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VH(+/++): Set A Puzzle 25

 
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Mon Nov 10, 2008 2:01 am    Post subject: VH(+/++): Set A Puzzle 25 Reply with quote

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

Alert wrote:
Swordfish present but not by himself

Click to Play
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nataraj



Joined: 03 Aug 2007
Posts: 1029
Location: Vienna, Austria

PostPosted: Mon Nov 10, 2008 6:26 am    Post subject: Reply with quote

Let's make this a "no" puzzle, shall we?

After swordfish (3)
and x-wing(2) (which is not necessary, I think),
a generalized m-wing (3) r4c3=r8c2 (via 7 in row 7,box 1) )here:
Code:

+--------------------------+--------------------------+--------------------------+
| 3479    12479   8        | 6       139     1279     | 179     5       34       |
| 3479    6       24       | 12      5       179      | 179     8       34       |
| 5       1379    379      | 138     4       1789     | 179     2       6        |
+--------------------------+--------------------------+--------------------------+
| 1      -389     39*      | 5       6       389      | 4       7       2        |
| 6       2-3     5        | 4       7       23       | 8       9       1        |
| 4789    4789    24       | 128     19      189      | 6       3       5        |
+--------------------------+--------------------------+--------------------------+
| 379#    5       79#      | 17      13      4        | 2       6       8        |
| 2       37*     1        | 37      8       6        | 5       4       9        |
| 48      48      6        | 9       2       5        | 3       1       7        |
+--------------------------+--------------------------+--------------------------+
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Mon Nov 10, 2008 7:55 am    Post subject: Reply with quote

nataraj wrote:
Let's make this a "no" puzzle, shall we?

After swordfish (3)
and x-wing(2) (which is not necessary, I think),
a generalized m-wing (3) r4c3=r8c2 (via 7 in row 7,box 1) )

Okay.

FWIW: X-Wing, Swordfish, XY-Wing.
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nataraj



Joined: 03 Aug 2007
Posts: 1029
Location: Vienna, Austria

PostPosted: Mon Nov 10, 2008 5:55 pm    Post subject: Reply with quote

daj95376 wrote:
nataraj wrote:
Let's make this a "no" puzzle, shall we?

...

Okay.

FWIW: X-Wing, Swordfish, XY-Wing.


Ah, but there are no xy-wings in a "no" puzzle ... Laughing
___

Sorry, Danny, but I think it was you started the "no" series Smile
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Asellus



Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA

PostPosted: Mon Nov 10, 2008 9:26 pm    Post subject: Reply with quote

nataraj,

I believe your gM-Wing relies on <9> in r7. However, this, for me, is another case of a disguised ("mustachioed") XY-Wing.

To avoid the XY-Wing altogether, I was only able to find this AIC, via Medusa multi-coloring:
(4=3)r1c9 - (3)r1c5=(3-8)r3c4=(8-2)r6c4=(2)r6c3 - (2=4)r2c3; r1c23|r2c9<>4
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nataraj



Joined: 03 Aug 2007
Posts: 1029
Location: Vienna, Austria

PostPosted: Mon Nov 10, 2008 9:46 pm    Post subject: Reply with quote

Right, Asellus. I must admit it's not the first time it has happened to me. Must remember to double check for those xy-wings in disguise. Embarassed

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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Mon Nov 10, 2008 10:49 pm    Post subject: Reply with quote

nataraj wrote:
daj95376 wrote:
nataraj wrote:
Let's make this a "no" puzzle, shall we?

...

Okay.

FWIW: X-Wing, Swordfish, XY-Wing.


Ah, but there are no xy-wings in a "no" puzzle ... Laughing
___

Sorry, Danny, but I think it was you started the "no" series Smile

It should be me apologizing to you Exclamation

I thought you were complaining that the puzzle was too difficult and that it should not have been presented. I didn't realize that you'd taken the more difficult route of a No puzzle on purpose. That's why I showed the alternate solution. Sorry for my misunderstanding!

