–1960) Eio Sakata (1961–1967) Rin Kaiho (1968–1970) Yoshio Ishida (1971–1975) Masaki Takemiya (1976) Masao Kato (1977–1979) Masaki Takemiya (1980) Cho Chikun (1981–1982) Rin Kaiho (1983–1984) Masaki Takemiya (1985–1988) Cho Chikun (1989–1998) Cho Son-jin (1999) Wang Ming-wan (2000–2001) Masao Kato (2002) Cho U (2003–2004) Shinji Takao (2005–2007) Naoki Hane (2008–2009) Keigo Yamashita (2010–2011) Yuta Iyama (2012–)
Honorary winners	Kaku Takagawa Eio Sakata Yoshio Ishida Cho Chikun Yuta Iyama

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