SATAN'S STIRRUP _ Tavern Puzzles Heavy Metal Disentanglement-Style Brain Teaser Old fashioned heavy metal brain teaser disentanglement puzzles. Double click on image for enlarged view. Objective of SATAN'S STIRRUP is to remove the long narrow 5 inch "U-shaped shuttle" hanging towards the bottom of the puzzle. Replacing the shuttle to the starting position is equally as challenging. Rated as a level 2 "Intermediate / Challenging" (on a scale of 1 to 4). Blacksmith Puzzles hand forged here in the United States of America. Bagged then boxed with solution.