The quilt I am working on right now, Tessellation Blues is in McCalls Quilting magazine Jan/Feb 2012. I have to put together 4 sections to make one block. Also the next row block, the block is incorporated into first block, so have to be careful with each section as to the color I use. Hope I haven't really confused you.
I like to piece one block at a time usually, but with this quilt you have to think what color for each block of next row.