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.

Monkey Wrench

Free Quilt Block Pattern

There are many variations of the Monkey Wrench quilt block but all in all, it is a very easy block to create. Squares and half square triangles are all the units involved in the making of this block. The interest will lie in your colour choices, so don't be shy about experimenting.

This quilt block is one of the many that were used as clues for escaping slaves to follow the Underground Railroad.

Related:
~ Churn Dash
~ Underground Railroad