The CIA Has Been Home to an Unsolved Puzzle for 35 Years. Its Creator Just Released the Final Clues.

The encrypted puzzle has stumped cryptanalysts for decades, and on the eve of an auction revealing the long sought-after ...

‘Matching Minds With Sondheim’ and ‘Ambigrammia’: The Art of the Puzzle

How wordplay and devilish games of deduction can be as satisfying to the soul as a song.