June 28, 2012
A Finnish mathematician named Arto Inkala claims he's created the world's hardest sudoku puzzle. On a scale of one to five stars (with five being the most difficult), Inkala claims this puzzle would score an eleven.
Can you solve it?
Here's the answer. Don't cheat!
|ShareThis | Posted June 28, 2012 at 7:50 PM|
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