Its logic was "The c5 group is alive.The c5 group is connected to the a8 group (i.e., White cannot separate c5 from a8).
The a8 group is connected to the b11 group. The b11 group is connected to a15. Therefore a15 is connected to the live c3 group, and cannot be killed."
I leave it to you to find the flaw in this logic.
ch.sgf
Description: ch.sgf
Nick -- Nick Wedd [EMAIL PROTECTED]
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