Solution  

kills.

After , both eyes at around x and y are gote eyes;

White will be able to destroy one of them.

Eye 'x'

( at around y)  

White can destroy the eye around here.

( at )  

is to prevent snapback.

Black can't make this eye in sente.

If is at r, is at .

Eye 'y'

( at around x)  

White can destroy this eye.

 

Black can't make this eye in sente.

 

Two eyes (around x and y).

 

The black group has another eye at around x or y.

 

Two eyes (around x and y).

 

or at r are moves to help one's opponent.