X-treme Nov 27 - ideas?

Welcome to the world of the unknown. Each day you need to solve <a href="http://www.sudocue.net/xfile.php">two mysteries</a>.<br>Take the X-R-Size or solve the X-Treme problem. Stuck? Found a nice solution? Tell us about it.
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sudokuEd
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Posts: 257
Joined: Mon Jun 19, 2006 11:06 am
Location: Sydney Australia

X-treme Nov 27 - ideas?

Post by sudokuEd »

Been staring blankly at this spot for ages - can't find anything. Any ideas? Surely that infestation has been exterminated by now?

Code: Select all

.------------------.------------------.------------------.
| 167   346   13467| 4679  8     2    | 5     134   69   |
| 5     8     13467| 4679  3469  34679| 2     134   1469 |
| 2     9     346  | 5     346   1    | 7     8     46   |
&#58;------------------+------------------+------------------&#58;
| 169   2     1689 | 4679  14679 4689 | 1468  5     3    |
| 3     7     168  | 146   5     468  | 146   9     2    |
| 4     5     1689 | 136   2     369  | 168   7     18   |
&#58;------------------+------------------+------------------&#58;
| 79    1     2    | 8     349   3479 | 39    6     5    |
| 6789  346   5    | 13679 169   3679 | 1389  2     1478 |
| 689   346   34679| 2     1679  5    | 1389  14    147  |
'------------------'------------------'------------------'
Ruud
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Posts: 601
Joined: Fri Dec 30, 2005 10:21 pm

Post by Ruud »

There is a very simple [[coloring]] move to eliminate 3 from r8c2:

Code: Select all

.------------------.------------------.------------------. 
| 167   346   13467| 4679  8     2    | 5     134   69   | 
| 5     8     13467| 4679  3469  34679| 2     134   1469 | 
| 2     9     346  | 5     346   1    | 7     8     46   | 
&#58;------------------+------------------+------------------&#58; 
| 169   2     1689 | 4679  14679 4689 | 1468  5     3    | 
| 3     7     168  | 146   5     468  | 146   9     2    | 
| 4     5     1689 |A136   2     369  | 168   7     18   | 
&#58;------------------+------------------+------------------&#58; 
| 79    1     2    | 8     349   3479 | 39    6     5    | 
| 6789 -346   5    |B13679 169   3679 | 1389  2     1478 | 
| 689   346   34679| 2     1679  5    | 1389  14    147  | 
'------------------'------------------'------------------'
The subsequent [[Locked_Candidates]] move will open things up a little.

Ruud
sudokuEd
Grandmaster
Grandmaster
Posts: 257
Joined: Mon Jun 19, 2006 11:06 am
Location: Sydney Australia

Post by sudokuEd »

Ruud wrote:There is a very simple [[coloring]] move to eliminate 3 from r8c2:
It was simple - tricked by those diagonals again. :D

The rest flowed out very nicely, with one more hold-up at the end. Thanks.

I like how you put the links to the relevant bit in Supopedia too. Very helpful.
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