In reply to a post by https://fireburn.ru/ on
Did somebody invent a play by #webmention #game like #indieweb chess? If not, I want to be the first one to implement it! Markup: p-chess-move - a move in some sort of a universally accepted notation. And a service you can mention so it’ll record the game and check rules.

haha back in the day on App.net (RIP) there was chess via posts.. (source of that app is actually open)