Blog reader Jozef Krajčovič has sent me a turning grille ciphertext he found in an 1870 scientific journal. Can a reader decipher it?
Alexander Hamilton, one of the Founding Fathers of the United States, has become especially popular since a musical was written about him. Hamilton left behind a 26×26 turning grille.
In the novel Mathias Sandorf by Jules Verne the use of a Turning Grille is described. Does a reader know other encrypted messages of this kind?