So, I've enjoyed watching a few YouTube videos of a young woman taking her grandmother to Washington Square in New York City to play the chess hustlers. "Grandma" isn't elderly. She looks like a well dressed, sharp older woman maybe in her mid 60s, but of course nobody expects her to beat them. The guys who play in the park aren't top-ranked competitive chess players, but they are excellent speed-chess players. They are not used to losing.

But Grandma beats them every time, game after game.

You should see the relief cross the chest hustlers' faces when Grandma outs herself. "I'm a GM (FIDE grandmaster)," she'll say, very casually, but with an amused little sparkle in her eye.

In every video I've watched, the speed chess player was relieved as heck to find out that little detail. "Oh, thank God," one of them said. "I thought I was losing it."

Each of them (all men) seemed to fully accept that they didn't stand a chance against a certified grandmaster. None of them seemed surprised that a woman could hold that rank. They seemed to take for granted that anybody with that rank could beat them without much trouble.

Man or woman.

Somebody should tell FIDE.