Unusual enclosures and tenuki variations

    Keywords: Opening, Joseki

BobMcGuigan Many of the unusual enclosures come from standard joseki patterns (pincers, taisha, etc.) with the white stone removed. For example;



comes from

[Diagram]

[3-5 point low approach one-space low pincer]

Charles A bad tenuki, though, since Black a is strong: see 3-5 point low approach one-space low pincer, tenuki. See 3563 enclosure for White attacking at a instead, the apparent vital point.

And



comes from

Charles This is noted at 3564 enclosure - another way was seen in a recent Korean pro game.

[Diagram]

An-Ch'oe

This was the start of An Younggil-Ch'oe Ch'eol-han (B) 2003-02-19. By the time B5 was played, that corner looks like the 3-3 invasion of the 3564 enclosure.

But the previous diagram shows the usual invasion point.


Other ones of the patterns on unusual enclosures come from pincer joseki with the white stone removed:



comes from

[Diagram]

corner

Charles Noted at 3473 enclosure.

And

[Diagram]

3493 enclosure



comes from

[Diagram]

Three-space pincer



In most of these cases of unusual enclosures, if White were to invade the black formation at a natural point it would result in a position equivalent to White having played tenuki against a pincer.


This is a copy of the living page "Unusual enclosures and tenuki variations" at Sensei's Library.
(OC) 2009 the Authors, published under the OpenContent License V1.0.
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