A strange little side quest
If Who is Lying? sends you down a curiosity rabbit hole, start here. Arthur Wynne published a diamond-shaped 'Word-Cross' in the New York World on December 21, 1913; the name later shifted to 'Cross-Word' and then 'crossword'. That is only half the story. Spacewar! appeared on MIT's PDP-1 in 1962 and became one of the earliest influential computer games shared among programmers. That long chain of experiments is part of why puzzles still feels fresh when a game finds the right twist.
