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Free Press Sep 3, 2010

 
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keith



Joined: 19 Sep 2005
Posts: 3342
Location: near Detroit, Michigan, USA

PostPosted: Fri Sep 03, 2010 4:59 pm    Post subject: Free Press Sep 3, 2010 Reply with quote

Code:

Puzzle: FP090310
+-------+-------+-------+
| . 9 . | 1 . 2 | . 3 . |
| . 5 7 | . . . | . . . |
| . . . | . . . | 5 . . |
+-------+-------+-------+
| . . 5 | . . 7 | 8 1 . |
| 3 . . | . . . | . . 9 |
| . 4 1 | . . . | 3 . . |
+-------+-------+-------+
| . . 4 | . . . | . . . |
| . . . | . 8 1 | 9 2 . |
| . 2 . | 6 . 3 | . 7 . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Fri Sep 03, 2010 9:12 pm    Post subject: Reply with quote

After considerable time I'm finding this a major struggle.
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keith



Joined: 19 Sep 2005
Posts: 3342
Location: near Detroit, Michigan, USA

PostPosted: Fri Sep 03, 2010 9:20 pm    Post subject: Reply with quote

Marty R. wrote:
After considerable time I'm finding this a major struggle.
That's why they call it Labor Day? Wink
Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Fri Sep 03, 2010 10:10 pm    Post subject: Reply with quote

I finally slogged my way through it.

Quote:
4-cell XY-Chain; r3c2, r5c3<>8
XY-Wing (587)
W-Wing (58)
UR 29; r7c45<>7 due to invalidity
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK

PostPosted: Sat Sep 04, 2010 12:19 am    Post subject: Reply with quote

Indeed challenging! Three wings...
Quote:
xy-wing pivoted on an ANP (7=5)r8c4 - (5=28)r5c34 - (8=7)r5c2 ; r8c2<>7
w-wing(58) (5=8)r5c4 - r5c2=r7c2 - (8=5)r7c8 ; r5c8<>5, r7c4<>5
m-wing(56) (5=6)r6c8 - r5c8=(6-5)r5c6=r7c6 ; r7c8<>5
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Sat Sep 04, 2010 4:03 am    Post subject: Reply with quote

Peter, an interesting first step. An alternate perspective:

Code:
 (7=82=5)r5c234 - (5=7)r8c4  =>  r8c2<>7
 +-----------------------------------------------------------------------+
 |  468    9      68     |  1      5      2      |  47     3      678    |
 |  1468   5      7      |  3      69     4689   |  2      4689   168    |
 |  12468  138    2368   |  789    679    4689   |  5      4689   168    |
 |-----------------------+-----------------------+-----------------------|
 |  9      6      5      |  4      3      7      |  8      1      2      |
 |  3      78     28     |  258    1      568    |  47     456    9      |
 |  278    4      1      |  2589   269    5689   |  3      56     567    |
 |-----------------------+-----------------------+-----------------------|
 |  1578   178    4      |  2579   279    59     |  6      58     3      |
 |  567    37     36     |  57     8      1      |  9      2      4      |
 |  58     2      9      |  6      4      3      |  1      7      58     |
 +-----------------------------------------------------------------------+
 # 80 eliminations remain
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Mogulmeister



Joined: 03 May 2007
Posts: 703

PostPosted: Tue Sep 07, 2010 3:57 am    Post subject: Reply with quote

Nice ALS xz Danny.
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