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Free Press September 21, 2012

 
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keith



Joined: 19 Sep 2005
Posts: 3165
Location: near Detroit, Michigan, USA

PostPosted: Sat Sep 22, 2012 4:25 am    Post subject: Free Press September 21, 2012 Reply with quote

Code:
Puzzle: FP092112
+-------+-------+-------+
| . . 4 | . . . | . . . |
| . . . | 6 9 5 | . . . |
| . . . | . . . | . 1 3 |
+-------+-------+-------+
| . 9 . | . . 4 | . . . |
| . 5 . | 8 . . | . 6 . |
| . . 7 | 3 6 . | . 8 . |
+-------+-------+-------+
| 9 7 . | . . . | 2 . . |
| . . . | 5 3 2 | . . . |
| . . 1 | . . . | 6 . . |
+-------+-------+-------+

Quote:
A tough road if you don't use the UR.


Keith
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arkietech



Joined: 31 Jul 2008
Posts: 1716
Location: Northwest Arkansas USA

PostPosted: Sat Sep 22, 2012 6:05 am    Post subject: Reply with quote

Code:

 *--------------------------------------------------------------------*
 | 2578   28     4      | 127    1278   3      | 5789   2579   6      |
 | 12378  1238   23     | 6      9      5      | 478    247    247    |
 | 25678  268    9      | 247    2478   78     | 578    1      3      |
 |----------------------+----------------------+----------------------|
 |*68     9     *68     | 27     5      4      | 3      27     1      |
 | 1234   5      23     | 8      27     19     | 479    6      2479   |
 | 124    124    7      | 3      6      19     | 459    8      2459   |
 |----------------------+----------------------+----------------------|
 | 9      7      5      | 14     148    6      | 2      3      48     |
 | 4-68   468   *68     | 5      3      2      | 1      79     79     |
 | 23     23     1      | 9      478    78     | 6      45     458    |
 *--------------------------------------------------------------------*
Unique rectantle 68r48c13 => -68r8c1


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tlanglet



Joined: 17 Oct 2007
Posts: 2461
Location: Northern California Foothills

PostPosted: Sat Sep 22, 2012 2:38 pm    Post subject: Reply with quote

w-wing(27)r4c8|r5c5 grouped SL 2r25c3
(7=2)r5c-r5c3=r2c3-r2c89=r1c8-(2=7)r4c8; -7r4c4,r5c79

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5159
Location: Rochester, NY, USA

PostPosted: Sat Sep 22, 2012 4:44 pm    Post subject: Reply with quote

Quote:
A tough road if you don't use the UR.


I took the easy road.

Ted,

I'm having trouble finding the SL.
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arkietech



Joined: 31 Jul 2008
Posts: 1716
Location: Northwest Arkansas USA

PostPosted: Sat Sep 22, 2012 5:01 pm    Post subject: Reply with quote

I didn't see your "hidden" note. Shocked
Code:
  *--------------------------------------------------------------------*
 | 2578   28     4      | 127    1278   3      | 5789  a2579   6      |
 | 12378  1238  c23     | 6      9      5      | 478   b247   b47-2   |
 | 25678  268    9      | 247    2478   78     | 578    1      3      |
 |----------------------+----------------------+----------------------|
 | 68     9      68     | 27     5      4      | 3      7-2    1      |
 | 1234   5     d23     | 8      27     19     | 479    6      2479   |
 |e124   e124    7      | 3      6      19     | 459    8     f2459   |
 |----------------------+----------------------+----------------------|
 | 9      7      5      | 14     148    6      | 2      3      48     |
 | 468    468    68     | 5      3      2      | 1      79     79     |
 | 23     23     1      | 9      478    78     | 6      45     458    |
 *--------------------------------------------------------------------*
 2r1c8=r2c89-r2c3=r5c3-r6c12=2r6c9 => -2r2c9,r4c8
edited eureka three times


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Last edited by arkietech on Sat Sep 22, 2012 10:10 pm; edited 1 time in total
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keith



Joined: 19 Sep 2005
Posts: 3165
Location: near Detroit, Michigan, USA

PostPosted: Sat Sep 22, 2012 8:26 pm    Post subject: Reply with quote

Marty R. wrote:
Quote:
A tough road if you don't use the UR.


I took the easy road.

Ted,

I'm having trouble finding the SL.

Look in C39. The pincers are R4C8 R5C5. Color on 2 from each pincer.

