Before looking for the equilibrium it is worth simplifying the game by eliminating the choices that no rational player would ever make.
Definition — Dominant / dominated strategy
A strategy (row or column) dominates another if its payoffs are in every position of the opponent. A dominated strategy can be rationally eliminated: no rational player plays it.
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Topics: Probabilita
Concepts: Strategia dominante · Strategia dominata · Teoria dei giochi
Methods: Strategia dominante
Skills: Ragionare per casi