Mixed-strategy equilibrium of the symmetric production in advance game: the missing case

The mixed-strategy equilibrium of the symmetric production-in-advance type capacity-constrained Bertrand-Edgeworth duopoly game has not been derived analytically over the entire range of intermediate capacities in the literature. Tasnádi (2020) constructed a symmetric mixed-strategy equilibrium for the production-in-advance game for a large range of intermediate capacities. In this paper we derive for the missing region a symmetric mixed-strategy equilibrium analytically.