Discovery could lead to more difficult Sudoku puzzles

(PhysOrg.com) -- A new analysis of number randomness in Sudoku matrices could lead to the development of more difficult and multi-dimensional Sudoku puzzles. In a recent study, mathematicians have found that the way that numbers are arranged in Sudoku puzzles is even more random than the number arrangements in randomly-generated matrices. The counter-intuitive discovery may enable researchers to develop algorithms that generate Sudoku matrices with fewer clues, making them more difficult to solve.

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