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Free Press Feb 19, 2010

 
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Clement



Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
PostPosted: Fri Feb 19, 2010 6:40 pm    Post subject: Free Press Feb 19, 2010 Reply with quote
Code:
Puzzle: FP021910
+-------+-------+-------+
| . 6 . | . . . | . 8 1 |
| . . . | . 8 . | 2 . . |
| 1 . . | 7 2 . | . . . |
+-------+-------+-------+
| . . 7 | . . 6 | . 2 9 |
| 8 2 . | . . . | . 4 6 |
| 4 5 . | 2 . . | 3 . . |
+-------+-------+-------+
| . . . | . 5 2 | . . 8 |
| . . 4 | . 6 . | . . . |
| 5 7 . | . . . | . 3 . |
+-------+-------+-------+



Quote:
W-Wing <79>-9=9-<79> strong link 9 in row 8 eliminating 7 in r2c8 opens another
W-Wing <49>-9=9-<49> strong link 9 in row 7 eliminates the 4's in r23c29 solving the puzzle.


(edited by keith)
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Fri Feb 19, 2010 11:14 pm    Post subject: Reply with quote
Quote:
W-Wing (79) connected by 9s in c2, then Kite (9), pivoted in box 1
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Fri Feb 19, 2010 11:54 pm    Post subject: Reply with quote
Marty,

That's exactly how I did it. On further investigation, there are (at least) three W-wings lurking in the "after basics" grid.

Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Feb 20, 2010 1:09 am    Post subject: Reply with quote
Quote:
That's exactly how I did it.

Great minds think alike!!! Rolling Eyes
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Sat Feb 20, 2010 4:10 pm    Post subject: Reply with quote
I had three steps.

Quote:
w-wing 79,
An AIC found looking for xy-wings: (5=9)r3c6 - (9=4)r1c4 - r79c4 = r9c6 - (4=2)r9c9 - (2=5)r8c9; r3c9<>5,
BUG+3 forces r3c6=5.

Ted
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