Found this in a old second-hand book of mazes. It might look like maths homework. However they could be the basis for something like terrain squares, roads and also dungeons.
I’m sure hex versions would work, even marked out onto Heroscape hexes.
There is also a good cracker style puzzler.
Henry Hyde of Battle Games fame has produced some interesting terrain squares, the first set of which are available as a free PDF gift for subscribing to his Gladius newsletter.
Blogposted by Mark, Man of TIN, 27 December 2018.