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DB Saturday Puzzle - June 10, 2006

 
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keith



Joined: 19 Sep 2005
Posts: 3136
Location: near Detroit, Michigan, USA

PostPosted: Sat Jun 10, 2006 12:21 pm    Post subject: DB Saturday Puzzle - June 10, 2006 Reply with quote

Not an easy one!
Code:

Puzzle: DB061006  ******
+-------+-------+-------+
| 2 1 9 | . . . | . . . |
| . . . | . 5 2 | 9 3 . |
| . . . | . . . | . . 8 |
+-------+-------+-------+
| . 3 . | 6 . . | . . 5 |
| . 4 . | . 8 . | . 1 . |
| 5 . . | . . 7 | . 4 . |
+-------+-------+-------+
| 1 . . | . . . | . . . |
| . 8 2 | 3 4 . | . . . |
| . . . | . . . | 4 9 7 |
+-------+-------+-------+


Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5061
Location: Rochester, NY, USA

PostPosted: Sun Jun 11, 2006 12:31 am    Post subject: Reply with quote

I always give you my feedback on these. The first two times I backed myself into a corner with duplicates and, of course, I have no clue as to what mistakes I made.

Finally got it on the third try, doing basically what I did on the first two. There were lots of triples which fell into place early, strong links all over the place and a number of "almost" URs.

But I couldn't find anything to do with the above, so I solved it with brute force, four chains that resulted in contradictions, with an X-Wing mixed in. I'm sure there was a more finesseful (is that a word?) way to solve it, but damned if I could find it.

I'm not particularly proud of this one. Sad
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