Yo Seiki

余 正麒 Taiwanese player (known as Yu Zhengqi ^[1] or Yu Chengch’i) born 1995-06-19, pupil of Cho Rosho 6 dan. He was promoted 1 dan of the Taiwan Qiyuan in 2006 and 2 dan 2008-11-23. In 2009-03 he became 1 dan in the Kansai Ki-in, 2 dan in 2011 and 3 dan in 2012-11-14. In 2013-08-29 he entered in the 69th Honinbo League (youngest player at 18, 2 months; previous record: Iyama Yuta at 20, 2 months), beating Han Zenki 8 dan, and was promoted to 7 dan. In 1967 Kato Masao entered in the Honinbo League as 4 dan at 20 and 5 months: this is another record of Yu’s.

Career record in Japan:

• 2009: 16 games, 9–7
• 2010: 27 games, 16–11
• 2011: 24 games, 18–6
• 2012: 50 games, 36–14 (2nd after Iyama Yuta for wins number; his best serie was 8 wins in a row. In the course, he beat Kobayashi Koichi, pKobayashi Satoru], Cho U, Seto Taiki, Ogata Masaki, and many other strong players).
• 2013: 37 games, 30-7. Runner-up in the 38th Shinjin O.
• 2014: Runner-up in Ryusei.
• 2016: Challenged Iyama Yuta for the 64th Oza, lost 0–3.
• 2017: Challenged Iyama Yuta for the 55th Judan, lost 1–3. Won Kansai Kiin First Place Championship for the first time. As of 2024, he has won the title seven times with a clean score 14–0.
• 2020: Scored a 22-game winning streak.
• 2021: Runner-up in the 68th NHK Cup.
• 2022: Challenged Kyo Kagen in the 60th Judan and Iyama Yuta in the 70th Oza, lost both 0–3.
• 2023: Challenged Iyama Yuta again in the 71st Oza, lost 2–3.
• 2024: Challenged Ichiriki Ryo in the 79th Honinbo, lost 0–3.
• 2025: Winner of 72nd NHK Cup (d. Iyama Yuta)

[1] See discussion on Life in 19x19.

• Kansai Kiin profile
• Taiwan Qiyuan profile (broken link)

Videos

• A Taiwanese news segment on Yu being awarded MVP in a Kansai Kiin's ceremony in 2017. YouTube link
• Couple videos from Asahi Newspaper after a decisive win to enter Meijin League in November 2020. One is a more general interview and in the other video Yu shows the move he thinks was the move of the game. YouTube link & YouTube link

Pictures

yu zhengqi mlily 2023 (Image credit: Foxwq.com)

yu zhengqi xie ke mlily 2023 (Image credit: Foxwq.com)