I've been wanting to make a puzzle quilt for awhile. Earlier this year I found a free Baby Jigsaw Puzzle Quilt Pattern here. Using 35 different batik fabrics, I make this 30.75"x 42.5" quilt top. The pattern suggests using black fabric for some pieces. Maybe it's an unfinished puzzle. I feel it needs a border to make it a little larger if it is to be a baby quilt. Could be a wall hanging with or without a border.
By the way, there are a several free patterns at this website.