O Yujin

O Yujin (sometimes Oh Yujin, Korean 오유진, Japanese 呉侑珍, Chinese 吴侑珍) is a female Korean 9-dan professional player born in 1998-06-11. She is the second daughter of O Dong-hwan and Lee Kyung-hee. She learned Go with her older sister on their father’s recommendation.

Table of contents Go career Promotion history Titles and runners up Head-to-head scores against current female rivals Style Personal life Links Videos Pictures

Go career

As of 2024-11-28, O Yujin is the #8 ranked female in the world and #3 female in South Korea. On the 2016, 2017, and 2019 rating lists, she was the #3 female go player in the world. In 2024, she scored her 600th career win. Her total score is 986 games, 630 wins, 356 losses, for a 63.89% win rate (as of 30 Nov 2024).

Promotion history

O qualified as a pro in 2012-07-30 through a double elimination tournament alongside Kim Sinyoung. She was promoted to 6-dan in 2018, 7-dan in 2019, and 8-dan in 2021. Then later that year, she was awarded a special promotion to 9-dan after beating Choi Jung 9p 2–1 in the 26th Women's Kuksu, after beating Cho Hyeyeon 9p and Kim Chaeyoung then-8p on the way.

• 9 dan / 2021.11.25 / Winner of 26th Women's Kuksu, Special Promotion to 9 dan in Limited Edition
• 8 dan / 2021.09.16 / Promotion to 8 Dan
• 7 dan / 2019.08.27 / Promotion to 7 Dan
• 6 dan / 2018.05.14 / Promotion to 6 Dan
• 5 dan / 2016.12.13 / 21st Women's Kuksu Winner
• 4 dan / 2016.11.16 / Winner of the 7th Gungryungsan Byeongseong Cup World Women’s Baduk Championship
• 3 dan / 2016.07.13 / 18th Nongshim Shin Ramyun Cup Preliminary Round
• 2 dan / 2015.03.11 / 59th National Championship Preliminary Round
• 1 dan / 2012.07.30 / 41st Women's Entrance Competition

Titles and runners up

• 2015 Runner-up 16th Women's Myeongin
• 2016 Runner-up 17th Women's Myeongin
• 2016 Winner of Bingsheng Cup
• 2016 Winner of 21st Women's Kuksu
• 2017 Runner-up 1st Women's Kisung
• 2017 Winner 7th Huang Longshi Shuang Deng Cup
• 2017 Gold Medal IMSA Elite Mind Games Women's Go Individual?
• 2018 Runner up 9th Bingsheng Cup
• 2019 Runner up 24th Women's Kuksu
• 2019 most wins, 9th Huang Longshi Shuang Deng Cup
• 2021 Winner of 5th Women's Kisung
• 2021 Winner of 25th Women's Kuksu
• 2022 Winner of 5th Wu Qingyuan Cup
• 2022 Runner up of 1st Supreme Female Player
• 2024 Runner up of 7th International Baduk Chunhyang Tournament 2024 (unofficial)
• 2024 Runner up of 4th IBK Cup Women’s Baduk Masters

O Yujin also won her first seven games of the 10th Korean Women’s League, i.e. 100% in the first half, before an upset loss from a winning position to new 1p Choi Seo-bi in the first round of the second half.

Head-to-head scores against current female rivals

(Based on Oh Yujin, Go Ratings and game list), as of 26 Nov 2024.

