White might play hane at
in order to play
in sente. If black gives the usual answer, a and b are miai for life. If
is answered with
white would have a chance to escape at
.
One of the correct responses is throw-in at
to reduce eyespace. After
, a and b are miai for black to kill.
(
at
also kills.)
is safely met by
- Black has no inside tricks. This secures the largest territory, though later Black a will be sente.
at b or c lives with less points, without giving the sente move at a.