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yeoks
Joined: 16 May 2010
Posts: 33
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 Posted: Wed Sep 11, 2013 7:52 am Post subject: Sep 11 VH |
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| Code: |
+------------+-----------+--------------+
| 7 129 5 | 8 249 3 | 124 1249 6 |
| 29* 4 13 | 29* 6 7 | 8 13 5 |
| 8 6 239 | 1 249 5 | 7 2349 29 |
+------------+-----------+--------------+
| 4 8 12 | 5 3 9 | 12 6 7 |
| 5 7 6 | 24 12 14 | 9 8 3 |
| 3 129 129 | 7 8 6 | 5 12 4 |
+------------+-----------+--------------+
| 29* 5 4 | 6 1-9 8 | 3 7 129 |
| 6 29 8 | 3 7 14 | 24 5 129 |
| 1 3 7 | 49* 5 2 | 6 49 8 |
+------------+-----------+--------------+
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A skyscraper (9) in Cols 14 => r7c5<>9 does it. |
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roaa
Joined: 18 Apr 2009
Posts: 112
Location: Sweden
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| Posted: Wed Sep 11, 2013 8:53 am Post subject: |
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| An xy-wing 249 forces r8c2=9 which solves it. |
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the_lock_man
Joined: 18 Dec 2012
Posts: 40
Location: Portsmarfff, UK
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| Posted: Wed Sep 11, 2013 1:24 pm Post subject: |
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I'm obviously being fffick, because I don't see that XY wing at all (where is the pivot?)
I used an xy wing 129, using the chain of 29s to extend the pincers, making r5c4<>2 |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed Sep 11, 2013 2:59 pm Post subject: |
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| Quote: | | because I don't see that XY wing at all (where is the pivot?) |
Pivot is in r8c7. |
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the_lock_man
Joined: 18 Dec 2012
Posts: 40
Location: Portsmarfff, UK
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| Posted: Mon Sep 16, 2013 12:45 pm Post subject: |
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| I've caught up now - I was trying to see how that XY wing was forcing R8C2<>2, rather than seeing that the wing made R8C9<>9. Apologies for my fffickness. |
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