Anyone who’s taken language lessons on the Duolingo app is certainly familiar with the Duolingo owl, Duo. If you skip out on lessons, Duo will ping you — crying! — to come back. Over the past few ...

It is the sort of thing that would send Bobby Fischer into a tirade. Here, in the first round of the Maryland Scholastic Chess Championship, Patrick Allen’s chessboard – the plastic roll-up kind – is ...