In 1908, an ecrypted postcard signed with “Somebody” was sent to a sobriety organisation in Northern Ireland. Can a reader decipher it?
A sword showcased in a Havana, Cuba museum bears an encrypted inscription. Can a reader decipher it?
Here’s an telegram from 1952 that might have been encrypted in a code. Can a reader find out which codebook has been used and decipher the message?
The cover of a well-known cryptography book shows a 16-letter cryptogram. Its solution is unknown.
An encrypted diary posted on Reddit last year is still unsolved.
About a century ago, a young man from Austria wrote an encrypted postcard with a sad motive to his lover. Can a reader decipher this cryptogram?
David Oranchak, a leading expert on the cryptograms of the Zodiac Killer, has published a video. It’s a must-see for everybody interested in this case.
In 1907, a young woman from Orimattila, Finland received an encrypted postcard. Can a reader decipher it?
The seat covers in EasyJet airplanes bear symbols that look like pigpen letters. Blog reader Matthias Axinger has provided me an interesting analysis of these glyphs.
This might be the cryptogram discovery of the year: a manuscript containing some 7000 illustrations, many of them with encrypted (?) captions. Can a reader make sense of these unusual artworks?
Letzte Kommentare