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Feb 16 VH

 
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kuskey



Joined: 10 Dec 2008
Posts: 120
Location: Pembroke, NH

PostPosted: Wed Feb 16, 2011 5:43 am    Post subject: Feb 16 VH Reply with quote

This puzzle seemed more difficult than it turned out to be - more scans to do than usual. After basics lots of xy-wings, xyz-wings and w-wings to check out. Fortunately, the x-wing on 7 in r14 appeared immediately in my x-wing scan, revealing the 279 xy-wing that solved the puzzle.
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Ema Nymton



Joined: 17 Apr 2009
Posts: 83

PostPosted: Wed Feb 16, 2011 2:00 pm    Post subject: Reply with quote

.

Translated into English.

Code:

+-------------+--------------+-------------+
| 5    3    2 | 19  *17   8  | 6  4  *79C  |
| 4    679  8 | 69   5   A27 | 3  1  B279  |
| 679  679  1 | 369  2367 4  | 5  278 2789 |
+-------------+--------------+-------------+
| 1    268  9 | 46  *2467 3  | 28 5  *67   |
| 268  4    7 | 5    26   1  | 28 9   3    |
| 26   5    3 | 8    9    27 | 4  67  1    |
+-------------+--------------+-------------+
| 3789 789  4 | 2    38   59 | 1  68  568  |
| 2389 1289 6 | 1349 1348 59 | 7  28  258  |
| 28   128  5 | 7    18   6  | 9  3   4    |
+-------------+--------------+-------------+


The cells r1c5, r1c9, r4c5, and r4c9 are linked by '7'. A '7' must be in either r1c5 - r1c9 or r4c5 - r4c9

The cells r2c9, r3c5, and r3c9 cannot hold a '7', leaving r2c9 = '2' or '9'. The ABC arraignment removes the '7' from r1c5.

Ema Nymton
.
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