It may take an infinite amount of time to solve this mind-boggling metal brainteaser by designer Doug Engel. Try to take the four nickel-plated pieces apart then fit them back together. 2-1/2" in diameter. Solution included.
It may take an infinite amount of time to solve this mind-boggling metal brainteaser by designer Doug Engel.
A great gift for people who love brainteasers and trick puzzles.
Will you be the one to unravel the mystery?
Try to take the four nickel-plated pieces apart then fit them back together. 2-1/2" in diameter.