Patterns Game 1.0

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Postby JPF » Sat May 05, 2007 12:31 pm

Here's a €8.3 clue :

Code: Select all
 . . 1 2 3 . 4 . .
 . . . . . . . 5 .
 . 6 . . . . . 7 .
 7 . 8 6 . . . . .
 . 5 . . . . . . .
 9 . 2 4 . . . . .
 . 7 . . . . . 3 .
 . . . . . . . 6 .
 . . 9 3 1 . 2 . .     SE=8.3


JPF
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Postby JPF » Thu May 17, 2007 9:29 pm

The new challenge :

Code: Select all
 . . 1 | . . 2 | . . 3
 . 2 . | . 1 . | . 4 .
 . . . | 5 . . | 6 . .
-------+-------+-------
 . . . | . . . | . . 1
 5 . . | . . . | . 7 .
 . 6 . | . . . | 8 . .
-------+-------+-------
 . . 7 | . . . | . . 4
 . 1 . | 8 . . | . 2 .
 8 . . | . 6 . | . . .    SE=1.5


JPF
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Postby Mauricio » Thu May 17, 2007 10:46 pm

JPF wrote:The new challenge :


First challenger
Code: Select all
. . 1|. . 2|. . 3
. 4 .|. 5 .|. 6 .
. . .|7 . .|5 . .
-----+-----+-----
. . .|. . .|. . 2
5 . .|. . .|. 4 .
. 8 .|. . .|1 . .
-----+-----+-----
. . 7|. . .|. . 9
. 6 .|5 . .|. 7 .
2 . .|. 6 .|. . .   ER 6.6


According to my rating system, this one should be easier than 6.6, I think my rater has a bug ...

I found the bug, sort of. I disabled the lines that rated the sudokus (and forgot to enable them again), my program was not rating them at all.
Last edited by Mauricio on Sat May 26, 2007 9:01 pm, edited 1 time in total.
Mauricio
 
Posts: 1174
Joined: 22 March 2006

Postby JPF » Thu May 17, 2007 11:09 pm

riposte :

Code: Select all
 . . 1 | . . 2 | . . 3
 . 3 . | . 4 . | . 5 .
 . . . | 6 . . | 4 . .
-------+-------+-------
 . . . | . . . | . . 2
 4 . . | . . . | . 7 .
 . 8 . | . . . | 1 . .
-------+-------+-------
 . . 6 | . . . | . . 5
 . 7 . | 4 . . | . 8 .
 2 . . | . 9 . | . . .  SE=8.3


JPF
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Postby Mauricio » Fri May 18, 2007 4:12 am

Next:
Code: Select all
. . 1|. . 2|. . 3
. 3 .|. 4 .|. 5 .
. . .|6 . .|7 . .
-----+-----+-----
. . .|. . .|. . 1
6 . .|. . .|. 4 .
. 8 .|. . .|2 . .
-----+-----+-----
. . 7|. . .|. . 2
. 5 .|9 . .|. 8 .
2 . .|. 5 .|. . .  ER 8.4
Mauricio
 
Posts: 1174
Joined: 22 March 2006

Postby JPF » Fri May 18, 2007 8:16 am

Nice moves Mauricio !

Next :
Code: Select all
 . . 1 | . . 2 | . . 3
 . 4 . | . 1 . | . 5 .
 . . . | 6 . . | 7 . .
-------+-------+-------
 . . . | . . . | . . 6
 5 . . | . . . | . 1 .
 . 8 . | . . . | 9 . .
-------+-------+-------
 . . 7 | . . . | . . 2
 . 5 . | 4 . . | . 8 .
 3 . . | . 8 . | . . .   SE=8.9


JPF
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Postby Mauricio » Fri May 18, 2007 10:05 pm

This one took a while to find
Code: Select all
. . 1|. . 2|. . 3
. 4 .|. 5 .|. 6 .
. . .|1 . .|7 . .
-----+-----+-----
. . .|. . .|. . 1
3 . .|. . .|. 5 .
. 7 .|. . .|8 . .
-----+-----+-----
. . 8|. . .|. . 2
. 6 .|7 . .|. 4 .
2 . .|. 3 .|. . .  ER 9.0


I guess it is not against the rules to post two sudokus that have the same rating
Code: Select all
. . 1|. . 2|. . 3
. 4 .|. 5 .|. 6 .
. . .|4 . .|7 . .
-----+-----+-----
. . .|. . .|. . 8
5 . .|. . .|. 4 .
. 9 .|. . .|1 . .
-----+-----+-----
. . 3|. . .|. . 2
. 7 .|9 . .|. 5 .
6 . .|. 8 .|. . .   ER 9.0
Mauricio
 
Posts: 1174
Joined: 22 March 2006

Postby Mauricio » Sat May 19, 2007 2:54 am

This is a little off topic. Take the next sudoku:
Code: Select all
. . 1|. . 2|. . 3
. 4 .|. 5 .|. 6 .
. . .|7 . .|8 . .
-----+-----+-----
. . .|. . .|. . 1
8 . .|. . .|. 5 .
. 7 .|. . .|2 . .
-----+-----+-----
. . 3|. . .|. . 5
. 6 .|8 . .|. 7 .
2 . .|. 1 .|. . .


If you modify 1, 2 or 3 filled cells of it and get a valid sudoku, then the new sudoku obtained is isomorphic to the starting one.

Has anyone generated a sudoku with this property?

