Cross-cut then extend

    Keywords: MiddleGame, Proverb

Chinese: 扭十字长一方
(niǔshízě cháng yīfāng)
Chinese trad.: 扭十字長一方
Japanese: 切り違えにノビ
Korean:

The proverb cross-cut then extend (or the first to extend from a crosscut has the advantage) is somewhat misleading. There has been a lot of criticism that can be read at the /Technical Discussion page. A way to interpret the proverb is to reduce it to a not so common situation:

When there are no other stones nearby, extending from the crosscut gives the advantage

Some diagrams to explain.

[Diagram]

Isolated crosscut

An isolated cross-cut. Black to play.

It is tempting to play atari. Then connecting at B3 is a good idea. However, this strengthens White and weakens the lone Black stone. A ladder at a may be possible.

[Diagram]

Extend

After the more defensive-looking extension it is White's turn. However, White has to make a choice of which stone to strengthen. This is in fact an application of the 1-2-3 principle: if you are going to strengthen at B3 in the previous diagram, why not do it at once as in this diagram.

See also


Authors



Nobody seemed to object to my draft, so I replaced the old content of this proverb with the draft and moved the old content to a discussion page. --Dieter



This is a copy of the living page "Cross-cut then extend" at Sensei's Library.
(OC) 2008 the Authors, published under the OpenContent License V1.0.
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