I'm going to make a Sudoku Quilt. Or quilt top. Or, most likely, mini quilt top. Sudoku Mini Quilt Top.
Here's my stack of 9 fabrics.
So, to turn the concept into a quilt, the trick is, assign each of your fabrics a number, and arrange them like a solved Sudoku puzzle (or, to be on the safe side, the answer-key to a Sudoku puzzle!)
Here's my layout ...
I'm still thinking about sashing/border colors ... so we'll see what kind of look we end up with.
So far, so good!