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Jul 9 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania

PostPosted: Sun Jul 08, 2012 11:25 pm    Post subject: Jul 9 VH Reply with quote

After the Basics
Code:

+-----------------+-------------+-----------------+
| 2346 234  13468 | 145 3469 35 | 23689 7    2469 |
| 9    234  13468 | 14  346  7  | 2368  2346 5    |
| 346  5    7     | 8   369  2  | 369   1    469  |
+-----------------+-------------+-----------------+
| 467  479  469   | 3   2    8  | 1     5    4679 |
| 5    347  3-4    | 9   1    6  | 237   *24  8    |
| 1    8    2     | 7   5    4  | 369   369  69   |
+-----------------+-------------+-----------------+
| 37   6    5     | 2   37   9  | 4     8    1    |
| 8    2479 *49    | 6   47   1  | 5     #29   3    |
| 234  1    349   | 45  8    35 | 2679  269  2679 |
+-----------------+-------------+-----------------+
I used two XY-Wings:-
XY-Wing 24 29 49 pivoted in r8c8; r5c3<>4 which opens another
XY-Wing 27 47 24 pivoted in r5c2; r8c8<>2.
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hughwill



Joined: 05 Apr 2010
Posts: 422
Location: Birmingham UK

PostPosted: Mon Jul 09, 2012 10:25 pm    Post subject: Post subject: Jul 9 VH Reply with quote

Code:

+--------------+-------------+-----------------+
| 2346 234 18  | 145 3469 35 | 23689 7    2469 |
| 9    234 18  | 14  346  7  | 2368  2346 5    |
| 346  5   7   | 8   3469 2  | 369   1    469  |
+--------------+-------------+-----------------+
| 47   9   6   | 3   2    8  | 1     5    47   |
| 5    347 34  | 9   1    6  | 27    24   8    |
| 1    8   2   | 7   5    4  | 369   369  69   |
+--------------+-------------+-----------------+
| 37   6   5   | 2   37   9  | 4     8    1    |
| 8    247 49  | 6   47   1  | 5     29   3    |
| 234  1   349 | 45  8    35 | 2679  269  2679 |
+--------------+-------------+-----------------+

Play this puzzle online at the Daily Sudoku site

With the 369 triple in box 6 I got to this with basics.
The 347 xy pivot r4c1 did the same trick as Clement's
249 followed by his setting 247. Just proves that you
don't always need all the basics!
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

PostPosted: Tue Jul 10, 2012 12:39 am    Post subject: Reply with quote

I like one steppers Very Happy
Code:
 
 *--------------------------------------------------------------------*
 | 2346   234    18     | 145    3469   35     | 23689  7      2469   |
 | 9      234    18     | 14     346    7      | 2368   2346   5      |
 | 346    5      7      | 8      369    2      | 369    1      469    |
 |----------------------+----------------------+----------------------|
 | 47     9      6      | 3      2      8      | 1      5      47     |
 | 5     b347    34     | 9      1      6      |a27     4-2    8      |
 | 1      8      2      | 7      5      4      | 369    369    69     |
 |----------------------+----------------------+----------------------|
 | 37     6      5      | 2      37     9      | 4      8      1      |
 | 8     c247    49     | 6      47     1      | 5     d29     3      |
 | 234    1      349    | 45     8      35     | 679-2  269    2679   |
 *--------------------------------------------------------------------*
m-wing
(2=7)r5c7-r5c2=(7-2)r8c2=2r8c8 => -2r5c8,r9c7; stte

either r5c7 is a 2 or r8c8 is a 2
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Marty R.



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

PostPosted: Tue Jul 10, 2012 1:49 am    Post subject: Reply with quote

Quote:
I like one steppers


So do I. But just as a personal preference, on these puzzles I try to use only the standard VH moves that are needed to solve them, i.e., X-, XY- and XYZ-Wings.

I used the same two wings as Clement.
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