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		wapati
 
 
  Joined: 10 Jun 2008 Posts: 472 Location: Brampton, Ontario, Canada.
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				 Posted: Sat Feb 14, 2009 4:07 pm    Post subject: W-wings | 
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				This one can be solved with 3 W-wings.
 
I only found 2 and used  an xy-wing to finish.  Happy hunting!
 
 	  | Code: | 	 		  
 
. . .|. . .|. . 8
 
5 . 4|. 2 9|. . .
 
9 7 .|4 . .|. . .
 
-----+-----+-----
 
. . 6|. . .|. 5 9
 
2 . 9|5 . 7|1 . 3
 
8 5 .|. . .|7 . .
 
-----+-----+-----
 
. . .|. . 5|. 7 6
 
. . .|1 9 .|3 . 5
 
4 . .|. . .|. . . | 	 
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		Marty R.
 
 
  Joined: 12 Feb 2006 Posts: 5770 Location: Rochester, NY, USA
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				 Posted: Sat Feb 14, 2009 7:34 pm    Post subject:  | 
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				| I couldn't solve it with W-Wings only. Started off with a Hidden UR, W-Wing, Coloring, two ERs and a W-Wing. Then a pincer transport on that last W-Wing finished it off. | 
			 
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		wapati
 
 
  Joined: 10 Jun 2008 Posts: 472 Location: Brampton, Ontario, Canada.
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				 Posted: Sat Feb 14, 2009 8:02 pm    Post subject:  | 
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				| I used the hidden UR also but found it didn't do much good.  It was fun to find!  Good spotting. | 
			 
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		Earl
 
 
  Joined: 30 May 2007 Posts: 677 Location: Victoria, KS
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				 Posted: Sat Feb 14, 2009 8:18 pm    Post subject: W wing | 
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				The type 3(?) UR (12) necessitates that C2C8 is <1>.  
 
That opened the puzzle for me.
 
 
Earl | 
			 
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		Marty R.
 
 
  Joined: 12 Feb 2006 Posts: 5770 Location: Rochester, NY, USA
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				 Posted: Sun Feb 15, 2009 1:05 am    Post subject: Re: W wing | 
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				 	  | Earl wrote: | 	 		  The type 3(?) UR (12) necessitates that C2C8 is <1>.  
 
That opened the puzzle for me.
 
 
Earl | 	  
 
Earl, I assume you mean r2c8. What is the reasoning? | 
			 
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		storm_norm
 
 
  Joined: 18 Oct 2007 Posts: 1741
 
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				 Posted: Sun Feb 15, 2009 7:13 am    Post subject:  | 
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				I did find a w-wing that solved it with a few extensions and after the skyscraper on 3
 
 	  | Code: | 	 		  .------------------.------------------.------------------.
 
| 3     6     2    | 7     5     1    | 49    49    8    |
 
| 5    W18    4    |W38    2     9    | 6     13    7    |
 
| 9     7     18   | 4     368   368  | 5     123   12   |
 
:------------------+------------------+------------------:
 
| 7    A13    6    | 238   1348  2348 | 28    5     9    |
 
| 2     4     9    | 5     68    7    | 1     68    3    |
 
| 8     5    #13   | 9     136  2-36  | 7     26    4    |
 
:------------------+------------------+------------------:
 
| 1    W2389 W38   |2-38   348   5    | 2489  7     6    |
 
| 6    W28    7    | 1     9     248  | 3     248   5    |
 
| 4    W2389  5    | 6     7     238  | 289   1289  12   |
 
'------------------'------------------'------------------' | 	  
 
this grid is after the 3 skyscraper.
 
the w-wing on {3,8} is marked with the grouped strong link.
 
now with some extensions from the 3 in r7c3 the puzzle cracks.
 
first the 3 in r7c4 is toast...
 
 
then we extend the 3 from r7c3 to cell A and the 3 in r4c4 is toast.
 
reduced to singles.
 
 
(3=8)r2c4 - (8)r2c2 = (8)r789c2 - (8=3)r7c3; r7c4 <> 3
 
(3=8)r2c4 - (8)r2c2 = (8)r789c2 - (8=3)r7c3 - (3)r6c3 = (3)r4c2; r4c4 <> 3 | 
			 
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