3463 enclosure

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[Diagram]

3463 enclosure

Hikaru79: Can this enclosure be invaded in any way? Or does the 3-4 assure the fact that black has the corner?



Bob McGuigan: White can invade at a or b and live or escape but most of the many variations are unfavorable for white. Here are some for the move at a:

[Diagram]

3463 enclosure invasion



If W5 is one space to the right, attaching on the 6-3 stone, White can live inside but gets sealed in and Black gets too much thickness on the outside. For example:

[Diagram]

3463 enclosure invasion



[Diagram]

3463 enclosure invasion (continued)



For the invasion to be a success White usually needs support on the outside.

[Diagram]

3463 enclosure

unkx80: Just to add on, the "support on the outside" usually means the existance of a White stone at a or b, and that stone has to be a part of a strong group.


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