Game Theory (poker)
Betting or calling in a certain way when you don't know how
an opponent plays so as to
prevent the opponent from obtaining an edge by his own betting
or calling. Against an
opponent whose play you are familiar with, you bluff more or
less often depending on what you know of his calling habits.
Against one whose habits you don't know, though, you use game
theory.
For example, if there are five bets in the pot and you have
a hand that can win only by
bluffing, if you can get away with a (one-bet) bluff more than
one-fifth of the time, you profit by this use of game theory.