Yasuo Koyama
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Biography
Koyama was a disciple of Riichi Sekiyama.[1] He became a 9-dan in 1971. He played in the Kansai Ki-in. His disciple was Yahata Koichi.
Titles
| Title | Years Held |
|---|---|
| Current | 1 |
| Template:Flagicon Kansai Ki-in Championship | 1962 |
References
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