Fighting Fantasy - Deathtrap Dungeon: - Rules of Play says:
Down in the twisting labyrinth of Fang, unknown horrors await you. Countless adventurers before you have takes up the challenge of the Trial of Champions, but not one has survived. Devised by the devilish mind of Baron Sukumvit, the labyrinth is riddled with fiendish traps and hideous creatures of darkness to trick and test you almost beyond the limits of endurance!