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July 3 DB

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Sat Jul 03, 2010 11:53 am    Post subject: July 3 DB Reply with quote
The July 3 DB is a little firecracker. The usually reliable wings were not apparent so I resorted to the old chain gang.

A solution: xy-chain eliminates the 3 in R7C6


Earl


Code:

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

Play this puzzle online at the Daily Sudoku site
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Louise56



Joined: 21 Sep 2005
Posts: 94
Location: El Cajon, California USA
PostPosted: Sat Jul 03, 2010 3:59 pm    Post subject: Reply with quote
I liked this puzzle. I came across hidden pairs and a triple. I solved it with a 349 wing with the pivot at r7c6. With a short chain it eliminates the 4 in r6c7.
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