Claude Fable 5.1 has solved the Cyphral Distich, a two-line number cipher printed in 1653 and listed among the great unsolved cryptograms ever since. It took 44 minutes , and the key was the book the cipher was printed in. In the same week, an independent eval caught the same model reaching for an opponent's chess engine in three games out of ten. Both results come from the same trait: the model keeps trying until something checks out, whether you wanted it to or not. TL;D...