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May 4 VH

 
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Marty R.



Joined: 12 Feb 2006
Posts: 5180
Location: Rochester, NY, USA

PostPosted: Sun May 04, 2014 5:17 am    Post subject: May 4 VH Reply with quote

Where's Clement? Laughing

Code:

+--------+------------+------------+
| 79 6 3 | 2   78  5  | 19 4   189 |
| 5  4 8 | 39  6   1  | 23 29  7   |
| 79 1 2 | 4   78  39 | 5  6   389 |
+--------+------------+------------+
| 3  7 9 | 5   1   2  | 6  8   4   |
| 1  8 4 | 6   39  39 | 7  5   2   |
| 6  2 5 | 7   4   8  | 19 3   19  |
+--------+------------+------------+
| 4  9 1 | 8   23  6  | 23 7   5   |
| 2  3 7 | 19  5   4  | 8  19  6   |
| 8  5 6 | 139 239 7  | 4  129 39  |
+--------+------------+------------+

Play this puzzle online at the Daily Sudoku site

Quote:
XYZ-Wing, pivot r9c4=>r9c5<>9
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hughwill



Joined: 05 Apr 2010
Posts: 228
Location: Birmingham UK

PostPosted: Sun May 04, 2014 9:35 am    Post subject: May 4 VH Reply with quote

Marty said:

Quote:
Where's Clement?


I think it's because it's Sunday, Marty. In this puzzle I thought that
the 19 UR would also get it out, but, despite leading to a lot more
basics, it doesn't make it and the XYZ is still needed.

A fairly simple VH therefore. Yesterday, I was looking through the archives
and found a much more interesting one that stumped me completely
(much more fun and loads of chat on the forum after...) :

Code:

+-------+-------+-------+
| . . . | 7 . . | 2 9 . |
| 9 . . | 2 . . | . 3 . |
| . . 2 | . 9 . | . . 5 |
+-------+-------+-------+
| . . . | 6 . 9 | . 1 4 |
| 7 . . | . . . | . . 2 |
| 4 2 . | 3 . 7 | . . . |
+-------+-------+-------+
| 6 . . | . 5 . | 1 . . |
| . 4 . | . . 6 | . . 9 |
| . 5 8 | . . 3 | . . . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site

(May 1st 2009)
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Marty R.



Joined: 12 Feb 2006
Posts: 5180
Location: Rochester, NY, USA

PostPosted: Sun May 04, 2014 5:04 pm    Post subject: Reply with quote

After basics:

Code:

+--------------+-----------+-----------+
| 5  168   14  | 7  3  148 | 2   9  16 |
| 9  178   147 | 2  6  5   | 48  3  17 |
| 38 13678 2   | 48 9  148 | 468 47 5  |
+--------------+-----------+-----------+
| 38 38    5   | 6  2  9   | 7   1  4  |
| 7  19    19  | 5  48 48  | 3   6  2  |
| 4  2     6   | 3  1  7   | 9   5  8  |
+--------------+-----------+-----------+
| 6  79    79  | 48 5  2   | 1   48 3  |
| 2  4     3   | 1  78 6   | 5   78 9  |
| 1  5     8   | 9  47 3   | 46  2  67 |
+--------------+-----------+-----------+

Play this puzzle online at the Daily Sudoku site

Limiting myself to the standard VH moves of X-, XY- and XY-Wings, I found a two-stepper without difficulty.
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JC Van Hay



Joined: 13 Jun 2010
Posts: 373
Location: Charleroi, Belgium

PostPosted: Sun May 04, 2014 6:39 pm    Post subject: Reply with quote

Code:
+------------------+-------------+------------------+
| 5   168    (14)  | 7   3   148 | 2      9   -1(6) |
| 9   178    17(4) | 2   6   5   | (48)   3   17    |
| 38  13678  2     | 48  9   148 | 4(68)  47  5     |
+------------------+-------------+------------------+
| 38  38     5     | 6   2   9   | 7      1   4     |
| 7   19     19    | 5   48  48  | 3      6   2     |
| 4   2      6     | 3   1   7   | 9      5   8     |
+------------------+-------------+------------------+
| 6   79     79    | 48  5   2   | 1      48  3     |
| 2   4      3     | 1   78  6   | 5      78  9     |
| 1   5      8     | 9   47  3   | 46     2   67    |
+------------------+-------------+------------------+
AIC : [6r1c9=(6-8)r3c7=(8-4)r2c7=4r2c3-(4=1)r1c3]-(1=6)r1c9

OR

+-------------------+-------------+-----------------+
| 5   168     (14)  | 7   3   148 | 2     9     16  |
| 9   (178)   (147) | 2   6   5   | (48)  3     1-7 |
| 38  1368-7  2     | 48  9   148 | 468   (47)  5   |
+-------------------+-------------+-----------------+
| 38  38      5     | 6   2   9   | 7     1     4   |
| 7   19      19    | 5   48  48  | 3     6     2   |
| 4   2       6     | 3   1   7   | 9     5     8   |
+-------------------+-------------+-----------------+
| 6   79      79    | 48  5   2   | 1     48    3   |
| 2   4       3     | 1   78  6   | 5     78    9   |
| 1   5       8     | 9   47  3   | 46    2     67  |
+-------------------+-------------+-----------------+
ALS-XZ Rule : [(7=48)r3c8.r2c7-(8=147)r1c3.r2c23]-(7=1)r2c9,7r3c2
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