Kazimir Malevich's painting Black Square (1915) had a decisive influence on the course of artistic developments in the 20th century. On the 100-year anniversary of the work, Irina Vakar has reassessed the evidence base around the painting and caused much excitement among art historians in the process. With art historical findings from X-ray imagery and pigment samples, a new story of its creation and interpretation has emerged. After the publication of the results in Russian, a German and English edition is now available. Malevich's abstract painting is not the sole focus-the book actually covers his complete oeuvre. For example, his theatre experiments, in particular the futuristic opera Victory Over the Sun (premiere 1913), are linked to considerations on Black Square.