Keith
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keith



Joined: 19 Sep 2005
Posts: 3165
Location: near Detroit, Michigan, USA

PostPosted: Sat Sep 22, 2012 11:30 pm    Post subject: Reply with quote

Here's what I see:

Code:
+-------------------+-------------------+-------------------+
| 2578  28    4     | 127   1278  3     | 5789  2579  6     |
| 12378 1238 d23    | 6     9     5     | 478   247  c247   |
| 25678 268   9     | 247   2478  78    | 578   1     3     |
+-------------------+-------------------+-------------------+
| 68    9     68    | 27    5     4     | 3    A27    1     |
| 1234  5    e23    | 8    F27    19    | 479   6    b2479  |
| 124   124   7     | 3     6     19    | 459   8    b2459  |
+-------------------+-------------------+-------------------+
| 9     7     5     | 14    148   6     | 2     3     48    |
| 468   468   68    | 5     3     2     | 1     79    79    |
| 23    23    1     | 9     478   78    | 6     45    458   |
+-------------------+-------------------+-------------------+

If A is 2, b is not 2, c is 2, d is not 2, e is 2, F is 7.

If F is 2, e is not 2, d is 2, c is not 2, b is 2, A is 7.

AF are pincers on 7.

A W-wing excited by a grouped skyscraper, if you will.

Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5159
Location: Rochester, NY, USA

PostPosted: Sun Sep 23, 2012 12:04 am    Post subject: Reply with quote

Maybe semantics, maybe different ways of visualizing things. I still can't see it as a W-Wing connected by strong link(s) on 2, but can easily see how it works as an AIC.
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Sun Sep 23, 2012 3:11 pm    Post subject: Reply with quote

arkietech wrote:
Code:
  *--------------------------------------------------------------------*
 | 2578   28     4      | 127    1278   3      | 5789  a2579   6      |
 | 12378  1238  c23     | 6      9      5      | 478   b247   b47-2   |
 | 25678  268    9      | 247    2478   78     | 578    1      3      |
 |----------------------+----------------------+----------------------|
 | 68     9      68     | 27     5      4      | 3      7-2    1      |
 | 1234   5     d23     | 8      27     19     | 479    6      2479   |
 |e124   e124    7      | 3      6      19     | 459    8     f2459   |
 |----------------------+----------------------+----------------------|
 | 9      7      5      | 14     148    6      | 2      3      48     |
 | 468    468    68     | 5      3      2      | 1      79     79     |
 | 23     23     1      | 9      478    78     | 6      45     458    |
 *--------------------------------------------------------------------*
 2r1c8=r2c89-r2c3=r5c3-r6c12=2r6c9 => -2r2c9,r4c8


A fun X-Chain. However, you can reduce it to Kite/Turbot/ER c-d-e-f for r2c9<>2. Then a Locked Candidate and Singles complete the puzzle.
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keith



Joined: 19 Sep 2005
Posts: 3165
Location: near Detroit, Michigan, USA

PostPosted: Sun Sep 23, 2012 6:32 pm    Post subject: Reply with quote

keith wrote:
Here's what I see:

Code:
+-------------------+-------------------+-------------------+
| 2578  28    4     | 127   1278  3     | 5789  2579  6     |
| 12378 1238 d23    | 6     9     5     | 478   247  c247   |
| 25678 268   9     | 247   2478  78    | 578   1     3     |
+-------------------+-------------------+-------------------+
| 68    9     68    | 27    5     4     | 3    A27    1     |
| 1234  5    e23    | 8    F27    19    | 479   6    b2479  |
| 124   124   7     | 3     6     19    | 459   8    b2459  |
+-------------------+-------------------+-------------------+
| 9     7     5     | 14    148   6     | 2     3     48    |
| 468   468   68    | 5     3     2     | 1     79    79    |
| 23    23    1     | 9     478   78    | 6     45    458   |
+-------------------+-------------------+-------------------+

If A is 2, b is not 2, c is 2, d is not 2, e is 2, F is 7.

If F is 2, e is not 2, d is 2, c is not 2, b is 2, A is 7.

AF are pincers on 7.

A W-wing excited by a grouped skyscraper, if you will.

Keith

Didn't Danny point out the possibility of one of these over a year ago?

I recall a post that went something like this:

A Turbot (kite / skyscraper) is aX=bX-cX=dX where abcd are any cadidates, = is a strong link, - is a weak link.

The argument is, one or both of the cells containing b and c is not X, so one or both of the cells containing a and d is X.

So, if you have XY-aX=bX-cX=dX-XY, the end cells are pincers on Y.

Keith
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