MathDB
TOT 450 1995 Spring A J6 6 parallelepipeds in space

Source:

July 9, 2024
geometrycombinatorial geometrycombinatorics

Problem Statement

Can it happen that 66 parallelepipeds, no two of which have common points, are placed in space so that there is a point outside of them from which no vertex of a parallelepiped is visible? (The parallelepipeds are not transparent.)
(V Proizvolov)