Basic Strategy and Rules of Sudoku
Sudoku is a logical symbol placement puzzle which was originally created in the United States in 1979 under the name of “Number Place”; however, it did not gain popularity until 1986 when it caught on in Japan. After 19 years Sudoku spread from Japan to Great Britain, and from there it continued to spread across the rest of the world and into every home though newspapers and the internet. Because of this I doubt anyone reading this has never seen a Sudoku puzzle, but just in case.