This 15th-Century Book Has Defied Translation. Cards and Dice May Be Key  | Metaglossia: The Translation World | Scoop.it
A newly-developed cipher could finally shine light on how the strange text of the Voynich manuscript was devised.

"The Voynich manuscript—a mysterious medieval book that has defied translation for centuries—may have been created using a special code developed with the help of cards and dice, a new study suggests.


Named for Wilfrid Voynich, the Polish book dealer who purchased it in 1912, the manuscript's bizarre text is now thought to have been made using a cipher involving randomized elements.


Dating back to the 15th century, the manuscript contains about 38,000 words written in its unknown language, as well as unusual images including depictions of unknown plants, astrological symbols and even naked women bathing, in what some believe to be a representation of biological themes. The work is now housed in the collections at Yale University.


In the study, published in the journal Cryptologia, science journalist Michael Greshko suggests that a cipher which he calls "Naibbe," inspired by a 14th-century Italian card game, could shine a light on how the manuscript's text was made.


The Naibbe cipher uses a combination of dice rolls and playing cards to turn normal language into symbols that resemble those featured in the manuscript’s glyphs.


While the cipher doesn’t decode the Voynichese text, it provides a possible method to understand how it may have been created.


Naibbe works by rolling a die to break up the word into smaller parts. Then it draws a card to determine which of six different tables is used to encrypt the letters into Voynichese. 


Over the years many theories have been made about the Voynich manuscript's meaning, with some believing it to be a medieval hoax.


Recent efforts to decode the manuscript have included using advanced machine learning techniques and other computerized artificial intelligence, which have failed to crack the code.


Greshko's Naibbe cipher is one of the closest attempts yet. Speaking to Live Science, he said that the Naibbe cipher is almost certainly not the way that the manuscript was constructed, but it provides a fully documented way to reliably go between Latin and "something that behaves kind of like the Voynich manuscript."


René Zandbergen, a renowned Voynich expert who was not directly involved in Greshko's study, cautioned that we should not assume it is the exact method used to make it, adding that he’s still unsure about whether the text has an actual meaning or it is indeed a hoax.


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Reference
Greshko, M. A. (2025). The Naibbe cipher: A substitution cipher that encrypts Latin and Italian as Voynich Manuscript-like ciphertext. Cryptologia. https://doi.org/10.1080/01611194.2025.2566408";
January 07, 2026
Maria Azzurra Volpe


https://www.newsweek.com/voynich-manuscript-15th-century-book-cards-dice-cipher-naibbe-11316017
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