That is a Disappearing 9-Patch, Next Generation. I recognized it because I have made a small quilt like that. Mine started with 5 inch squares, but I recommend larger squares to start with. You make your 9 patch, disappear it (cut it up) and top each smaller square with a square the same size of a tonal (reads solid) RST. Draw a line from corner to corner, not over the black, then sew 1/4 inch from center line. Cut these apart and you have those amazing blocks. Put them together with the tonal points touching. Check the picture, too.
I also love the little squares border.
Also, notice that the little black squares all slant the same way in this pattern. Not like in the regular D-9-Patch, where they alternate from one direction to the other.
Last edited by maviskw; 10-21-2016 at 05:51 AM.