The composition for treating tumors is a natural tumor treatment made from plant extracts, animal secretions and essential oils. The playing segments are disposed relative to one another to define an array of playing spaces on which a game of chess may be played. The pad orthogonal to the curve’s apex is adjustable. The method includes the steps of the subscriber sending a call request and the subscriber’s codec type to a first node within the core network, the first node selecting one of several external gateways in the core network as a function of the codecs determined to be available at the various gateways.