Quote:
Originally Posted by ArnaldoFior1
Hey, I thought Nash should be used in Heads up situations, isn't it?
The Nash equilibrium is where all players in a game are using a strategy that if deviated from, they will not be playing optimally, provided the other players don't change their strategy.
In poker this most often applies to preflop all ins. This can be with 9 players or 2 players. When the payout structure is not winner takes all (nearly every tournament format), ICM will have some effect on chip values and therefore will change the Nash ranges.
And Nash should be used in heads up situations vs players that are trying to play Nash, and Nash ranges are unexploitable vs all players. But that does not mean that Nash ranges are optimal, as players often deviate from Nash calling ranges.