It all depends on what the pieces look like, how can you tell which ones are the edges (theoretically). Say for sake of argument it is because the edge and corner pieces form a square outline, an edge piece could look like:
┌──┐
├──┤
└──┘
Then the piece could have two possible orientations in an edge slot.
But overall with this one me is rather

about what they are actually meaning! It could just be that because you can tell it is an edge you know what way round it has to go as well?????
**EDIT Never mind, re-reading the conundrum
Quote:You can tell by looking at the pieces which ones are the four corners, which ones are the eight side pieces, and which ones are the inside pieces. Otherwise, you can't tell where on the tablet they should go or how they should be oriented.
So I think therefore that does indeed state that the outer pieces could well be any way round...
Which would give an answer of 1585446912?