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July 5 DB

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Sat Jul 05, 2008 11:40 am    Post subject: July 5 DB Reply with quote
The July 5 DB was a real firecracker for me. Coloring, xy-chain, more coloring, another xy-chain, and a final coloring. Someone out there must have a more direct solution.

Earl


Code:

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

Play this puzzle online at the Daily Sudoku site
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Asellus



Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA
PostPosted: Sat Jul 05, 2008 6:44 pm    Post subject: Reply with quote
2 XY Chains followed by a Skyscraper did it for me.
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