4-5 point 4-3 approach keima, contact at 3-5, hanedashi
Black's move here has a long history (it dates back to the eighteenth century). It impresses amateurs, rather than pros.
The only variation that is worth mentioning is here, catching the black stone in a ladder. Obviously, white can only play this if the ladder works.
Continuing the main line, now White decides how to handle the cutting stone . Normally
is played (the alternative is to play atari first at
). These are the standard plays, with White able to jump out as far as
.
Now both sides try to arrange their shape on the outside, by playing moves against the inner groups.
There are a number of variations, but and
are popular (
at the circled point equally so).
Since threatens Black on the left,
to
are required (White's choice of how to play
clearly determines which side the peep
is, too - if
is played at
instead,
peeps at
instead). On the upper side
is honte but it is also possible to play directly at
.
This is the joseki book continuation, assuming White wants to leave ladder aji on the outside, and that is a good ladder.
If white plays instead of a, black pushes in with
. White answers with
or
. If
, after
white needs to play
to live, and black fetches up his shape with
.
In a pro game, naturally, the players adjust the way of playing the later stages of this joseki, according to the needs of the overall position.
Charles Matthews, additions by Andre Engels