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May 27 VH

 
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Marty R.



Joined: 12 Feb 2006
Posts: 5161
Location: Rochester, NY, USA

PostPosted: Mon May 27, 2013 4:16 am    Post subject: May 27 VH Reply with quote

Code:

+--------+--------------+------------+
| 19 2 8 | 349  6   149 | 139 5   7  |
| 19 7 3 | 2    18  5   | 6   149 48 |
| 6  4 5 | 3789 138 179 | 2   139 38 |
+--------+--------------+------------+
| 4  6 2 | 1    9   3   | 7   8   5  |
| 8  3 1 | 467  5   47  | 49  469 2  |
| 7  5 9 | 46   2   8   | 34  346 1  |
+--------+--------------+------------+
| 5  9 6 | 38   138 2   | 134 7   34 |
| 3  1 4 | 5    7   6   | 8   2   9  |
| 2  8 7 | 39   4   19  | 5   13  6  |
+--------+--------------+------------+

Play this puzzle online at the Daily Sudoku site

Limiting myself to standard VH techniques, I needed two moves.

1) X-Wing (3), c59=>r3c48,r7c47<>3
2) XY-Wing (14-3), pivot r7c7=>r6c8<>3
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arkietech



Joined: 31 Jul 2008
Posts: 1723
Location: Northwest Arkansas USA

PostPosted: Mon May 27, 2013 12:02 pm    Post subject: Reply with quote

Code:
 
 *-----------------------------------------------------------*
 | 19    2     8     | 349   6     149   |e19-3  5     7     |
 | 19    7     3     | 2     18    5     | 6     149   48    |
 | 6     4     5     | 3789  138   179   | 2     139   38    |
 |-------------------+-------------------+-------------------|
 | 4     6     2     | 1     9     3     | 7     8     5     |
 | 8     3     1     | 467   5     47    | 49    469   2     |
 | 7     5     9     | 46    2     8     |a34   b346   1     |
 |-------------------+-------------------+-------------------|
 | 5     9     6     | 38    138   2     |d134   7     34    |
 | 3     1     4     | 5     7     6     | 8     2     9     |
 | 2     8     7     | 39    4     19    | 5    c13    6     |
 *-----------------------------------------------------------*
s-wing
3r6c7=r6c8-(3=1)r9c8-r7c7=1r1c7 => -3r1c7; ste
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