Go Player Ratings

JAAbout ratings

Koyama Terumi

Koyama Terumi (小山栄美) has a rating of 1585, ranked 204 of 452 in professional play. Their highest rating so far is 1630 (July 24, 2025).

Koyama Terumi7 dan小山栄美Nihon Ki-in TokyoAlso known as: 小山滿鶴, 西田栄美
Rating1585
Rank204
1-year change↓30
Peak rating1630
Last 10170-196(1 by default)
2026 record
6-9
Record since 1927
170-196
Win rate
.465

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

Professional ratingsFind a player

Rating history — professional

14 gamesHigh 1621Low 1581
53 gamesHigh 1630Low 1532
89 gamesHigh 1630Low 1516
285 gamesHigh 1630Low 1418

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

Rating history in the women's tournaments pool (for reference)

8 gamesHigh 1682Low 1639
35 gamesHigh 1741Low 1617
61 gamesHigh 1748Low 1617
219 gamesHigh 1771Low 1586

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

Ratings in other pools

Ratings for general play and for women's tournaments are calculated independently and do not affect each other.

  • Women's tournaments: 1662 (#21)

Recent games

Up to 20 games, newest first. “Change” is the rating movement.
DateOpponent and tournamentResultChange
July 30, 2026Tajiri YutoOza　Colors unknown↓11
July 2, 2026Saga ShuntaroTengen　Colors unknown↓19
June 25, 2026Chen BoshaoOza　Colors unknown↑20
June 11, 2026Shuto ShunHoninbo　Colors unknown↓6
May 14, 2026Aoki KikuyoHoninbo　Colors unknown↑11
April 30, 2026Yoshihara YukariOza　Colors unknown↑9
April 20, 2026Kono YukioTengen　Colors unknown↑1
April 2, 2026Sugimoto AkiraJudan　Colors unknown↓17
March 26, 2026Mochizuki KenichiGosei　Colors unknown↓7
March 12, 2026Kubo KatsuakiTeikei Cup Legend Round 2　as White↓14
February 19, 2026So KofukuTengen　Colors unknown↑11
February 12, 2026Hoshiai ShihoKisei First Tournament Round 2　as White↓13
January 26, 2026Ishida YoshioTeikei Cup Legend Round 1　as White↑11
January 10, 2026Kobayashi IzumiTeikei Cup Women's Legend Final　as Black↓12
January 8, 2026Hoshiai ShihoSenko Cup Women's Strongest Player Preliminary　as White↓8
December 25, 2025Yoshihara YukariTeikei Cup Women's Legend Round 3　as White↑16
December 11, 2025Terayama ReiMeijin　Colors unknown↓6
November 27, 2025Mimura KaoriSenko Cup Women's Strongest Player Preliminary Round 1　Colors unknown↑12
November 20, 2025Izawa AkinoTeikei Cup Women's Legend Round 2　as White↑12
November 13, 2025Kobayashi IzumiWomen's Honinbo Preliminary Round 1　Colors unknown↓14

Head-to-head

Up to 10 opponents, most-played first. Records are from Koyama Terumi'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
Ogawa Tomoko13-5.7226-35-1
Aoki Kikuyo6-11.3532-52-4
Kato Tomoko8-7.5331-33-2
Suzuki Ayumi6-6.5003-10-3
Kato Keiko3-8.2730-12-1
Kobayashi Izumi6-5.5450-43-0
Yashiro Kumiko9-2.8183-05-1
Osawa Narumi7-3.7002-13-1
Xie Yimin2-8.2000-31-2
Makihata Taeko5-4.5561-00-2
Yoshida Mika5-4.5563-11-2
Mukai Chiaki1-8.1110-40-2
Nakazawa Ayako6-2.7502-21-0
Okada Yumiko5-3.6250-12-1
Hoshiai Shiho1-7.1250-00-3
Okuda Aya3-5.3750-32-1
Mimura Kaori5-2.7141-00-0
Sugiuchi Kazuko5-2.7144-01-1
Mannami Nao2-5.2860-00-2
Chinen Kaori2-5.2861-10-0
Kanno Naomi7-01.0002-02-0
Cho Chien4-2.6671-00-0
Yoshihara Yukari5-1.8331-01-0
Shuto Shun2-4.3331-00-0
Kibe Natsuki4-2.6671-00-0
Izawa Akino3-3.5001-02-1
Komatsu Hideko4-2.6672-00-2
Kobayashi Chizu3-3.5000-20-1
Kuwabara Yoko4-2.6671-00-0
Hara Sachiko4-1.8001-01-1
Kaneko Maki3-2.6000-00-0
Ishida Yoshio3-2.6001-02-1
Shinkai Hiroko5-01.0003-00-0
Ueda Takashi3-2.6000-00-0
Ueno Risa2-3.4001-11-1
Hosaka Mayu5-01.0000-00-0
Konishi Kazuko3-2.6002-11-0
Fujisawa Rina1-4.2000-10-2
Kono Mitsuki1-4.2000-00-0

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.

YearRecordWin rate
20266-9.400
202514-12.538
202419-19.500
202321-13.618
202211-17.393
202117-14.548
202014-13.518
201921-17.553
201823-17.575
201716-19.457
201621-14.600
201514-13.518
20149-8.529
20139-5.643
20129-12.429
20119-10.474
20106-8.429
20095-4.556
20084-5.444
20078-6.571
20062-14.125
200516-12.571
200420-13.606
200313-15.464
20025-11.313
19990-5.000
19987-4.636
19976-3.667
19964-3.571
19954-3.571
19945-3.625
19935-4.556
19923-4.429
19917-4.636
19907-3.700
19894-3.571
19882-2.500
19872-01.000
Total170-196.465

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