Jiang Zhujiu
Jiang Zhujiu 江铸久 = Jiāng Zhùjiǔ ("Jujo")
(b. 17 February 1962) is a Chinese 9-dan professional who currently plays in Korea. (In Korean his name is Chang Chu-chu, also spelt Kang Jugu.)
Jiang won the first North American Masters Tournament in 1995, being eligible as he had by then been living in the United States for several years. He has successfully defended the title every year since.
Jiang is married to Rui Naiwei. His brother Jiang Mingjiu is also a professional go player.
Jiang has been seen playing on the Internet Go Server from time to time.
Co-editor, with his brother Jiang Mingjiu, of "Weiqi Technique Encyclopedia (Guanzi Pu)" or "围棋技巧大全 (官子谱)" is a new (March 1996) version of Guanzi Pu.