Go Player Ratings

JAAbout ratings

O Keii

O Keii (王景怡) has a rating of 1545, ranked 235 of 452 in professional play. Their highest rating so far is 1618 (March 21, 2019).

O Keii4 dan王景怡Nihon Ki-in Chubu
Rating1545
Rank235
1-year change↓2
Peak rating1618
Last 10136-162
2026 record
8-12
Record since 1927
136-162
Win rate
.456

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

Professional ratingsFind a player

Rating history — professional

18 gamesHigh 1573Low 1525
62 gamesHigh 1577Low 1489
99 gamesHigh 1577Low 1483
298 gamesHigh 1618Low 1428

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 1749Low 1683
43 gamesHigh 1757Low 1627
64 gamesHigh 1757Low 1596
176 gamesHigh 1757Low 1487

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: 1683 (#18)

Recent games

Up to 20 games, newest first. “Change” is the rating movement.
DateOpponent and tournamentResultChange
August 27, 2026Omori RanWomen's Kisei　Colors unknown↓21
August 24, 2026Ogata MasakiOza　Colors unknown↓7
August 6, 2026Miyagawa FumihikoOza　Colors unknown↑15
June 11, 2026Oba JunyaOkan　Colors unknown↓6
June 4, 2026Osawa KenroOza　Colors unknown↑12
May 21, 2026Kim HyunjongOza　Colors unknown↑6
May 14, 2026Imamura YoshiakiJudan　Colors unknown↓12
April 29, 2026Mukai ChiakiFumakilla Women's Go Brains Match Round 1　as Black↓8
April 23, 2026Hiroe HiroyukiOkan　Colors unknown↑10
April 9, 2026Inagaki YoJudan　Colors unknown↑3
April 6, 2026Takao MariGosei　Colors unknown↓17
April 2, 2026Bian WenkaiTengen　Colors unknown↓16
March 26, 2026Hoda ShotaHoninbo　Colors unknown↓15
March 19, 2026Takao MariSenko Cup Women's Strongest Player Preliminary Final　Colors unknown↓14
March 12, 2026Ito KenryoJudan　Colors unknown↑18
March 5, 2026Mishima HibikiWomen's Honinbo Preliminary Final　as White↓24
February 26, 2026Hotta SeijiGosei　Colors unknown↑3
February 2, 2026Yamashiro HiroshiMeijin Preliminary C　as Black↓7
January 22, 2026Tsukuda AkikoSenko Cup Women's Strongest Player Preliminary Semifinal　Colors unknown↑12
January 8, 2026Nishioka MasaoKisei First Tournament Preliminary Round 1　Colors unknown↓8

Head-to-head

Up to 10 opponents, most-played first. Records are from O Keii'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
Asano Yasuko14-01.0001-00-0
Tsukuda Akiko11-3.7863-02-0
Ito Kenryo6-4.6000-01-0
Kim Hyunjong8-1.8890-00-0
Bian Wenkai2-7.2220-00-0
Takao Mari3-5.3750-10-0
Yanagisawa Satoshi2-6.2500-00-0
Konishi Kazuko4-4.5000-31-0
Nakano Hironari0-7.0000-00-0
Nakane Naoyuki1-6.1430-00-0
Hane Yasumasa2-5.2860-00-0
Yoshida Mika3-4.4291-11-0
Osawa Kenro3-4.4290-00-0
Hane Ayaka2-4.3330-00-0
Imamura Yoshiaki2-4.3330-00-0
Sakakibara Fumiko5-1.8331-00-0
Katayama Yasuo4-2.6670-00-0
Ohashi Naruya0-5.0000-00-0
Nyu Eiko2-3.4000-00-0
Ito Yoji1-4.2000-00-0
Omori Ran2-3.4000-00-0
Miyamoto Chiharu4-1.8000-00-0
Kamiji Hiroki4-1.8000-00-0
Mutsuura Yuta1-4.2000-00-1
Suzuki Ayumi1-4.2000-21-2
Akedo Kazumi4-1.8000-00-0
Tanemura Sayuri2-3.4000-10-1
Matsuoka Hideki3-2.6000-00-0
Kato Yuki0-5.0000-00-0
Kato Chie0-5.0000-00-2
Kawada Kohei3-2.6000-00-0
Fujisawa Rina0-5.0000-20-1
Tsuruta Kazushi2-3.4000-00-0

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
20268-12.400
202525-16.610
202417-16.515
202317-14.548
202214-15.483
202112-14.462
202017-15.531
201915-17.469
201828-17.622
201719-21.475
201618-20.474
201515-14.517
20146-9.400
201311-12.478
20125-8.385
201111-8.579
20101-3.250
20092-4.333
20081-1.500
Total136-162.456

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