The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
A ghost Herschel is a dyingspark made by removing one cell from the Herschelheptomino. This particular spark has the advantage that, when placed in a conduit to mark the location of an input or output Herschel, it disappears cleanly without damaging adjacent catalysts, even in dependent conduits with a block only two cells away.