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The rings are interlocked so as not to become misplaced. A puzzle ring is a jewelry ring made up of multiple interconnected bands, which is a type of mechanical puzzle most likely developed as an elaboration of the European gimmal ring. [1] The puzzle ring is also sometimes called a "Turkish wedding ring" or "harem ring."
Several subtypes are included under this category, the names of which are sometimes used synonymously for the group: wire puzzles; nail puzzles; ring-and-string puzzles; et al. [2] [3] Although the initial object is disentanglement, the reverse problem of reassembling the puzzle can be as hard as—or even harder than—disentanglement. There ...
The ant on a rubber rope is a mathematical puzzle with a solution that appears counterintuitive or paradoxical. It is sometimes given as a worm, or inchworm, on a rubber or elastic band, but the principles of the puzzle remain the same. The details of the puzzle can vary, [1] [2] but a typical form is as follows:
The first puzzle started on January 4, 2012, [1] on 4chan [2] and ran for nearly a month. A second round of puzzles began one year later on January 4, 2013, and then a third round following the confirmation of a fresh clue posted on Twitter on January 4, 2014. [3] [4] The third puzzle remains unsolved. The stated intent was to recruit ...
A baguenaudier Diagrammatic representation of a four-ring baguenaudier A metal version of the puzzle. Baguenaudier (pronounced; French for "time-waster"), [1] also known as the Chinese rings, Cardan's suspension, Cardano's rings, Devil's needle or five pillars puzzle, is a disentanglement puzzle featuring a loop which must be disentangled from a sequence of rings on interlinked pillars. [1]
Although the puzzle is a disentanglement-type puzzle, it also has mechanical puzzle attributes, and the solution can be derived as a binary mathematical procedure. The Chinese rings are associated with the tale that in the Middle Ages, knights would give these to their wives as a present, so that in their absence they may fill their time.
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Animation of a cut napkin ring with constant height In geometry , the napkin-ring problem involves finding the volume of a "band" of specified height around a sphere , i.e. the part that remains after a hole in the shape of a circular cylinder is drilled through the center of the sphere.
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