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A [[chess problem]] is a puzzle that uses chess pieces on a chess board.
A [[chess problem]] is a puzzle that uses chess pieces on a chess board.

What Color Was the Mamu? (answer)
© Copyright 2001, Jim Loy
I'll repeat the puzzle:
A hunter walked one kilometer south from his camp. Then he walked one kilometer west. There he shot a mamu. Then he walked one kilometer north, and found that he was back at his camp. What color was the mamu?
Answer:
The mamu is black. Only at the North Pole can the conditions of the above puzzle be satisfied. Here is the hunter's map of his journey.
All of the conditions of the puzzle, except one, can also be met near the South Pole. There are no mamus in Antarctica. But our hunter could follow a path as described above. Camp is 1+1/(2pi) kilometers from the South Pole. The hunter walks one kilometer south, and then one kilometer west, completely around the Pole, and then walks one kilometer north to his camp. There are actually other distances that our hunter's camp can be from the South Pole, and still satisfy the terms of the problem (except for the mamu). Before reading the next paragraph, can you imagine how that is possible?
The other solutions (without the mamu) are to position the camp so that the westward journey of one kilometer, goes twice around the pole (1+1/(4pi) km), or three times around the pole (1+1/(6pi) km), or four times, etc. There are infinitely many such situations.
This problem is somewhat similar to H. E. Dudeney's question about how a rectangular house can be built so that the windows on all four sides are facing south. The house happens to be at the North Pole.
Return to the original problem.


==Types of puzzles==
==Types of puzzles==

Revision as of 17:30, 19 September 2009

A puzzle is a problem or enigma that tests the ingenuity of the solver. In a basic puzzle, one is intended to piece together objects (puzzle pieces) in a logical way in order to come up with the desired shape, picture or solution. Puzzles are often contrived as a form of entertainment, but they can also stem from serious mathematical or logistical problems — in such cases, their successful resolution can be a significant contribution to mathematical research.[1]

Solutions to puzzles may require recognizing patterns and creating a particular order. People with a high inductive reasoning aptitude may be better at solving these puzzles than others. Puzzles based on the process of inquiry and discovery to complete may be solved faster by those with good deduction skills.

History

The first jigsaw puzzle was made around 1760, when John Spilsbury, a British engraver and mapmaker, mounted a map on a sheet of wood that he then sawed around each individual country. Spilsbury used the product to aid in teaching geography. After catching on with the wider public, this remained the primary use of jigsaw puzzles until about 1820.[2]

By the early 20th century, magazines and newspapers found that they could increase their daily subscriptions by publishing puzzle contests.

Contemporary puzzles

A sample of notable puzzle authors includes Sam Loyd, Henry Dudeney, Boris Kordemsky and, more recently, David J. Bodycombe, Will Shortz and Martin Gardner.

There are organizations and events catering puzzle enthusiasts such as the International Puzzle Party, the World Puzzle Championship and the National Puzzlers' League. There are also Puzzlehunts like Maze of Games.

The Rubik's Cube and other combination puzzles are toys based on puzzles that can be stimulating toys for kids and are a recreational activity for adults. Puzzles can be used to hide or obscure objects. A good example is a puzzle box used to hide jewelry.

Games are often based on a puzzle. For example there are thousands of computer puzzle games and many letter games, word games and mathematical games which require solutions to puzzles as part of the gameplay. One of the most popular puzzle games is Tetris.

A chess problem is a puzzle that uses chess pieces on a chess board.

Types of puzzles

The large number of puzzles that have been created can be divided into categories, for example a maze is a type of tour puzzle. Other categories include construction puzzles, stick puzzles, tiling puzzles, transport puzzles, disentanglement puzzles, jigsaw puzzles, lock puzzles, folding puzzles, combination puzzles and mechanical puzzles.

A meta-puzzle is a puzzle which unites or incorporates elements of other puzzles. It is often found in puzzlehunts.

Etymology

The 1989 edition of the Oxford English Dictionary dates the word puzzle (as a verb) to the end of the 16th century. That first documented use comes from a book called The Voyage of Robert Dudley...to the West Indies, 1594-95, narrated by Capt. Wyatt, by himself, and by Abram Kendall, master (published circa 1595).

Their research, based on the "chronology of the words, and still more the consideration of their sense-history, seem[s] to make it clear that the verb came first, and that the noun was its derivative."

See also

References

  1. ^ Kendall G., Parkes A. and Spoerer K. (2008) A Survey of NP-Complete Puzzles, International Computer Games Association Journal, 31(1), pp 13-34
  2. ^ Puzzle History
  • Creative Puzzles of the World, 1980, Plenary Publications International
  • Denkspiele Der Welt, München 1977,1981, Heinrich Hugendubel Verlag