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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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 Posted: Sat Apr 12, 2008 2:17 pm Post subject: LA Times / Freep 11 April, 2008 |
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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
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| Posted: Sat Apr 12, 2008 3:42 pm Post subject: |
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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
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| Posted: Sat Apr 12, 2008 4:02 pm Post subject: |
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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
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| Posted: Sat Apr 12, 2008 4:53 pm Post subject: |
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| 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
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| Posted: Sat Apr 12, 2008 5:47 pm Post subject: |
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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
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| Posted: Sat Apr 12, 2008 7:25 pm Post subject: |
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| 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
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| Posted: Sat Apr 12, 2008 11:18 pm Post subject: |
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| 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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