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LA Times / Freep 11 April, 2008

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Sat Apr 12, 2008 2:17 pm    Post subject: LA Times / Freep 11 April, 2008 Reply with quote

I have not yet done this one:
Code:
Puzzle: FP041108
+-------+-------+-------+
| . 4 . | 1 6 . | 2 . . |
| . 9 . | . . . | . . . |
| 2 . . | . . . | . . 1 |
+-------+-------+-------+
| . . 6 | . . 8 | 3 . . |
| . 8 . | . 2 . | . 9 . |
| . . 7 | 9 . . | 4 . . |
+-------+-------+-------+
| 7 . . | . . . | . . 2 |
| . 1 . | . . . | . 4 . |
| . . . | . 4 7 | . 5 . |
+-------+-------+-------+

And, yes, the initial pattern is not quite symmetric.

Keith
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Sat Apr 12, 2008 3:42 pm    Post subject: Reply with quote

There is a way through this one, and it does not require anything very exotic. A little more than the basics will get you to this sticking point:
Code:
+-------------------+-------------------+-------------------+
| 35    4     8     | 1     6     359   | 2     7     359   |
| 6     9     1     | 23578 3578  235   | 58    38    4     |
| 2     7     35    | 358   89    4     | 5689  368   1     |
+-------------------+-------------------+-------------------+
| 9     2     6     | 4     57    8     | 3     1     57    |
| 4     8     35    | 357   2     1     | 567   9     567   |
| 1     35    7     | 9     35    6     | 4     2     8     |
+-------------------+-------------------+-------------------+
| 7     356   4     | 3568  1     359   | 689   368   2     |
| 358   1     29    | 23568 389   2359  | 6789  4     3679  |
| 38    36    29    | 2368  4     7     | 1     5     369   |
+-------------------+-------------------+-------------------+

Enjoy!

Keith
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Sat Apr 12, 2008 4:02 pm    Post subject: Reply with quote

after a skyscaper on 9 in rows 1 and 7 which kills two 9's in col 9...

Code:
R . . | . . G | . . .
. . . | o X . | . o .
. . G | o . . | . o .
---------------------
. . . | . . . | . . .
. . R | G . . | . . .
. G . | . R . | . . .
---------------------
. o . | o . o | . . .
G . . | o X o | . . o
. o . | . . . | . . o


here is the coloring on candidate 3 which removes a 3 from r8c5 and r2c5 and solves it.
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Johan



Joined: 25 Jun 2007
Posts: 206
Location: Bornem Belgium

PostPosted: Sat Apr 12, 2008 4:53 pm    Post subject: Reply with quote

I needed a skyscraper on <9>, the same Norm mentioned, then a {35} remote pair and a finned x-wing on <3> before reaching crunching point.
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Sat Apr 12, 2008 5:47 pm    Post subject: Reply with quote

I saw the <9> skyscrapers a little differently: Coloring with pincers R1C9 and R8C5 to take out <9> in R8C9, then add in the pair in C3 as another tower to take out R9C9.

Then, a couple of eliminations using the <35> chain of remote pairs does it. Or, there are some nice finned X-wings.

Solving R1C9 as <9> seems to be key. I do not see anything else possible in the grid I posted.

Keith
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Marty R.



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

PostPosted: Sat Apr 12, 2008 7:25 pm    Post subject: Reply with quote

I don't remember any of my intermediate grids, but I never went as far as looking for X-Wings and skyscrapers. There were two simple colorings, two ERs, and two remote pairs, one of which finished it off.
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Victor



Joined: 29 Sep 2005
Posts: 207
Location: NI

PostPosted: Sat Apr 12, 2008 11:18 pm    Post subject: Reply with quote

Like Marty, but just 1 ER (9s), 1 bit of colouring (9s) & then remote 35s. (Don't think I've ever seen so many connected prs in a grid - at one stage there were seven 35s, all connected in some way.)
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