Thankyou so much everyone! It was indeed the Bonnie Hunter Checkerboard Rails pattern that I was trying to find. I love the boldness of the pattern, and since I have a bunch of the checkerboard sets done...it was time to get this project organized, but dang I had lost the link and photo.
For anyone wondering what this pattern is, photo below. The link to Bonnie's very inspiring list of free patterns is:
https://quiltville.blogspot.com/p/free-patterns.html