Tsumego From Games 48

   

From one of my games. I have no doubt that what happened was not best play from both sides. However, the position looks interesting, and I'd like to know what should have happened.

[Diagram]

White looks vulnerable


[Diagram]

What I tried

My questions are:

  • Is invasion possible?
  • Is B7 right?
  • Where should B9 be?

I tried B9 between B1 and B5, which led to a ko at [circled point] for seki, but lots of things seem to lead to ko at [squared point] for life.


This is a copy of the living page "Tsumego From Games 48" at Sensei's Library.
(OC) 2005 the Authors, published under the OpenContent License V1.0.
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