The Graph module could handle the layout structure just fine. The existence of duplicate letters means that you'll need to encode a distinguishing suffix to the node names, or else store the letter as a property of the node.

It will probably be as important to cook up a data structure for the dictionary which allows sequential lookup by characters. A deep hoh could do that.

After Compline,
Zaxo

In reply to Re: "Bookworm" solver project by Zaxo
in thread "Bookworm" solver project by japhy

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