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July 16 VH

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS

PostPosted: Thu Jul 16, 2009 2:13 am    Post subject: July 16 VH Reply with quote

A refreshing change from the same old routine solution.

A Solution: 589 xyz-wing eliminates the 8 in R4C4 and solves the puzzle.


Early Earl
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Thu Jul 16, 2009 6:54 pm    Post subject: Reply with quote

After basics:
Code:
+-------------+-------------+-------------+
| 7   9   3   | 6   48  48  | 1   5   2   |
| 1   5   8   | 79  79  2   | 36  34  346 |
| 2   4   6   | 1   5   3   | 8   9   7   |
+-------------+-------------+-------------+
| 38  7   5   | 28  1   6   | 4   23  9   |
| 38  2   4   | 589 89  7   | 356 1   36  |
| 6   1   9   | 245 3   45  | 25  7   8   |
+-------------+-------------+-------------+
| 4   3   7   | 58  26  58  | 9   26  1   |
| 9   8   2   | 3   46  1   | 7   46  5   |
| 5   6   1   | 47  247 9   | 23  8   34  |
+-------------+-------------+-------------+
The pair of <36> in B36 can be seen as either a W-wing or a (rare) Type 6 UR. Either way, those two cells are solved as <6>.

Which does not solve the puzzle ...

Keith
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George Woods



Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK

PostPosted: Thu Jul 16, 2009 9:46 pm    Post subject: useless w wing Reply with quote

Yes indeed the extra solution of two sixes does not help, but the xyz wing 589 works either before or afterwards!
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