Confused: It looks as if the main task for black is to die nicely, so that white can't live. forces
, otherwise Black would live with
.
then destroys the potential white eye at a. From now on, White can only watch the group die at Black's leisure.
If White takes with , Black retakes immediately with
. Should White want to go on with
, the eyespace will be too small for White to live.
ChrisSchack: Just to tidy up, 2 makes an eye in gote, then 3 lives in the corner, removing any space for a second eye.