Monday, January 21, 2013

17

A sudoku puzzle must have at least 17 numbers to be filled in to be solvable.
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3 comments:

  1. Don NaffJanuary 30, 2013 at 9:40 PM

    Is there a proof of this?

    ReplyDelete
  2. Amy W.January 31, 2013 at 5:28 PM

    I'm sure there is.

    ReplyDelete
  3. Amy W.January 31, 2013 at 5:36 PM

    http://www.nature.com/news/mathematician-claims-breakthrough-in-sudoku-puzzle-1.9751

    ReplyDelete

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