Challenge to call to engage in a contest or battle. If a Red Caste is challenged by a Gorean that is to equal or greater value to Him, He must accept the challenge, however the challenge must be made in an open room, no ims or other forms of comunication are accepted. It is a Red Castes code not to step down from a challenge doing so shows the Red Caste to be weak. A Red Caste would rather die then show weakness. This doesn't apply to Mercenaries or Outlaws, they don't abide by Red Caste codes and can openly refuse a challenge if it doesn't suit them to engage in it. Yet by doing so it does show them as weak and most Gorean Males would rather die then show weakness.