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The Pro-Ama Honinbo Match

Professional go players have a Honinbo title since 1941. Amateurs have a Amateur Honinbo title since 1955. Since 1963 there is a 1-game match between the pro and ama Honinbo title holders, with varying handicap and komi. Some details are given here (Japanese). See also SL.

The 54th Pro-Ama Honinbo Match was held on 2016-12-18 between Iyama Yuta, the 71st Honinbo, and Ozeki Minoru, the 62nd Amateur Honinbo.

The table below gives the results, sometimes the game itself. In all cases, the amateur played Black. Here "ha" means handicap. Starting from the 33rd edition, B can freely choose where to place the handicap stones. Negative ("reverse") komi means that W pays B.

# year black white ha komi result
1 1963 Harada Minoru Sakata Eio 2 0 B+6
2 1964 Harada Minoru Sakata Eio 2 0 B+R
3 1965 Kikuchi Yasuro Sakata Eio 0 −5 B+8
4 1966 Kikuchi Yasuro Sakata Eio 0 −4 W+3
5 1967 Murakami Bunsho Sakata Eio 0 −5 B+2
6 1968 Harada Minoru Rin Kaiho 0 −3.5 W+R
7 1969 Kikuchi Yasuro Rin Kaiho 0 −4.5 B+0.5
8 1970 Narumi Naoshi Rin Kaiho 0 −3.5 W+R
9 1971 Miura Hiroshi Ishida Yoshio 2 0 W+R
10 1972 Kikuchi Yasuro Ishida Yoshio 0 −3.5 W+R
11 1973 Kikuchi Yasuro Ishida Yoshio 0 −4.5 W+0.5
12 1974 Miura Hiroshi Ishida Yoshio 0 −4.5 W+R
13 1975 Taguchi Tetsuro Ishida Yoshio 0 −4.5 W+R
14 1976 Murakami Bunsho Takemiya Masaki 0 −4 W+R
15 1977 Kikuchi Yasuro Kato Masao 0 −5.5 W+3.5
16 1978 Murakami Bunsho Kato Masao 0 −4.5 W+18.5
17 1979 Miura Hiroshi Kato Masao 0 −5.5 W+R
18 1980 Miura Hiroshi Takemiya Masaki 2 0 W+R
19 1981 Murakami Bunsho Cho Chikun 0 −5.5 W+6.5
20 1982 Kikuchi Yasuro Cho Chikun 2 0 B+R
21 1983 Kikuchi Yasuro Rin Kaiho 0 −5 W+4
22 1984 Kikuchi Yasuro Rin Kaiho 2 2.5 B+4.5
23 1985 Nakazono Seizo Takemiya Masaki 0 −5 B+7
24 1986 Hirata Hironori Takemiya Masaki 0 −2.5 W+R
25 1987 Nakazono Seizo Takemiya Masaki 0 −5 B+R
26 1988 Hirata Hironori Takemiya Masaki 0 −2.5 W+8.5
27 1989 Harada Minoru Cho Chikun 0 −5 Jigo
28 1990 Nakazono Seizo Cho Chikun 0 −5 W+R
29 1991 Tanaka Masato Cho Chikun 2 2.5 W+R
30 1992 Nakazono Seizo Cho Chikun 2 0 W+3
31 1993 Hirata Hironori Cho Chikun 2 −2.5 W+R
32 1994 Takano Hideki Cho Chikun 2 −5 W+R
33 1995 Nakazono Seizo Cho Chikun 3 2.5 B+10.5
34 1996 Muraoka Toshihiko* Cho Chikun 2 −5 W+R
35 1997 Harada Minoru Cho Chikun 3 2.5 W+1.5
36 1998 Tanaka Masato Cho Chikun 3 0 B+1
37 1999 Miura Hiroshi Cho Sonjin 3 2.5 B+10.5
38 2000 Iwai Ryuichi O Meien 2 −5 B+4
39 2001 Komori Shoji O Meien 2 −2.5 W+R
40 2002 Samejima Ichiro Kato Masao 2 −5 B+R
41 2003 Harada Minoru Cho U 2 −3 Jigo
42 2004 Tanaka Nobuhiro Cho U 2 −3 W+R
43 2005 Hiraoka Satoshi Takao Shinji 2 −6 B+5
44 2006 Murakami Fukashi Takao Shinji 2 −3 B+4
45 2007 Takizawa Yuta Takao Shinji 2 0 W+R
46 2008 Hon Seisen Hane Naoki 2 −3 B+R
47 2009 Hiraoka Satoshi Hane Naoki 2 0 B+R
48 2010 Ryu Shinhwan Yamashita Keigo 2 3 B+R
49 2011 Nakazono Seizo Yamashita Keigo 0 −6 B+7
50 2012 Hiraoka Satoshi Iyama Yuta 0 −3 W+3
51 2013 Hon Soggi Iyama Yuta 0 −6 B+R
52 2014 Hon Soggi Iyama Yuta 0 −3 W+9
53 2015 Shibano Ryunosuke Iyama Yuta 0 −6 W+R
54 2016 Ozeki Minoru Iyama Yuta 2 3 W+R
55 2017 Hayashi Takashi Iyama Yuta 2 0 W+R
56 2018 Hiraoka Satoshi Iyama Yuta 2 −3 B+R
57 2019 Ozeki Minoru Iyama Yuta 2 0 B+R
58 -
59 2021 Hiraoka Satoshi Iyama Yuta 0 −6 W+R
60 2022 Kurita Yoshiki Iyama Yuta 0 −6 W+10
61 2023 Ozeki Minoru Ichiriki Ryo 0 −6 W+7
62 2024 Ozeki Minoru Ichiriki Ryo 0 −6 W+4

*) Amateur Honinbo Sakai Hideyuki was substituted by 2nd place winner Muraoka Toshihiko.

The 1989 and 1990 matches were both held on 1990-11-25.
The 2017 match was held on 2018-01-13.
The 2018 match was held on 2019-01-26.
The 2019 match was held on 2020-02-09.
The 2020 match was cancelled.