Mage on Here There Be Pirates

A pack of mages appear in your path. They refuse to let anyone pass. This looks like a situation that could resort to violence, but you respect your those who might be more powerful than yourself. One mage challenges you to a battle of wits with a game of chess. If he wins, you die. If you win, the mages will permit you to pass. In this battle you are weaponless. You draw your sword.