: ( 454)
Black plays the lower kikashi with the hanezeki's tail first, ...

:
... before starting the Crosscut Sequence.

:
But Black must save all of his marked stones.

:
White gets sente to bring her group on the left edge to life.

:
Black cannot prevent two eyes for White's group on the upper edge.

:
Now, 115, and 116, are miai, as are 117, and 118. White wins the game with ease.