> This sounds like the map colouring problem to me.

Good idea, but the OP seems to talk about complete graphs where every pair of vertices is connected.

For bigger N this is way beyond the planar graphs needed for the map coloring problem.

But following the links given leads to Edge coloring, which seems to be fit the problem's description.

and the Example section states:

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^2: Graph labeling problem by LanX
in thread Graph labeling problem by baxy77bax

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