• Choi Jung, 9p, current Korean and World #1 female: 10–26
• Kim Eunji, 9p, #2 female and #1 female teenager in world, #2 female in Korea: 4–9
• Ueno Asami, 5p, #3 female in world, #1 female in Japan: 3–0
• Zhou Hongyu, 7p, #4 female in world, #1 female in China: 5–5
• Tang Jiawen, 6p, #5 female in world, and #2 female in China: 2–1
• Fujisawa Rina, 7p, #6 female in world, #2 female in Japan: 5–1
• Tang Jiawen, 6p, #5 female in world, and #2 female in China: 1–2
• Yu Zhiying, 8p, #7 female in world, #23 female in China: 11–9
• Kim Chaeyeong, 9p, #8 female in world, #4 female in South Korea: 5–13
• Wu Yiming, 6p, #10 female and #2 female teenager in world, #4 female in China: 4–1
• Lu Minquan, 6p, #11 female in world, #5 female in China: 5–2
• Li He, 5p, #12 female in world, #6 female in China: 8–2
• Nakamura Sumire, 3p, #13 ranked female and #3 female teenager in the world, #3 ranked female in Japan, #5 ranked female in Korea: 1–2
• Cho Seunga, 7p, #15 ranked player and #323 overall, and #6 ranked female player in Korea: 10–5
• Gao Xing, 4p, #18 in world, #9 in China: 5–0
• Cho Hyeyeon, 9p, #19 female in world, once #1 and many years #2 female in world: 8–2
• Rui Naiwei, 9p, #20 female in world, many years #1 female in world: 4–2
• Ueno Risa, 3p, #21 female and #3 female teenager in world, #3 female in Japan: 1–0
• Kim Hye-min, 9p, #19 female in the world, #7 female player in Korea: 5–5
• Kim Dayoung, 5p, Kim Chaeyeong’s younger sister, #27 ranked female in the world and #9 female in Korea: 8–6
• Lee Minjin, 8p, #29 female in the world, #10 female player in Korea: 5–1
• Xie Yimin, 7p, #30 ranked female in the world, #5 ranked female in Japan (#1 for many years): 6–1
• Nyu Eiko, 4p, #34 ranked female player and #304 overall, and #7 ranked female player in Japan: 5–1
• Joanne Missingham aka Hei Jiajia, 7p, #39 female in world, #1 ranked female player in Taiwan: 1–1
• Pak Chi-eun (Park Shiun), 9p, #68 in world (formerly #3 for 4 years), #23 in Korea (formerly #1): 6–0
• Kim Eunseon 6p, Winner Baduk Masters Queen: 9–0
• Heo Suhhyun, 4p, Hyorim Cup winner: 5–4
• Jeong Yujin, 4p, Winner 2nd IBK Cup: 3–1
• Kim Jooah, 3p, Runner up, 2nd Hyorim Cup Future Empress Championship: 4–1
• Kim Minseo, 4p: 1–0
• Lee Suljoo, 3p: 1–0

Style

O Yujin likes thick positions, biding her time to attack. She admires Lee Sedol's creativity. She would like to reach the top 100 in the world of either sex. But she says:

I think female players are a little behind male players in terms of concentration and stamina.

Personal life

O Yujin and Choi Jung are close friends. ‘Fantasy combination’ Choi Jeong and Oh Yu-jin “Thank you to the fans who supported us.” ''Baduk News,'' 2019.06.13 (in Korean)

O used to wear glasses, but now wears contacts.

Links

• Korean Wikipedia
• Japanese Wikipedia
• Korean Baduk profile
• Go Ratings and Games
• Go4Go

Videos

• A pre-game YouTube link and post-game YouTube link interviews (both her and Fujisawa Rina before and after 2023 Korean Women Baduk Team's evaluational matches against invited players from Japan and China in August 2023.
• A pre-game YouTube link and post-game YouTube link interviews (both her and Nakamura Sumire before and after 2023 Korean Women Baduk Team's evaluational matches against invited players from Japan and China in September 2023.

Pictures

O Yujin (right) vs Nakamura Sumire, final, Chunhyang Selection Tourney, Jun 2024 (Image credit: m.yna.co.kr)

oh yujin asian games 2023 (Image credit: Foxwq.com)

O Yujin (left) and Nakamura Sumire, finalists, Chunhyang Selection Tourney, Jun 2024 (Image credit: Asahi Shimbun, Twitter)

O Yujin (right) and Nakamura Sumire, analyzing, Chunhyang Selection Tourney, Jun 2024 (Image credit: Asahi Shimbun, Twitter)

4th IBK Cup Women’s Baduk Masters winner Kim Chaeyoung, promoted to 9p, and runner-up O Yujin (right), 9p (Image credit: m.baduk.or.kr)