It’s an advanced level only for experienced sudoku solvers. So no need to pace yourself.Sudoku evil is a 9×9 grid sudoku puzzle with the highest possible level of difficulty. That would still take a single person more than 173 years to get through even if he or she could finish one every second. Of all the unique possibilities for a Sudoku puzzle only a (theoretically) more manageable 5,472,730,538 are essentially different and can't be somehow derived from each other. Simply by transposing and rotating the grid or interchanging columns and rows we get exponentially more unique puzzles.īut all of the puzzles created this way are essentially the same the difficulty and probable starting points won’t vary drastically. Using combinatorics, we can take any one Sudoku grid and, with various simple tricks, create enough unique grids for you to do one each day for the next century. So it is a finite system on which combinatorics can be applied. A solved Sudoku grid is a Latin Square of order nine, meaning n=9.

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Sudoku with solution