===== ===== =====

I should have informed the forum that not all of the VH puzzles could be solved as No puzzles. Back when I was submitting puzzles from Set A as No puzzles, I was manually selecting only those puzzles that I knew could be solved without relying on chains any more complex than W-Wing and M-Wing.
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keith



Joined: 19 Sep 2005
Posts: 3150
Location: near Detroit, Michigan, USA

PostPosted: Mon Nov 10, 2008 11:13 pm    Post subject: Reply with quote

Code:
+-------------------+-------------------+-------------------+
| 3479  12479 8     | 6     139   1279  | 179   5     34    |
| 3479  6     24a   | 12b   5     179   | 179   8     34    |
| 5     1379 37-9   |-138   4     1789  | 179   2     6     |
+-------------------+-------------------+-------------------+
| 1    -389   39e   | 5     6     389   | 4     7     2     |
| 6     23f   5     | 4     7     23    | 8     9     1     |
| 4789  4789  24g   |-128   19    189   | 6     3     5     |
+-------------------+-------------------+-------------------+
|3-79   5     79d   | 17c   13    4     | 2     6     8     |
| 2     37    1     | 37    8     6     | 5     4     9     |
| 48    48    6     | 9     2     5     | 3     1     7     |
+-------------------+-------------------+-------------------+

An AA-wing, perhaps?

Keith
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Mon Nov 10, 2008 11:25 pm    Post subject: Reply with quote

keith wrote:
An AA-wing, perhaps?

That is an impressive continuous loop through only bivalue cells!
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keith



Joined: 19 Sep 2005
Posts: 3150
Location: near Detroit, Michigan, USA

PostPosted: Mon Nov 10, 2008 11:34 pm    Post subject: Reply with quote

daj95376 wrote:
keith wrote:
An AA-wing, perhaps?

That is an impressive continuous loop through only bivalue cells!

Leaving still a (different) XY-wing as the path to the solution Crying or Very sad

I thought "AA" should be : "Acceptable to Asellus". Maybe it really means, this is driving me to drink. (Which is not a problem. I have a fine Cabernet.)

Keith Razz Razz
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Asellus



Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA

PostPosted: Tue Nov 11, 2008 4:57 am    Post subject: Reply with quote

Hey! That XY-Loop is WAY AA!

Being in Sonoma County, I am enjoying a nice Italian Valpolicella this evening. You know how it is... taking the local stuff for granted. (Only kidding.)

nataraj,

I LOVE those mustache glasses (Schnurrbartbrille)!
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nataraj



Joined: 03 Aug 2007
Posts: 1029
Location: Vienna, Austria

PostPosted: Tue Nov 11, 2008 7:10 pm    Post subject: Reply with quote

daj95376 wrote:
It should be me apologizing ...


No aplogy needed at all. There'll be plenty of small (and hopefully very few big) misunderstandings until we'll all get to know each other here on this great site.

Thanks for providing these great puzzles Very Happy
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nataraj



Joined: 03 Aug 2007
Posts: 1029
Location: Vienna, Austria

PostPosted: Tue Nov 11, 2008 7:16 pm    Post subject: Reply with quote

Asellus wrote:
I LOVE those mustache glasses (Schnurrbartbrille)!


Actually, it was your post
Asellus wrote:
By the way, I picture that mustache attached to a pair of those funny glasses. They don't fool me! I can still see that XY-Wing!


that suddenly helped me understand the meaning of "mustachioed xy-wing". I immediately pictured one of the Marx Brothers and did a google pic search "groucho marx glasses" ...

Oh, the blessings of the world wide web ...
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nataraj



Joined: 03 Aug 2007
Posts: 1029
Location: Vienna, Austria

PostPosted: Tue Nov 11, 2008 9:02 pm    Post subject: Reply with quote

Rioja tonight.
Vendimia 2005.

Mmmmmhhhhhhhhhhhhh.

No kidding Wink
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