The “slightly simplified” version uses a 16×16 grid (8×8 of which is taken by the molecule) while the “fully simplified” version used a 12×12 grid.
This makes the “fully simplified” version more paper-effective and causes it to produce a larger box when folded from a sheet of same size as the
“slightly simplified” version.
A consequence of more effective paper usage in “fully simplified” variant is that the locks are on the outside of the walls and are visible as a distinct
pattern on two of them while the “slightly simplified” variant has completely smooth walls.
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