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MM Diabolical - June 4, 2006

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Mon Jun 05, 2006 10:02 pm    Post subject: MM Diabolical - June 4, 2006 Reply with quote
Tracy, Marty, et al:

You may enjoy this one:
Code:

Puzzle: MM060406 Diabolical
+-------+-------+-------+
| . . . | 1 . 8 | . . . |
| . 5 . | . . . | . . . |
| 6 . 2 | . . . | 1 . 9 |
+-------+-------+-------+
| . 3 . | 7 . 1 | . 5 2 |
| 4 . . | . . . | . . . |
| 2 8 . | 4 . 6 | . 7 . |
+-------+-------+-------+
| 8 . . | . . . | 5 . 1 |
| . . . | . . . | . 3 . |
| . . . | 9 . 2 | . . . |
+-------+-------+-------+

http://www.sudoku.org.uk/DailySudoku.asp?day=04/06/2006

Since it was posted by me, you do not have to think too hard about what it may involve!

Best wishes,

Keith

Last edited by keith on Sat Jun 17, 2006 11:19 am; edited 1 time in total
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ravel



Joined: 21 Apr 2006
Posts: 536
PostPosted: Tue Jun 06, 2006 10:16 am    Post subject: Reply with quote
Nice! I had 2 UR type 1, and a UR 37 with strong link in r37c56, which eliminates a 3, so that a BUG+1 remains Smile
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Tue Jun 06, 2006 9:30 pm    Post subject: Reply with quote
Thanks, I like a puzzle from a different source than what I usually do.

I saw the 37 rectangle, but don't recall why I didn't use it. The first one I used involved 68, a Type 4. Later, I had a 24 and 34, both Type 1.

After I'd gone as far as I could with basic stuff, I thought I had my first-ever BUG or BUG+1, whatever it's called, but then I noticed a second three-candidate cell.

I looked for, but couldn't find, strong links and coloring, so I started a chain, one of the values led to a contradiction, and solving that cell finished things off.
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