Go Player Ratings

JAKOAbout ratings

Ko Jaehee

Ko Jaehee (고재희) has a rating of 1021, ranked 336 of 340 in korea play. Their highest rating so far is 1596 (November 1, 1978).

Ko Jaehee고재희高在熙
Rating1021
Rank336
1-year change↓17
Peak rating1596
Last 10211-531(2 by default, 8 lost by default)
2026 record
0-4
Record since 1954
211-531(1 no result)
Win rate
.284

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

Korea ratingsFind a player

Rating history — korea

4 gamesHigh 1037Low 1021
11 gamesHigh 1075Low 1021
22 gamesHigh 1125Low 1021
652 gamesHigh 1596Low 1021

The “All” view starts at 1970; 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
July 18, 2026Won SeongjinSG杯 韓国日報 名人戦 Preliminary Round 2　as Black±0
April 20, 2026Jeong DaesangJiji Auction杯 紳士・淑女・新鋭連勝対抗戦 신사 숙녀 신예 연승대항전 예선 2회전　as Black↓5
January 21, 2026Ha Hojung大舟杯 シニア最強者戦 예선 1회차　as White↓10
January 6, 2026Park ByeongkyuGS Caltex杯 プロ棋戦 Preliminary Round 2　as Black↓1
June 18, 2025Yang WooseokSG杯 韓国日報 名人戦 Preliminary Round 2　as White±0
May 13, 2025Moon MyunggunJiji Auction杯 紳士・淑女・新鋭連勝対抗戦 신사 대 숙녀 연승대항전 예선 1회전　as Black↓12
January 22, 2025Kim Hyeoimin大舟杯 シニア最強者戦 예선 1회차　as Black↓1
January 6, 2025Kim DaeheeGS Caltex杯 プロ棋戦 예선 1회차　as White↓1
July 22, 2024Kim SoojangSG杯 韓国日報 名人戦 Preliminary Round 1　Colors unknown—
May 21, 2024Han SangyeolJiji Auction杯 紳士・淑女・新鋭連勝対抗戦 신사 대 숙녀 연승대항전 예선 1회전　as White↓18
January 16, 2024Kim Eunseon大舟杯 シニア最強者戦 Preliminary Round 1　as Black↓3
December 11, 2023Di AnaGS Caltex杯 プロ棋戦 Preliminary Round 1　as Black↓1
July 20, 2023Jin SiyoungSG杯 韓国日報 名人戦 Preliminary Round 1　as Black±0
May 16, 2023Lee YungsooJiji Auction杯 紳士・淑女・新鋭連勝対抗戦 신사 대 숙녀 연승대항전 예선 2회전　as Black↓2
March 20, 2023No Yeongha용성전 시니어조 예선 1회차　Colors unknown—
January 27, 2023Chang GeonhyunYK건기배 Preliminary Round 3　as Black↓2
January 26, 2023Yun JongseobYK건기배 Preliminary Round 2　Colors unknown—
January 17, 2023Kim Jong-joon大舟杯 シニア最強者戦 Preliminary Round 1　as Black↓12
December 12, 2022Kang DajeongSopalkosanol最高棋士決定戦 1차 예선 1회차　Colors unknown—
December 5, 2022Lee WondoGS Caltex杯 プロ棋戦 Preliminary Round 1　as Black↓1

Tournament names are shown in Korean, as the Korea Baduk Association writes them, unless an English name is known.

Round names are translated from the Korea Baduk Association's wording; those we cannot translate are left in Korean.

Record by year

Counted by calendar year, January to December, from Korea Baduk Association games only (default wins and losses are included; jigo and no-result games are not). Games from 1954 onward; international tournaments are not included.

YearRecordWin rate
20260-4.000
20250-4.000
20240-3.000
20231-6.143
20220-10.000
20210-7.000
20200-4.000
20190-4.000
20183-7.300
20172-2.500
20160-3.000
20153-8.273
20141-10.091
20134-10.286
20121-11.083
20112-11.154
20105-11.313
20092-9.182
20081-10.091
20075-12.294
20063-9.250
20054-12.250
20045-9.357
20030-8.000
20024-10.286
20011-8.111
20000-7.000
19991-8.111
19982-9.182
19977-13.350
19966-8.429
19954-13.235
19946-12.333
19931-12.077
19924-14.222
19916-8.429
19902-11.154
19893-13.188
19884-15.210
19875-12(1 no result).294
19866-13.316
19858-14.364
19847-11.389
19834-9.308
19824-8.333
19814-7.364
19804-8.333
19797-9.438
19786-6.500
19779-7.563
19741-6.143
19735-6.455
19726-11.353
19712-5.286
19706-9.400
19695-11.313
19686-9.400
19678-8.500
19666-4.600
19651-2.333
19641-2.333
19630-1.000
19621-2.333
19614-2.667
19600-2.000
19592-2.500

Calculated from games played between 1954 and 2026 (as of September 22, 2026).