Wow QuiltE thank-you, thank-you, so much. Your mathematical equations do make sense to me. Divisible by three..., well I'm off to make a sample using the last example.
I guess I'm in a February mood to use red's and cream colors. I love the optical illusion of a curved block and realize there are probably oodles of layouts too.
I wonder if this is a vintage block pattern?
Thank-you Quilterdale for posting this thread, I just finished a "Checkered Dresden Plate" and was wanting to start another quilt then viola this pattern is fantastic!