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December 17 VH

 
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Marty R.



Joined: 12 Feb 2006
Posts: 5124
Location: Rochester, NY, USA

PostPosted: Mon Dec 17, 2012 2:41 am    Post subject: December 17 VH Reply with quote

Code:

+---------------+-----------------+--------------+
| 1    5   469  | 3   49    7     | 26  29  8    |
| 49   3   4689 | 248 24589 24589 | 1   7   4569 |
| 2    7   489  | 1   6     4589  | 59  359 3459 |
+---------------+-----------------+--------------+
| 4569 249 7    | 248 248   3     | 26  1   569  |
| 35   24  1    | 9   24    6     | 7   8   35   |
| 369  8   23   | 5   7     1     | 4   239 369  |
+---------------+-----------------+--------------+
| 7    1   49   | 6   3     4589  | 589 59  2    |
| 39   6   5    | 28  1     289   | 389 4   7    |
| 8    249 23   | 7   459   459   | 359 6   1    |
+---------------+-----------------+--------------+

Play this puzzle online at the Daily Sudoku site

Limiting myself to just standard VH moves, I couldn't find a one-stepper.

Quote:
X-Wing (4), c14
XYZ-Wing (689), pivot r2c3


Last edited by Marty R. on Tue Dec 18, 2012 5:06 pm; edited 1 time in total
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hughwill



Joined: 05 Apr 2010
Posts: 167
Location: Birmingham UK

PostPosted: Mon Dec 17, 2012 10:28 am    Post subject: December 17 VH Reply with quote

After X wing and further basics:
Code:

+--------------+---------------+------------+
| 1    5   469 | 3   49   7    | 26  29 8   |
| 49   3   689 | 248 2589 2589 | 1   7  69  |
| 2    7   89  | 1   6    89   | 5   3  4   |
+--------------+---------------+------------+
| 4569 29  7   | 248 28   3    | 26  1  569 |
| 35   24  1   | 9   24   6    | 7   8  35  |
| 369  8   23  | 5   7    1    | 4   29 369 |
+--------------+---------------+------------+
| 7    1   49  | 6   3    489  | 89  5  2   |
| 39   6   5   | 28  1    289  | 389 4  7   |
| 8    249 23  | 7   459  459  | 39  6  1   |
+--------------+---------------+------------+

Play this puzzle online at the Daily Sudoku site


This one stumped me for traditional solutions. All I could see is
a W wing on 49s r1c3<>4 ...... Did I go wrong somewhere- have I missed something ?
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Marty R.



Joined: 12 Feb 2006
Posts: 5124
Location: Rochester, NY, USA

PostPosted: Mon Dec 17, 2012 1:02 pm    Post subject: Reply with quote

Quote:
have I missed something ?


Did you see my comments? Just highlight the text in the quote box. Smile
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arkietech



Joined: 31 Jul 2008
Posts: 1709
Location: Northwest Arkansas USA

PostPosted: Tue Dec 18, 2012 1:41 pm    Post subject: Reply with quote

Code:
 *--------------------------------------------------------------------*
 | 1      5      469    | 3      49     7      | 26     29     8      |
 | 49     3      4689   | 248    24589  24589  | 1      7      469    |
 | 2      7      489    | 1      6      489    | 59     359    349    |
 |----------------------+----------------------+----------------------|
 | 4569   249    7      | 248    248    3      | 26     1      569    |
 | 35     24     1      | 9      24     6      | 7      8      35     |
 | 369    8      23     | 5      7      1      | 4      239    369    |
 |----------------------+----------------------+----------------------|
 | 7      1      49     | 6      3      4589   | 589    59     2      |
 | 39     6      5      | 28     1      289    | 389    4      7      |
 | 8      249    23     | 7      459    459    | 359    6      1      |
 *--------------------------------------------------------------------*
 xy-chain
(2=4)r5c5-(4=9)r1c5-(9=2)r1c8-(2=6)r1c7=(6=2)r4c7 => -2r4c45; stte
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the_lock_man



Joined: 18 Dec 2012
Posts: 10
Location: Portsmarfff, UK

PostPosted: Tue Dec 18, 2012 2:11 pm    Post subject: Re: December 17 VH Reply with quote

