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Free Press (Thursday) 25 June, 2009

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Thu Jun 25, 2009 10:39 pm    Post subject: Free Press (Thursday) 25 June, 2009 Reply with quote
A VH+. I found about three 1-step solutions.
Code:
Puzzle: FP062509
+-------+-------+-------+
| . . 1 | 8 . . | . . . |
| . . . | 1 . 6 | . 7 . |
| . 6 7 | . . . | 8 . . |
+-------+-------+-------+
| . 3 6 | . . 4 | 2 . . |
| . . . | 3 . 7 | . . . |
| . . 2 | 6 . . | . 3 . |
+-------+-------+-------+
| . . 3 | . . . | 7 8 . |
| . 9 . | 4 . 3 | . . . |
| . 4 . | . . 2 | 5 . . |
+-------+-------+-------+

Quote:
(If VH means X- XY- or XYZ-wing: There are none of those here.)
Keith

Last edited by keith on Fri Jun 26, 2009 5:48 am; edited 1 time in total
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Fri Jun 26, 2009 1:25 am    Post subject: Reply with quote
Code:
 *--------------------------------------------------*
 | 34   5    1    | 8    7    9    | 346  246  26   |
 | 2    8   *49   | 1   *34   6    | 34-9 7    5    |
 | 34-9 6    7    | 2   *34   5    | 8   *14  *19   |
 |----------------+----------------+----------------|
 | 8    3    6    | 59   159  4    | 2    15   7    |
 | 459  1    49   | 3    2    7    | 469  456  8    |
 | 459  7    2    | 6    15   8    | 149  3    19   |
 |----------------+----------------+----------------|
 | 6    2    3    | 59   59   1    | 7    8    4    |
 | 7    9    5    | 4    8    3    | 16   126  26   |
 | 1    4    8    | 7    6    2    | 5    9    3    |
 *--------------------------------------------------*

Here is one way
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chas47



Joined: 29 Jan 2008
Posts: 2
PostPosted: Fri Jun 26, 2009 2:00 am    Post subject: Reply with quote
I used UR on 59, followed by XYZ-wing, followed by BUG+1.

Charlie
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Fri Jun 26, 2009 3:50 am    Post subject: Reply with quote
arkietech wrote:
Code:
 *--------------------------------------------------*
 | 34   5    1    | 8    7    9    | 346  246  26   |
 | 2    8   *49   | 1   *34   6    | 34-9 7    5    |
 | 34-9 6    7    | 2   *34   5    | 8   *14  *19   |
 |----------------+----------------+----------------|
 | 8    3    6    | 59   159  4    | 2    15   7    |
 | 459  1    49   | 3    2    7    | 469  456  8    |
 | 459  7    2    | 6    15   8    | 149  3    19   |
 |----------------+----------------+----------------|
 | 6    2    3    | 59   59   1    | 7    8    4    |
 | 7    9    5    | 4    8    3    | 16   126  26   |
 | 1    4    8    | 7    6    2    | 5    9    3    |
 *--------------------------------------------------*

Here is one way

There's a 14 pseudo cell in column 8 because either a 1 or a 4 is needed to break up the 26 UR. That doesn't solve it, but leads to an easy BUG+2.
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Fri Jun 26, 2009 4:54 am    Post subject: Reply with quote
W-wing:
Code:
+-------------+-------------+-------------+
| 34@ 5   1   | 8   7   9   |346# 246 26  |
| 2   8  -49  | 1   34@ 6   |349# 7   5   |
| 349 6   7   | 2   34  5   | 8   14  19  |
+-------------+-------------+-------------+
| 8   3   6   | 59  159 4   | 2   15  7   |
| 459 1   49  | 3   2   7   | 469 456 8   |
| 459 7   2   | 6   15  8   | 149 3   19  |
+-------------+-------------+-------------+
| 6   2   3   | 59  59  1   | 7   8   4   |
| 7   9   5   | 4   8   3   | 16  126 26  |
| 1   4   8   | 7   6   2   | 5   9   3   |
+-------------+-------------+-------------+
Keith
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Fri Jun 26, 2009 5:47 am    Post subject: Reply with quote
Marty R. wrote:

