[Retros] A SPG admitting a false skeleton.

Nicolas DUPONT dupont at agat.univ-lille1.fr
Tue May 7 04:51:59 EDT 2002

Dear retro friends,

Let's consider the following problem :


SPG in 18. (C+).

The solution is of course obvious. The interesting fact is that the
"extracting" problem in 16 crashes.

Does such a phenomenon already has been observed ?


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