The original inspiration came from the 'Bond of Union' print (1956) by M.C. Escher which hangs above our bed as a completed jigsaw. It was framed and gifted to us as a wedding present by my brother-in-law Chris.
When he originally put the puzzle together, he got to the end and discovered he was missing a piece. He contacted the company that made the puzzle but they informed him that each puzzle was cut differently so he couldn't simply obtain the missing piece. Instead, he bought another copy of the puzzle and started all over again!