: ( 142)
Black captures White's two stones on the upper edge.
:
White must connect her single stone in the centre.
:
Here also, White is able to play this protective move on the left side.
:
This move reduces Black's liberties below the Punishment Semeai Liberty Level. Black must not capture this stone, because his liberty count will not be affected, and White could successfully capture the hanezeki's tail.
:
White captures Black's two stones. Black's group has no eye, so Black will be unable to give atari on White's centre group from below.