Precedent Images

I came across an application on Open Processing that used overlapping circles with low opacities which gave me the idea for Concept 2

http://www.openprocessing.org/visuals/?visualID=8013

I find the effect that ripples in water make when their rings overlap really interesting.  This is similar to how overlapping circles appear with a low opacity like in the below image.  I want to use these for infuences in my concepts.

I saw this soduku and was interested in how in this image you can find what it seems endless squares and rectangles, all overlayed, different sizes and positions.  I think this idea could be developed into an interesting interactive application.