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Free Press September 21, 2012

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keith

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

Posted: Sat Sep 22, 2012 4:25 am Post subject: Free Press September 21, 2012

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

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Sat Sep 22, 2012 6:05 am Post subject:

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

Play/Print this puzzle online

tlanglet

Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

Posted: Sat Sep 22, 2012 2:38 pm Post subject:

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

Marty R.

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

Posted: Sat Sep 22, 2012 4:44 pm Post subject:

Quote:

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

I took the easy road.

Ted,

I'm having trouble finding the SL.

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Sat Sep 22, 2012 5:01 pm Post subject:

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

Play/Print this puzzle online

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

keith

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

Posted: Sat Sep 22, 2012 8:26 pm Post subject:

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

keith

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

Posted: Sat Sep 22, 2012 11:30 pm Post subject:

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

Marty R.

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

Posted: Sun Sep 23, 2012 12:04 am Post subject:

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.

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Sun Sep 23, 2012 3:11 pm Post subject:

arkietech wrote:

Code:

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.

keith

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

Posted: Sun Sep 23, 2012 6:32 pm Post subject:

keith wrote:

Here's what I see:

Code:

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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