N0 ( blackjack)

 

The number of hands (sometimes expressed in hours of playing time) theoretically required to be played with a certain set of rules and strategy (count, spread etc.) before the player reaches his goal to be ahead by at least one standard deviation. It has been supported as a main measure of every situation's (rules & strategy) assessment mostly by Brett Harris. It is expressed as N0 = Var / EV^2.