Monochrome in Gray, a large oil on Masonite panel from circa 1942, reveals Slobodkina's experimentation with the collage - like forms and shallow pictorial space of synthetic cubism. (palmermuseum.psu.edu)
Crepúsculo (Twilight), 1955, with its extremely shallow pictorial space and totemic, geometric symbols, is typical of his paintings from this period. (artlyst.com)
His paintings depict shallow pictorial space because of the ambiguity of brushstroke. (thoughtco.com)