I think we are underestimating how many Jews there are in Russia and Ukraine, or people of partial Jewish ancestry.

Anna Shukhman is a Russian chess champion who won the 2025 FIDE World Junior Girls' Championship at the age of 16. She is a Woman Grandmaster (WGM) and represents FIDE in competitions.
And of course Ian Nepomniachtchi.

I was under the impression that all the Jews left Russia and Ukraine but it turns out there are still TONS of partial Jews.

And then like this pic here, Lindeman is a Jewish name.

However, in high school I knew a girl whose name was Abramowitz but she said she wasn't Jewish at all.