Go Player Ratings

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Arimura Hiroshi

Arimura Hiroshi (有村比呂司) has a rating of 1553, ranked 230 of 452 in professional play. Their highest rating so far is 1653 (September 21, 2017).

Arimura Hiroshi9 dan有村比呂司Nihon Ki-in Tokyo
Rating1553
Rank230
1-year change↑36
Peak rating1653
Last 10221-233
2026 record
5-6
Record since 1927
221-233
Win rate
.487

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

Professional ratingsFind a player

Rating history — professional

13 gamesHigh 1568Low 1505
50 gamesHigh 1614Low 1505
85 gamesHigh 1643Low 1505
295 gamesHigh 1653Low 1494

The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.

Recent games

Up to 20 games, newest first. “Change” is the rating movement.
DateOpponent and tournamentResultChange
August 27, 2026Ishigure IkuroOza　Colors unknown↓14
July 30, 2026Uchida ShuheiOza　Colors unknown↑28
July 2, 2026Yamada ShinjiOza　Colors unknown↑20
May 28, 2026Fukui MasaakiOza　Colors unknown↑7
May 21, 2026Ko IsoHoninbo　Colors unknown↓1
April 23, 2026Takei TaishinTengen　Colors unknown↓8
April 16, 2026Yo ChitoJudan　Colors unknown↓5
March 12, 2026Kobayashi KoichiJudan　Colors unknown↑23
March 5, 2026Mizokami DaisukeGosei Preliminary C　as Black↓18
February 26, 2026Uchida ShuheiKisei First Tournament Preliminary Round 2　Colors unknown↓5
January 22, 2026Nakayama KaoruKisei First Tournament Preliminary Round 1　Colors unknown↑3
December 18, 2025Rin KanketsuMeijin　Colors unknown↓2
November 20, 2025Miyazaki RyutaroMeijin　Colors unknown↑10
September 15, 2025Bian WenkaiSGW Cup Chuyo Preliminary Round 1　as White↓13
August 11, 2025Miura TaroRyusei　Colors unknown↓1
July 24, 2025Kibe NatsukiTengen　Colors unknown↓14
July 10, 2025Numadate SakiyaOza　Colors unknown↓8
May 22, 2025Obuchi KotaroGosei　Colors unknown↓7
April 24, 2025Kataoka SatoshiHoninbo　Colors unknown↓8
April 17, 2025Han ZenkiMeijin　Colors unknown↓9

Head-to-head

Up to 10 opponents, most-played first. Records are from Arimura Hiroshi's point of view; jigo and no-result games are not counted as wins or losses. Only games from 1927 onward are included.
OpponentTotalAs BlackAs White
Kurotaki Masanori4-2.6670-01-0
Takemiya Masaki1-5.1670-10-2
Uchida Shuhei2-3.4001-00-0
Ko Iun3-2.6001-00-0
Ishida Yoshio2-3.4000-11-1
Morita Michihiro3-2.6000-02-1
Konagai Masaru4-1.8000-01-0
Komatsu Hideki2-3.4000-10-0
Takano Hideki1-3.2500-00-0
Yoda Norimoto0-4.0000-10-2

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.

YearRecordWin rate
20265-6.455
20255-11.313
202410-10.500
20235-9.357
202212-7.632
20219-11.450
202011-7.611
201911-11.500
20188-12.400
201713-13.500
201612-12.500
201511-8.579
20144-4.500
20137-5.583
20126-8.429
20114-7.364
20102-2.500
20090-1.000
20080-1.000
20070-2.000
20067-7.500
20055-9.357
200411-11.500
200315-10.600
20027-6.538
20010-3.000
20001-1.500
19990-2.000
19981-2.333
19970-2.000
19962-2.500
19954-3.571
19940-1.000
19932-4.333
19925-6.455
19919-9.500
199015-7.682
19892-1.667
Total221-233.487

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