Change:  reported a 700 percent spike in pencil sales from "the thinking person's crack cocaine." British Airways forbids its flight attendants from puzzling over sudoku during takeoff and landing. (Source: The New York Times, 05/06/06) ResourcesFor such a simple puzzle, sudoku has a storied past,   View changes from previous version. (Word count: 422)

Change:  Simply o mirjist8390a 469h7n w7n-77w6 7*There IS Virus in this site!!!!!   View changes from previous version. (Word count: 13)

Change:  seemed to achieve ubiquity overnight in 2005, the puzzle has actually been around for decades. So-called magic squares were an occasional pastime amondksg;gk fd;g;k kfgkjlk   View changes from previous version. (Word count: 12)

Change: fd;g;k kfgkjlk fka ;lk fjfg jfg 9749 fs984 g smarties during the days of Ben Franklin, who enjoyed the puzzles. Assigning absolute authorship for the modern version's invention is akin to crediting the wheel's designer, but several key people were integral to the creation of sudoku as we   View changes from previous version. (Word count: 544)

Change: sudoku.sudoku. Pronounced "soo-DOH-koo," the word roughly translates as "only single numbers allowed." In 1997, Wayne Gould, a New Zealander and retired Hong Kong judge, was vacationing in Tokyo, where he stumbled across a sudoku book. It intrigued him and he developed   View changes from previous version. (Word count: 532)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 532)

Change: History of Sudoku"MathWorld, "Sudoku"Time, Profile of Wayne GouldThe Times of London, "The Puzzle That Ate the World"The Telegraph of Calcutta, "Your Number's Up"The Associated Press, "Sudoku Hooks Fans of Puzzles"See also:Solving StrategiesSources for PuzzlesStumped and Stumpers Sudoku 101   View changes from previous version. (Word count: 540)

Change: In Japan, the puzzles are called by their English name, Number Place; in English publications, the puzzles go by their Japanese name, sudoku. Go figure.London newspaper The Independent reported a 700 percent spike in pencil sales from "the thinking person's crack cocaine."British Airways forbids its   View changes from previous version. (Word count: 537)

Change:  Though sudoku seemed to achieve ubiquity overnight in 2005, the puzzle has actually been around for decades. So-called magic squares were an occasional pastime among   View changes from previous version. (Word count: 284)