Go Player Ratings

JAKOAbout ratings

Yoon Seo-won

Yoon Seo-won (윤서원) has a rating of 1697, ranked 95 of 340 in korea play. Their highest rating so far is 1749 (August 3, 2026).

Yoon Seo-won윤서원尹嶼愿
Rating1697
Rank95
1-year change↑41
Peak rating1749
Last 1068-54
2026 record
31-22
Record since 1954
68-54
Win rate
.557

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

Korea ratingsFind a player

Rating history — korea

74 gamesHigh 1749Low 1560
122 gamesHigh 1749Low 1480
122 gamesHigh 1749Low 1480
122 gamesHigh 1749Low 1480

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
September 11, 2026Yang Jong-chan한국 프로기사협회 리그 Group 5　as White↓18
September 4, 2026Lee Hyungjin한국 프로기사협회 리그 Main Group 5　as Black↓16
August 5, 2026Han JooyoungThe Merriden Open 신예조 예선 2회전　as Black↓18
August 3, 2026Lee Seung-seokSTIC CUP Challenge囲碁リーグ 13-1　as Black↑3
July 27, 2026Kim KieonSTIC CUP Challenge囲碁リーグ 11-1　as White↑18
July 20, 2026Kim SeungguSTIC CUP Challenge囲碁リーグ 9-2　as Black↑20
July 18, 2026An SungjunSG杯 韓国日報 名人戦 Preliminary Round 2　as Black↓6
July 10, 2026Lee Yeon한국 프로기사협회 리그 Group 3　as White↑15
July 9, 2026Im Sang-gyu한국 프로기사협회 리그 Group 3　as Black↓15
July 6, 2026Choi SeungcheolSTIC CUP Challenge囲碁リーグ 7-1　as White↑14
June 30, 2026Lee Seung-minSTIC CUP Challenge囲碁リーグ 6-4　as White↑12
June 26, 2026Hong Se-young한국 프로기사협회 리그 Group 3　as Black↑21
June 25, 2026Ju Chihong한국 프로기사협회 리그 Group 3　as White↑10
June 24, 2026Ki Min-chan河燦錫国手杯 英才最強戦 Main Semifinal　as Black↓12
June 22, 2026Mok JinseokSTIC CUP Challenge囲碁リーグ 3-2　as Black↓14
June 19, 2026Han Jooyoung河燦錫国手杯 英才最強戦 Main Quarterfinal　as White↑22
June 18, 2026Kim Joo-hyung한국 프로기사협회 리그 Group 3　as White↓15
June 17, 2026Im Kyungchan한국 프로기사협회 리그 Group 3　as White↓14
June 15, 2026An ChoyeongJiji Auction杯 紳士・淑女・新鋭連勝対抗戦 신사ㆍ숙녀ㆍ신예 연승대항전 9국　as Black↓14
June 11, 2026Kim Jeonghyeon한국 프로기사협회 리그 Main Group 3　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
202631-22.585
202534-27.557
20243-5.375

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