A fas­ci­nat­ing New York Time arti­cle on solv­ing puz­zles: Why you do it, how you do it, and what’s going on in your brain while you do it. The appeal of puz­zles goes far deep­er than the dopamine-reward rush of find­ing a solu­tion. The very idea of doing a cross­word or a Sudoku puz­zle typ­i­cal­ly shifts…