Safecracker 50 Wooden Math Brain Teaser | Difficult Puzzle for Adults police gifts for him providing a delightful challenge that’s

providing a delightful challenge that’s sure to entertain

Add up your score in the barn windows

They turn on a strong nylon bungee cord

Includes display frame

From the starting positions lasered into the base of the board

Safecracker 50 Wooden Math Brain Teaser | Difficult Puzzle for Adults police gifts for him providing a delightful challenge that’sSafecracker 50 is a handcrafted wooden math brain teaser designed and built by Dave Janelle and the family workshop crew in Hudson, Florida. Five rotating rings (one base ring plus four top rings), laser cut from maple and cherry hardwoods, with deeply laser engraved numbers. The goal is to align the rings so each of 16 vertical columns sums to 50. There are exactly 1,048,576 ways to align the rings (over a million). Only one is correct. Palm sized at