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Defect in a wall
Difficulty: Beginner Keywords: Shape, Tactics
A wall that is solidly connected will have no defects.
Here the
It would of course be absurd for Black to play at a, before being forced to. That is, sometimes one has to live with inperfections caused in walls, because solid connections are too slow-moving. There are numerous types of defects. There are some standard shapes used to exploit them. See for a number of very well known positions after common joseki. Some more examples: Example 1
How should White play to use the fact that
In this case White has a strong attack with the clamp
Typically Black will connect at Bill: It should be noted that White has bad shape, too. In effect, she peeped at a bamboo joint. Not only that, she then tried to cut it. ;-)
Example 2This is based on variations from 4-4 point low approach, two-space high pincer with side stone.
There are two defects here: White can play at the table point a to cause trouble later; and White can pull out? the cutting stone
Note that
This for comparison is the result of a joseki that is out of fashion with the pros.
On the other hand, the I've been told by stronger players that each defect in thickness decreases it's value by half. (I read this that a wall with 2 defects is roughly .25 the value of a flawless wall)
I've also been told to generally treat the peeps against the defects as throw-away forcing moves to support an invasion. This of course is true, unless the defect is actually a valid cutting point, requiring no peep.
This is a copy of the living page "Defect in a wall" at Sensei's Library. ![]() |