Rectangular six with leg in the corner

   
[Diagram]
Corner shape  

This is a shape between a walkie talkie seven and a rectangular six in the corner.

In both of these, Black can easily live if he has sente. If White has sente, the vital point in the former is a, in case of no outside liberties, and in the latter is b or c depending on whether thereare still outside liberties.

So which is it here?

[Diagram]
Ko  
[Diagram]
Dead  

Shortage of liberties at a

[Diagram]
Life  
[Diagram]
Dead  

Expanding the eye space does not help

[Diagram]
Ko  




Rectangular six with leg in the corner last edited by Dieter on August 21, 2014 - 18:40
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