Thanks are due to Ken Weinert
In these pictures, each quilt square shows up as four triangles, each of which is colored with a color corresponding to one side of the quilt square. Hey ... it's easier to just look at the picture than describe it ... the picture at the right shows FOUR quilt squares.
The final test problem was constructed to imbed a message inside
a 26x36 quilt ... details are at the first link below!