I could use a hint for this room - I understand the idea (use the 8 pressure plates around the brain to toggle doors in order to path the wisp over the 5 pressure plates in sequence), but try as I might, I can't figure out how to get to the 5th pressure plate.
It seems that (7,10) is 1st, (8,15) is 2nd, (25,11) is 3rd, (16,14) is 4th, and (25,18) is 5th, but the two two-tile wide corridors separating plates 3 and 5 from plate 4 seem to make hitting that 5th plate impossible. As far as I understand, the wisp cannot cross its own path or run alongside another wisp-path without the slayer "
skipping forward,"
and if there's some clever way of using this behavior to reach the final pressure plate, I don't see it. Or perhaps there's something else entirely that I'm overlooking
very clever puzzle! i also didn't realize that the wisp would remain after closing the door underneath it, as long as invisible-beethro steps outside of smell-range of the brain on the same turn you close the door