There is a new poker computer that is claimed to be unbeatable.
http://www.theguardian.com/science/2015/jan/08/poker-program-cepheus-unbeatable
I beat this computer on my first try today but my friend says that my 100 rounds against the computer was too small of a sample size to prove that the computer's strategy is not optimal. How big should my sample size be?
Edit: This is heads up texas hold'em poker (1 vs 1)