Assassination at Honnoji Temple

Assassination at Honnoji Temple is an famous historical game played between Honinbo Sansa and Kashio Rigen in 1582. The game was played in the presence of Warlord Nobunaga at this monastery in Kyoto. Due to a triple ko, the game was suspended without result. The next day Nobunaga's ally Akechi Mitsuhide rebelled, surrounded the temple, and killed Nobunaga. After this, a triple ko was considered bad luck.

John F. There was almost certainly no such game and no person Kashio Rigen. See "Go Companion".