4-4 point, double low approach, attach-block
Keywords: Joseki
The attach-block of and
invites the atari at
. After
connects, White may choose to play at a, b, or c.
here can also seal the Black group in.
is a more passive reply.
here is a probe. If
descends, then
can cut, aiming at the snapback at Black a, White b, Black c. If
leads to an unfavourable battle after
, then
can consider playing at b instead.
The connection at almost always lead to the attachment at
.