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Is this a Nice loop

 
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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)
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Pat



Joined: 23 Feb 2010
Posts: 162

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
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ronk



Joined: 07 May 2006
Posts: 397

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.
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