A Kitani innovation
Kogo's Joseki Dictionary gives a to c as standard continuations, with d marked as "not recommended".
ferdi: White can also tenuki after .
(If someone with a more reliable source of information would like to contribute, please feel free! -- mgoetze)
ferdi: White can also omit .
This was supposedly first played by Go Seigen. Note the similarity to the 3-4 point high approach, thrust. at
might also be possible (supposedly played by Fujisawa Shuko).
Attributed to Takagawa Kaku.
ferdi: this is Takagawa Shukaku (b) - Kitani Minoru, played in 1962.
Pulpstar (15k kgs): Why is d advised against, also is there anything bad about the hanging connection as I played in my most recent game?
Joelr (7k kgs): This is just my impression. Compare it to at a as above. Black will still respond at d, but if White makes an extension along the top, then Black will play b, and be better off than the alternative.
IanDavis : I am wondering why d is bad too, does Black cut at a (ref orig diag)
Charles Basically it's what Black wants here:
Now Black is going to get better shape than White.