The case of the hidden hand

This ‘Russian Cards’ problem originated at the Moscow Math Olympiad 2000. An analysis in dynamic epistemic logic and various solutions are presented in [vD03]. But there remained some open questions related to the dynamics. In this contribution we answer one of those questions. They are not trivial, because the interpretation of an announcement that is made towards a solution of the problem, also depends on the commonly known intentions of rational agents executing a protocol resulting in such an announcement. These intentions, standardly delegated to the pragmatics of communication, can be drawn into the semantics of utterances. In plain words: what you mean, is more than what you say.