World's Hardest Sudoku
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http://www.telegraph.co.uk/science/science-news/9359579/Worlds-hardest-sudoku-can-you-crack-it.html
For those who like a Maths question! Vote up if you like it! -P.S- Only for serious mat geeks. Others, sharpen your pencils and get lots of paper....and time!
1761 views
updated Jul 10, 2012
posted by TheGreatest
1 Answer
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Hey, there!
Please post non-Spanish-learning stuff in Joe's Tavern, the place where (almost) all is permitted and all is possible!
updated Jul 10, 2012
posted by --Mariana--
