In Number Theory, Logic, and Cryptography

Dorabella Cipher


The Dorabella cipher is contained in a note written by the English composer Sir Edward Elgar to a young lady companion, Dora Penny, in 1897.  The cipher remains unsolved to this day.













The problem is to solve the cipher..


For further information, please see:

[1] http://en.wikipedia.org/wiki/Dorabella_Cipher

[2] http://www.puzzlehead.org/2009/05/unsolved-mysteries-the-dorabella-cipher

[3] http://www.cryptologicfoundation.org/content/Educational-Programs/BooksandThings.shtml


The Dorabella Cipher has now been solved. See items 12 and 36 on the Solutions page.



This web site developed and maintained by

Tim S Roberts

Email: timro21@gmail.com








* There are currently 2 proposed solution on the solutions page.