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May 3 DB

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Sat May 03, 2008 1:40 pm    Post subject: May 3 DB Reply with quote
The May 3 DB succumbs to a (238) xy-wing.

Earl

Code:

+-------+-------+-------+
| . . 8 | . . 9 | . . . |
| 5 . . | 6 . . | . 3 . |
| 7 . 1 | . . . | . 5 . |
+-------+-------+-------+
| 4 . . | . 7 2 | . . . |
| . . 3 | . . . | 9 . . |
| . . . | 8 9 . | . . 6 |
+-------+-------+-------+
| . 1 . | . . . | 6 . 7 |
| . 7 . | . . 4 | . . 1 |
| . . . | 9 . . | 5 . . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site
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Victor



Joined: 29 Sep 2005
Posts: 207
Location: NI
PostPosted: Sat May 03, 2008 3:02 pm    Post subject: Reply with quote
Quote:
succumbs to a (238) xy-wing.
as you say, Earl. I had a look for fancy stuff & found an M-wing in 38s in r89, but it doesn't do much - waste of time.
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Sat May 03, 2008 7:51 pm    Post subject: Reply with quote
ditto
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