The format was based on a mix of the number puzzle Sudoku and general knowledge questions.
It is located on the slope of Sudo Mountain, across the street from the COEX Mall.
Silent Möbius (1998) (main composer with Suzie Katayama and Kenichi Sudo)
Founded in 1141 and run by the 55th generation of the Sudo family, it is the oldest sake brewery in Japan and one of the oldest companies in the world.