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A puzzle in which a grid consisting of several regions is to be filled with numbers so that every row, column, and region contains only one instance of each number. The most common format is a grid of nine rows and columns that are divided into nine smaller regions of three rows and three columns into which the numbers 1 through 9 must be placed.

[Japanese sūdoku, contraction of sū(ji wa) doku(shin ni kagiru), the numbers are limited to a single occurrence (the phrase under which sudokus appeared in a magazine which popularized them in Japan in the 1980s) : sū(ji), number + doku(shin), single.]


(Other Non-sporting Hobbies) a type of puzzle in which numbers must be arranged within a grid containing several internal squares so that no number is repeated in the same row, column, or internal square
[C21: from Japanese su number + doku single]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sudoku - a number puzzle in which the numbers 1 through 9 must be placed into a grid of cells so that each row or column contains only one of each number
mystifier, puzzle, puzzler, teaser - a particularly baffling problem that is said to have a correct solution; "he loved to solve chessmate puzzles"; "that's a real puzzler"
References in periodicals archive ?
20, 2014 /PRNewswire-iReach/ -- popular game, Sudoku Free, is now optimized for Android* Intel Atom(TM) tablets for Android*.
Unlike it's numerical cousin, however, where the numbers 1 through 9 are used repeated in every row, column, and 3 3 square, all 27 words used in a 9x9 Anagram Sudoku are different.
The book will be closely followed by more in the series, targeting people's enjoyments, pastimes, and loves: Sudoku for Winter, Sudoku for Spring, Sudoku for Sailors, Sudoku for Bird Lovers, Sudoku for Horse Lovers.
Given the current popularity of jewel based games, we figured that combining Sudoku with jewels would be a perfect match.
His creation, the Beaster Egg challenge may look like a straightforward sudoku, but it has been specially customised for Easter.
University of Notre Dame researcher Zoltan Toroczkai and Notre Dame postdoctoral researcher Maria Ercsey-Ravaz began studying Sudoku as part of their research into the theory of optimization and computational complexity.
Dr Arto Inkala unleashed his first "ultimate" sudoku in 2006, which was solved in 24 hours.
Presented by Renaissance Services SAOG, the Sudoku for Autism event is sponsored by Samsung - SARCO, Khimji Watches, NBO, Al Ansari and Uni-ball.
The Commissionn has received information that a Netherlands-based "Sudoku Sun" company, owned by the Swiss "Bonito" company deals with the sale of Sudoku books.
I became aware of sudoku when it burst on the scene in 2005.
It is sudoku, the puzzle that first became a hit in Japan and is now fascinating Americans.
Today is a great day because the sudoku of the 24th April 2008 has two solutions