This is the archive of the old posts from Djape .Net, more or less as they used to be. Please go to djape.net to see the new website.

KILLER Samurai

By djape | Published: December 16, 2005
At long last, I just uploaded my first ever Killer Samurai Sudoku. As all our other puzzles – it’s PERFECT ;). Why: 1. It has one and only one solution. If you claim differently – triple check all the rules that apply. 2. This solution can be found by logic only – no trial and error is needed. 3. It’s symmetrical. (Killers are 2-way symmetrical, while other overlapping puzzles can be made 4-way or 2-way symmetrical) 4. There are no singleton cages. This puzzle should take you through the weekend. Let me know how difficult you find it. UPDATE: I moved the puzzle and attached it to this message.
(click to download or right-click to save the image!)

Killer Sudoku Samurai: 65 puzzles (Volume 1)


To see the solution to this puzzle click here

The first step (innies and outies) in solving it is here. I’ve also published several Killer Samurai Sudoku books. Check them out!
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8 Comments

  1. Nicole
    Posted December 17, 2005 at 4:04 pm | Permalink

    I can’t find where to download Killer Samurai for Dec 16. What do I click on?

    Reply
  2. djape
    Posted December 17, 2005 at 4:54 pm | Permalink

    Nicole, it’s on the “Daily Killer” page… or to make it easier for you, here is the link:
    http://www.djapedjape.com/download/killer/killersamurai20051216_0.png

    Enjoy!

    Reply
  3. Argon0
    Posted December 20, 2005 at 3:54 pm | Permalink

    Nice one djape.

    Took me a while to solve it, but was pretty straight forward, just LONG….

    BTW I can’t see the symmetry….

    Reply
  4. udosuk
    Posted December 20, 2005 at 4:30 pm | Permalink

    The symmetry is as a whole, but each individual 9×9 grid at the 4 corners are not symmetric…

    An idea for djape: is it possible to construct an overlap puzzle that’s putting 4 9×9 grids together to form a 12×12 grid? And instead of naming it unimaginatively as “Quadruple Trouble” etc I suggest it be called “Butterfly” or “Butterfly X” (shaping like 4 wings of a butterfly). Just a thought…

    Merry X’mas & Happy New Year to all!

    Reply
  5. djape
    Posted December 20, 2005 at 5:23 pm | Permalink

    Udosuk, I think it is possible. Check the “Daily Sudoku” page for confirmation. 🙂

    Reply
  6. djape
    Posted December 20, 2005 at 4:22 pm | Permalink

    ArgonO, yes, the puzzle is 2-way symmetrical (diagonally symmetrical, to be precise). So, if you cut it on the diagonal and rotate one half by 180 degrees you will get the same shape as in the other half.

    All Killer Sudoku puzzles posted here are symmetrical in the same way.

    Reply
  7. Argon0
    Posted December 21, 2005 at 11:25 am | Permalink

    Ah, rotationally symmetrical – now I understand…

    Reply
  8. LA
    Posted December 24, 2005 at 11:59 pm | Permalink

    That was hard…

    I had to resort to possible sums more than a few times, but I got there in the end.

    Not looking forward to the Christmas Killer…

    LA

    Reply

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