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Sudokus Mer information om sudokuspelet VideoStep-By-Step Method For Hard Sudokus Sudoku est l'un des jeux de puzzle les plus populaires de tous les temps. L'objectif de Sudoku est de remplir une grille 9x9 avec de chiffres dans lesquels chaque ligne, colonne et section 3x3 contient tous les chiffres de 1 à 9. Sudoku je jedna s nej-populárních puzzle her všech dob. Cílem Sudoku je vyplnit doplnit chybějící čísla 1 až 9 v předem dané zčásti vyplněné tabulce ve které každý řádek, sloupec a 3x3 sekce obsahují všechny číslovky 1 až 9. Play free Sudoku online from Easy to Expert level on killarney-reeks-trail.com Select a difficulty level of a web sudoku puzzle to challenge yourself and enjoy the game!. Sudoku är ett av de mest populära pusselspelen i alla tider. Målet med Sudoku är att fylla ett 9x9-rutmönster med siffror där varje rad, kolumn och 3x3 kvadrat innehåller alla tal från 1 till 9. Play unlimited sudoku puzzles online. Four levels from Easy to Evil. Compatible with all browsers, tablets and phones including iPhone, iPad and Android. Amazing Sudoku Variants. The Guardian. InNikoli introduced two innovations: the number of givens was restricted to no more than 32, and puzzles became "symmetrical" meaning the givens were distributed in Mahjong Rtl symmetric cells. November 24, It comes with many distributions of Linux. March 21, Lin, I-C. A Sudoku puzzle can be expressed as a graph coloring problem. MAA Online. Critically and commercially well-received, it generated particular praise for Sudokus Sudoku implementation    and sold more than 8 million copies worldwide. Innovations in Computing Sciences and Software Engineering. Game loading. Namespaces Article Talk.
In , Nikoli introduced two innovations: the number of givens was restricted to no more than 32, and puzzles became "symmetrical" meaning the givens were distributed in rotationally symmetric cells.
It is now published in mainstream Japanese periodicals, such as the Asahi Shimbun. Cognitive scientist Jeremy Grabbe found that Sudoku involved an area of cognition called working memory.
A subsequent experiment by Grabbe showed that routine Sudoku playing could improve working memory in older people. Over six years, he developed a computer program to produce unique puzzles rapidly.
The first letter to The Times regarding Su Doku was published the following day on November 13 from Ian Payn of Brentford , complaining that the puzzle had caused him to miss his stop on the tube.
The rapid rise of Sudoku in Britain from relative obscurity to a front-page feature in national newspapers attracted commentary in the media and parody such as when The Guardian 's G2 section advertised itself as the first newspaper supplement with a Sudoku grid on every page.
From July , Channel 4 included a daily Sudoku game in their teletext service. It was presented by Carol Vorderman. Nine teams of nine players with one celebrity in each team representing geographical regions competed to solve a puzzle.
Each player had a hand-held device for entering numbers corresponding to answers for four cells. The audience at home was in a separate interactive competition, which was won by Hannah Withey of Cheshire.
Four seasons were produced before the show ended in In , a Sudoku website published songwriter Peter Levy's Sudoku tribute song,  but quickly had to take down the MP3 file due to heavy traffic.
British and Australian radio picked up the song, which is to feature [ when? The Japanese Embassy also nominated the song for an award, with Levy doing talks with Sony in Japan to release the song as a single.
Sudoku software is very popular on PCs, websites, and mobile phones. It comes with many distributions of Linux. Many Nokia phones also had Sudoku.
In fact, just two weeks after Apple Inc. Critically and commercially well-received, it generated particular praise for its Sudoku implementation    and sold more than 8 million copies worldwide.
Larger grids are also possible, or different irregular shapes under various names such as Suguru , Tectonic , Jigsaw Sudoku etc.
The object is the same as that of standard Sudoku, but the puzzle only uses the numbers 1 through 6.
A similar form, for younger solvers of puzzles, called "The Junior Sudoku", has appeared in some newspapers, such as some editions of The Daily Mail.
Another common variant is to add limits on the placement of numbers beyond the usual row, column, and box requirements. Often, the limit takes the form of an extra "dimension"; the most common is to require the numbers in the main diagonals of the grid to also be unique.
The Killer Sudoku variant combines elements of Sudoku and Kakuro. Alphabetical variations have emerged, sometimes called Wordoku ; no functional difference exists in the puzzle unless the letters spell something.
Some variants, such as in the TV Guide , include a word reading along a main diagonal, row, or column once solved; determining the word in advance can be viewed as a solving aid.
A Wordoku might contain words other than the main word. Like the Wordoku, it presents no functional difference from a normal Sudoku, but adds the visual difficulty of using Roman numerals.
It is also known as Windoku because with the grid's four interior regions shaded, it resembles a window with glazing bars. This is one of many possible types of overlapping grids.
The rules for each individual grid are the same as in normal Sudoku, but the digits in the overlapping section are shared by each half.
In some compositions neither individual grid can be solved alone — the complete solution is only possible after each individual grid has at least been partially solved.
Puzzles constructed from more than two grids are also common. Often, no givens are placed in the overlapping regions. Sequential grids, as opposed to overlapping, are also published, with values in specific locations in grids needing to be transferred to others.
A tabletop version of Sudoku can be played with a standard card Set deck see Set game. The Times also publishes a three-dimensional version under the name Tredoku.
Many other variants have been developed. One of these is "Greater Than Sudoku". In this variant all of the positions are filled in.
Tiles are moved to the proper position to solve the puzzle. This variant contains power-ups and a campaign mode. The relationship between the two theories is known, after it was proven that a first-order formula that does not mention blocks is valid for Sudoku if and only if it is valid for Latin squares.
A Sudoku puzzle can be expressed as a graph coloring problem. The fewest clues possible for a proper Sudoku is 17 proven January , and confirmed September The maximum number of clues that can be provided while still not rendering a unique solution is four short of a full grid 77 ; if two instances of two numbers each are missing from cells that occupy the corners of an orthogonal rectangle, and exactly two of these cells are within one region, the numbers can be assigned two ways.
Since this applies to Latin squares in general, most variants of Sudoku have the same maximum. This is roughly 1.
The number of essentially different solutions, when symmetries such as rotation, reflection, permutation, and relabelling are taken into account, was shown to be just 5,,,  sequence A in the OEIS.
A minimal puzzle is one in which no clue can be deleted without losing uniqueness of the solution. However, statistical techniques combined with a puzzle generator  show that about with 0.
From Wikipedia, the free encyclopedia. For the disease with a similar name, see Sodoku. Logic-based number-placement puzzle.
A nonomino or jigsaw Sudoku, as seen in The Sunday Telegraph. Main article: Killer sudoku. Main article: Mathematics of Sudoku. New York.
Retrieved March 4, The Christian Science Monitor. The Prague Post. Archived from the original on August 13, Retrieved February 18, Retrieved June 13, American Scientist.
Pour la Science in French : 1—6. Archived from the original PDF on December 10, Retrieved August 3, Archived from the original on October 10, Times Online.
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