O Meien

O Meien (王銘琬) has a rating of 1724, ranked 119 of 452 in professional play. Their highest rating so far is 1983 (May 24, 2007).

O Meien9 dan王銘琬Nihon Ki-in TokyoAlso known as: 鄭銘琬

Rating1724

Rank119

1-year change↓34

Peak rating1983

Last 10712-606(1 by default)

2026 record: 7-8
Record since 1927: 712-606(2 no result)
Win rate: .540

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

Professional ratings Find a player

Rating history — professional

1 year3 years5 yearsAll

20 gamesHigh 1818Low 1724

76 gamesHigh 1854Low 1698

118 gamesHigh 1859Low 1698

666 gamesHigh 1983Low 1698

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.
Date	Opponent and tournament	Result	Change
September 7, 2026	Mutsuura YutaJudan Final　as Black	Loss	↓5
August 13, 2026	Xie YiminGosei　Colors unknown	Loss	↓15
August 6, 2026	Yamashita KeigoHoninbo　Colors unknown	Loss	↓6
July 16, 2026	Sotoyanagi SebunTengen　Colors unknown	Loss	↓12
June 25, 2026	Shimosaka MioriHoninbo　Colors unknown	Win	↑5
June 15, 2026	Hashimoto YujiroGosei　Colors unknown	Win	↑8
June 8, 2026	Mizokami DaisukeOza　Colors unknown	Loss	↓26
May 21, 2026	Ando KazushigeHoninbo　Colors unknown	Win	↑10
April 30, 2026	Ko ReibunKisei First Tournament Preliminary Semifinal　Colors unknown	Loss	↓24
April 23, 2026	Mimura TomoyasuMeijin　Colors unknown	Loss	↓14
March 26, 2026	Hikosaka NaotoTeikei Cup Legend Round 2　as White	Loss	↓14
March 19, 2026	Yokota HinanoKisei First Tournament Preliminary Quarterfinal　Colors unknown	Win	↑7
February 26, 2026	Ueno RisaMeijin Preliminary B　as White	Win	↑20
February 19, 2026	Kim SujunKisei First Tournament Round 2　as Black	Win	↑18
January 22, 2026	Rin KaihoTeikei Cup Legend Round 1　as Black	Win	↑1
December 22, 2025	Hashimoto YujiroMeijin Preliminary C　as White	Win	↑7
November 13, 2025	Takahashi HideoMeijin　Colors unknown	Win	↑3
November 6, 2025	Koike YoshihiroJudan Round 1　as White	Loss	↓5
October 23, 2025	I RyoTengen　Colors unknown	Loss	↓7
September 18, 2025	Watanabe KandaiJudan Final Preliminary Final　Colors unknown	Win	↑15

