3-4 point, high approach, one-space low pincer, 3-3 attachment
The attachment at is a common reply to the one space low pincer. Black will usually either cut at a or play hane at b. The immediate jump to c is a new pattern that is still being explored.
Cut on the inside
Black cuts at and
is forced. Next there are the old continuation at a, which can be considered the main line, and a rather new one at b.
Crawl
When Black crawls, wedge is tesuji. Without this move, the attachment in the corner would not be playable for white.
Next, black can atari from above at a, or from below at b, these moves are further explored at 3-4 point, high approach, one-space low pincer, 3-3 attachment, cut and crawl
Atari
Against and
,
is tesuji. An exchange takes place with Black taking corner territory and sente and White influence towards side and center. The result is considered slightly better for White locally but playable for Black in many circumstances.
here is not so good. The marked stone is under little pressure and Black will find it easy to dispose of the situation.
Trick play diagonal
This is a well-established line too. Next White plays a (simple), or b, c which are both complex. See 34 Point ,High Approach, One Space Low Pincer, 33-Attachment, Outside Hane, Large Scale Fight.
Recently there have been experiments with , also.
Kogo's joseki dictionary says that this is the modern way, and gives some variations which look rather complicated. Game search have found 121 pro games with this position, mostly played since 1997; a is by far the most common continuation (70/121), but all of b through e appear also. More SL analysis needed, a.o. about white forcing at 'f' then attacking at 'g'.
Two point jump
a and b both appeared as followups for white to strengthen his group, but it seems a variety of moves are being experimented with.
tapir: MasterGo has a first isolated occurence in 1987 (Ha Chan Soek vs. Yang Su Yeong), and 8 games in 2007 and 20 in 2008 featuring this pattern (2009 games are not yet updated). Results are usually good for white (winning 63%).
[100]
becomes overconcentrated when white captures
. If
at a instead, black extends across the top to the right to b
Hane at the head - Noseki
Cutting with -
is no good. For analysis, see 3-4 point high approach one-space low pincer attachment noseki