Lots More Information

Related HowStuffWorks Articles

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More Great Links

• Braingle.com
• The Daily SuDoku
• ScienceNewsOnline: Math Trek: Sudoku Math
• Web Sudoku: Billions of Free Sudoku Puzzles to Play Online
• Free Online Sudoku

Sources

• "The World's Most Infectious Puzzle." The Week Magazine.
  http://theweekmagazine.com/article.aspx?id=1271
• How to solve Su Doku: tips
  http://theory.tifr.res.in/~sgupta/sudoku/algo.html
• Sudoku.com
  http://www.sudoku.com/
• Sudoku Online: Home of the Sudokulist
  http://www.sudoku.org.uk/index.htm
• Peterson, Ivars. "Sudoku Math." Science News Online.
  http://www.sciencenews.org/articles/20050618/mathtrek.asp