- Born on 1/20/1980.
- In 1994, became 1 dan pro.
- In 2001, became 7 dan pro.
- In 2003, advanced to 9p.
- In 2000, 13th Fujitsu Cup quarter-final.
- In 2001, at age of 21, became challenger of 56th Honinbo title, the youngest Honinbo challenger in history.
- In 2002, won 49th NHK Cup and 27th Shin-Jin-O champions, and for the year, achieved the most winning games (70 wins and 14 losses) and the highest winning rate (83.33%) in Japan, and won 36th KIDO Outstanding Player, Most Wins, Winning Rate #1 and Most Games Played Awards.
- In 2003, won 58th Honinbo title by defeating Kato Masao by 4:2 and became the second youngest Honinbo title holder. With this victory, he also advanced to 9p and becomes the youngest 9p (23) and the fast player to advance from 1p to 9p (9 years and 3 months) in Japanese Go history.
- On 12/4/2003, won 51st Oza title.
- In 2004, the challenger of 42nd Judan title, successfully defended his Honinbo title by defeating Yoda Norimoto by 4:2, and won 29th Meijin title by defeating Yoda Norimoto by 4:2, and successfully defended his Oza title by defeated Yamashita Keigo by 3:1 in the final.
- In 2005, won the champion of the 24th NEC Tournament and 52nd NHK Cup, the champion of 9th LG Cup, the champion of 17th Asian TV Cup Fast Game tournament, and successfully defended his Meijin and Oza Title.
- In 2006, won Agon Cup, Ryusei and Gosei champions and became five-champion king (Meijin, Oza, Gosei, Agon Cup and Ryusei).
- In 2007, won 2nd place of 3rd Toyota Cup World Oza and the champion of 26th NEC Cup, successfully defended his Gosei title and won 32nd Meijin title.
- In 2008, successfully defended his Meijin and Gosei title, won 15th Agon Cup, 34th Tengen Title and 56th Oza Title.
- In 2009, successfully defended his Gosei title adn won 47th Judan title.
- In 2010, won 34th Kisei title and becomes the second player to achieve grand slam of seven big tournaments after Cho Chikun did it in 1987.
- In 2010, successfully defended his Judan title.
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