Claude Fable 5.1 reportedly cracks Sir Thomas Urquhart’s 370-year-old Cyphral Distich after spotting overlooked 32-line clue

The article says Claude Fable 5.1 solved Sir Thomas Urquhart’s Cyphral Distich, a 64-number cipher that had resisted researchers for centuries. The model reportedly found the key by connecting the cipher to Urquhart’s preceding 32 Proquiritations, a clue earlier solvers had missed.

If independently verified, the result highlights how advanced models can combine persistence, pattern recognition, and broad contextual reasoning in niche historical problems. It also points to a growing role for AI-assisted research in cryptography, archives, and the digital humanities, while underscoring the need for expert validation.