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Tournament name Okan (Crown) Title Holders
Sponsor Chunichi Newspaper , The Central Japan Headquarters of the Nihon Ki-in
Support  -
Special assistance  -
Assistance  -
Special cooperation  -
Cooperation  -
Winner’s prize 1,700,000 (Japanese yen)
Title match, play-off one-game tournament final
Tournament system Tournament with 12 players.Winner plays in title match.
Time allowance Final, main tournament: 4 hours each.
Byo-yomi Final, main tournament: 5 minutes before end of time.
komi 6.5
Qualification for participation Professionals affiliated with the Central Japan Headquarters of the Nihon Ki-in
Rules for retaining places and seeds Loser of previous title match
Year of founding  


Term Year Winner Wins and Losses Opponent Komi
54 2013 Hane Naoki   Nakano Hironari 6.5
53 2012 Hane Naoki   Nakano Hironari 6.5
52 2011 Hane Naoki   Yamashiro Hiroshi 6.5
51 2010 Yamashiro Hiroshi   Hane Naoki 6.5
50 2009 Hane Naoki   Yamashiro Hiroshi 6.5
49 2008 Hane Naoki   Yamashiro Hiroshi 6.5
48 2007 Hane Naoki   Matsuoka Hideki 6.5
47 2006 Matsuoka Hideki   Yamashiro Hiroshi 6.5
46 2005 Yamashiro Hiroshi   Hane Naoki 6.5
45 2004 Hane Naoki   Yamashiro Hiroshi 6.5
44 2003 Hane Naoki   Hikosaka Naoto 6.5
43 2002 Hane Naoki   Yamashiro Hiroshi 5.5
42 2001 Yamashiro Hiroshi   Matsuoka Hideki 5.5
41 2000 Yamashiro Hiroshi   Hane Naoki 5.5
40 1999 Hane Naoki   Nakano Hironari 5.5
39 1998 Nakano Hironari   Yamashiro Hiroshi 5.5
38 1997 Nakano Hironari   Yamashiro Hiroshi 5.5
37 1996 Yamashiro Hiroshi   Hikosaka Naoto 5.5
36 1995 Yamashiro Hiroshi   Hane Yasumasa 5.5
35 1994 Yamashiro Hiroshi   Ogata Masaki 5.5
34 1993 Yamashiro Hiroshi   Hane Yasumasa 5.5
33 1992 Hane Yasumasa   Ogata Masaki 5.5
32 1991 Ogata Masaki   Hane Yasumasa 5.5
31 1990 Ogata Masaki   Hane Yasumasa 5.5
30 1989 Ogata Masaki   Iwata Tatsuaki 5.5
29 1988 Ogata Masaki   Yamashiro Hiroshi 5.5
28 1987 Yamashiro Hiroshi   Tsuchida Masamitsu 5.5
27 1986 Yamashiro Hiroshi   Hane Yasumasa 5.5
26 1985 Yamashiro Hiroshi   Iwata Tatsuaki 5.5
25 1984 Yamashiro Hiroshi   Hane Yasumasa 5.5
24 1983 Hane Yasumasa   Yamashiro Hiroshi 5.5
23 1982 Yamashiro Hiroshi   Hane Yasumasa 5.5
22 1981 Yamashiro Hiroshi   Iwata Tatsuaki 5.5
21 1980 Iwata Tatsuaki   Baba Shigeru 5.5
20 1979 Iwata Tatsuaki   Hane Yasumasa 5.5
19 1978 Hane Yasumasa   Yamashiro Hiroshi 5.5
18 1977 Yamashiro Hiroshi   Iwata Tatsuaki 5.5
17 1976 Iwata Tatsuaki   Shimamura Toshihiro 5.5
16 1975 Shimamura Toshihiro   Hane Yasumasa 5.5
15 1974 Shimamura Toshihiro   Hane Yasumasa 4.5
14 1972 Hane Yasumasa   Iwata Tatsuaki 4.5
13 1970 Iwata Tatsuaki   Tsuchida Masamitsu 4.5
12 1969 Iwata Tatsuaki   Shimamura Toshihiro 4.5
11 1967 Iwata Tatsuaki   Shimamura Toshihiro 4.5
10 1965 Shimamura Toshihiro   Iwata Tatsuaki 4.5
9 1964 Shimamura Toshihiro   Isogawa Masao 4.5
8 1962 Shimamura Toshihiro   Isogawa Masao 4.5
7   Shimamura Toshihiro   Iwata Tatsuaki 4.5
6   Shimamura Toshihiro   Isogawa Masao 4.5
5   Shimamura Toshihiro   - 4.5
4   Sakai Toshio   - 4.5
3   Sakai Toshio   - 4.5
2   Sakai Toshio   - 4.5
1   Sakai Toshio   - 4.5
※ : one-game tournament final
※ : Up to the 15th term, this Okan was held every year and a half.