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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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