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Can someone help me with this puzzle from the "Zeit&

 
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scorpio56xxl



Joined: 16 Oct 2005
Posts: 7
Location: Bonn, Germany

PostPosted: Tue Dec 06, 2005 4:50 am    Post subject: Can someone help me with this puzzle from the "Zeit& Reply with quote

Hi all,
Here is the pattern I already found:

Code:
  1/5      2/5      3      6        9        4      1/2/5        7         8
1/4/5/8  2/4/5/9    6    2/3/7   3/5/7/8   2/7/8   1/2/3/9     2/3/4    1/4/5/9
 4/5/8   2/4/5/9    7      1      3/5/8     2/8   2/3/4/5/9   2/3/4/6   4/5/6/9

   2        8       1      5        4        6        7          9         3
   9        6      4/5    2/7     1/7/8      3     1/2/4/5     2/4/8     1/4/5
   3        7      4/5    2/9      1/8     2/8/9   1/2/4/5    2/4/6/8   1/4/5/6

  4/7      3/4      9    3/4/7      6        1        8          5         2
   6        1       8    3/4/7/9    2        5      3/4/9       3/4      4/7/9
 4/5/7     3/4/5    2      8       3/7      7/9       6          1       4/7/9

I found an x-wing with nines in r6c4/r8c4 and r9c6/r6c6. But what does this help for? Someone_somewhere: I was very interested in your 5-stars-constellation method. Is it also possible to solve it like that? Tnx a lot in advance.
a really sudoku fan from Bonn Germany Confused j
Confused
Sorry I did a mistake,
in row 2 column 7 the pattern is 1/2/3/4/5/9 and I also want to send the original one:
Code:
003 694 078
006 000 000
007 100 000
081 506 790
000 003 000
070 000 000
009 001 852
010 025 000
002 800 610
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someone_somewhere



Joined: 07 Aug 2005
Posts: 275
Location: Munich

PostPosted: Tue Dec 06, 2005 1:23 pm    Post subject: Reply with quote

Hi,

This puzzle needs soemthing more than a "five star constellation" can offer:

Starting from the 2 digits: 2 & 7 in r5c4 and following "double implication chains" you can get: 7 not in r2c4.

And starting from the 2 digits: 2 & 3 in r2c4, you could get: 3 not in r2c8.

And this is probable all, which is not much at all and of course not solving the puzzle. The final position that I got was:


Code:
15    25    3   6    9      4    125    7     8

1458  2459  6   23   3578   278  123459 24    1459

458   2459  7   1    358    28   23459  2346  4569

2     8     1   5    4      6    7      9     3

9     6     45  27   178    3    1245   248   145

3     7     45  29   18     289  1245   2468  1456

47    34    9   347  6      1    8      5     2

6     1     8   479  2      5    349    34    479

457   345   2   8    37     79   6      1     479


P.S. I did not realize that "Zeit" came to such a high level puzzles.
Can you supply me the link where it is?

To finish it, you will need the help of someone else with an more advanced technique.
Sorry.

see u,
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Steve R



Joined: 24 Oct 2005
Posts: 289
Location: Birmingham, England

PostPosted: Tue Dec 06, 2005 1:37 pm    Post subject: Puzzle from the Zeit Reply with quote

Scorpio:

Have you got the original puzzle right? It has 81 solutions as it stands, so guesswork is needed at some stage.

The partials you and someone_somewhere developed occur in all 81.

Steve
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someone_somewhere



Joined: 07 Aug 2005
Posts: 275
Location: Munich

PostPosted: Tue Dec 06, 2005 1:49 pm    Post subject: Reply with quote

Hi Scorpio,

This could be a good reason why I can't find a solution. Laughing
I can't check if there is a unique solution.
The techniques I am using are leading me to the solution or not.
They are NOT leading me to ONE of the solutions, if there are several solution. This is because I am not doing "try and error".

Still I have about 5 puzzles, which I strongly suppose that they have unique solutions, but I can't solve them with the techniques I am using.

Thank you, Scorpio.

see u,
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Guest






PostPosted: Fri Dec 16, 2005 7:35 pm    Post subject: Reply with quote

what does the code mean
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someone_somewhere



Joined: 07 Aug 2005
Posts: 275
Location: Munich

PostPosted: Sat Dec 17, 2005 6:54 am    Post subject: Reply with quote

Hi Guest,

The "code" means the, so called, "Candidate Table".
For a certain puzzle position, you write for every cell what digits can fit in it.
Probable, you will need this, only for very hard and higher Sudoku's.
With a long enough training one can manage (in average) up to hard ones without making any notes of candidates.

Hope I could help you,
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Cathy
Guest





PostPosted: Sat Dec 17, 2005 2:21 pm    Post subject: Reply with quote

Guest, Code is just the tag used to prevent your post from getting formatted (so the columns stay lined up properly).
Putting [ code ] with no spaces creates that inset box with code: at the top and the [ /code ] stops it.
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zac008
Guest





PostPosted: Sun Dec 18, 2005 1:46 am    Post subject: Reply with quote

To help you out dowload: http://www.tucows.com/preview/410519
Place the numbers above the numbers. Use the process of elimation mothod. Remember nothing can be the same in each blue box and nothing can be the same vertical and horizontal.
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