Okan title

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# Okan title games

This page gives the title games (in SGF format) for the Okan (王冠) title.

The Okan title is a 1-game match between the winner of a 12-player knockout tournament and the previous title holder. It is open only to players in the Nagoya branch of the Nihon Ki-in. It is held every year (but up to the 15th Okan, every year-and-a-half).

Komi was 4.5 up to 1974, 5.5 in 1975-2002, and 6.5 from 2003.

For the early years, no game records are available.

# | year | winner
--- | --- | ---
1 | 1950 | Sakai Toshio
2 | 1952 | Sakai Toshio
3 | 1954 | Sakai Toshio
4 | 1955 | Sakai Toshio

# | year | winner | loser
--- | --- | --- | ---
5 | 1957 | Shimamura Toshihiro | Sakai Toshio
6 | 1959 | Shimamura Toshihiro | Isogawa Masao
7 | 1960 | Shimamura Toshihiro | Isogawa Masao
8 | 1962 | Shimamura Toshihiro | Isogawa Masao
9 | 1964 | Shimamura Toshihiro | Isogawa Masao
10 | 1965 | Shimamura Toshihiro | Iwata Tatsuaki
11 | 1967 | Iwata Tatsuaki | Shimamura Toshihiro
12 | 1969 | Iwata Tatsuaki | Shimamura Toshihiro
13 | 1970 | Iwata Tatsuaki | Tsuchida Masamitsu
14 | 1972 | Hane Yasumasa | Iwata Tatsuaki
15 | 1974 | Shimamura Toshihiro | Hane Yasumasa
16 | 1975 | Shimamura Toshihiro | Hane Yasumasa
17 | 1976 | Iwata Tatsuaki | Shimamura Toshihiro
18 | 1977 | Yamashiro Hiroshi | Iwata Tatsuaki

Game records for the title games, starting at 1978.

# | date | winner | loser | #mv | result | sgf
--- | --- | --- | --- | --- | --- | ---
19 | 1978-10-26 | Hane Yasumasa | Yamashiro Hiroshi | 198 | W+R | sgf
20 | 1979-10-11 | Iwata Tatsuaki | Hane Yasumasa | 265 | B+5.5 | sgf
21 | 1980-10-23 | Iwata Tatsuaki | Baba Shigeru | 101 | B+R | sgf
22 | 1981-11-05 | Yamashiro Hiroshi | Iwata Tatsuaki | 234 | B+2.5 | sgf
23 | 1982-10-21 | Yamashiro Hiroshi | Hane Yasumasa | 205 | B+R | sgf
24 | 1983-11-24 | Hane Yasumasa | Yamashiro Hiroshi | 172 | W+R | sgf
25 | 1984-11-22 | Yamashiro Hiroshi | Hane Yasumasa | 168 | W+R | sgf
26 | 1985-11-21 | Yamashiro Hiroshi | Iwata Tatsuaki | 195 | B+R | sgf
27 | 1986-11-20 | Yamashiro Hiroshi | Hane Yasumasa | 205 | B+R | sgf
28 | 1987-11-12 | Yamashiro Hiroshi | Tsuchida Masamitsu | 263 | B+4.5 | sgf
29 | 1988-12-08 | Ogata Masaki | Yamashiro Hiroshi | 180 | W+R | sgf
30 | 1989-11-09 | Ogata Masaki | Iwata Tatsuaki | 262 | B+1.5 | sgf
31 | 1990-11-02 | Ogata Masaki | Hane Yasumasa | 172 | W+R | sgf
32 | 1991-11-07 | Ogata Masaki | Hane Yasumasa | 232 | W+R | sgf
33 | 1992-11-05 | Hane Yasumasa | Ogata Masaki | 190 | W+R | sgf
34 | 1993-11-10 | Yamashiro Hiroshi | Hane Yasumasa | 242 | B+0.5 | sgf
35 | 1994-11-10 | Yamashiro Hiroshi | Ogata Masaki | 246 | W+1.5 | sgf
36 | 1995-11-16 | Yamashiro Hiroshi | Hane Yasumasa | 219 | B+R | sgf
37 | 1996-11-14 | Yamashiro Hiroshi | Hikosaka Naoto | 206 | W+0.5 | sgf
38 | 1997-11-20 | Nakano Hironari | Yamashiro Hiroshi | 253 | B+3.5 | sgf
39 | 1998-11-18 | Nakano Hironari | Yamashiro Hiroshi | 176 | W+R | sgf
40 | 1999-10-19 | Hane Naoki | Nakano Hironari | 144 | W+R | sgf
41 | 2000-11-20 | Yamashiro Hiroshi | Hane Naoki | 213 | B+R | sgf
42 | 2001-11-21 | Yamashiro Hiroshi | Matsuoka Hideki | 212 | W+7.5 | sgf
43 | 2002-11-14 | Hane Naoki | Yamashiro Hiroshi | 220 | W+2.5 | sgf
44 | 2003-11-10 | Hane Naoki | Hikosaka Naoto | 286 | W+3.5 | sgf
45 | 2004-11-17 | Hane Naoki | Yamashiro Hiroshi | 175 | B+R | sgf
46 | 2005-11-28 | Yamashiro Hiroshi | Hane Naoki | 283 | B+R | sgf
47 | 2006-11-27 | Matsuoka Hideki | Yamashiro Hiroshi | 183 | B+R | sgf
48 | 2007-11-28 | Hane Naoki | Matsuoka Hideki | 139 | B+R | sgf
49 | 2008-11-17 | Hane Naoki | Yamashiro Hiroshi | 192 | W+R | sgf
50 | 2009-11-26 | Hane Naoki | Yamashiro Hiroshi | 176 | W+R | sgf
51 | 2010-11-25 | Yamashiro Hiroshi | Hane Naoki | 242 | W+4.5 | sgf
52 | 2011-11-16 | Hane Naoki | Yamashiro Hiroshi | 299 | B+5.5 | sgf
53 | 2012-11-27 | Hane Naoki | Nakano Hironari | 265 | W+3.5 | sgf
54 | 2013-11-29 | Hane Naoki | Nakano Hironari | 237 | B+R | sgf
55 | 2014-11-29 | Hane Naoki | Yamashiro Hiroshi | 198 | W+R | sgf
56 | 2015-12-04 | Hane Naoki | Ogata Masaki | 150 | W+R | sgf