I even beat the very Mikhail Tal once, who was a prominent figure and a great chess player. Moreover, he was out of competition in blitz. In England, in Hastings, two tournaments - men's and women's - were held simultaneous and in the beginning they held a blitz tournament with a symbolic prize fund - they raised five pounds from all who was willing to donate.
And they played without a usual clock but using a gong. As soon as it struck, you need to make a move, otherwise, you are defeated. Several people made it to the finals, including me, the only woman. So, Tal sacrificed a piece to me in the opening. In general, he always sacrificed a lot and later he said that he wanted to test me, but apparently, he did it simply because a woman was sitting in front of him. Tal attacked, I successfully defended and in the end, I won. More than once I played classical chess and blitz with him, there were draws, but I could not win anymore.