Safecracker 50 Wood Puzzle - Difficult Math Brain Teaser for Adults hardest puzzles or remain as shown in

or remain as shown in the picture

Using these you can create your own messages

Mathematician

Not only that puzzles are fun

You can see a picture of what the gear looks like on the mount below

Safecracker 50 Wood Puzzle - Difficult Math Brain Teaser for Adults hardest puzzles or remain as shown inHow It Works Safecracker 50 is a handcrafted mechanical math puzzle designed for serious problem solvers. Your objective is to rotate five laser cut wooden rings until all 16 vertical columns add up to 50 at the same time! Over 65,000 permutations exist, but only one correct solution. To increase the challenge, the top four rings are notched to reveal or obscure numbers on the lower layers, turning 16 columns into 24 possible paths. Built from durable