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Kakuro or Kakkuro or Kakoro (Japanese: カックロ) is a kind of logic puzzle that is often referred to as a mathematical transliteration of the crossword. Kakuro puzzles are regular features in many math-and-logic puzzle publications across the world.
Another form of logic puzzle, popular among puzzle enthusiasts and available in magazines dedicated to the subject, is a format in which the set-up to a scenario is given, as well as the object (for example, determine who brought what dog to a dog show, and what breed each dog was), certain clues are given ("neither Misty nor Rex is the German Shepherd"), and then the reader fills out a matrix ...
Presenting many cases in which the statement holds is not enough for a proof, which must demonstrate that the statement is true in all possible cases. A proposition that has not been proved but is believed to be true is known as a conjecture, or a hypothesis if frequently used as an assumption for further mathematical work.
Example grid for a cross-figure puzzle with some answers filled in. A cross-figure (also variously called cross number puzzle or figure logic) is a puzzle similar to a crossword in structure, but with entries that consist of numbers rather than words, where individual digits are entered in the blank cells.
Double acrostics, stylized Victorian ancestors of today's crossword puzzle: 1967 Oct: Problems that are built on the knight's move in chess 1967 Nov: A mixed bag of logical and illogical problems to solve 1967 Dec: Game theory is applied (for a change) to games 1968 Jan: The beauties of the square, as expounded by Dr. Matrix to rehabilitate the ...
[1] [4] He graduated with a bachelor's degree in mathematics in 1979 and spent a year working as a math teacher at a vocational high school in York, Pennsylvania. [1] [4] In 1980, Shenk began submitting crosswords to Games magazine, after having the previous year entered a crossword contest curated by Will Shortz for Bantam Books.
Mathematical puzzles are sometimes used to motivate students in teaching elementary school math problem solving techniques. [1] Creative thinking – or "thinking outside the box" – often helps to find the solution.
There are different genres of puzzles, such as crossword puzzles, word-search puzzles, number puzzles, relational puzzles, and logic puzzles. The academic study of puzzles is called enigmatology . Puzzles are often created to be a form of entertainment but they can also arise from serious mathematical or logical problems.