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InvasionItinerary

Referenced by
UnusualEnclosures
54Point
Further135Variants

 

45103 enclosure
Path: InvasionItinerary   · Prev: Semedori   · Next: BQM7ASuitableCaseForTreatment
    Keywords: Opening, Joseki

[Diagram]
Diag.: 45103 enclosure

This formation occurred a couple of times in games between Honinbo Retsugen and Sakaguchi Sentoku (each time the enclosure was Sakaguchi's).


[Diagram]
Diag.: Trappy

The idea is to play into the complex joseki with 4, having the marked black stone waiting.


[Diagram]
Diag.: 3-3 invasion

In this case the 3-3 invasion by White gives Black a fair result. But Black at a would already look overconcentrated.


[Diagram]
Diag.: Other way round (54103)

The other direction of extension is rarely used now - White can get a good result invading at 1, as you can see by applying the joseki in the previous diagram. The marked black stone ends up on a silly point.

Go Seigen did try this a couple of times very early in his career.

Coming in at a is asking for trouble with Black b. White would want to live quickly and avoid the trappy variation.



Path: InvasionItinerary   · Prev: Semedori   · Next: BQM7ASuitableCaseForTreatment
This is a copy of the living page "45103 enclosure" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.