17th century polymath Daniel Schwenter invented a secret writing method based on musical notes. Can a reader solve a musical cryptogram encrypted in this system?
While in New York Carlsen and Karyakin are playing their final games, I am going to present three (alleged) secret codes related to chess.
In World War 1 a female spy in France used a chess board and chess pieces to code a secret message.
Two texts in a book written by Renaissance genius Francis Bacon contain hidden messages. Can a reader find them?
A British censorship manual from WW2 introduces a wide range of message hiding techniques. Some of the examples given are hard to comprehend. Maybe my readers can help.
The British mail authority has issued a set of six stamps devoted to crime writer Agatha Christie. The stamps are packed with steganographic messages. Can you find them?
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