Go Player Ratings

JAKOAbout ratings

Cho Hyeyeon

Cho Hyeyeon (조혜연) has a rating of 1545, ranked 178 of 340 in korea play. Their highest rating so far is 1791 (September 28, 2007).

Cho Hyeyeon조혜연趙惠連
Rating1545
Rank178
1-year change↓21
Peak rating1791
Last 10331-257(1 by default)
2026 record
15-10
Record since 1954
331-257
Win rate
.563

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

Korea ratingsFind a player

Rating history — korea

11 gamesHigh 1578Low 1542
42 gamesHigh 1618Low 1518
74 gamesHigh 1629Low 1518
587 gamesHigh 1791Low 1402

The “All” view starts at 1970; earlier years are used only to warm up the calculation and are not shown.

Rating history in the korean women's tournaments pool (for reference)

15 gamesHigh 1725Low 1633
45 gamesHigh 1775Low 1633
88 gamesHigh 1775Low 1623
391 gamesHigh 1845Low 1471

The “All” view starts at 1970; earlier years are used only to warm up the calculation and are not shown.

Ratings in other pools

Ratings for Korean play and for Korean women's tournaments are calculated independently, and neither affects ratings in Japanese tournaments.

  • Korean women's tournaments: 1703 (#10)

Recent games

Up to 20 games, newest first. “Change” is the rating movement.
DateOpponent and tournamentResultChange
September 22, 2026An Kwanwuk레전드(시니어) 바둑리그 1-2　as Black↓22
September 17, 2026Lee Na-hyeon한국여자바둑리그 14-3(통합라운드)　as White↓22
September 12, 2026Kim Dayoung한국여자바둑리그 13-3　as White↑15
September 3, 2026Park Soyul한국여자바둑리그 12-1　as White↑14
August 22, 2026Wu Yiming한국여자바둑리그 11-4　as Black↓10
August 6, 2026Li He한국여자바둑리그 9-1　as Black↑23
August 4, 2026Kim JooahHarim杯 プロ女子国手戦 Main Round of 16　as Black↓16
July 30, 2026Kim Sinyoung한국여자바둑리그 8-1　as White↑10
July 17, 2026Kim Chaeyoung한국여자바둑리그 7-2　as White↑22
July 15, 2026Kim SoojinSh수협은행 여자바둑 최강전 예선 2회차　as Black↓24
July 10, 2026Ueno Risa한국여자바둑리그 6-2　as White↑13
June 25, 2026Heo Seohyun한국여자바둑리그 4-1　as White↑17
June 24, 2026Lee Na-kyungHarim杯 プロ女子国手戦 Preliminary Final　as Black↑12
June 23, 2026Chae HyeongiHarim杯 プロ女子国手戦 예선 2회차　as White↑16
June 18, 2026Lee Na-kyung한국여자바둑리그 3-1　as Black↓22
June 2, 2026Yoon Seo-wonJiji Auction杯 紳士・淑女・新鋭連勝対抗戦 신사ㆍ숙녀ㆍ신예 연승대항전 6국　as Black↓11
April 22, 2026Kim DayoungJiji Auction杯 紳士・淑女・新鋭連勝対抗戦 신사 숙녀 신예 연승대항전 예선 3회전　as Black↑16
April 21, 2026Lee SuljooJiji Auction杯 紳士・淑女・新鋭連勝対抗戦 신사 숙녀 신예 연승대항전 예선 2회전　as White↑11
April 20, 2026Jeon Yu-jinJiji Auction杯 紳士・淑女・新鋭連勝対抗戦 신사 숙녀 신예 연승대항전 예선 1회전　as White↑9
January 23, 2026Kim Youngsam大舟杯 シニア最強者戦 Preliminary Final　as Black↓18

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
202615-10.600
20257-8.467
202422-17.564
202327-15.643
202219-19.500
202124-14.632
202018-12.600
201925-12.676
201822-13.629
201719-5.792
20168-11.421
201517-14.548
201410-12.455
201319-11.633
201226-20.565
201116-15.516
201025-17.595
200921-12.636
200819-16.543
200737-19.661
200620-20.500
200536-18.667
200423-13.639
200328-14.667
200225-11.694
200117-10.630
200016-12.571
199910-11.476
19986-11.353
19975-8.385

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