Tower of Hanoi
Proper noun
Meaning
Tower of Hanoi
A mathematical puzzle or game which consists of three rods, and a number of disks of different sizes that can slide onto any rod. The aim is to transfer a stack of disks, one move at a time, to a different rod, while never allowing a larger disk to be on top of a small one.
Examples
A model set of the Tower of Hanoi (with 8 disks) An animated solution of the Tower of Hanoi puzzle for T(4,3).
As mentioned above, the Tower of Hanoi is popular for teaching recursive algorithms to beginning programming students.
In materials science 3D AFM topographic image of multilayered palladium nanosheet on silicon wafer, with Tower of Hanoi-like structure. citation In 2014, scientists synthesized multilayered palladium nanosheets with the Tower of Hanoi like structure.
The minimum number of moves required to solve a Tower of Hanoi puzzle is 2 n - 1, where n is the number of disks.
The Tower of Hanoi is also used as a test by neuropsychologists trying to evaluate frontal lobe deficits.