Iwamoto Kaoru

Iwamoto Kaoru (岩本薫) has a rating of 1509.

Retired. The rating shown is the rating at retirement.

Iwamoto Kaoru岩本薫Nihon Ki-in

Rating1509

Rank—

1-year change—

Peak rating—

Last 10202-193

1983 record: 0-1
Record since 1927: 202-193(1 jigo)
Win rate: .511

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
January 27, 1983	Shiraishi YutakaKisei 9 dan Section　as White	Loss	↓7
December 23, 1982	Ohira ShuzoJudan 2nd Preliminary　as Black	Loss	↓8
December 16, 1982	Koyama YasuoKisei 9 dan Section　as White	Win	↑18
October 21, 1982	Kaji KazutameTengen 2nd Preliminary　as White	Loss	↓22
October 7, 1982	Ko MoseiOza 2nd Preliminary　as Black	Loss	↓21
September 30, 1982	Asano HideakiJudan 2nd Preliminary　as Black	Win	↑15
September 23, 1982	Rin KaihoGosei Preliminary　as Black	Loss	↓5
July 24, 1982	O RisseiGosei Preliminary　as White	Win	↑24
June 17, 1982	Naganuma MakotoOza 2nd Preliminary　as Black	Win	↑7
March 25, 1982	Izumitani MasanoriHoninbo 2nd Preliminary　as White	Loss	↓20
February 4, 1982	Kudo NorioMeijin 2nd Preliminary　as White	Loss	↓8
January 28, 1982	Sakakibara ShojiKisei 9 dan Section　as Black	Loss	↓14
November 19, 1981	Kitamura HiroshiTengen 2nd Preliminary　as Black	Loss	↓28
October 15, 1981	Kamimura KunioOza 2nd Preliminary　as White	Loss	↓15
September 17, 1981	Ohira ShuzoJudan 2nd Preliminary　as White	Loss	↓14
September 3, 1981	Takagi ShoichiMeijin 2nd Preliminary　as White	Loss	↓9
July 23, 1981	Kamimura HaruoGosei Preliminary　as White	Loss	↓18
July 16, 1981	Kataoka SatoshiOza 2nd Preliminary　as White	Win	↑19
June 18, 1981	Hayashi YutaroGosei Preliminary　as Black	Win	↑7
May 21, 1981	Miyazawa GoroMeijin 2nd Preliminary　as Black	Win	↑17

Head-to-head

Up to 10 opponents, most-played first. Records are from Iwamoto Kaoru'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
Hashimoto Utaro	10-9.526	7-3	3-6
Fujisawa Hosai	5-14.263	2-6	3-8
Fujisawa Shuko	9-5.643	7-2	2-3
Sugiuchi Masao	2-10.167	1-4	1-6
Takagawa Shukaku	3-9.250	2-2	1-7
Sakata Eio	4-7.364	4-3	0-4
Yamabe Toshiro	4-6.400	4-0	0-6
Shimamura Toshihiro	6-4.600	4-1	2-3
Kitani Minoru	3-6.333	1-5	2-1
Kudo Norio	2-5.286	1-0	1-5
Kuroda Yukio	5-1.833	2-1	3-0
Hoshino Toshi	3-3.500	1-1	2-2
Miyashita Shuyo	2-4.333	0-2	2-2
Nakamura Yutaro	4-1.800	4-0	0-1
Kano Yoshinori	3-2.600	3-0	0-2
Magari Reiki	5-01.000	2-0	3-0
Chino Tadahiko	4-1.800	2-0	2-1
Kajiwara Takeo	1-4.200	1-2	0-2
Sakakibara Shoji	3-2.600	2-2	1-0
Okubo Ichigen	3-2.600	3-1	0-1
Handa Dogen	2-3.400	2-2	0-1
Takagawa Kaku	2-3.400	1-1	1-2
Kada Katsuji	2-3.400	1-0	1-3
Maeda Nobuaki	4-1.800	3-0	1-1

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
1983	0-1	.000
1982	4-7	.364
1981	4-8	.333
1980	11-8	.579
1979	9-7	.563
1978	6-6	.500
1977	4-7	.364
1976	3-7	.300
1975	8-3	.727
1974	10-11	.476
1973	10-7	.588
1972	7-3	.700
1971	6-8	.429
1970	8-4	.667
1969	1-6	.143
1968	13-7	.650
1967	8-4	.667
1966	2-2	.500
1965	7-3	.700
1964	7-6	.538
1963	11-5	.688
1961	2-1	.667
1960	9-10	.474
1959	6-12	.333
1958	9-6	.600
1957	9-11(1 jigo)	.450
1956	8-6	.571
1955	4-5	.444
1954	1-2	.333
1953	1-2	.333
1952	1-1	.500
1951	1-1	.500
1950	2-8	.200
1946	2-0	1.000
1945	7-3	.700
1944	1-0	1.000
1942	0-2	.000
1941	0-1	.000
1939	0-2	.000
Total	202-193(1 jigo)	.511

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