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Dec 26 DB

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Sun Dec 27, 2009 3:44 am    Post subject: Dec 26 DB Reply with quote
The December 26 DB is a bit unusual.

Solution: a 467 xy-wing appears very early solves the puzzle.

Earl

Code:

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

Play this puzzle online at the Daily Sudoku site
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Sun Dec 27, 2009 4:08 am    Post subject: Reply with quote
a bit unusual that there was very few basics before the advanced step and a lot of basics afterwards??
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sun Dec 27, 2009 5:55 am    Post subject: Reply with quote
Norm summed it up very well. A strange one indeed.
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