You don't *need* to break-teleport from 9,18, because the area you'd head to is reachable by first jump-teleporting from 10,17
So, I have to find a way to open the wormhole in 10,17 :-)
(I suppose I have to bring 2 cats from 9,17 for that, but I haven't found the way to do that...)
ok, got it, thanks !
