Ambiguity is one of the most significant works of Atanasio Soldati's post-war production. In fact, in addition to being one of the first abstract works to win a prize in post-World War II Italy (thus characterizing the Gallarate Prize for experimental rigor), it summarizes the characteristics of Soldati's aesthetic research. The artist composes the work paying particular attention to qualitative and quantitative chromatic contrasts, relationships between complementary colors, lines and surfaces. The formal balances are then challenged by a composition that is structured around a diagonal axis that seems to divide the canvas in two, without any reference to symmetry. The complex interlocking of forms amplifies, as the title recalls, the ambiguity of the entire work. The framework is therefore an essential reference for Italian concretism and in particular for the MAC. The formal and compositional rigor, linked to the artist's training in the architectural field, is explained by Soldati himself since the first experiments (around the mid-thirties) in which the painter passes from the representation of reality to abstraction. Soldati himself, already in 1935, wrote in the catalog of his exhibition at the Galleria Il Milione: “Abstract painting (even if the adjective may not be suitable) loves analysis, order, the harmonious relationships of geometry, clarity ... Neither reproductions of nature, nor sensations of life. To express the drama, there is no need for knives or corpses, [...] but simply for lines, colors, surfaces, as if to say about all the means of painting, without any kind of systems: above literature . The artist's perceptions are infinitely more precious than the most faithful descriptions of reality .