[cosminro]

Here's some more background around Petr http://www.quora.com/Petr-Mitrichev/What-it-is-like-to-meet-...

And some discussion around Russia and China dominating in coding contests http://www.quora.com/Why-do-people-from-Eastern-Europe-and-C...

[plinkplonk]

from the first 'quora' link

"Petr almost never submits any solution without having a rigorous proof even when good mathematical intuition is enough and the proof is hard."

wow! reading this brings home how much I still have to learn. Humbling.