- Born on 2/11/1966.
- In 1980, became 1 dan pro.
- In 1993, became 9 dan pro.
- In 1981, winner of 5th Kisei 1 Dan Division.
- In 1983, won 8th Shinjin-O Title.
- In 1984, Participant in 9th Meijin League at age of 18.
- In 1986, won 1st NEC Shunei Title, 11th Shinjin O Title and 17th Shinei Title.
- In 1988 and 1989, won 14th and 15th Shinjin O Titles.
- In 1993, Asian Cup TV Fast Game champion.
- In 1995, won 33th Judan Title.
- In 1996, won 3rd Ing Cup second place, 1st Samsung Cup champion, 34th Judan Title and 22th Gosei Title.
- In 1998, won Gosei Titles for three consecutive years.
- In 1998 and 1999, won 10th and 11th Asian Cup TV Fast Game champion.
- In 2000, won 25th Meijin Title, NHK Cup champion for three consecutive years and total 5 times.
- In 2002, won 27th Meijin title, NEC Cup champion and 24th Kakusei title.
- In 2003, won 28th Gosei title by defeating Kobayashi Koichi 3:2 in the final, won 28th Meijin title by defeating Yamashita Keigo 4:1 and achieved four consecutive Meijin titles.
- In 2004, won the second place in the 17th Fujitsu Cup, the challenger of 59th Honinbo title and successfully defended his Gosei title.
- In 2006, helped Japanese Team to win Nong Shim Cup champion with three straight wins.
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