Thank you - I really love trying to figure out these puzzles.
It's an unequal nine-patch of some sort, but I can't find it in BlockBase. Of course, I could be looking at it and miss it.
I don't think the project file will work in EQ7, but if it will help you draw your own, I started with a 10" block and a 10x10 grid. The outside corners are 3" square and the middle rows are 4".
I did a foundation-piecing layout, but it's a lot of pieces to sew together after the paper piecing - I'm thinking it would be easier to just sew the block conventionally?
I do like the look of the quilt - especially with a ½" sashing accent between the blocks.
Hope this will help!