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A puzzle is a game, problem, or toy that tests a person's ingenuity or knowledge. In a puzzle, one is required to put pieces together in a logical way, in order to arrive at the correct solution of the puzzle. There are different types of puzzles for different ages, such as crossword puzzles, word-search puzzles, number puzzles, or logic puzzles. Puzzles are often devised as a form of entertainment but they can also arise from serious mathematical or logistical problems. In such cases, their solution may be a significant contribution to mathematical research.〔Kendall G.; Parkes A.; and Spoerer K. (2008) ''A Survey of NP-Complete Puzzles'', International Computer Games Association Journal, 31(1), pp 13–34.〕 Solutions of puzzles often require the recognition of patterns and the creation of a particular kind of order. Sometimes not because of how complicated and diagonal the pattern can get. People with a high level of inductive reasoning aptitude may be better at solving such puzzles than others. But puzzles based upon inquiry and discovery may be solved more easily by those with good deduction skills. Deductive reasoning improves with practice. Some notable creators of puzzles are Sam Loyd, Henry Dudeney, Boris Kordemsky and, more recently, David J. Bodycombe, Will Shortz, Lloyd King, and Martin Gardner. ==Etymology== The 1989 edition of the ''Oxford English Dictionary'' dates the word ''puzzle'' (as a verb) to the end of the 16th century. Its first documented use (to describe a new type of game) was in a book titled ''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). The word later came to be used as a noun. The word puzzle comes from ''pusle'', meaning "bewilder, confound", which is a frequentive of the obsolete verb ''pose'' (from Medieval French ''aposer'') in the sense of "perplex". The use of the word to mean "a toy contrived to test one's ingenuity" is relatively recent (within mid-19th century). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「puzzle」の詳細全文を読む スポンサード リンク
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