From the comments I've gotten with the last post, people seem to think this might be a difficult quilt to put together, far from it! I went to my EQ and colored the sashings white (the better to see you with, my dear... lol) On MY version of the mystery, I used 4 inch squares, because you can find them so easily on e-Bay, already pre-cut, any theme you want. They're also easy to cut, 20 from a FQ. My sashing was 1½ inches wide. I like to strip piece, so I cut long strips of sashing, sewed down my squares, cut them apart, and added the sashing on the other side. My version made 9 inch blocks.
Can you see the sidewise 8 in the block? Tilt your head to the right. (: As you're putting your sets of 4 sashed squares together, look for the 8 shape to make sure you're laying them out right.
The block is called Patience Corners. If you google 'patience corners quilt block' you'll find a page of links. It's on Quilter's Cache, under the P's. Marcia did it as a 12 inch block, with thicker sashing. If you look around the web, you'll see it with scrappy sashing and all one color square too, the opposite of what I've done here. I also found it as a charity pattern, with 5 inch pieced blocks - and thought it'd be a great setting for crumb blocks.