I am a member of a jigsaw puzzle library. I borrow 2 or 3 puzzles every month and always have one on the go.
I don't mind the odd missing piece. I don't condone separating the edge pieces and putting them in a little ziplock bag, but I can live with it.
But the following are CRIMES and should result in arrest and jail:
- Separating the puzzle in half!! Left half (edge pieces and all) in one bag and right half in another. What?? Stop that.
- Not properly breaking up your puzzle and putting massive complete chunks back in the box. Jail. Immediately jail.