In this **work phase
(1987-89)**, the four-dimensional rotation of a hyper-cube
becomes an additional element in generating signs and shapes. A
four-dimensional hyper-cube can also be seen as a structural
relationship of eight interconnected cubes. In this particular
work, each of these eight cubes are looked at through a square
window (the 0,0,0 rotation of each cube). Four of the cubes are
represented by their frontal view (black) and four by their back
(grey). This partitioning of black or grey is a combinatorial
element in the algorithm of this work.

Exhibition catalogs:

Manfred Mohr, "Fractured Symmetry, Algorithmic Works 1967-1987", Wilhelm-Hack-Museum, Ludwigshafen 1987

Manfred Mohr, "Arbeiten 1960-1988", Reuchlinhaus, Pforzheim, 1988