Cho Chikun - Kato Masao, 14th Judan 1975 (Triple Ko)
Kato Masao got lucky in the 14th Judan. In his match against Cho Chikun, the result was void because of this triple ko. The game was replayed, and Kato won the rematch and went on to win the title.
zinger: A fascinating position! But why is it said that Kato "got lucky"? Black seems to be doing just fine elsewhere on the board.