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.
sudokuEd
Grandmaster
Posts: 257 Joined: Mon Jun 19, 2006 11:06 am
Location: Sydney Australia
Post
by sudokuEd » Mon Nov 27, 2006 11:41 am
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 |
:------------------+------------------+------------------:
| 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 |
:------------------+------------------+------------------:
| 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
Site Owner
Posts: 601 Joined: Fri Dec 30, 2005 10:21 pm
Post
by Ruud » Mon Nov 27, 2006 1:51 pm
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 |
:------------------+------------------+------------------:
| 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 |
:------------------+------------------+------------------:
| 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
Posts: 257 Joined: Mon Jun 19, 2006 11:06 am
Location: Sydney Australia
Post
by sudokuEd » Tue Nov 28, 2006 6:15 am
Ruud wrote: There is a very simple [[coloring]] move to eliminate 3 from r8c2:
It was simple - tricked by those diagonals again.
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.