Creating a Gridogram: Hiding a Sentence in a Compact Grid of Letters

Gridogram is a word game where the goal is to trace words in a letter grid to find a hidden quote. Behind the scenes, creating the letter grids for quotes is not obvious: the linked page describes the approach taken.

There's a bit of logic involved, a bit of maths with undirected graphs... hopefully it's of interest! Oh, and there's an interactive bit where you can try creating a grid for a quote, which in itself is kind of a fun challenge.

hopefully not now. Or perhaps it should be written in French, and most French speak no other language.