connects the three stones outside, as shown by the exchange of
and
. Now
and
are miai, so White has only eye at the left side.
The usual block at fails, because it allows the dual-purpose move of
. It threatens capturing the three Black stones at
as well as making the second eye at
.
tries to apply the first-line large knight's move connection technique, but
to
captures one Black stone and lives.
tries the other diagonal. However,
is sente and forcing
if Black insists on the kill. Now after
and
,
can atari.