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Slightly odd

 
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Victor



Joined: 29 Sep 2005
Posts: 207
Location: NI

PostPosted: Wed Jan 02, 2008 9:37 pm    Post subject: Slightly odd Reply with quote

M4848401 (85)

{Edited by Keith to correct the grid}

Code:

+-------+-------+-------+
| . 7 . | 2 . . | . 4 . |
| . . 4 | 3 . . | 2 . . |
| . . 9 | . . 4 | 8 . . |
+-------+-------+-------+
| 7 . . | . 4 . | . . 9 |
| 9 . . | 5 . 1 | . . 7 |
| . 2 . | . 9 . | . 1 . |
+-------+-------+-------+
| . . 3 | 9 . . | 7 . . |
| . . 2 | . . 7 | 1 . . |
| . 1 . | . . 3 | . 6 . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site

Despite more than half the grid being filled in after basics, this took more moves than usual (about 8 as far as I remember). Can you do better? I mean that tho' I'm sure you'll do it faster, can you do it more concisely?

(My kind of puzzle, solvable by standard techniques, & neither trivially easy nor fiendishly difficult.)
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Wed Jan 02, 2008 9:55 pm    Post subject: Reply with quote

victor, please check the validity of the puzzle, thanx

Norm
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Wed Jan 02, 2008 10:23 pm    Post subject: Reply with quote

storm_norm wrote:
victor, please check the validity of the puzzle, thanx

Norm

Victor, the 3 in box 2 should be in r2c4.

http://www.menneske.no/sudoku/eng/showpuzzle.html?number=4848401
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Wed Jan 02, 2008 10:44 pm    Post subject: Reply with quote

Code:
+-------+-------+-------+
| . 7 . | 2 . . | . 4 . |
| . . 4 | 3 . . | 2 . . |
| . . 9 | . . 4 | 8 . . |
+-------+-------+-------+
| 7 . . | . 4 . | . . 9 |
| 9 . . | 5 . 1 | . . 7 |
| . 2 . | . 9 . | . 1 . |
+-------+-------+-------+
| . . 3 | 9 . . | 7 . . |
| . . 2 | . . 7 | 1 . . |
| . 1 . | . . 3 | . 6 . |
+-------+-------+-------+
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Wed Jan 02, 2008 11:51 pm    Post subject: Reply with quote

The "correct" puzzle is, I think, very tough. The originally posted puzzle is invalid (it has no solution).

So, should I delete the thread? Or, should I edit it to put the correct puzzle up front?

Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Thu Jan 03, 2008 12:26 am    Post subject: Reply with quote

I linked to the original puzzle and Norm posted the corrected version. It took awhile, but ERs were the key. I played three or four of them, then after eliminating what I could, went back and played a few more for a total of seven. Then a W-Wing with pincer coloring finished it off.

A fun puzzle.
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Victor



Joined: 29 Sep 2005
Posts: 207
Location: NI

PostPosted: Fri Jan 04, 2008 8:05 pm    Post subject: Reply with quote

Really sorry about the typo - pure carelessness in manual transcription. I work only on paper, and so have never bothered to find a way of reading from the screen of a program that doesn't have an export facility. SO, a small technical question: is there a program smart enough to translate (say) a Menneske screen into a digit string?
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Fri Jan 04, 2008 11:24 pm    Post subject: Reply with quote

On the Menneske page (or their print page) you can highlight and copy the digits of the puzzle.

I then paste them into Sudoku Susser, which handles them fine, except if the first line is blank.

You can also paste them into Notepad, but there are some special characters (tabs?) that you cannot see and which mess up the formatting.

I am now using Open Office. I have yet to figure out how to find/replace special characters like I used to do with Word.

Best wishes,

Keith
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ravel



Joined: 21 Apr 2006
Posts: 536

PostPosted: Sat Jan 05, 2008 1:02 pm    Post subject: Reply with quote

Under linux i use my own program, that can read and format puzzles and grids in various formats. But at least an older version of Sudoku Susser also had worked.
Under windows i use Angus' SimpleSudoku. You can paste and copy both puzzles and grids.
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Victor



Joined: 29 Sep 2005
Posts: 207
Location: NI

PostPosted: Mon Jan 07, 2008 12:02 am    Post subject: Reply with quote

Thanks guys. No success yet! When I copy & paste into Word, it just says that all non-numerical characters are bog-standard spaces: since that includes both empty cells & separators, it would be a nightmare to format. Tried in Simple Sudoku, but it can't make sense of it either. I tried to download Sudoku Susser but made some mistake with unzipping the file - I'll try again later. Anyway, thanks again.

(Keith, I was slightly puzzled when you remarked that this was very tough. I did find it fairly difficult but, having noticed in the past that some people can solve in half an hour a puzzle that takes me half a day, I assumed it was OK. I tried it again, and noticed that the key to my success lay in doing a UR elimination early on. That was the subject of a thread a few weeks ago, and indeed seems quite common.)
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