Saturday Special – Zero Killer TwoDoku

Here is very difficult Killer Sudoku puzzle. There are two Zero Killer Sudoku puzzles overlapping each other in the TwoDoku format. The difficulty is rated IQ. What do you think?

Zero Killer Twodoku for Saturday, September 20, 2008

(click to download or right-click to save the image!)

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killer sudoku books
To see the solution to this puzzle click here
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2 Comments

  1. Gwyn Morgan
    Posted October 2, 2008 at 12:00 am | Permalink

    Should this one have been rated insane?

  2. Posted October 2, 2008 at 11:13 am | Permalink

    Possibly 🙂

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