Go Player Ratings

JAKOAbout ratings

Seo Bongsoo

Seo Bongsoo (서봉수) has a rating of 1593, ranked 151 of 340 in korea play. Their highest rating so far is 2118 (December 2, 1983).

Seo Bongsoo서봉수徐奉洙
Rating1593
Rank151
1-year change↑11
Peak rating2118
Last 101312-817(2 by default, 1 lost by default)
2026 record
8-5
Record since 1954
1312-817
Win rate
.616

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

Korea ratingsFind a player

Rating history — korea

26 gamesHigh 1615Low 1560
69 gamesHigh 1621Low 1501
95 gamesHigh 1712Low 1501
2126 gamesHigh 2118Low 1500

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 22, 2026Kim Chanwu레전드(시니어) 바둑리그 1-2　as White↑9
September 16, 2026Kim SeungjinThe Merriden Open Round of 32　as White↓7
September 5, 2026Kim Hyeoimin蔚山市長杯 全国囲碁大会 プロシニア最強戦 프로 시니어 최강전 16강　as Black↓20
August 6, 2026Lee SeongjaeThe Merriden Open 시니어조 예선 결승　as White↑16
August 5, 2026Choi KyubyeongThe Merriden Open 시니어조 예선 1회전　as White↑12
February 20, 2026Park Byeongkyu大舟杯 シニア最強者戦 Main Round of 16　as White↓17
February 9, 2026Kim Hyeonseok블리츠 Open Main Round of 32　as White↓14
January 23, 2026Kim Chongsu大舟杯 シニア最強者戦 Preliminary Final　as White↑7
January 22, 2026Hwang Weonjun大舟杯 シニア最強者戦 예선 2회차　as Black↑3
January 21, 2026Kim Hyeoimin大舟杯 シニア最強者戦 예선 1회차　as White↑11
January 13, 2026Kim Sinyoung블리츠 Open 프로 예선 2회차　as White↑6
January 13, 2026Lee Minjin블리츠 Open 프로 예선 3회차　as White↑9
January 5, 2026Park YeonghunGS Caltex杯 プロ棋戦 Preliminary Round 1　as White↓7
December 9, 2025Kwon Hyojin레전드(시니어) 바둑리그 챔피언결정전 3차전(최종전)　as Black↑10
December 8, 2025Kwon Hyojin레전드(시니어) 바둑리그 챔피언결정전 2차전　as White↑11
November 6, 2025Kim Chongsu레전드(시니어) 바둑리그 14-1(통합라운드)　as White↑6
November 4, 2025Lee Minjin레전드(시니어) 바둑리그 13-2(통합라운드)　as White↓22
October 29, 2025An Kwanwuk레전드(시니어) 바둑리그 11-4(통합라운드)　as White↑10
October 24, 2025Lee Changho레전드(시니어) 바둑리그 10-1(통합라운드)　as White↓7
October 21, 2025Choi Kyubyeong레전드(시니어) 바둑리그 9-2　as White↓24

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
20268-5.615
202515-12.556
202416-6.727
202312-13.480
20222-3.400
20217-2.778
202016-7.696
201918-12.600
201821-10.677
201712-7.632
201619-11.633
201511-11.500
201422-12.647
201317-11.607
201216-14.533
201110-11.476
201014-13.518
20098-6.571
200813-9.591
200720-14.588
200614-10.583
200524-15.615
200417-11.607
200313-14.481
200224-17.585
200120-15.571
200021-10.677
199920-13.606
199815-13.536
199730-20.600
199615-19.441
199538-20.655
199433-20.623
199331-29.517
199242-24.636
199137-21.638
199038-24.613
198938-30.559
198856-22.718
198737-29.561
198646-30.605
198546-33.582
198436-23.610
198345-19.703
198239-26.600
198131-20.608
198042-14.750
197940-13.755
197830-15.667
197716-23.410
197624-13.649
197519-5.792
197415-6.714
197310-3.769
197218-5.783
197115-4.789

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