: ( 944)
Black connects the hanezeki's tail, but too early.

White's centre group has five liberties left, which is one liberty too many.

:
Black re-captures the ko. Simply further occupying liberties of White's centre group will not help him either.

:
White starts the semeai with Black's connected group on the lower edge.

:
White wins this semeai with Black's connected group on the lower edge by one move.

Black must not connect the hanezeki's tail, as long as White's centre group will have more than four liberties thereafter.