For somebody who dislikes jigsaws as much as me, I seem to spend a lot of time thinking about them.
I’m tired of seeing adverts for the world’s hardest jigsaw puzzle.
Today’s invention is a seriously difficult challenge.
Take your image and cut it into the usual pieces. Then take another version of the same image (cardboard is dirt cheap) and repeat the process using a different pattern of cut pieces.
Add both sets of pieces to a single box and sell.
I think that should keep puzzlers busy for a while. even after they have one image complete (which will involve up to (2N)! trial fits for an N-piece image), they still have another puzzle to solve.