It isn’t too hard to imagine future, post-internet linguists pondering over a few scraps of surviving paper containing an alphabet mingled with strange cross-hatchings, like mini tic-tac-toe boards, and wondering: What we were trying to communicate?

Source: https://qz.com/elon-musk-s-twitter-has-even-lost-the-man-who-populariz-1850347437

The tic-tac-toe position above was reached in a game between two flawless players, meaning neither of them ever made a move that would allow their opponent to win by force and neither of them missed an opportunity to force a win themselves.

Source: https://gizmodo.com/gizmodo-monday-puzzle-reverse-tic-tac-toe-1850185433