: ( 442)
Black plays the ko-threat at the end of the hanezeki's tail from above.
:
Black has no effective ko-threats left, so he finishes the ko with this move.
:
Black cannot give atari at , instead. White will connect at . If Black now captures two White stones with , White will connect her stone in the centre with a move at , splitting Black's forces into two groups, with only one eye each.
:
It now has become a semeai between two one-eyed groups. However, Black's group has only six outside liberties () left, so Black has no chance to approach White's group successfully from the inside. White will apply the Punishment Semeai, and win.
(F) 
(.1) 
442
:
:
, instead. White will connect at 
. If Black now captures two White stones with 
, White will connect her stone in the centre with a move at 
, splitting Black's forces into two groups, with only one eye each.
:
) left, so Black has no chance to approach White's group successfully from the inside. White will apply the Punishment Semeai, and win.
