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Free Press April 29, 2011

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Fri Apr 29, 2011 12:27 pm    Post subject: Free Press April 29, 2011 Reply with quote
Easier than yesterday's?
Code:
Puzzle: FP042911
+-------+-------+-------+
| 8 . 1 | . . 5 | . . . |
| 9 . 4 | . . . | . . . |
| . 5 . | . . . | . 3 . |
+-------+-------+-------+
| . 4 . | . 2 . | . 1 6 |
| 3 . . | 5 4 6 | . . 2 |
| 2 6 . | . 9 . | . 4 . |
+-------+-------+-------+
| . 2 . | . . . | . 6 . |
| . . . | . . . | 3 . 5 |
| . . . | 7 . . | 9 . . |
+-------+-------+-------+
Keith
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Fri Apr 29, 2011 2:35 pm    Post subject: Reply with quote
An AUR seemed to do the deed.......

Quote:
AUR(49)r13c49 external sis: r7c4=4,r9c9=4,r3c6=9; r9c6<>4
(4)r7c4;
||
(4)r9c9;
||
(9)r3c6-(9=4)r7c6;


A couple of xy-wings also complete the puzzle in one step.

Ted
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Fri Apr 29, 2011 5:21 pm    Post subject: Reply with quote
After basics:
Code:
+----------------+----------------+----------------+
| 8    3    1    | 49   6    5    | 2    7    49   |
| 9    7    4    | 2    38   13   | 6    5    18   |
| 6    5    2    | 489  7    149  | 14   3    1489 |
+----------------+----------------+----------------+
| 7    4    9    | 3    2    8    | 5    1    6    |
| 3    1    8    | 5    4    6    | 7    9    2    |
| 2    6    5    | 1    9    7    | 8    4    3    |
+----------------+----------------+----------------+
| 15   2    3    | 489  58   49   | 14   6    7    |
| 4    9    7    | 6    1    2    | 3    8    5    |
| 15   8    6    | 7    35   34   | 9    2    14   |
+----------------+----------------+----------------+
The XY-wing -134 does it in one step.

Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Fri Apr 29, 2011 6:10 pm    Post subject: Reply with quote
I think mine's similar to Ted's. Using external analysis on the 49 UR, r7c4 = 4 or 9 or r9c9 = 4. Either way, r7c5, r9c5 and r9c6 = 853.
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