Buchholz's Constant-Variables

As a contemporary of El Lissitzky and László Moholy-Nagy, Erich Buchholz was a forerunner of German constructivism and suprematism.  His sequence of screen-prints, Constant-Variables, from 1964 explores the permeability of art in time and space.  Each piece of the sequence uses only red, white and black with fixed lines and a permutation of shifting rectangular shapes. 

Buchholz at Daimler Contemporary, Berlin 2012: