Career
Takehisa is a student of top title holder Cho Chikun. In 1997 he became a professional at the Nihon Ki-in institute in Japan. He quickly moved up the ranks, being promoted to 3 dan just the next year.
In 2003 he reached a total amount of 200 wins as a professional go player.
Takehisa took the first game, but Ko would come back and take the second.