Go Player Ratings

JAAbout ratings

Nyu Eiko

Nyu Eiko (牛栄子) has a rating of 1719, ranked 122 of 452 in professional play. Their highest rating so far is 1811 (December 2, 2021).

Nyu Eiko4 dan牛栄子Nihon Ki-in Tokyo
Rating1719
Rank122
1-year change↓27
Peak rating1811
Last 10179-153
2026 record
12-9
Record since 1927
179-153
Win rate
.539

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

Professional ratingsFind a player

Rating history — professional

23 gamesHigh 1739Low 1685
83 gamesHigh 1774Low 1624
136 gamesHigh 1811Low 1624
317 gamesHigh 1811Low 1463

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)

15 gamesHigh 1945Low 1891
58 gamesHigh 2021Low 1891
102 gamesHigh 2021Low 1779
219 gamesHigh 2021Low 1519

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: 1905 (#6)

Recent games

Up to 20 games, newest first. “Change” is the rating movement.
DateOpponent and tournamentResultChange
September 17, 2026I RyoGosei Preliminary A　as Black↓7
September 10, 2026Jo BunenWomen's Kisei Preliminary A　as White↑14
August 13, 2026Yo ChitoOza　Colors unknown↑23
August 10, 2026Mori ChisakiHiroshima Aluminum Cup Wakagoi Preliminary Semifinal　Colors unknown↑6
August 10, 2026Ueno RisaHiroshima Aluminum Cup Wakagoi Preliminary Final　Colors unknown↓10
August 10, 2026Cho KoharuHiroshima Aluminum Cup Wakagoi Preliminary Round 1　Colors unknown↑3
August 6, 2026Hoshiai ShihoOza　Colors unknown↑17
July 6, 2026Ueno RisaWomen's Honinbo Round 3　as Black↓13
July 2, 2026Shigekawa AkashiHoninbo　Colors unknown↓16
June 29, 2026Tsuneishi TakashiGosei　Colors unknown↑19
June 22, 2026Ito MasashiTengen　Colors unknown↓12
June 13, 2026Fujisawa RinaFumakilla Women's Go Brains Match Round 3　as Black↓9
June 4, 2026Kaneko MakiWomen's Honinbo Round 2　as White↑3
May 18, 2026Iwata SaekaSenko Cup Women's Strongest Player Round 1　as White↓24
April 29, 2026Kato ChieFumakilla Women's Go Brains Match Round 2　as Black↑16
April 29, 2026Kobayashi IzumiFumakilla Women's Go Brains Match Round 1　as Black↑8
April 9, 2026Mori ChisakiJudan　Colors unknown↓26
March 23, 2026Rin ShienKisei First Tournament Round 3　as White↓15
March 12, 2026Cho KoharuSenko Cup Women's Strongest Player Preliminary Final　Colors unknown↑2
February 5, 2026Iguchi ToyohideKisei First Tournament Preliminary Round 2　Colors unknown↑19

Head-to-head

Up to 10 opponents, most-played first. Records are from Nyu Eiko'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
Ueno Asami7-13.3503-44-7
Fujisawa Rina3-15.1671-72-6
Xie Yimin5-7.4173-52-2
Mukai Chiaki5-6.4551-01-5
Hoshiai Shiho7-3.7003-22-1
Ueno Risa4-6.4002-11-4
Suzuki Ayumi7-3.7003-33-0
Nakamura Sumire3-6.3331-52-1
Kato Chie5-3.6253-11-2
Ito Kenryo2-5.2860-00-0
Tsukuda Akiko6-01.0000-02-0
Kato Keiko5-1.8332-00-0
Okuda Aya3-3.5001-02-2
O Keii3-2.6000-00-0
Mimura Kaori5-01.0001-01-0
Yokota Hinano5-01.0001-01-0
Mannami Nao4-1.8001-11-0
Kaneko Maki5-01.0001-01-0
Nishiyama Shizuka4-1.8000-02-0
Yo Chito2-3.4000-01-1
Kobayashi Izumi3-2.6002-10-1
Moro Arisa3-2.6001-01-1
Iwata Saeka1-4.2001-20-1
Yashiro Kumiko4-1.8001-11-0

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
202612-9.571
202528-22.560
202435-25.583
202322-23.489
202238-20.655
202134-17.667
202030-17.638
201926-21.553
201841-26.612
201728-27.509
201630-21.588
201512-6.667
Total179-153.539

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