sudoku

IPA: sudˈoʊku

(games, puzzles) A type of pencil puzzle played on a square grid, requiring each of the columns, each of the rows, and each of the subregions (called "boxes" or "regions") to contain the lowest whole numbers up to the dimension of the puzzle, usually 1 to 9, once each. The subregions are rectangular or square except in variants.

Examples of "sudoku" in Sentences

Print, play and solve word sudoku to learn English.
Today's Times killer sudoku is a real killer, I only managed to put in three "2" s today.
Though the name, sudoku, is Japanese, the puzzle itself was invented long ago in Switzerland.
Logic games are popular in Japan largely due to the work of Nikoli, which was founded 27 years ago, but sudoku is the only one known abroad.
For everybody who wants to try out something new in sudoku, try shendoku, using the sudoku rules but playing two people, one against the other, like battleshipps.
Microsoft says it's added "nearly 100" titles, courtesy of its Microsoft Games division, but many searches I tried ( "sudoku," "checkers," "Risk") didn't pan out.
So I will post two links a day, one to the daily killer, and one to an interactive plain sudoku on the same site (as you can't get an interactive killer free on that site).