# 44-73 enclosure, 3-4 attachment

Keywords: Joseki

Chtito: I have a question about an approaching sequence that I don't understand: [200]

Corner Sequence

After , the sequence White a, Black b is played. Now my question is: why White does not play b instead of a? How would Black punish a white play at b?

Usual shape

tderz: This is better shape and played more frequent.

Then c, not b (too wide) would be played.
White replies at a (honte), not e (if s.o could link the apprpriate diagrams to here, they must be already on Senseis).

fractic: I've also got a question about this. What happens if black plays as above and white doesn't play honte at a? A black cut leads nowhere and a peep leads to something like

White doesn't play honte

fractic: with black 11 at a. But now white can push trough at b so I don't think it's that good for black.

your question - how to punish?

tderz: On the right (with the usual extension ), White would simply punish by pressing black down while building influence herself.
If White proceeds as on the right, then Black gained a bit (in comparision to the right dia) because the extension is one wider.

your question - how to punish?

tderz: - is confusing, it depends a lot on the neighbouring stones. The exchange - itself is bad for Black (cf. pushing on the 4th line?).
If there is one white stone below , then
White could descend with a, threaten connections b and c as miai.

Hence, I think the invasion is feasible, because Black has to commit the unfavourable puush on the 4th line.

your question - how to punish?

Bill: is simple and effective. After , because of , are obviously very inefficient.

Can White play this?

Charles Well, if and it becomes very dangerous for White. After can White cut at the marked point? I don't believe so. In any case White was strong here first, so that White shouldn't have to fight in such a desperate way: it should be Black's problem to find good moves, and here it is White's.

at is quite bad, while at is possible but not really interesting.

tderz: White protects at b after , Black connects at , then White cuts at c and is much better off. Due to the presence of , blacks 3 stones have to fight in an unfavourable environment and will dammage -- (which were bad style).
It is true that black d is sente against the corner, but that won't help so much.
could have been played around m (connecting own stones - ladder works to the left - and threatening all the rest).

44-73 enclosure, 3-4 attachment last edited by Dieter on July 5, 2008 - 14:28