Marty R. wrote:
Code:

+---------------+-----------------+--------------+
| 1    5   469  | 3   49    7     | 26  29  8    |
| 49   3   4689 | 248 24589 24589 | 1   7   4569 |
| 2    7   489  | 1   6     4589  | 59  359 3459 |
+---------------+-----------------+--------------+
| 4569 249 7    | 248 248   3     | 26  1   569  |
| 35   24  1    | 9   24    6     | 7   8   35   |
| 369  8   23   | 5   7     1     | 4   239 369  |
+---------------+-----------------+--------------+
| 7    1   49   | 6   3     4589  | 589 59  2    |
| 39   6   5    | 28  1     289   | 389 4   7    |
| 8    249 23   | 7   459   459   | 359 6   1    |
+---------------+-----------------+--------------+

Play this puzzle online at the Daily Sudoku site

Limiting myself to just standard VH moves, I couldn't find a one-stepper.

Quote:
X-Wing (4), c14
XYZ-Wing (489), pivot r2c3


Confused - having done the first stage of the hidden text, there aren't the numbers available to do the 2nd stage. Should that be a 6, not a 4?
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Ema Nymton



Joined: 17 Apr 2009
Posts: 87

PostPosted: Tue Dec 18, 2012 4:44 pm    Post subject: Reply with quote

.

Sorry, I can't even get there from here.


Code:

+---------------+-----------------+-----------------+
| 1    5   469  | 3   49    7     | 269   29   8    |
| 469  3   4689 | 248 24589 24589 | 1     7    4569 |
| 2    7   489  | 1   6     4589  | 59    359  3459 |
+---------------+-----------------+-----------------+
| 4569 249 7    | 248 248   3     | 25689 1    569  |
| 345  24  1    | 9   248   6     | 7     2358*35   |
| 369  8   2369 | 5   7     1     | 4     239  369  |
+---------------+-----------------+-----------------+
| 7    1   49   | 6   3     4589  | 589   589  2    |
| 39   6   5    | 28  1     289   | 389   4    7    |
| 8    249 2349 | 7   459   459   | 359   6    1    |
+---------------+-----------------+-----------------+

Play this puzzle online at the Daily Sudoku site


* r4C8 = 8; how?

What steps clear the cell to = 8?

Ema Nymton
~ @ : o ?
.
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Marty R.



Joined: 12 Feb 2006
Posts: 5124
Location: Rochester, NY, USA

PostPosted: Tue Dec 18, 2012 5:08 pm    Post subject: Reply with quote

Quote:
Confused - having done the first stage of the hidden text, there aren't the numbers available to do the 2nd stage. Should that be a 6, not a 4?


Sorry, you're right, it s a 689 XYZ-Wing. My post has been edited to reflect that. Embarassed
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Marty R.



Joined: 12 Feb 2006
Posts: 5124
Location: Rochester, NY, USA

PostPosted: Tue Dec 18, 2012 5:12 pm    Post subject: Reply with quote

Quote:
* r4C8 = 8; how?

What steps clear the cell to = 8?


Ema,

I guess you mean r5c8. Take an extremely close look at c7.
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Ema Nymton



Joined: 17 Apr 2009
Posts: 87

PostPosted: Wed Dec 19, 2012 9:30 am    Post subject: Reply with quote

Marty R. wrote:
Quote:
* r4C8 = 8; how?

What steps clear the cell to = 8?


Ema,

I guess you mean r5c8. Take an extremely close look at c7.


Sorry, you are right. I meant r5c8.

No matter how close I look at c7; I still cannot sort out why the cell = 8.

Ema Nymton
~@:o?
.
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hughwill



Joined: 05 Apr 2010
Posts: 167
Location: Birmingham UK

PostPosted: Wed Dec 19, 2012 10:49 am    Post subject: Reply with quote

Quote:
Take an extremely close look at c7.


No matter how close I look at c7; I still cannot sort out why the cell = 8.



Look for a hidden pair in c7
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Ema Nymton



Joined: 17 Apr 2009
Posts: 87

PostPosted: Wed Dec 19, 2012 12:25 pm    Post subject: Reply with quote

.

Thank you all. This is one deviously delicious puzzle.

Ema Nymton
~@:o?
.
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