A very complex (and impressive) looking grid of squares. 1600 squares are formed giving the impression of a woven effect.   

A very complex (and impressive) looking grid of squares. 1600 squares are formed giving the impression of a woven effect.   (photo 2)

A very complex (and impressive) looking grid of squares. 1600 squares are formed giving the impression of a woven effect.   (photo 3)

A very complex (and impressive) looking grid of squares. 1600 squares are formed giving the impression of a woven effect.   (photo 4)