Claude Fable 5.1 Solves the Cyphral Distich, a 370-year-old cipher

Claude Fable 5.1 successfully deciphered Sir Thomas Urquhart's Cyphral Distich, a 370-year-old unsolved cipher, by recognizing that the key was embedded within the text itself rather than being an external cipher alphabet. The solution involved using 32 Proquiritations (formulations of wishes) from Urquhart's book as a key to extract the first letter of specific words, revealing the message "O GOD UPHOLD KING CHARLS THE SECOND AND MAKE HIM THE SUPREME RULER OF THIS LAND."