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| crosspollinator
| Joined: 24 Jun 2006 | Posts: 4 | : | | Items |
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Posted: Sat Jul 29, 2006 10:13 pm Post subject: My first Samurai Sudoku puzzle |
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I've just generated my first Samurai Sudoku puzzle:
Code: | 3 . . . 5 . . . 9 3 . . . 8 . . . 6
. 6 . . 9 . . 4 . . 9 . . 4 . . 2 .
. . 5 . 7 . 1 . . . . 7 . 9 . 8 . .
. . . 9 . 5 . . . . . . 7 . 8 . . .
5 4 9 . . . 6 8 7 2 8 6 . . . 7 4 3
. . . 4 . 7 . . . . . . 2 . 4 . . .
. . 6 . 4 . 8 . . . 2 . . . 9 . 7 . 3 . .
. 1 . . 2 . . . . . 9 . . . . . 1 . . 5 .
7 . . . 1 . . . 3 . 8 . 1 . . . 2 . . . 9
. . . 7 . 9 . . .
9 1 7 . . . 5 4 2
. . . 5 . 2 . . .
9 . . . 6 . . . 4 . 5 . 2 . . . 9 . . . 3
. 3 . . 7 . . . . . 7 . . . . . 7 . . 6 .
. . 8 . 5 . 3 . . . 6 . . . 8 . 1 . 9 . .
. . . 3 . 5 . . . . . . 4 . 1 . . .
5 4 9 . . . 6 3 1 3 2 5 . . . 6 4 1
. . . 9 . 6 . . . . . . 2 . 3 . . .
. . 1 . 9 . 8 . . . . 9 . 3 . 5 . .
. 9 . . 3 . . 4 . . 7 . . 4 . . 9 .
6 . . . 2 . . . 7 1 . . . 2 . . . 8
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| m_b_metcalf
| Joined: 13 Mar 2006 | Posts: 210 | : | Location: Berlin | Items |
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Posted: Tue Oct 17, 2006 6:33 pm Post subject: Re: My first Samurai Sudoku puzzle |
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crosspollinator wrote: | I've just generated my first Samurai Sudoku puzzle:
[snip]
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I've only just seen your puzzle, now that I've got around to writing a Samurai solver. It's a very nice one: beautiful pattern and quite hard. If we define Samurai's to fall into one of two classes:
Simple: can be solved simply by exchanging solved cells, iteratively;
Compound: requires, additionally, the exchange of details of the candidates in each cell, iteratively;
then yours is compound (the program checks for this). That you certainly knew already, but some aren't.
Maybe you'd like to look at the X-Samurai below (the 10 diagonals, all initially absent, each contain the digits 1 to 9).
Regards,
Mike Metcalf
Code: |
. . 1 . . . 7 . . . . 8 . . . 5 . .
. . . . 9 . . . . . . . . 9 . . . .
2 . . 1 8 7 . . 5 7 . . 2 4 8 . . 1
4 6 . . . . . 9 8 6 7 . . . . . 8 9
. . . . . . . . . . . . . . . . . .
5 2 . . . . . 3 6 3 2 . . . . . 7 5
3 . . 2 1 6 . . . . . . . . . 3 5 4 . . 7
. . . . 4 . . . . . 4 . . . . . 2 . . . .
. . 8 . . . . . . 8 7 9 . . . . . . 6 . .
5 2 . . . . . 6 9
. . . . . . . . .
9 3 . . . . . 8 5
. . 8 . . . . . . 5 8 7 . . . . . . 5 . .
. . . . 6 . . . . . 1 . . . . . 6 . . . .
4 . . 2 1 9 . . . . . . . . . 2 4 8 . . 9
1 8 . . . . . 7 9 7 6 . . . . . 9 8
. . . . . . . . . . . . . . . . . .
3 6 . . . . . 2 4 4 3 . . . . . 2 5
2 . . 1 4 5 . . 7 3 . . 9 5 7 . . 4
. . . . 2 . . . . . . . . 2 . . . .
. . 4 . . . 9 . . . . 4 . . . 3 . .
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Last edited by m_b_metcalf on Wed Jan 17, 2007 3:44 pm; edited 1 time in total |
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| Archangel
| Joined: 31 Dec 2006 | Posts: 2 | : | Location: Milan, Italy | Items |
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Posted: Sun Dec 31, 2006 2:39 pm Post subject: Re: My first Samurai Sudoku puzzle |
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crosspollinator wrote: | I've just generated my first Samurai Sudoku puzzle:
3 . . . 5 . . . 9
. 6 . . 9 . . 4 .
. . 5 . 7 . 1 . .
. . . 9 . 5 . . .
5 4 9 . . . 6 8 7
. . . 4 . 7 . . .
. . 6 . 4 . 8 . .
. 1 . . 2 . . . .
7 . . . 1 . . . 3
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I do not know the meaning of 'Samurai Sudoku' but the above one, although esthetically nice, is not of the type I know.
It has (many) more than one possible solution ! |
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| m_b_metcalf
| Joined: 13 Mar 2006 | Posts: 210 | : | Location: Berlin | Items |
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Posted: Tue Jan 02, 2007 1:34 pm Post subject: Re: My first Samurai Sudoku puzzle |
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Archangel wrote: | I do not know the meaning of 'Samurai Sudoku' but the above one, although esthetically nice, is not of the type I know.
It has (many) more than one possible solution ! |
Your not knowing the meaning of Samurai Sudoku is evident: it is 5 interlinked sudokus that cannot be solved independently, and, of course, have each only one solution. You quoted only one of the 5, not the whole puzzle.
HTH
Mike Metcalf |
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