Sekiyama Toshio

Sekiyama Toshio (関山利夫) has a rating of 1620.

Retired. The rating shown is the rating at retirement.

Sekiyama Toshio9 dan関山利夫Kansai Ki-in

Rating1620

Rank—

1-year change—

Peak rating—

Last 1058-78

1992 record: 0-1
Record since 1927: 58-78(1 jigo)
Win rate: .426

Rating at retirement (not included in the rating list)

The rating is calculated from published game results. It does not include any adjustment for playing Black.

Professional ratings Find a player

Recent games

Up to 20 games, newest first. “Change” is the rating movement.
Date	Opponent and tournament	Result	Change
April 13, 1992	Ohira ShuzoNHK Cup Round 1　as Black	Loss	↓6
November 14, 1991	Koyama YasuoKansai Ki-in First Place Tournament Round 2　as White	Win	↑13
November 5, 1991	Koyama YasuoKansai Ki-in First Place Tournament Round 1　as Black	Win	↑14
June 14, 1990	Sonoda YuichiKisei　as White	Loss	↓8
March 9, 1989	Ishikura NoboruJudan 3rd Preliminary　as White	Loss	↓18
December 17, 1987	Ishii KunioKisei 9 dan Section　as White	Loss	↓15
October 15, 1987	Miyazawa GoroGosei Round 1　as White	Loss	↓12
January 29, 1987	Kato MasaoGosei Round 2　as White	Loss	↓3
December 4, 1986	Kubouchi ShuchiKisei 9 dan Section　as White	Loss	↓20
November 27, 1986	Kosugi KiyoshiGosei Round 1　as Black	Win	↑9
April 24, 1986	Yamashiro HiroshiOza Round 1　as Black	Loss	↓6
January 30, 1986	Takagi ShoichiKisei 9 dan Section　as Black	Loss	↓10
December 5, 1985	Hikosaka NaotoOza 3rd Preliminary　as White	Win	↑11
September 19, 1985	Kanno KiyonoriMeijin 3rd Preliminary　as White	Loss	↓20
June 20, 1985	Ohira ShuzoTengen Round 2　as White	Loss	↓13
April 11, 1985	Kobayashi SatoruGosei Round 3　as White	Loss	↓12
March 28, 1985	Kataoka SatoshiTengen Round 1　as White	Win	↑20
February 21, 1985	Shiraishi YutakaKisei 9 dan Section　as White	Loss	↓14
February 7, 1985	Hikosaka NaotoGosei Round 2　as Black	Win	↑15
January 1, 1985	Kobayashi KoichiNHK Cup Round 2　as White	Loss	↓7

Head-to-head

Up to 10 opponents, most-played first. Records are from Sekiyama Toshio's point of view; jigo and no-result games are not counted as wins or losses. Only games from 1927 onward are included.
Opponent	Total	As Black	As White
Ohira Shuzo	0-6.000	0-2	0-4
Hashimoto Shoji	1-4.200	1-3	0-1
Shimamura Toshihiro	3-2.600	3-0	0-2
Hashimoto Utaro	1-3.250	1-1	0-2
Fujisawa Hosai	2-2.500	1-0	1-2
Sugiuchi Masao	2-2.500	0-1	2-1
Kato Masao	1-2.333	1-0	0-2
Magari Reiki	3-01.000	3-0	0-0
Yamabe Toshiro	1-2.333	1-0	0-2
Sato Sunao	1-2.333	0-2	1-0

Record by year

Counted by calendar year, January to December (default wins and losses are included; jigo and no-result games are not). Only games from 1927 onward are counted, so these totals do not match the career records published by the two Ki-in.

Year	Record	Win rate
1992	0-1	.000
1991	2-0	1.000
1990	0-1	.000
1989	0-1	.000
1987	0-3	.000
1986	1-3	.250
1985	4-5	.444
1984	6-3	.667
1983	2-5	.286
1982	6-2	.750
1981	3-5	.375
1980	7-6	.538
1979	2-3	.400
1978	3-2	.600
1977	2-4	.333
1976	4-4(1 jigo)	.500
1975	1-2	.333
1973	0-1	.000
1972	0-4	.000
1971	4-7	.364
1970	4-2	.667
1969	0-1	.000
1968	1-1	.500
1967	2-2	.500
1966	0-2	.000
1965	2-2	.500
1964	1-0	1.000
1963	0-1	.000
1962	1-3	.250
1960	0-1	.000
1957	0-1	.000
Total	58-78(1 jigo)	.426

Calculated from games played between 1927 and 2026 (as of September 17, 2026).