I agree with what you said. And I also know from my school mates before in NYU that mathematical inclined Russians like to play all those interesting math quiz.

I agree with what you said. And I also know from my school mates before in NYU that mathematical inclined Russians like to play all those interesting math quiz. Also in old Soviet times, engineers and scientists are treated better for their contributions to build socialist heaven :-) But I know the tradition in family maybe more important to inspire offspring. Thinking about Robert Morris father was the author of crypt function in Unix, I guess he may learn from his father when he was a still kid to play those games :-)