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August 4, 2016

Today's Puzzle "Sudoku Original"

Take what you can of these classic Sudoku puzzles and see how far you'll go. Will you solve the numerical riddle?
Play Here
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Don't Just Think Green - Go Green!
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Mathematics of Sudoku
A completed Sudoku grid is a special type of Latin square with the additional property of no repeated values in any partition of the 9×9 block into contiguous 3×3 blocks. The relationship between the two theories is now completely known, after Denis Berthier proved in his recent book, "The Hidden Logic of Sudoku", that a first order formula that does not mention blocks (also called boxes or regions) is valid for....Read On

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