Duolingo offers courses on 42 languages, ranging from English, French, and Spanish to less commonly studied languages. Here are highlights of my geological engineer/exploration geologist daughter Évelyne's progress in chess.
Potential Discovery or Invention
As for me, I received e-mail message from Duolingo to "Do a Chess lesson". So, I tapped button "START A LESSON".
However, the response was either "Practice is currently unavailable" (Duolingo app) or "502 Bad Gateway" (Duolingo website). HELP!
