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Free Press May 6, 2011

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Fri May 06, 2011 12:32 pm    Post subject: Free Press May 6, 2011 Reply with quote
Not yet started:

Code:
Puzzle: FP050611
+-------+-------+-------+
| . 8 . | 3 . . | . . . |
| . 4 . | 2 . . | . . 8 |
| 2 . . | . . . | . . 4 |
+-------+-------+-------+
| . . 7 | 8 . . | 5 . . |
| 9 6 . | . . . | . . . |
| . . 4 | . . 9 | 6 . . |
+-------+-------+-------+
| 6 . . | . . . | . . 1 |
| 1 9 . | . . 6 | . 2 . |
| . . . | . 3 5 | . 6 . |
+-------+-------+-------+

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: Fri May 06, 2011 4:28 pm    Post subject: Reply with quote
W-Wing (27); r9c9<>7.
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Fri May 06, 2011 5:29 pm    Post subject: Reply with quote
After basics:
Code:
+-------------------+-------------------+-------------------+
| 57    8     19    | 3     14579 147   | 2     1579  6     |
| 57    4     6     | 2     1579  17    | 1379  13579 8     |
| 2     13    139   | 6     15789 178   | 179   1579  4     |
+-------------------+-------------------+-------------------+
| 3     12    7     | 8     6     124   | 5     149   29    |
| 9     6     125   | 457   1247  3     | 1478  1478  27    |
| 8     125   4     | 57    127   9     | 6     17    3     |
+-------------------+-------------------+-------------------+
| 6     357   358   | 9     2478  2478  | 3478  3478  1     |
| 1     9     38    | 47    478   6     | 3478  2     5     |
| 4     27    28    | 1     3     5     | 789   6     79    |
+-------------------+-------------------+-------------------+

Marty, I needed an XY-wing to reveal a pair 25 in B4 before I noticed the W-wing. (I can see how you did it. Nice.)

Keith
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Asellus



Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA
PostPosted: Sat May 07, 2011 4:18 am    Post subject: Reply with quote
Due to the ER in box 4, that 279 XY-Wing eliminates <2> from r5c9 as well as from r4c2 thus accomplishing the same as the W-Wing.
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