There's a 14 pseudo cell in column 8 because either a 1 or a 4 is needed to break up the 26 UR. That doesn't solve it, but leads to an easy BUG+2.
This is quite cool. You get to here:
Code:
+-------------+-------------+-------------+
| 34  5   1   | 8   7   9   | 36  24  26  |
| 2   8   49@ | 1   34  6   |3-9  7   5   |
|3+49 6   7   | 2   34  5   | 8   14  19  |
+-------------+-------------+-------------+
| 8   3   6   | 9   1   4   | 2   5   7   |
| 5   1   49  | 3   2   7   | 49  6   8   |
| 49  7   2   | 6   5   8   |14+9 3   19  |
+-------------+-------------+-------------+
| 6   2   3   | 5   9   1   | 7   8   4   |
| 7   9   5   | 4   8   3   | 16  12  26  |
| 1   4   8   | 7   6   2   | 5   9   3   |
+-------------+-------------+-------------+
Ignoring the X-wing and XY-wing, there is a BUG+2. Either R3C1 is <4> (so R2C3 is <9>), or R6C7 is <9>. Either way, R2C7 is not <9>.

(Or, you can note that Dan's extended W-wing is still there.)

Keith
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Fri Jun 26, 2009 6:51 am    Post subject: Reply with quote
I am curious about the other one steppers, the only one I saw was the one in Dan's post.
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ttt



Joined: 06 Dec 2008
Posts: 42
Location: vietnam
PostPosted: Fri Jun 26, 2009 7:54 am    Post subject: Reply with quote
storm_norm wrote:
I am curious about the other one steppers, the only one I saw was the one in Dan's post.

Code:
 *--------------------------------------------------*
 |*34   5    1    | 8    7    9    |-346* 246  26   |
 | 2    8    49   | 1   *34   6    | 349* 7    5    |
 |*349  6    7    | 2   *34   5    | 8    14   19   |
 |----------------+----------------+----------------|
 | 8    3    6    | 59   159  4    | 2    15   7    |
 | 459  1    49   | 3    2    7    | 469  456  8    |
 | 459  7    2    | 6    15   8    | 149  3    19   |
 |----------------+----------------+----------------|
 | 6    2    3    | 59   59   1    | 7    8    4    |
 | 7    9    5    | 4    8    3    | 16   126  26   |
 | 1    4    8    | 7    6    2    | 5    9    3    |
 *--------------------------------------------------*

Perhaps, this one can do it... Very Happy. Look MUG(34)r123c157 => (6)r1c7=(9)r3c1/r2c7

(6)r1c7=(9)r3c1/r2c7-(9=4)r2c3-(4=3)r1c1 => r1c7<>3

ttt
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Fri Jun 26, 2009 11:51 am    Post subject: Reply with quote
storm_norm wrote:
I am curious about the other one steppers, the only one I saw was the one in Dan's post.
I made a slight error when I first did it. Anyway, there are Dan's solutions (I think either of his eliminations does it alone), my W-wing, and ttt's MUG.

Keith

Last edited by keith on Fri Jun 26, 2009 5:59 pm; edited 1 time in total
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wapati



Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.
PostPosted: Fri Jun 26, 2009 12:12 pm    Post subject: Reply with quote
Well, I like your W-wing but marked it this way. Smile

Code:
.---------------.---------------.---------------.
|*34   5    1   | 8    7    9   | 346  246  26  |
| 2    8    9-4 | 1   *34   6   | 349  7    5   |
|#349  6    7   | 2   #34   5   | 8    14   19  |
:---------------+---------------+---------------:
| 8    3    6   | 59   159  4   | 2    15   7   |
| 459  1    49  | 3    2    7   | 469  456  8   |
| 459  7    2   | 6    15   8   | 149  3    19  |
:---------------+---------------+---------------:
| 6    2    3   | 59   59   1   | 7    8    4   |
| 7    9    5   | 4    8    3   | 16   126  26  |
| 1    4    8   | 7    6    2   | 5    9    3   |
'---------------'---------------'---------------'
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