- Born on 11/7/1958.
- In 1972, became 1p.
- In 1988, promoted to 9p.
- In 1981, won 6th Shin-Jin-O Title.
- In 1982, winner of Oteai top section.
- In 1983, winner of 14th Shin-Ei title.
- In 1989, 1992 and 1999, won 11th, 14th and 21st Kakusei titles.
- In 1992, 5th Fujitsu Cup second place by losing only half point.
- In 1992, participated in Honinbo league.
- In 1994, won 1st Agon Cup champion.
- In 1995 and 1998-2000, won 43th and 46th-48th Oza titles.
- In 1995, won 1st JT Cup champion.
- In 1997, won 44th NHK Cup champion, 10th Fujitsu Cup second place and Aisan Cup Fast Game second place.
- In 1998, won 2nd LG Cup champion.
- In 1999, defended successfully his Oza title.
- In 2000, won 2nd Chun Lan Cup champion, and 48th Oza title (three consecutive Oza titles).
- In 2000-2002, won 24th-26th Kisei titles.
- In 2001, won 3rd Chun Lan Cup second place, won 39th Judan Title and defended successfully his Kisei title.
- In 2002, defended successfully his Kisei title and Judan title, NEC Cup second place, Toyota Cup quarter-final, and won 36th KIDO Outstanding Player Award.
- In 2003, lost his Kisei title to Yamashita Keigo 1:4 and successfully defended his Judan title by beating Takao Shinji 3:2.
- In 2004, won his fourth consecutive Judan title by defeating Cho U 3:1.
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