A Ramsey problem on hypercubes — another dimension
The following are two-colour colourings of the complete graph of the vertices of an n-dimensional cube, with no monochromatic planar K4 subgraphs.
Symmetry Dimensions Link
I 9 here
S9 9 here
S5 10 here
I 10 here
I 11 here
L2(11) 11 here
Syl3(S11) ≅ C34 C311here
C34 A412here or gzipped
C34 C412here or gzipped

Colourings for n = 3..10 available here.