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Free Press April 15, 2011

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Mon Apr 18, 2011 2:55 pm    Post subject: Free Press April 15, 2011 Reply with quote
Not yet done. Requires advanced moves, but seems to be on the easy side.
Code:

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

Play this puzzle online at the Daily Sudoku site

Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon Apr 18, 2011 4:41 pm    Post subject: Reply with quote
I used the Type 4 UR on 19 and an M-Wing on 25; r4c5<>2
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Mon Apr 18, 2011 6:24 pm    Post subject: Reply with quote
After basics:
Code:
+----------------+----------------+----------------+
| 19   4    5    | 2    19   8    | 6    7    3    |
| 1289 7    28   | 3    159  6    | 58   4    158  |
| 18   3    6    | 57   4    157  | 2    9    158  |
+----------------+----------------+----------------+
| 6    5    278  | 478  23   379  | 49   1    249  |
| 28   9    4    | 568  1256 15   | 7    3    25   |
| 3    1    27   | 457  25   579  | 459  8    6    |
+----------------+----------------+----------------+
| 4    68   1    | 56   7    35   | 389  2    89   |
| 5    2    3    | 9    8    4    | 1    6    7    |
| 7    68   9    | 1    36   2    | 348  5    48   |
+----------------+----------------+----------------+
I found a number of two-steppers that involve a wing and a UR.

Keith
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Asellus



Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA
PostPosted: Tue Apr 19, 2011 3:45 am    Post subject: Reply with quote
There is a 12356 Sue de Coq in b5 and c5 that removes <5> from r56c4 and r6c6. It doesn't solve the puzzle, but is interesting.
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