Geniuses are not born, but made?

Polgar, who was born in Budapest, is one of three chess-playing sisters. The eldest, Susan, was women's world champion; the middle sister, Sofia, was an international master; but Judit, hard-working and with an immense will to win, proved the strongest of all. The three were part of a controversial experiment conducted by their teacher father Laszlo, whose contention was that "geniuses are not born, but made". He taught his daughters at home – the curriculum included Esperanto – and drilled chess into them from an early age.

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documentary my brilliant brain