| View previous topic :: View next topic |
| Author |
Message |
keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
|
 Posted: Fri May 12, 2006 10:53 pm Post subject: A Unique UR? |
 |
|
I posted a message in the Solver's Forum, but I think I will probably get more insight from the manual solvers in this forum. So, here goes:
Solve the following puzzle using Unique Rectangles when you find them:
| Code: |
. . .|. . 1|. . 8
. 8 2|. . .|. . .
. . .|9 3 .|. . .
-----------------
. . .|8 9 7|. . .
. . .|1 . .|. 3 .
. . 5|. . .|2 . .
-----------------
3 . .|6 . .|. 1 .
9 . .|2 . .|. . 4
6 . 7|3 . .|. . .
|
And, then please run it through your software. My contention is that this has a fairly simple UR reduction that most people (especially Keith) and software will not recognize.
If you want more background, look at:
http://www.sudoku.com/forums/viewtopic.php?t=4088
Best wishes,
Keith |
|
| Back to top |
|
 |
Steve R
Joined: 24 Oct 2005
Posts: 289
Location: Birmingham, England
|
| Posted: Sat May 13, 2006 12:39 am Post subject: Unique UR? |
|
|
Keith
The idea is certainly new to me. Congratulations!
I expect you have noticed that a corresponding, though not identical, elimination can be made in the diagonal case. I reckon 2UR/NSL/BV/d.
Steve |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
