Turing Trains

(the worst part of ML is that it is now difficult to search for things about locomotive trains ... fortunately one of the searches reminded me that it was subways and not trains...)

A Subway Named Turing - https://community.fortunecity.ws/underworld/continue/56/subw...

(which is referenced from another HN post that incidentally is from the same site - though different page)

Computational Duplo train track layouts - https://news.ycombinator.com/item?id=17772292 (215 points, 19 comments)

Now I'm wondering what you would need to add to OpenTTD to build this...

Originally described here:

http://www.monochrom.at/turingtrainterminal/Chalcraft.pdf

From the Cambridge University maths magazine:

https://archim.org.uk/eureka/archive/Eureka-53.pdf

In dwarf fortress: https://dwarffortresswiki.org/index.php/DF2014:Computing#Min...

I used to play a mobile puzzle game with similar rules. I loved to make busy beaver solutions on the simpler levels.

Reminds me of Kenichi Morita's Rotary Element (2005).