Head-to-head

Up to 10 opponents, most-played first. Records are from O Meien's point of view; jigo and no-result games are not counted as wins or losses. Only games from 1927 onward are included.
Opponent	Total	As Black	As White
Cho Chikun	16-30.348	8-19	8-10
O Rissei	16-23.410	6-7	9-14
Yoda Norimoto	16-20.444	7-11	9-9
Cho Sonjin	16-18.471	6-9	9-6
Cho U	9-19.321	8-6	1-13
Kato Masao	11-16.407	5-6	6-10
Kataoka Satoshi	10-16.385	5-11	3-4
Yamada Kimio	9-16.360	4-8	5-7
Kobayashi Koichi	13-12.520	6-7	6-5
Kobayashi Satoru	8-16.333	4-7	4-8
Yamashita Keigo	7-16.304	5-9	2-6
Yamashiro Hiroshi	9-11.450	6-5	3-3
Ryu Shikun	9-11.450	5-8	4-3
Awaji Shuzo	10-9.526	3-2	5-5
Rin Kaiho	6-13.316	4-5	2-7
Hikosaka Naoto	11-7.611	4-0	7-7
Takemiya Masaki	6-10.375	2-3	4-7
Mimura Tomoyasu	10-6.625	5-3	3-2
Ishida Yoshio	12-4.750	3-2	5-2
Ogata Masaki	10-5.667	4-2	6-3
Hane Naoki	7-7.500	1-2	6-3
Takao Shinji	1-13.071	0-5	0-8
Mizokami Tomochika	5-9.357	2-7	2-1
Imamura Toshiya	8-4.667	4-2	3-2
Otake Hideo	4-8.333	3-2	1-5
So Yokoku	6-5.545	3-3	2-2
Yuki Satoshi	1-10.091	0-3	1-6
Kudo Norio	6-4.600	4-3	2-1
Ohira Shuzo	2-8.200	1-5	1-3
Kim Sujun	9-1.900	6-1	1-0
Fujisawa Shuko	6-3.667	1-2	5-1
Anzai Nobuaki	4-5.444	2-2	1-2
Honda Kunihisa	3-6.333	0-2	2-4
Matsumoto Takehisa	3-6.333	1-1	2-1
Goto Shungo	9-01.000	3-0	5-0
Kono Rin	4-5.444	1-3	2-2
Sonoda Yuichi	5-3.625	1-3	4-0
Hane Yasumasa	8-01.000	6-0	2-0
Uchida Shuhei	5-1.833	2-1	2-0
Xie Yimin	7-1.875	2-0	2-0
Cho Riyu	5-3.625	3-0	2-3
Kato Atsushi	7-1.875	2-0	2-1
Komatsu Hideki	5-3.625	4-2	0-0
Michael Redmond	6-2.750	1-1	4-1
Rin Shien	4-3.571	1-0	1-2
Ko Iso	5-2.714	3-2	1-0
Morita Michihiro	5-2.714	1-1	3-0
Kono Takashi	4-3.571	0-2	3-0
Miyazawa Goro	5-2.714	0-0	4-2
Yokotsuka Riki	1-6.143	0-0	0-4
Han Zenki	6-1.857	3-1	3-0
Fujisawa Rina	3-4.429	3-2	0-2
Nakano Hironari	4-2.667	2-1	2-1
Akiyama Jiro	3-3.500	2-2	0-0
Sakata Eio	4-2.667	1-1	3-1
Kanazawa Makoto	2-4.333	0-1	2-2
Tsuruyama Atsushi	3-3.500	1-1	2-1
Fujita Akihiko	1-5.167	1-0	0-2
Lee Ishu	3-3.500	1-0	1-3
Suzuki Shinji	4-2.667	0-1	3-0
Hashimoto Yujiro	4-1.800	1-1	2-0
Kurotaki Masanori	5-01.000	3-0	0-0
Motoki Katsuya	0-5.000	0-2	0-1
Yo Kaei	5-01.000	0-0	3-0
Imamura Yoshiaki	3-2.600	0-0	3-1
Adachi Toshimasa	3-2.600	0-0	1-1
Sakai Hideyuki	2-3.400	2-1	0-2
Ueno Asami	3-2.600	1-1	1-1
Oba Junya	3-2.600	2-1	1-1
Kyo Kagen	3-2.600	0-1	2-1
Ishida Akira	2-3.400	1-2	1-1
Ko Reibun	2-3.400	2-0	0-1
Seto Taiki	3-2.600	1-1	2-1

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.

Year	Record	Win rate
2026	7-8	.467
2025	14-12	.538
2024	18-11	.621
2023	11-10	.524
2022	7-15	.318
2021	10-13	.435
2020	24-12	.667
2019	16-17	.485
2018	18-14	.563
2017	26-18	.591
2016	19-14	.576
2015	25-17	.595
2014	13-11	.542
2013	18-12	.600
2012	21-15	.583
2011	21-18	.538
2010	25-17	.595
2009	21-18(2 no result)	.538
2008	23-13	.639
2007	25-13	.658
2006	20-19	.513
2005	29-27	.518
2004	25-28	.472
2003	27-27	.500
2002	34-26	.567
2001	20-17	.540
2000	25-16	.610
1999	13-13	.500
1998	14-14	.500
1997	15-10	.600
1996	5-11	.313
1995	4-13	.235
1994	6-9	.400
1993	2-4	.333
1992	3-7	.300
1991	13-10	.565
1990	13-4	.765
1989	11-8	.579
1988	9-5	.643
1987	12-15	.444
1986	12-22	.353
1985	17-7	.708
1984	8-7	.533
1983	3-2	.600
1982	4-3	.571
1981	4-1	.800
1980	1-3	.250
1979	1-0	1.000
Total	712-606(2 no result)	.540

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