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Sudoku Killer Insane – with Quad Symmetry

I just uploaded an INSANE Killer puzzle to Daily Killer page. Not only that it has the highest difficulty ranking, but it’s also fully symmetrical, just like yesterday’s BRAIN puzzle. Normally, Sudoku Killer puzzles have “rotational” (or diagonal) symmetry, but I have enhanced my generator to create puzzles with any symmetry – rotational, horizontal, vertical, full (quad) or none at all. This should take you through the weekend 🙂 … or will there be someone to claim that this puzzle is also too easy!? Enjoy!
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  1. Rumpo
    Posted January 20, 2006 at 12:19 pm | Permalink

    Solved it in 90 minutes! Just the right degree of challenge for me.

  2. gherard
    Posted January 21, 2006 at 11:40 am | Permalink

    I just have a problem. I solved it in 30 minutes. But for the easy one of January 19th i´ve just spent 2 hours!!!!
    I need help. My brain is coming insane.

  3. Diana Macpherson
    Posted January 21, 2006 at 10:30 pm | Permalink

    Took me an hour or two … an excellent challenge. (In response to gherard, I’ve also been tripped up by an Easy or Cool killer on occasion.)


  4. Andy Walker
    Posted January 23, 2006 at 9:45 am | Permalink

    I blew it completely and wanted to print off another copy but I could not find the puzzle again on the web site. I can find the post obviously but where do I click to view the actual puzzle?

  5. Posted January 23, 2006 at 9:48 am | Permalink

    Andy, the puzzle has been moved into archive:

    There is a new puzzle on the daily killer page :).

  6. Argon0
    Posted January 25, 2006 at 10:38 am | Permalink

    Can anyone give a link to this puzzle and/or the butterfly killer (17th Jan?) as the puzzle archive only seems to go back about 5 days…


  7. Posted January 25, 2006 at 11:28 am | Permalink

    ArgonO, the insane puzzle is in the archive.

    The killer butterfly is on the main page of the site (try clicking on the “home” link under “links”).

    Not sure what the problem is?

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