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Preferred clue patterns
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Ruud
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Joined: 17 Sep 2005
Posts: 708
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Location: Netherlands

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PostPosted: Mon Aug 27, 2007 6:10 pm    Post subject: Reply with quote

It requires no guesses. It can be solved with singles, X-Wing and this BUG-Lite move:

Code:
.---------------.---------------.---------------.
| 2    6    3   | 5    7    9   | 1    4    8   |
| 59   7    4   | 8    2    1   | 6    59   3   |
| 89   1    589 | 3    4    6   | 59   7    2   |
:---------------+---------------+---------------:
| 4   *89   7   | 1   *89   5   | 3    2    6   |
| 89-5 3    6   | 2   *89   7   | 4   *89+5 1   |
| 1   *89+5 2   | 4    6    3   | 7   *89   59  |
:---------------+---------------+---------------:
| 7    4    59  | 6    1    8   | 2    3    59  |
| 3    2    1   | 9    5    4   | 8    6    7   |
| 6    589  589 | 7    3    2   | 59   1    4   |
'---------------'---------------'---------------'


You can minimize the puzzle to 26 clues with the same solving path, except a few more singles.

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


Ruud
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