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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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 Posted: Sat Oct 27, 2007 11:45 am Post subject: Oct 27 DB |
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Here is the Oct 27 DB as in the St Louis paper.
Hint: This DB is a VW !
Earl
| Code: |
+-------+-------+-------+
| . . 7 | . 1 3 | . 4 . |
| 2 3 . | . . . | 1 . 5 |
| . . . | 2 . . | . 8 . |
+-------+-------+-------+
| 3 . . | 5 . . | . . . |
| 4 8 . | . . . | . 3 9 |
| . . . | . . 2 | . . 6 |
+-------+-------+-------+
| . 2 . | . . 8 | . . . |
| 6 . 5 | . . . | . 9 8 |
| . 4 . | 9 5 . | 3 . . |
+-------+-------+-------+
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[url=http://www.dailysudoku.com |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Sat Oct 27, 2007 1:21 pm Post subject: |
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I used an extended XY-wing. In other words, in a chain XY-XY-XY both ends have the same value. So, XZ-XY-XY-XY-YZ eliminates Z from any cell that sees both ends of the chain, just like the XY-wing XZ-XY-YZ does.
Keith |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sat Oct 27, 2007 3:43 pm Post subject: |
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| I did the basics and found myself staring at a BUG+1. |
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