: ( 364)
With this atari, White follows an idea of Yoon YoungSun 8p for the F-path after Black's guzumi on the right side ( 442). However, the relationship of ko-threats differs here, because Black has cut off White's groups on the left, and on the bottom.
Ko: ; ;
:
White has no other effective ko-threats left, but Black has one at , to reduce White's group on the lower edge to only one eye, so White simply captures the hanezeki's tail in sente.
:
Black simply erases White's ko-threats in this area.
:
Finally, White wins the ko in the upper left. However, Black is comfortably ahead overall.
(C) 
(C) 
364
442
; 
; 
:
, to reduce White's group on the lower edge to only one eye, so White simply captures the hanezeki's tail in sente.
:
:
