Artist Releases Final Clues to Solve CIA Kryptos Puzzle
Kryptos’ fourth part (K4) remains unsolved; Jim Sanborn will auction the K4 solution and will release a related 97-character K5 puzzle after K4 is solved.
The Kryptos sculpture's long-unsolved plaintext was exposed after Sanborn inadvertently deposited readable text at the Smithsonian, enabling others to photograph and obtain the solution.
