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Feb 2 VH

 
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hughwill



Joined: 05 Apr 2010
Posts: 413
Location: Birmingham UK

PostPosted: Mon Feb 02, 2015 10:31 am    Post subject: Feb 2 VH Reply with quote

After basics:
Code:

+------------+---------+------------+
| 12  56 12  | 3  56 9 | 7    4  8  |
| 78  4  78  | 2  56 1 | 3    9  56 |
| 59  3  69  | 4  8  7 | 56   1  2  |
+------------+---------+------------+
| 19  8  149 | 7  49 5 | 26   26 3  |
| 6   7  5   | 1  3  2 | 9    8  4  |
| 3   2  49  | 8  49 6 | 1    5  7  |
+------------+---------+------------+
| 4   56 68  | 9  2  3 | 58   7  1  |
| 27  9  27  | 56 1  8 | 4    3  56 |
| 258 1  3   | 56 7  4 | 2568 26 9  |
+------------+---------+------------+

Play this puzzle online at the Daily Sudoku site

Either a Classic:
Quote:
568 XY-Wing pivot r7c7
or a 'dubious':
Quote:
type 1 UR on 49 in boxes 4 and 5
sets this one in one step.

Hugh
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danw



Joined: 31 Jul 2012
Posts: 16
Location: Phoenixville, PA USA

PostPosted: Mon Feb 02, 2015 10:59 am    Post subject: Reply with quote

Another one step but also equally dubious solution:

Quote:
type 1 UR on 26 in boxes 6 and 9


I hope I did the fancy hidden solution correctly, thank you Hugh for your great posts.

Dan W
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yeoks



Joined: 16 May 2010
Posts: 33

PostPosted: Mon Feb 02, 2015 12:06 pm    Post subject: Reply with quote

Remote Pairs 56 in r7c2 and r8c9 removes 5 from r7c7.
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Mon Feb 02, 2015 5:07 pm    Post subject: Reply with quote

I also used the UR.
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Clement



Joined: 24 Apr 2006
Posts: 982
Location: Dar es Salaam Tanzania

PostPosted: Mon Feb 02, 2015 5:48 pm    Post subject: Re: Feb 2 VH Reply with quote

hughwill wrote:
After basics:
Code:

+------------+---------+------------+
| 12  56 12  | 3  56 9 | 7    4  8  |
| 78  4  78  | 2  56 1 | 3    9  56 |
| 59  3  69  | 4  8  7 | 56   1  2  |
+------------+---------+------------+
| 19  8  149 | 7  49 5 | 26   26 3  |
| 6   7  5   | 1  3  2 | 9    8  4  |
| 3   2  49  | 8  49 6 | 1    5  7  |
+------------+---------+------------+
| 4   56 68  | 9  2  3 | 58   7  1  |
| 27  9  27  | 56 1  8 | 4    3  56 |
| 258 1  3   | 56 7  4 | 2568 26 9  |
+------------+---------+------------+

Play this puzzle online at the Daily Sudoku site

Either a Classic:
Quote:
568 XY-Wing pivot r7c7
or a 'dubious':
Quote:
type 1 UR on 49 in boxes 4 and 5
sets this one in one step.

Hugh
What is the meaning of dubious?
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hughwill



Joined: 05 Apr 2010
Posts: 413
Location: Birmingham UK

PostPosted: Tue Feb 03, 2015 9:27 am    Post subject: Re: Feb 2 VH Reply with quote

Clement wrote:
hughwill wrote:
or a 'dubious':
Quote:
type 1 UR on 49 in boxes 4 and 5
sets this one in one step.

Hugh What is the meaning of dubious?


Some say, and I do not count myself amongst their number, that
URs are somewhat lesser solutions compared with wings, fish, chains
etc. Thus the quote marks round the word..... Very Happy

Hugh
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