Bad puzzles in Haarlems Dagblad (Netherlands)

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Bad puzzles in Haarlems Dagblad (Netherlands)

Postby Shahrazad » Fri Dec 09, 2005 1:10 pm

Sudoko puzzles are printed in the 'Haarlems Dagblad' since a week now. This newspaper is the oldest paper in the Netherlands and exists since 1656.

Now, these puzzles they print are crap. I don't know where they come from or who puts them together, but I already stopped attempting them.
Not that they can't be solved, but they don't have unique solutions, which make them BAD sudoku's, and I hope you guys agree with me.

I'll show you the 2 last ones they dared to publish:

Thursday December 8
Code: Select all
3 . . | . . 1 | . 7 .
4 . . | . . 2 | . 3 .
. 1 8 | 6 3 . | 2 . 4
------+-------+------
9 . . | . . 3 | . 8 .
. 4 1 | 8 9 . | 3 . 2
6 . . | . . 4 | . 9 .
------+-------+------
1 . . | . . 5 | . 2 .
2 . . | . . 8 | . 1 .
. 3 9 | 2 1 . | 5 . 7


Friday December 9
Code: Select all
. . 7 | 6 . . | . . .
6 4 . | . 2 5 | 7 8 .
. . 9 | 4 . . | . . 5
------+-------+------
. . 2 | 1 . . | . . 3
. . 8 | 7 . . | . . 2
9 7 . | . 5 2 | 8 1 .
------+-------+------
8 3 . | . 9 4 | 1 2 .
. . 5 | 8 . . | . . 4
. . 1 | 2 . . | . . 8


Now if you agree with me, all send massive complaints to this paper:)
(www.haarlemsdagblad.nl mail them at: redactie.hd@hdc.nl )

thanks for listening:)
Greetz
Shah
Shahrazad
 
Posts: 8
Joined: 09 December 2005

Postby rubylips » Fri Dec 09, 2005 1:36 pm

Shah,

You're right. The first puzzle has 44 solutions, the second 13.
rubylips
 
Posts: 149
Joined: 01 November 2005

Postby Shahrazad » Fri Dec 09, 2005 1:42 pm

good grief ... 44 solutions ...

'bad' isn't beginning to describe this. It's abominable:D


What program are you using to count the number of solutions ?

Thanks,
Shah


EDIT: I see you,re the admin of the Su DoKu solver on SourceForge:)
I dowlnloaded the java source code, but I don't seem to be able to load this project into NetBeans. My knowledge of Java is minimal anyhow:D
Last edited by Shahrazad on Fri Dec 09, 2005 2:55 pm, edited 1 time in total.
Shahrazad
 
Posts: 8
Joined: 09 December 2005

Postby Pappocom » Fri Dec 09, 2005 5:10 pm

Shahrazad, you can let Haarlems Dagblad know they can get my Pappocom puzzles for free, if they want them. They just have to email me to find out how to go about it.

- Wayne
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Postby Bigtone53 » Fri Dec 09, 2005 5:16 pm

Sudoko puzzles are printed in the 'Haarlems Dagblad' since a week now. This newspaper is the oldest paper in the Netherlands and exists since 1656.


I flew from Schihol to Luxembourg a couple of weeks ago and picked up a freebie Dutch paper which had Sudokus. Nothing too strenuous but it passed the time. I dont remember the title (perhaps the Algemeen Dagblad) but obviously not the Haarlems Dagblad!
Bigtone53
 
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Postby Shahrazad » Fri Dec 09, 2005 6:58 pm

Pappocom wrote:Shahrazad, you can let Haarlems Dagblad know they can get my Pappocom puzzles for free, if they want them. They just have to email me to find out how to go about it.

