I worked up a similar quilt in EQ7. Some of the blocks would have white background instead of black, and this may not have been the layout of the entire quilt, but you can see it is made up of just 1/4 Dresden plates, put together much like a log cabin might be. My example doesn't use stack-n-whack, so it doesn't have the bands of color. I really like that quilt, glad you posted about it.