Disentanglement puzzle
Plate-and-ring puzzles
A plate-and-ring puzzle usually consists of three pieces:
one plate or similar displaying many holes and/or indentations
a closed or nearly closed ring or a similar item.
The plate as well as the ring are usually made from metal. The ring has to be disentangled from the plate.
Rattler puzzles
Rattler puzzles consist of many smaller pieces assembled on a main piece which may have a big handle to hold the puzzle. The movable pieces have to be arranged just right to let a first piece be separated from the rest of the assembly. In this respect rattler puzzles are closely related to the lock puzzles and puzzle locks.
Wire puzzles
A wire puzzle in unsolved form
The same puzzle in solved form
Wire puzzles consist of two or more entangled pieces of more or less stiff wire. The pieces may or may not be closed loops. The closed pieces might be simple rings or have more complex shapes. Normally the puzzle must be solved by disentangling the two pieces without bending or cutting the wires.
Early wire puzzles were made from horseshoes and similar material.
Wire-and-string puzzles
Wire-and-string puzzles usually consist of:
one piece of string, ribbon or similar, which may form a closed loop or which may have other pieces like balls fixed to its end.
one or several pieces of stiff wire
sometimes additional pieces like wooden ball through which the string is threaded.
One can distinguish three subgroups of wire-and-string puzzles:
Closed string subgroup: Here the pieces of string consist of one closed loop. Usually the string has to be disentangled from the wire.
Unclosed loose string subgroup: Here the pieces of string are not closed, and are not attached to the wire. In this case the ends of the string are fitted with a ball, cube or similar which stops the string from slipping out too easily. Usually the string has to be disentangled from the wire. Sometimes other tasks have to be completed instead, such as shifting a ring or ball from one end of the string to another end.
Unclosed fixed string subgroup: Here the pieces of string are not closed, but are somewhere on its length attached to the wire. Obviously in these puzzles the task is not to disentangle the string from the wire. One possible task may be to shift a ring or ball from one end of the string to another end.
See also
Wikimedia Commons has media related to: Disentanglement puzzles
Human knot
The five pillars puzzle
Categories: Mechanical puzzlesHidden categories: Articles lacking sources from January 2008 | All articles lacking sources
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