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June 26 D B

 
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Earl



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

PostPosted: Sat Jun 26, 2010 2:09 pm    Post subject: June 26 D B Reply with quote

The June 26 DB defied a single bullet. Had to use a double barrell shot gun.

A solution: xy-wings (247, 267)

Earl


Code:

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

Play this puzzle online at the Daily Sudoku site
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Auburnmom



Joined: 13 Mar 2008
Posts: 25
Location: Auburn, AL

PostPosted: Sat Jun 26, 2010 3:31 pm    Post subject: Reply with quote

Can't believe this one. So easy even I got it quickly!
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Sat Jun 26, 2010 4:24 pm    Post subject: Reply with quote

Quote:
Or, the first wing and a BUG+1.

After basics:
Code:
+----------------+----------------+----------------+
| 4    1    5    | 3    6    7    | 8    2    9    |
| 6    9    8    | 5    2    1    | 47   3    47   |
| 3    27   27   | 9    4    8    | 1    5    6    |
+----------------+----------------+----------------+
| 2    8    347  | 1    9    6    | 347  47   5    |
| 5    67   1    | 8    3    4    | 267  9    27   |
| 9    346  346  | 2    7    5    | 346  1    8    |
+----------------+----------------+----------------+
| 8    2346 2346 | 46   5    9    | 247  467  1    |
| 1    5    46   | 7    8    2    | 9    46   3    |
| 7    246  9    | 46   1    3    | 5    8    24   |
+----------------+----------------+----------------+
Keith

Edit:
Quote:
A W-wing 2-7 solves it in one step.
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