Ps. Kenderov et Jp. Revalski, THE BANACH-MAZUR GAME AND GENERIC EXISTENCE OF SOLUTIONS TO OPTIMIZATION PROBLEMS, Proceedings of the American Mathematical Society, 118(3), 1993, pp. 911-917
The existence of a winning strategy in the well-known Banach-Mazur gam
e in a completely regular topological space X is proved to be equivale
nt to the generic existence of solutions of optimization problems gene
rated by continuous functions in X.