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Bamboo Joint Example 1
Difficulty: Beginner
Keywords: Shape
The black shape (
Black is now connected and cannot be cut apart.
The bamboo joint is often a better response to a peep than a direct connection. In the diagram, after
Jonathan Cano: Playing
Frequently Black has no hope of capturing White's stones so playing a move that keeps Black connected (as
Here,
Also notice that if White pushes at c Black can block at d and White is unable to cut at e unless the ladder works in White's favor. If
Examined in this way, it is obvious why
Black could also answer (See also Bamboo Joint Is Bad Shape?)
The shape move is the bamboo joint, and I'd recommend against Black a in the majority of cases. It's an empty triangle for one thing; and, yes, it takes away a liberty from White, but it takes one away from Black too! So as long as the fight is one that one can't count, there is no reason to play bad shape. If the black group is an outside group, surrounding a white group which is involved in a semeai with another black group, that's the only occasion where Black a might be called for.
After If White tries to cut,
Black has a ladder. -- Bill Spight
I suggest this move. It combines two nice shapes: 'marked + 2' and 'unmarked + 2' (see shape, table shape). Moreover, Black is connected regardless of the ladder, and White has few forcing moves against this shape. White a for instance, is forcing against the keima connection proposed above; but is not forcing here.
If White peeps at -- Bill Spight
Still, the marked stone feels awkward. Wouldn't it be better at a ? In other words, I don't think that this diagram disproves my earlier assertion. --Dieter Verhofstadt (not trying to drive anything home, just discussing to learn)
Sure, the marked stone would be better at a. But the white stones
The fact that
Even here it is not necessary. Take it away and there is still a ladder.
And even if the ladder does not work, it is easy to give up the marked stone.
So even the keima connection is a bit inefficient. But it at least makes use of -- Bill Spight
-- Dieter
My point. The -- Bill
JamesA: A quick comment - I think the extra efficiency of Bill's version is demonstrated by the fact that after
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