I tried something like this before as well, but with all blocks very close around the corners of the white outline (so all touching at least another block).
Now I tried again and managed to find the (a?) solution - which doesn't seem to have any real logic to it.
Oh well, at least another genie down. Also, I must not have listened to the Max' genie close enough during its introduction because I went to the genie in Rainbow Tower to see if they could share some powers. Sadly no.