What brushes did Picasso use to paint guernica?

Pablo Picasso primarily used large brushes to paint "Guernica," which allowed him to create bold, sweeping strokes and significant textures. He employed a variety of brush sizes to achieve different effects, but his focus was on the overall composition and emotional impact rather than intricate details. The painting was executed in oil on canvas, and Picasso's choice of brushes contributed to the dramatic intensity of the piece.