The world's hardest sudoku - solved
We asked a reader to put Finnish mathematician Arto Inkala's sudoku to the testLast week saw the unveiling of what is described as "the world's hardest sudoku". It was created by Finnish mathematician Arto Inkala, who said it could take months to solve, barring "three or four lucky guesses". David Rowe, a retired economics academic and keen sudoku solver (he completes all the Guardian's hard sudokus in under 25 minutes), took up the challenge. He threw down his pencil after 35 minutes. "I don't think this one can be solved by logic alone," he concedes. And he won't be continuing: "Life is too short." (Solution in tomorrow's G2.)NewspapersMathematicsPamela Hutchinsonguardian.co.uk © Guardian News & Media Limited 2010 | Use of this content is subject to our Terms & Conditions | More Feeds
The world's hardest sudoku - solved
Put down your pencils, here is the solution to Finnish mathematician Arto Inkala's fiendish puzzleYesterday we printed the "world's hardest sudoku", created by Finnish mathematician Arto Inkala. ...
Mon 23 Aug 10 from Guardian.co.uk
The world's hardest sudoku?
We asked a reader to put Finnish mathematician Arto Inkala's sudoku to the testLast week saw the unveiling of what is described as "the world's hardest sudoku". It was created by Finnish mathematician ...
Mon 23 Aug 10 from Guardian.co.uk
Can You Crack the World's Toughest Sudoku?
A Finnish mathematician has created what he calls the world's toughest sudoku -- a puzzle that took three months to create and has just one solution. 
Thu 19 Aug 10 from FOXNews
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