One technique to live is to enlarge the eyespace, which is the purpose of . However, in this problem this technique does not work, because the thrust at
followed by the placement at the vital point of
kills. Despite
and
further enlarging the eyespace,
and
can reduce White to only one eye.
makes an eye where there is already one. It is not vital. Black can now kill by playing either of
or
.
Here we present killing by . After
, the placement of
results in White having only one eye.