Rhombicosidodecahedron non-Rupert conjecture
Prove that the Rhombicosidodecahedron does not have Rupert’s property, thereby resolving the conjecture that this specific Archimedean solid fails to be Rupert.
References
In [Conjecture 2]{StYu23} we conjectured that the Rhombicosidodecahedron (RID in short) does not have Rupert's property. We still believe this conjecture, however the methods of this paper do not suffice to prove it.
— A convex polyhedron without Rupert's property
(Steininger et al., 25 Aug 2025) in Section 9.1, Origin of the Noperthedron