http://qui.live.mediaspanonlinen.com/rss/ Quincy Herald Whig en-us By RODNEY HART Herald-Whig Staff Writer Gail McCauslin and her Quincy Supportive Living for Seniors residents have been in a rather puzzling situation the past two months at the Quincy Senior and Family Resource Center. But they've connected enough pieces to help build the "World's Largest Jigsaw Puzzle." Senior citizens from four supportive living communities throughout the state are completing a 24,000-piece work of art called "Life: The Greatest Challenge." http://qui.live.mediaspanonline.com/new_story/Puzzle--WED