Stasi files: History's biggest jigsaw puzzle? — Mugshots of Henning Frunder taken by the Stasi after his arrest. Stasi files: History's biggest jigsaw puzzle? — Frunder looks at fragments of paper which revealed the identity of the person who betrayed him. BStU Stasi files: History's biggest jigsaw puzzle? — A Stasi Records Agency employee pieces together some of the 600 million fragments of paper. BStU Stasi files: History's biggest jigsaw puzzle? — Frunder was contacted by the agency after pieces of paper were discovered with his name and the name of the Stasi agent who betrayed him. BStU Stasi files: History's biggest jigsaw puzzle? — More than 15,000 bags containing fragments of paper were recovered. BStU Prev Next