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Sculptor Offers Another Clue in 24-Year-Old Mystery at C.i.a.

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Kryptos sculpture, CIA headquarters

Kryptos, a sculpture at C.I.A. headquarters in Langley, Va., in 2010. The last of four messages embedded in Kryptos has baffled code breakers since the work went up in 1990. The sculptor, Jim Sanborn, gave a six-letter clue ("Berlin") in 2010, but it did

Credit: Drew Angerer for The New York Times

The artist who created the enigmatic Kryptos, a puzzle-in-a-sculpture that has driven code breakers to distraction since it was installed 24 years ago in a courtyard at C.I.A. headquarters in Langley, Va., has decided that it is time for a new clue.

From The New York Times
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