Go Player Ratings

JAAbout ratings

Koike Yoshihiro

Koike Yoshihiro (小池芳弘) has a rating of 2095, ranked 13 of 452 in professional play. Their highest rating so far is 2117 (March 5, 2026).

Koike Yoshihiro7 dan小池芳弘Nihon Ki-in Tokyo
Rating2095
Rank13
1-year change↑42
Peak rating2117
Last 10292-160
2026 record
12-6
Record since 1927
292-160
Win rate
.646

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

Professional ratingsFind a player

Rating history — professional

33 gamesHigh 2117Low 2030
112 gamesHigh 2117Low 1894
212 gamesHigh 2117Low 1894
438 gamesHigh 2117Low 1497

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
September 14, 2026Oomote TakutoHoninbo Preliminary A　as White↑8
September 7, 2026Kuwabara ItsukiGosei Preliminary A　as White↑9
August 10, 2026Miyatani FugaHiroshima Aluminum Cup Wakagoi Preliminary Semifinal　Colors unknown↑2
August 10, 2026Hirose YuichiHiroshima Aluminum Cup Wakagoi Preliminary Final　Colors unknown↓17
August 6, 2026Hirata TomoyaKisei League B1　as Black↑20
July 2, 2026O RisseiKisei League B1　as White↑7
June 11, 2026Sun ZheKisei League B1　as White↓20
May 28, 2026Iyama YutaTengen Round 2　as White↓7
May 21, 2026Muramoto WataruKisei League B1　as Black↑9
May 17, 2026Hon AkiyoshiNHK Cup Round 1　as White↑8
April 27, 2026Fukuoka KotaroKisei League B1　as Black↓11
March 12, 2026Ohashi HirofumiMeijin　Colors unknown↓28
March 5, 2026Murakawa DaisukeKisei　as Black↑16
March 4, 2026Murakawa DaisukeKisei League B1　as Black↑18
February 12, 2026So YokokuTengen Round 1　as White↑7
February 5, 2026Adachi ToshimasaKisei League B1　as White↑12
January 15, 2026Omori YasushiMeijin　Colors unknown↑2
January 8, 2026Kyo KagenJudan Round 4　as Black↓6
December 18, 2025O YuininMeijin　Colors unknown±0
December 11, 2025Ichiriki RyoJudan Round 3　as White↑30

Head-to-head

Up to 10 opponents, most-played first. Records are from Koike Yoshihiro'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
Sada Atsushi5-3.6251-22-1
Shibano Toramaru1-7.1251-30-3
Numadate Sakiya3-4.4290-12-1
Hirose Yuichi2-5.2860-22-0
Rin Kanketsu3-4.4290-12-1
Onishi Kenya4-2.6671-02-0
Motoki Katsuya0-6.0000-30-2
Anzai Nobuaki4-2.6671-11-1
Tsuruyama Atsushi2-4.3331-20-1
Ueno Asami3-3.5000-32-0
Mutsuura Yuta2-4.3331-21-1
U Boi4-2.6671-02-2
Fujita Akihiko3-3.5002-10-1
Sun Zhe1-5.1671-10-4
Otake Yu4-2.6671-13-1
Suzuki Shinji4-2.6672-00-0
Hirata Tomoya5-1.8331-10-0
Oomote Takuto3-2.6000-02-0
Shida Tatsuya3-2.6001-00-1
Uchida Shuhei2-3.4001-10-0
Takao Shinji2-3.4001-11-0
Xie Yimin5-01.0002-00-0
Cho Riyu5-01.0001-00-0
Yo Chito1-4.2001-20-1
Matsumoto Takehisa4-1.8001-01-0
Koyama Kuya2-3.4002-00-1
Ichiriki Ryo1-4.2000-01-4

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
202612-6.667
202529-14.674
202428-12.700
202320-18.526
202242-15.737
202132-16.667
202017-15.531
201927-17.614
201835-14.714
201725-17.595
201622-12.647
20153-3.500
20140-1.000
Total292-160.646

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