Kunibert Fritz († Oct. 2023) played a very distinctive role in the movement of concrete constructivist art. The squaring of the square has drawn the artist under its spell for over 65 years. His multi-layered "investigations", as the pictures could perhaps also be titled, bear witness to this. Sometimes the square is at the center of the work, sometimes it is the micro-element from which a large sign or a regularity develops. The canon of his works always played out in a square grid. If one considers Kunibert Fritz's position in the context of art history and his colleagues at the Kassel University, one could speak of a "new constructivism", which is limited exclusively to the regularities of the relationship between form and color in a mathematical system of rules with a cybernetic aesthetic.
Hartmut Böhm (†2021) described what emerged at the Academy in Kassel as follows: "from the mid-1950s to the beginning of the 1960s, a phenomenon can be observed that could be described as a rigorous, new constructivism. Without the dominance of a particular class or the influence of a particular teacher, new systematic visual languages and material investigations were developed over two generations of students in painting, graphic art and sculpture. The positions of an exact aesthetic were occupied earlier and more radically than elsewhere in Europe."
Kunibert Fritz described himself as “conservative”, which makes the diversity of his work all the more astonishing, based on such a minimalist element of geometry.