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InvasionItinerary

Referenced by
45Point
45Point33Approach
UnusualEnclosures
Further135Variants

 

45103 enclosure
Path: InvasionItinerary   · Prev: Semedori   · Next: BQM7/ASuitableCaseForTreatment
    Keywords: Opening, Joseki

[Diagram]
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]
Trappy

The idea is to play into the complex joseki with B4, having BC waiting.


[Diagram]
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]
Other way round (54103)



The other direction of extension is rarely used now - White can get a good result invading at W1, as you can see by applying the joseki in the previous diagram. In this case BC 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: BQM7/ASuitableCaseForTreatment
This is a copy of the living page "45103 enclosure" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.