Edit: The next has the same property, and moreover, I think it is a untouchable level 2:
Code: Select all
. . 1|. . 2|. . 3
. 4 .|. 5 .|. 6 .
. . .|7 . .|8 . .
-----+-----+-----
. . .|. . .|. . 9
8 . .|. . .|. 5 .
. 7 .|. . .|2 . .
-----+-----+-----
. . 9|. . .|. . 4
. 6 .|4 . .|. 7 .
2 . .|. 1 .|. . .
Mauricio
 
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Postby JPF » Sun May 20, 2007 12:02 am

Mauricio wrote:This is a little off topic. Take the next sudoku:
Code: Select all
. . 1|. . 2|. . 3
. 4 .|. 5 .|. 6 .
. . .|7 . .|8 . .
-----+-----+-----
. . .|. . .|. . 1
8 . .|. . .|. 5 .
. 7 .|. . .|2 . .
-----+-----+-----
. . 3|. . .|. . 5
. 6 .|8 . .|. 7 .
2 . .|. 1 .|. . .


If you modify 1, 2 or 3 filled cells of it and get a valid sudoku, then the new sudoku obtained is isomorphic to the starting one.

Has anyone generated a sudoku with this property?

One digit [9] is missing in the puzzle.
Therefore, if a digit say x has n occurences in the puzzle, there are at least n isomorphic puzzles ([x]->[9]) to the initial one when n clues are changed.

for n=1 :[4]
for n=2 :[3] [6]
for n=3 :[1] [2] [5] [7] [8]

and in this particular case, there are no other mutable clues for n<=3.

JPF
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Postby JPF » Wed May 23, 2007 5:41 pm

Mauricio wrote:If you modify 1, 2 or 3 filled cells of it and get a valid sudoku, then the new sudoku obtained is isomorphic to the starting one.

Has anyone generated a sudoku with this property?

Here 's one :
Code: Select all
 . . 1 | 2 . 3 | 4 . .
 . . . | . . . | . . .
 5 . . | . . . | . . 6
-------+-------+-------
 4 . . | . . . | . . 7
 . . 7 | 1 . 2 | 8 . .
 6 . . | . . . | . . 5
-------+-------+-------
 3 . . | . . . | . . 4
 . . . | . . . | . . .
 . . 2 | 4 . 7 | 1 . .

isolated puzzle among puzzles with this pattern (D>=4).

PS : I'm still trying to beat your ER=9.0, but unsuccessfully:(

JPF
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Postby Mauricio » Sun May 27, 2007 1:00 am

A week has passed since I posted my sudoku, I suppose I won.

New challenge!
Code: Select all
1 . .|. 2 .|. . 3
. . .|4 . .|. 5 .
. . 6|. . .|1 . .
-----+-----+-----
. 4 .|. . 7|. . .
7 . .|. . .|. . 6
. . .|6 . .|. 2 .
-----+-----+-----
. . 2|. . .|4 . .
. 5 .|. . 1|. . .
8 . .|. 3 .|. . .   ER 1.5
Mauricio
 
Posts: 1174
Joined: 22 March 2006

Postby JPF » Sun May 27, 2007 10:15 am

Mauricio wrote:A week has passed since I posted my sudoku, I suppose I won.
Yes, congratulations !

Mauricio wrote:New challenge!
hmm, 19 clues ; not an easy one.

Here's a first proposal, not an all singles :

Code: Select all
 1 . . | . 2 . | . . 3
 . . . | 4 . . | . 5 .
 . . 6 | . . . | 1 . .
-------+-------+-------
 . 1 . | . . 7 | . . .
 3 . . | . . . | . . 6
 . . . | 6 . . | . 2 .
-------+-------+-------
 . . 2 | . . . | 7 . .
 . 5 . | . . 1 | . . .
 8 . . | . 3 . | . . .   ER 2.0


JPF
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Postby Mauricio » Sun May 27, 2007 1:58 pm

As I posed the puzzle, I have an advantage, this puzzle is easy to defeat.

Code: Select all
1 . .|. 2 .|. . 3
. . .|4 . .|. 5 .
. . 6|. . .|1 . .
-----+-----+-----
. 7 .|. . 1|. . .
2 . .|. . .|. . 7
. . .|6 . .|. 4 .
-----+-----+-----
. . 4|. . .|6 . .
. 5 .|. . 8|. . .
9 . .|. 7 .|. . .   ER 2.6
Mauricio
 
Posts: 1174
Joined: 22 March 2006

Postby JPF » Mon May 28, 2007 7:00 am

Next :

Code: Select all
 1 . . | . 2 . | . . 3
 . . . | 4 . . | . 5 .
 . . 6 | . . . | 7 . .
-------+-------+-------
 . 8 . | . . 6 | . . .
 2 . . | . . . | . . 1
 . . . | 7 . . | . 3 .
-------+-------+-------
 . . 7 | . . . | 4 . .
 . 3 . | . . 2 | . . .
 4 . . | . 1 . | . . .    ER 6.7


JPF
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Posts: 3752
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Postby Mauricio » Tue May 29, 2007 6:21 am

So it is just a game between JPF and me?


Code: Select all
1 . .|. 2 .|. . 3
. . .|4 . .|. 5 .
. . 6|. . .|7 . .
-----+-----+-----
. 4 .|. . 7|. . .
5 . .|. . .|. . 6
. . .|6 . .|. 2 .
-----+-----+-----
. . 2|. . .|4 . .
. 8 .|. . 5|. . .
9 . .|. 8 .|. . .     ER 7.1
Mauricio
 
Posts: 1174
Joined: 22 March 2006

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