Baring-Gould-bar

In one of his books British priest and novelist Sabine Baring-Gould (1834–1924) published a short cryptogram. Can a reader solve it?

Postcard-Russia-Finland-bar

In 1906 an unknown person sent an encrypted postcard from St. Petersburg, Russia, to Vaasa, Finland. Can a reader decrypt it?

Gianone-poem-bar

Pietro Giannone (1791–1872), an Italian poet and patriot, left behind an encrypted poem filling a whole book. After nearly 150 years, mathematics teacher Paolo Bonavoglia broke the encryption.

Violine-bar

In the 1950s the Germans used a unique crypto device named “Violine”. I have always wondered what it was used for. In a book about espionage I found the likely answer.

Escape-Room-bar

Last week I had the chance to visit an escape room operated by a company named “Cryptology”. Here’s my report.

World-War

A British censorship manual from WW2 gives an overview on message hiding techniques. Some of the examples given are messages hidden in letters from prisoners of war.

Janes-Tenzer-bar

130 years ago, Briton Alfred Janes published a self-invented encryption method along with a challenge cryptogram. My blog readers could solve this tricky mystery.

Voynich-facsimile-2-bar

A Spanish company has bought the rights to make 898 official replicas of the Voynich manuscript. Another unofficial replica already exists – mine.

Nomenclator-Post-bar

The British National Archive has published an encrypted letter from the 17th century. The solution is known, but many other encrypted notes of the same kind still wait to be broken.

Union-Jack-bar

Ein Hinweis in eigener Sache: Auf vielfachen Leserwunsch werde ich von jetzt an ab und zu einen Blog-Artikel auf Englisch verfassen.