It was Nobunaga who, in 1578, recognized twenty-year-old Nikkai as the first "Meijin" of Go. In 1582, Nikkai, at the behest of Nobunaga, was involved in a notorious game at the Honnōji Temple against his rival, another Nichiren priest, Kashio Rigen (鹿塩 利玄 b. 1565). (Apparently, there is a theory that "Kashio" and "Rigen" were two different people. See the Japanese version of this article.) The game is traditionally held to have taken place on the eve of the treacherous Incident at Honnōji, (in which Nobunaga was forced to commit seppuku), and is said to have ended in a "triple ko". Hence the notion of triple ko as bad omen. There is a game record, but typical for the period, it is incomplete. The triple ko may have occurred, somewhat implausibly, in unrecorded remaining plays, or in another game that day, but in the end, there is no evidence that this is more than a good story.