 For instance, if the statement is a conjunction, there are two appropriate challenges, one for each conjunct, which consist in requesting that the other player states the chosen conjunct. There is one appropriate defence for each challenge, which consists in stating the requested conjunct. The particle rules define both the meaning of connectives and the statement based on its form. These particle rules explicit the meaning of statements in terms of the players’ various commitments and entitlements regarding each statement—i.e., what moves are allowed.