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DB Saturday Puzzle - June 17, 2006

 
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keith



Joined: 19 Sep 2005
Posts: 3179
Location: near Detroit, Michigan, USA

PostPosted: Sat Jun 17, 2006 10:45 am    Post subject: DB Saturday Puzzle - June 17, 2006 Reply with quote

I found this one easier than most.
Code:

Puzzle: DB061706  ******
+-------+-------+-------+
| 3 . . | . . . | 1 . . |
| . . . | 6 . . | . 4 3 |
| 1 . . | . 3 4 | . 5 6 |
+-------+-------+-------+
| . . . | . . . | 7 . 4 |
| . 7 . | . 1 . | . 2 . |
| 9 . 8 | . . . | . . . |
+-------+-------+-------+
| 7 2 . | 4 8 . | . . 9 |
| 6 4 . | . . 7 | . . . |
| . . 1 | . . . | . . 7 |
+-------+-------+-------+

Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5166
Location: Rochester, NY, USA

PostPosted: Sat Jun 17, 2006 7:37 pm    Post subject: Reply with quote

This started out like a pappocom 1-star, with 10 cells solved in the initial scan of bands and stacks. It continued that way, with another 10 cells solved during what Alan would call "candidate profile derivation." It continued along easily--too easily, as it turned out--until I found myself backed into a corner with duplicates. Ditto on my second attempt.

The third try didn't go so easily, so I figured that maybe I didn't make whatever mistakes were made during the first two attempts. After all possibilities with basic techniques were exhausted, I noticed an "almost" Unique X-Wing on 89.

At this point, the puzzle could probably have been solved with a chain or two, but I kept looking and finally found an X-Wing on "3" which solved the puzzle.
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