"laurad":
Do you mean individual multi pieces over different puzzles or within the same puzzle? As far as I know on igridd you can't compare individual multi pieces over different puzzles but you can sort them for each puzzle by clicking on the Details Tab for the chosen multi.
Just out of curiousity why do you want to sort over different multis (if that is in fact what you are looking for)?
Laura
I know within a multi you can sort, but I want to sort individual pieces for ALL multis.. Just like OP1, I have solved up to a certain average time for griddlers, and it's tedious to do the same for multis the way they are currently done. It involves havingt to use the old puzzle listings, and then copying the puzzle id into igridd.