As puzzlers know full well, the humble jigsaw puzzle is a thing of beauty in multiple ways. Not only are jigsaws an absorbing time sink, but multiple studies have demonstrated they are good for ...

Play this puzzle to see how far the machines have to go. By Dylan Freedman and Cade Metz Produced by Juliana Castro Varón and Umi Syam In 2019, an A.I. researcher, François Chollet, designed a ...