More Sudoku math

“Two researchers have developed a mathematical algorithm that solves Sudoku puzzles very quickly, without any guessing or backtracking.

Complex networks researcher Zoltan Toroczkai and Notre Dame postdoctoral researcher Maria Ercsey-Ravasz, from the University of Notre Dame also say they can also explain why some puzzles are harder than others.

The only drawback is that you need a PhD in mathematics to understand just what they’re proposing.”

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