Cut a hole in one cube so that a cube of the same size (actually one slightly bigger!) can pas through.
https://en.m.wikipedia.org/wiki/Prince_Rupert%27s_cube
Oct 25
Cut a hole in one cube so that a cube of the same size (actually one slightly bigger!) can pas through.
https://en.m.wikipedia.org/wiki/Prince_Rupert%27s_cube
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