Endgame is the term used to describe an ending in chess where the outcome is already known. Chess masters often study endgames in order to guarantee themselves victory once they maneuver their opponent into a certain position. Beckett, an avid chess fan, saw the parallel between the chess endgame the final stages of life. He realized that death is the final outcome and that regardless of how a person plays the game, he or she will die. The imagery of chess is presented in the play through Clov and Hamm who are red and Nagg and Nell who are white.
The stage setting is important because it has been likened to a skull. The two windows on the back wall form the eye sockets of this skull, and the characters represent the brain and memory. Thus the entire stage serves as a metaphor for an aging mind.
This skull-like setting is complemented by several textual references to Dante's Inferno. For instance, Clov comments at one point that they are in a refuge between earth and sea, while Hamm observes, "That here we're down in a hole." The text later adds that the sun is sinking, "down among the dead," that they are beyond certain hills, and that beyond the walls, "is the...other hell." The implication of placing the characters in Dante's inferno is that they will be doomed to repeating the act of their crime for all eternity. In typical Beckettian fashion, the crime can be viewed as "life," meaning that they are doomed to repeat life forever.
The subject of Endgame is whether Clov will leave Hamm. Their relationship, which alternates between slave/master and son/father, is also a mutually beneficial one. Hamm provides food and shelter, whereas Clov provides legs and eyesight. Part of the problem with Clov leaving is that doing so is an act of suicide. If he leaves Hamm, he will not have any food, and without someone to feed him, Hamm will die as well.
The relationship between Hamm and Clov is also confused by Hamm's biographical story.