Who has beaten a chess master before? (CM IM, GM, etc.)

I beat a FM once in a tournament. Have also defeated NMs. And a GM once in a simultaneous - he's now famous as an online commentator and still active.

I beat a WGM in ultrabullet once, and an IM in atomic x2.

I haven't beaten they but I sometimes draw vs they and sometimes I lose:(.

can't find the game, but Magnus Carlsen has never defeated me :)

@Covester said in #25:

can't find the game, but Magnus Carlsen has never defeated me :)

that's something I can't claim for myself!