A Possibly easy for you, but hard for me Question about Sudoku

  1. A "Possibly easy for you, but hard for me" Question about Sudoku

    How to calculate the maximum number of valid patterns on a 9x9 Sudoku board?

    I was coding a flash application which is basically a "sudoku solver". This question is not related with qhat I'm doing but just curious.

    Please, generalize your answers to NxN boards also, if you can.
  2. jcsd
  3. Wolfram MathWorld has a pretty interesting entry about Sudoku. There are also a couple of noteworthy references to read as well.
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