I have seen a video of it. I think either on the Quilt show or an old Simply Quilts. I believe what you are talking about is you take a stack of squares, the size doesn't matter, as long as they are all the same size.
You then slice the stack of squares into pieces. You can make straight cuts, but it works best if you make angular cuts. If you are cutting a wonky 9 patch, you would need nine squares. If you cut a wonky 4 patch you need 4 squares.
You then sew together the pieces you cut - one from each color square to make a block. You then have squares that are identical in shapes, but each one is different colors.
Make sense?