Only one layer needed
Third attempt in optimisation gave best score
These are my solutions to the game SpaceChem. I haven't played this for over 7 years, so solutions might be out of date -- the game mechanics changed over time, so solutions might require some tweaking. All imagery is content from the SpaceChem game, and all copyrights are reserved to the creators of that game, please visit spacechemthegame.com for more information.