Nine Patch Uneven Nine Patch
The Uneven Nine Patch style of quilt block is so named because not all of the nine individual patches are the same size as is the case in a regular nine patch quilt block. This style of quilt block is often used in 10" quilt block to make the math easier, but you will find this construction method in many other quilt blocks as well.

Blue Yukon

Free Quilt Block Pattern

The Blue Yukon quilt block is a simple five patch design featuring only squares, rectangles and half square triangles.

The design is constructed as an uneven nine patch to make the construction easier (at least in my opinion), rather than sewing row by row.