Calcudoku puzzle forum
https://www.calcudoku.org/forum/

Killer Sudoku Jan 13 2020
https://www.calcudoku.org/forum/viewtopic.php?f=18&t=1209
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Author:  allan  [ Mon Jan 13, 2020 8:58 pm ]
Post subject:  Killer Sudoku Jan 13 2020

I have reached a solution on this but the site does not accept it and gives a spurious bad match between two "1"s that are actually OK???
Image
https://imgur.com/61jV6Vq

Author:  pnm  [ Mon Jan 13, 2020 9:27 pm ]
Post subject:  Re: Killer Sudoku Jan 13 2020

allan wrote:
Oh dear! How do I post an image here??


Check out this post, only step 2:

viewtopic.php?f=3&t=38


updated, copied and pasted here:

pnm wrote:

In a browser window, start writing your forum post that is to include image.

Now go to http://www.imgur.com, click "New Post", then "Choose Photo/Video"
and select your image file.

1) it should upload automatically
2) on the next page, hover over the top right of the image, and click on the three dots (...), select "Get share links",
then click the "Copy link" button next to the "BBCode (Forums)" entry
3) go to your forum post, place the cursor where you want the image, and press Ctrl+V


Author:  rafaelhoukes  [ Mon Jan 13, 2020 9:52 pm ]
Post subject:  Re: Killer Sudoku Jan 13 2020

I remember having that same 'solution'.
However, in a Killer sudoku it is not allowed to have two equal numbers in the same cage.
It took me about 20 seconds to solve the puzzle after I stumbled into this mistake, I only had to swap a few numbers.

Author:  allan  [ Mon Jan 13, 2020 10:06 pm ]
Post subject:  Re: Killer Sudoku Jan 13 2020

Thanks to pnm for info on posting images - the image is there now.

rafaelhoukes: The two "1"s are not in the same cage.

Author:  pnm  [ Mon Jan 13, 2020 10:20 pm ]
Post subject:  Re: Killer Sudoku Jan 13 2020

allan wrote:
rafaelhoukes: The two "1"s are not in the same cage.


They clearly are in the same "18+" cage, no?

Author:  paulv66  [ Mon Jan 13, 2020 10:26 pm ]
Post subject:  Re: Killer Sudoku Jan 13 2020

allan wrote:
Thanks to pnm for info on posting images - the image is there now.

rafaelhoukes: The two "1"s are not in the same cage.


Hi Allan

I’m afraid they are. The cage covers the cells 5d, 6c, 6d and 6e. There is a 1 in both 5d and 6c.

Author:  allan  [ Mon Jan 13, 2020 10:58 pm ]
Post subject:  Re: Killer Sudoku Jan 13 2020

Oh. So you can't have the same digit within a calc cage even if they are in different 3x3 cages?

Author:  pnm  [ Mon Jan 13, 2020 11:19 pm ]
Post subject:  Re: Killer Sudoku Jan 13 2020

allan wrote:
Oh. So you can't have the same digit within a calc cage even if they are in different 3x3 cages?


Yes, there was some confusion about this in the past:

https://en.wikipedia.org/wiki/Killer_su ... _ambiguity

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