dailysudoku.com Forum Index dailysudoku.com
Discussion of Daily Sudoku puzzles
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Is this a Nice loop

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Solving techniques, and terminology
View previous topic :: View next topic  
Author Message
djray



Joined: 08 Nov 2013
Posts: 4
Location: Middleport,Pa
PostPosted: Thu Nov 28, 2013 2:41 pm    Post subject: Is this a Nice loop Reply with quote
Is this a valid nice loop? If it is not valid please explain why. I am new at this I will greatly appreciate any assistance.

This is the current puzzle


. 6 1 | 4 . 5 | 7 3 .

5 3 . | . 1 7 | . . .

2 4 7 | . . 8 | 1 . 5

------+-------+------

4 1 . | . . . | 2 . .

. . . | 1 5 4 | . . 3

. . 3 | . . . | . . 1

------+-------+------

3 . . | 9 4 1 | . . 7

. . . | 5 7 2 | 3 1 4

1 7 4 | 8 6 3 | 5 2 9

Code:

+-------+-------+-------+
| . 6 1 | 4 . 5 | 7 3 . |
| 5 3 . | . 1 7 | . . . |
| 2 4 7 | . . 8 | 1 . 5 |
+-------+-------+-------+
| 4 1 . | . . . | 2 . . |
| . . . | 1 5 4 | . . 3 |
| . . 3 | . . . | . . 1 |
+-------+-------+-------+
| 3 . . | 9 4 1 | . . 7 |
| . . . | 5 7 2 | 3 1 4 |
| 1 7 4 | 8 6 3 | 5 2 9 |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site


[r6c8] -8- [r6c5] [r6c5] -2- [r6c4] [r6c4] -7- [r4c4] [r4c4 -3- [r3c4] [r3c4 -6-] [r3c8] [r3c8] -9- [r6c8]


If yes can I delete 9s at r2c8,r4c8,r5c8

Best regards,
Ray Baucum

(Edited by Marty to add grid)
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Pat



Joined: 23 Feb 2010
Posts: 207
PostPosted: Sun Dec 01, 2013 12:49 pm    Post subject: Reply with quote
djray wrote:
Code:
+---------------+----------+-----------------+
| 89   6   1    | 4  29 5  | 7    3      28  |
| 5    3   89   | 26 1  7  | 4689 4689   268 |
| 2    4   7    | 36 39 8  | 1    69     5   |
+---------------+----------+-----------------+
| 4    1   5689 | 37 38 69 | 2    56789  68  |
| 6789 289 2689 | 1  5  4  | 689  6789   3   |
| 6789 589 3    | 27 28 69 | 4689 456789 1   |
+---------------+----------+-----------------+
| 3    25  25   | 9  4  1  | 68   68     7   |
| 689  89  689  | 5  7  2  | 3    1      4   |
| 1    7   4    | 8  6  3  | 5    2      9   |
+---------------+----------+-----------------+
Is this a valid nice loop?
    [r6c8] -8- [r6c5] -2- [r6c4] -7- [r4c4] -3- [r3c4] -6- [r3c8] -9- [r6c8]
If yes can I delete 9s at r2c8,r4c8,r5c8

If it is not valid please explain why.

I am new at this,
I will greatly appreciate any assistance.

nice loop? not very likely,
what makes you think it is?
sorry i can't explain
Back to top
View user's profile Send private message
ronk



Joined: 07 May 2006
Posts: 398
PostPosted: Tue Dec 03, 2013 5:29 pm    Post subject: Reply with quote
djray wrote:
Is this a valid nice loop?
[r6c8] -8- [r6c5] -2- [r6c4] -7- [r4c4] -3- [r3c4] -6- [r3c8] -9- [r6c8]

The syntax of the loop is correct but no exclusions result. If r6c8 is an 8, it cannot be 9; if 9 it cannot be an 8. This is what your loop says and no exclusion can be made from this logic.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Solving techniques, and terminology All times are GMT
Page 1 of 1

 
Jump to:  
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