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3-8 DB

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Earl

Joined: 30 May 2007
Posts: 677
Location: Victoria, KS

Posted: Sat Mar 08, 2008 1:54 pm Post subject: 3-8 DB

The March 8 DB succumbs to an evident xy-wing in boxes 8-9.

Earl

Code:

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

Play this puzzle online at the Daily Sudoku site

storm_norm

Joined: 18 Oct 2007
Posts: 1741

Posted: Sat Mar 08, 2008 10:42 pm Post subject:

Code:

8 2 5 | 79 79 6 | 3 1 4
9 3 4 | 1 2 5 | 8 7 6
1 7 6 | 4 3 8 | 9 2 5
------------------------------------------------------------------
6 5 9 | 78 178 3 | 27 4 128
3 4 2 | 6 178 9 | 57 58 18
7 1 8 | 5 4 2 | 6 9 3
------------------------------------------------------------------
2 69 3 | 89 5689 1 | 4 58 7
5 69 7 | 2 689 4 | 1 3 89
4 8 1 | 3 59 7 | 25 6 29

the 589 xy-wing is very evident.

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