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WikiPedia: Sudoku http://www.smh.com.au/news/national/from-one-to-ni... http://sudoku.zettahost.bg/ http://www.eurosudoku.com/ http://www.praguepost.com/P03/2006/Art/0323/news5.... http://www.sudokuballdetective.COM/ http://www.time.com/time/magazine/article/0,9171,2... http://www.sudoku-puzzles.mobi/ http://www.sudoku.name/ //doi.org/10.1511%2F2006.57.3475 http://www.sudoku.szhk.sk/