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Jan 10 DB

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Sat Jan 10, 2009 3:47 pm    Post subject: Jan 10 DB Reply with quote
The Jan 10 DB has a single-step solution: an xy-wing (458).

Earl

Code:

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

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