(Referenced by 1048)

:
Black's atari in the nakade is no valid ko-threat.

:
White simply takes a liberty of Black's connected group on the lower edge.

:
Black will not really get breathing space for his endangered group.

:
White reduces this group to only two liberties again.

The double-ko in the centre ( / ) favours White, so there is nothing that Black could do to pre-empt White's atari at .