The Art Museum of Italian-speaking Switzerland (MASI) is presenting a major retrospective dedicated to Richard Paul Lohse, co-founder of the “Zurich Concretists”. Following its debut in Lugano, the exhibition will travel to Haus Konstruktiv in Zurich and later to Germany in February. Thirty-six squares transition from yellow to green, a simple appearance that conceals a meticulously calculated process. According to the exhibition organizers, the “heart” of Richard Paul Lohse’s (1902–1988) creative work was not in execution but in planning. For this reason, his works are dated twice: the first date marks when the artist first recorded an idea as a sketch or note—a detail considered more significant, writes MASI director…