The Igo Masters Cup is a Go competition in Japan.
Outline
The tournament is open only to players over the age of 50 and who have won at least one Top 7 title (Kisei, Meijin, Honinbo, Tengen, Oza, Judan, Gosei). The format is single knockout and each player is allotted two hours thinking time. The winners' purse is 5 million Yen ($62,000).
References
Igo Masters Cup Wikipedia(Text) CC BY-SA