Please Help: Very Hard,0.77,from "OpenSky Sudoku Genera

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Please Help: Very Hard,0.77,from "OpenSky Sudoku Genera

Postby 13Qiao » Fri Nov 09, 2007 4:37 am

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


I've got to here:
Code: Select all
. . 6|9 . 2|8 7 .
. 5 9|7 . 6|. 4 3
. 7 .|4 . .|9 . 6
-----+-----+-----
. 6 7|3 2 8|5 . 4
. . 5|1 6 7|. . 8
3 . .|5 4 9|6 . 7
-----+-----+-----
7 . 2|6 . 1|4 8 .
5 . .|2 7 4|. 6 .
6 1 4|8 9 .|7 . 2

or
Code: Select all
14  34  6  |9  35  2  |8   7    15
28  5   9  |7  18  6  |12  4    3
28  7   13 |4  18  35 |9   25   6
-----------+----------+------------
19  6   7  |3  2   8  |5   19   4
49  24  5  |1  6   7  |23  239  8
3   28  18 |5  4   9  |6   12   7
-----------+----------+------------
7   39  2  |6  35  1  |4   8    59
5   89  38 |2  7   4  |13  6    19
6   1   4  |8  9   35 |7   35   2


What is next?

Thanks,
13Qiao
 
Posts: 1
Joined: 08 November 2007

Postby RW » Fri Nov 09, 2007 5:50 am

The easiest way out would be this. If you don't like uniqueness techniques, then I suggest you look for these.

RW
RW
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Joined: 16 March 2006

Postby re'born » Fri Nov 09, 2007 11:21 am

Or one of these.
re'born
 
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Joined: 31 May 2007


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