Ooooh, I was just looking through my box of 2.5" squares. This is what I am planning on doing with them. (I think). I am planning on 39 across and 49 down, with borders, possibly 2 or 3 borders. I will wait and see what it turns out like before I decide on the borders. I need to get my black and white squares cut out first, before I can start on it. Although, I guess I can start on it before I cut out the black and white sqaures.