These rules are a little fuzzy to me all over, even though the game itself is a blast trying to figure them out.
I see in the rules that moving diagonal is adjacent. Is attacking the same? I think we have this incorrect allowing ourselves to attack/exorcise from a center point in front of a board to go after all three ghosts.
Movement one space is not the same as adjacency.
Ghost stones are only adjacent to the village in front of them.
Therefore the center village can only attack (and be attacked) by the center ghost on the taoist board.
The corner villages squares are adjacent to the left ghost of one board and the right ghost of the other nearby taoist board. You cannot attack from the corners into the center.
Also, does putting the token on the space that reduces resistance lower a ghost to zero thus not needing to roll any successes when attempting an exorcism?
Semi-correct. While you don't actually require a roll, you still must perform the roll in order to kill the ghost (they don't just die out of lack of will power). The main reason for this is that if you are on a corner with two ghosts it is possible that you are required to kill both ghosts due to the die roll. You might not WANT to kill the second ghost, but if you roll the necessary required colors, you are forced to do so.