- Wayne


Wayne,

I will point them to your site and tell them they should email you:) , but I have no idea if they are willing to change their ways. No doubt they think they're doing a swell job.

thanks,
Shah
Shahrazad
 
Posts: 8
Joined: 09 December 2005

Postby Shahrazad » Fri Dec 09, 2005 7:01 pm

Bigtone53 wrote:
Sudoko puzzles are printed in the 'Haarlems Dagblad' since a week now. This newspaper is the oldest paper in the Netherlands and exists since 1656.


I flew from Schihol to Luxembourg a couple of weeks ago and picked up a freebie Dutch paper which had Sudokus. Nothing too strenuous but it passed the time. I dont remember the title (perhaps the Algemeen Dagblad) but obviously not the Haarlems Dagblad!


The 'Haarlems Dagblad' newspaper isn't a national newspaper. It's focused on the city of Haarlem and direct surroundings. Of course the national and international news is just as good as the in the national papers.

Schiphol being only 15 Km or so from Haarlem, could very well have copies of the Haarlems Dagblad though:)

Thanks,
Shah
Shahrazad
 
Posts: 8
Joined: 09 December 2005

Postby Shahrazad » Fri Dec 09, 2005 9:19 pm

Shahrazad wrote:good grief ... 44 solutions ...

What program are you using to count the number of solutions ?



ok, change this line in gridContainer.java:
Code: Select all
old:      int nSolns = grid.solve( strategy , 2 );
new:      int nSolns = grid.solve( strategy , 100 );   // calculate a maximum of 100 solutions


and change the switch statement in controlContainer.java:
Code: Select all
   int nSolns = grid.evaluate() ;
   int tmp = (nSolns>1?100:nSolns);    // 100 is an arbitrary value

   switch( tmp ){
   case 0 :
       solns.setText("None");
       break;
   case 1 :
       solns.setText("Unique");
       break;
   case 2 :                                    //this is now obsolete
       solns.setText("Multiple");
       break;
   case 100 :
                    solns.setText("(" + nSolns + ")");   // don't know java well enough to cast an integer as a string like in c# (nSolns.toString())
                    break;
   default:
       solns.setText("Error");
       break;       
   }



This will show the number of solutions in the screen, where it now shows "multipl" (yeah the 'e' doesn't fit in the textbox)


Greetz,
Shah
Shahrazad
 
Posts: 8
Joined: 09 December 2005

Postby rubylips » Fri Dec 09, 2005 11:21 pm

Shah,

The GUI form of the solver only ever returns the first solution it finds, so you'll have to use the command-line solver:

Code: Select all
java com.act365.sudoku.Solver < Dagblad.txt

will count the solutions while

Code: Select all
java com.act365.sudoku.Solver -v < Dagblad.txt

will display the solutions and the reasoning, where Dagblad.txt is a text file that contains the two puzzles. The ASCII format you've used for the puzzles is fine but please make sure you add a blank line after the second puzzle as the parsing code isn't as good as it could be.

You might like to send me a Private Message if you have further questions as a debate about the source code isn't likely to interest many other people.
rubylips
 
Posts: 149
Joined: 01 November 2005

Postby Shahrazad » Fri Dec 09, 2005 11:56 pm

Those are options I didn't know about.
That's really cool:D

thanks:)
Shah
Shahrazad
 
Posts: 8
Joined: 09 December 2005

Postby Shahrazad » Mon Dec 12, 2005 10:12 am

The foolheartedly keep messing up their puzzles and give Sudoku a bad name:(


Monday's sudoku in my paper:


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



Getting a bit tired of this. They know they publish wrong ones (they wrote so in Saturdays issue) but they don't seem to care at all.

Greetz
Shah
Shahrazad
 
Posts: 8
Joined: 09 December 2005

Postby rubylips » Mon Dec 12, 2005 10:56 am

To be fair, the newspaper has improved a little. This puzzle has only three solutions!
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Posts: 149
Joined: 01 November 2005

Postby Shahrazad » Mon Dec 12, 2005 11:00 am

Even if it had only 2 solutions, it would still be a faulty Sudoku:)
Shahrazad
 
Posts: 8
Joined: 09 December 2005


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