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Topic: hard sudoku, "Platinum Blonde"
Replies: 16   Last Post: May 13, 2013 10:09 AM

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David Bernier

Posts: 3,190
Registered: 12/13/04
Re: hard sudoku, "Platinum Blonde"
Posted: May 10, 2013 3:58 PM
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On 05/10/2013 02:01 PM, Robin Chapman wrote:
> On 10/05/2013 16:42, David Bernier wrote:
>> Rating Program: gsf's sudoku q1
>> Rating: 99486
>> Poster: coloin
>> Label: HardestSudokusThread-00078;Platinum_Blonde
>> [ from sudoku programmers pages ]
>>
>>
>> . . . | . . . | . 1 2
>> . . . | . . . | . . 3
>> . . 2 | 3 . . | 4 . .
>> -------+-------+------
>> . . 1 | 8 . . | . . 5
>> . 6 . | . 7 . | 8 . .
>> . . . | . . 9 | . . .
>> -------+-------+------
>> . . 8 | 5 . . | . . .
>> 9 . . | . 4 . | 5 . .
>> 4 7 . | . . 6 | . . .

>
>
> 839|465|712
> 146|782|953
> 752|391|486
> -----------
> 391|824|675
> 564|173|829
> 287|659|341
> -----------
> 628|537|194
> 913|248|567
> 475|916|238
>
> About 7 seconds and 7000 stack pushes on my sudoku
> solver (uses a depth-first search). This is a lot
> more than some other vaunted "hard" sudokus.


That's interesting!

From "Champagne" at:
http://code.google.com/p/skfr-sudoku-fast-rating/downloads/list
potenitalhardest13_02.zip
release date: March 22.

98. 7.. ...
7.. ... 6..
..6 .5. ...

.4. ..5 .3.
..7 9.. 5..
... .2. ..1

..8 5.. 9..
... .1. ..4
... ..3 .2.

single line of 81 characters:
98.7.....7.....6....6.5.....4...5.3...79..5......2...1..85..9......1...4.....3.2.

+ ";11.90;11.90;11.80;GP;champagne dry;1;22;"


[rating: 11.90;11.90;11.80;GP;champagne ]



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