From commit db49a3 (and release 14.0.2) the PureStrategyProfile class has a member function IsNash(), which determines if the profile is a Nash equilibrium of the game.
To this, a few other similar and useful functions can be written:
IsStrictNash(): returns True only if the profile is a strict Nash equilibrium (that is, the payoff is strictly greater than any deviation payoff)
IsBestResponse(GamePlayer): returns True if the player is playing a best response
GetBestResponse(GamePlayer): returns a list of strategies which are best responses for the player (including possibly the strategy the player is playing, if it is a best response).
From commit db49a3 (and release 14.0.2) the PureStrategyProfile class has a member function IsNash(), which determines if the profile is a Nash equilibrium of the game.
To this, a few other similar and useful functions can be written: