Patience Tavern Puzzles Heavy Metal Brain Teaser Old fashioned heavy metal brain teaser disentanglement puzzles. Objective of PATIENCE is to remove the long shuttle (indicated by the blue arrows) from the series of nails and rings. Replacing the shuttle to the starting position is equally as challenging. Rated as a level 4 "Very,Very Severe" (on a scale of 1 to 4). On this scale both level 3 and 4 are very challenging. Hand forged here in the United States of America.