  This paper provides a framework for deriving a new set of necessary
conditions for adverse control problems among two players. The distinguish
feature of such problems is that the first player has a priori knowledge on the
second player strategy. A subclass of adverse control problems is the one of
minimax control problems, which frequently arise in robust dynamic
optimization. The conditions derived in this manuscript are expressed in terms
of relaxed derivatives: the dual variables and the related functions are limits
of computable sequences, obtained by considering a regularized version of the
original problem and applying well known necessary condition. This topic was
initially treated by J. Warga.
