Composição Sobre Fundo Cinza , by rubem ludolf , 1956 , abstract , Concretism style , Orange, Rectangle, Pattern, Line, Tints and shades, Symmetry
A black and red checkered pattern on a white background.
 a checkered flag. The flag is composed of six squares. The first square is red. The second square is black. The third square is gray. The fourth square is dark grey. The remaining squares are black.