Титул Тэнгэн разыгрывается в матче из 5-ти партий. Претендент является победителем турнира по олимпийской системе с большим числом участников (около 40). Спонсируется газетами. Первый приз 14 миллионов йен. С 5-го розыгрыша претендент выявляется в матче между двумя финалистами предварительного турнира.
The Tengen title is decided in a best of five match. The challenger is decided in a large knockout tournament starting with about 40 players. The 20th edition will give you some idea of the tournament structure. Up to the 5th edition the title was decided by a match between the finalists of the knockout main tournament. Kato Masao was thus the first player to hold the title. The Japanese Title Overview page shows what's available.
Tengen is the term used to designate the center point on the goban, and it is also the name of a Japanese top title. A lot of Japanese tournaments are sponsored by newspapers. In this case a number of regional newspapers carry the event.
Each year the title holder is challenged by the winner of a preliminary tournament. The winner of the best of five final receives 13 million Yen in prize money.
http://gobase.org/games/jp/tengen/