Quote:
Originally Posted by davar55
As to vertical gaps, except for the bottom layer,
which must be full of cubes, every cube must
be situated over a column of cubes (no gaps
vertically) but within a layer any configuration
is allowed (so placing cubes in opposite corners,
creating "horizontal" gaps, is fine.)
Sorry about any confusion.
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If you put one cube on top of another
then lift the top one 1 mm I would describe
the resulting 1 mm thick gap as "horizontal".
Hence my initial confusion.