We know what Game Theory is. We know what GTO is. We know what Nash equilibrium is. Links wouldn't hurt, but they're probably not as necessary as you imagine.

Yes, Nash equilibrium is achieved when both player are playing a GTO strat. In the case that both are optimal, then any deviation from their strategy is to a lesser strategy.

When you change your unexploitable (GTO) strategy to exploit a fish, then you become exploitable. This is because the fish was nowhere near playing a GTO line, and so you change your GTO line to exploit this deviation. Which means that you are using an exploitable line.

Don't worry about that. You aren't using that exploitable line against anyone but the fish who motivated it.


Seriously... post a hand where you faced an all-in call and you were not sure whether or not to call with a medium strength hand.