: ( 292)
Black takes outside liberties first.

:
White is able to erase one of Black's ko-threats on the right side.

:
Black's group does not have sufficient liberties left to further occupy shared liberties.

:
Black' atari on the upper edge is no valid ko-threat, because White's centre group has four liberties left.

:
White simply connects the ko on the right.

:
Black is unable to give atari at . White wins the semeai.