![]() StartingPoints Paths Referenced by
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45103 enclosure
Path: InvasionItinerary · Prev: Semedori · Next: BQM7ASuitableCaseForTreatment
Keywords: Opening, Joseki
This formation occurred a couple of times in games between Honinbo Retsugen and Sakaguchi Sentoku (each time the enclosure was Sakaguchi's).
The idea is to play into the complex joseki with 4, having the marked black stone waiting.
In this case the 3-3 invasion by White gives Black a fair result. But Black at a would already look overconcentrated.
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. ![]() |