Go Player Ratings

JAAbout ratings

Ko Reibun

Ko Reibun (孔令文) has a rating of 1614, ranked 190 of 452 in professional play. Their highest rating so far is 1748 (March 26, 2016).

Ko Reibun7 dan孔令文Nihon Ki-in Tokyo
Rating1614
Rank190
1-year change↑32
Peak rating1748
Last 10214-196
2026 record
10-7
Record since 1927
214-196
Win rate
.522

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 1643Low 1554
54 gamesHigh 1643Low 1484
89 gamesHigh 1658Low 1484
329 gamesHigh 1748Low 1484

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
August 27, 2026Chang Ruei JieOza　Colors unknown↓10
July 27, 2026Bian WenkaiSGW Cup Chuyo Preliminary Semifinal　Colors unknown↓19
July 27, 2026Takemiya YokoSGW Cup Chuyo Preliminary Round 1　Colors unknown↑13
July 23, 2026Mizokami TomochikaOza　Colors unknown↑25
July 13, 2026Yanai KazumaHoninbo　Colors unknown↓16
July 9, 2026Takei TaishinGosei　Colors unknown↓12
June 8, 2026Oya KoichiOza　Colors unknown↑12
June 1, 2026Aoki ShinichiHoninbo　Colors unknown↑16
May 4, 2026Fujii KokiKisei First Tournament Preliminary Final　Colors unknown↓4
April 30, 2026O MeienKisei First Tournament Preliminary Semifinal　Colors unknown↑25
April 9, 2026Komatsu HidekiJudan　Colors unknown↓10
March 30, 2026Morita MichihiroTengen　Colors unknown↓10
March 23, 2026Endo YoshifumiKisei First Tournament Preliminary Quarterfinal　Colors unknown↑8
February 26, 2026Kanazawa HideoJudan　Colors unknown↑22
February 12, 2026Ko IunKisei First Tournament Preliminary Round 2　Colors unknown↑14
January 29, 2026Doi MakotoJudan　Colors unknown↑4
January 15, 2026Komatsu HidekoKisei First Tournament Preliminary Round 1　Colors unknown↑3
November 17, 2025Hagiya KazuhiroMeijin　Colors unknown↓28
September 11, 2025Aoki ShinichiSGW Cup Chuyo Preliminary Final　as Black↓16
September 11, 2025Nishimura KeijiSGW Cup Chuyo Preliminary Round 2　as White↑14

Head-to-head

Up to 10 opponents, most-played first. Records are from Ko Reibun'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
Kudo Norio3-4.4291-10-0
Mitani Tetsuya4-2.6670-01-1
Mochizuki Kenichi0-5.0000-00-1
Kenmochi Jo4-1.8000-00-0
Shuto Shun2-3.4000-00-0
O Meien3-2.6001-00-2
Han Zenki1-4.2000-01-1
Yamada Shinji4-1.8000-01-0
Ito Masashi2-2.5001-00-0
O Yuinin4-01.0000-00-0

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
202610-7.588
202510-11.476
20244-8.333
20239-10.474
20226-12.333
202112-7.632
202011-10.524
201916-8.667
20186-11.353
20178-13.381
201617-11.607
201511-7.611
201411-5.688
20134-5.444
201213-12.520
20115-5.500
20100-4.000
20091-1.500
20083-4.429
20071-2.333
200610-9.526
200513-6.684
20049-11.450
200312-7.632
200211-7.611
20011-01.000
19980-3.000
Total214-196.522

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