Net example 10 / Solution

Path: <= Net =>
Sub-page of NetExample10
Net problem  

B4 and B6 wrap a net around the white stones. Her two liberties fall short to Black's three.

Net problem  

This way is also not possible.

Of course here Black has a ladder (even parallel ladders) to capture White's stones; but there is no need to use a ladder.

Aji problem  

Still, there is something of an aji problem left with the net capture: white+circle can connect under.

One should understand, though, that the white+square/black+square exchange loses something for White. White shouldn't play white+square without some good reason.

Another problem  

Another point to notice is that W5 here is annoying for Black, if the centre becomes important and White tries W1.


Dieter: B2 is probably a mistake. Black should attack from a distance, at a.

Another problem  

Charles Even after the black+circle/white+circle exchange the net capture has tactical consequences, such as W4 here.

Dear me ...  

Oops - W4 is vulgar, though. White at white+square looks like correct shape here: consider Black a, White b later.

On the other hand ..  

But now black+square can create miai at a and b. It seems that good style here might lead one astray. White plays b, Black a: White still aims at c.

Tighter capture  

Unless Black can really kill White on the side, answering at black+circle (or d) to prevent White's connection under might be correct.

Dieter: Charles, in all the above variations, Black cuts through the keima in the vicinity of aji. I think that is a mistake.

Charles It's all under the hypothesis that Black is interested in sealing off the centre. I mean, this is a discussion to see the other side of the 'prefer the net to the ladder' argument. The aji is there because Black didn't want the ladder aji, instead.

Ladder + capture  

I think it is meaningful to say, after all those variations, that this position for Black after black+circle (ladder capture) is much thicker. Black has paid for this, because White will have played a ladder-breaker. But in a concrete position, wouldn't this be an interesting discussion?
Dieter: I didn't say it isn't interesting. I don't really consider the ladder. It is true the net leaves aji too but then ...

Another problem  

When White plays W1 she is saving two lost stones and playing close to thickness. I don't say B2 is mandatory but surely there is no reason for Black to start playing close to his strength too, let White use her aji and make sabaki by cutting at a. So I think that all the diagrams involving the cut through the keima just show how not to play, which is valuable as well. It shows the aji, for sure but it doesn't show for Black how to play.

Charles The taisha example at net versus ladder is clearer; but here the extra thickness from the ladder capture seems to be more.

Path: <= Net =>
Net example 10 / Solution last edited by CharlesMatthews on June 19, 2003 - 18:07
RecentChanges · StartingPoints · About
Edit page ·Search · Related · Page info · Latest diff
[Welcome to Sensei's Library!]
Search position
Page history
Latest page diff
Partner sites:
Go Teaching Ladder
Login / Prefs
Sensei's Library