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VH: Set A Puzzle 20

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sat Nov 08, 2008 6:09 pm    Post subject: VH: Set A Puzzle 20 Reply with quote
Code:
 +-----------------------+
 | 8 . 3 | . 6 . | . 1 . |
 | . . 6 | . 3 . | . 7 . |
 | 7 9 1 | 8 . 2 | . 3 . |
 |-------+-------+-------|
 | . . 5 | 3 . . | . 8 7 |
 | 3 7 . | . . 8 | . . . |
 | . . 8 | . 7 6 | . . . |
 |-------+-------+-------|
 | . . . | . . . | . . . |
 | 5 4 7 | 6 . . | . . 3 |
 | . . . | 7 . . | . 5 8 |
 +-----------------------+
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Nov 08, 2008 10:55 pm    Post subject: Reply with quote
I solved this with basics. Usually when that happens, someone says, "no way, you made a lucky mistake." OK, fire away!!
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Sat Nov 08, 2008 11:14 pm    Post subject: Reply with quote
Marty R. wrote:
I solved this with basics. Usually when that happens, someone says, "no way, you made a lucky mistake." OK, fire away!!

I got here with basics. What now?
Code:
 *--------------------------------------------------------------------*
 | 8      5      3      | 9      6      7      | 24     1      24     |
 | 4      2      6      | 1      3      5      | 8      7      9      |
 | 7      9      1      | 8      4      2      | 56     3      56     |
 |----------------------+----------------------+----------------------|
 | 29     6      5      | 3      129    149    | 1249   8      7      |
 | 3      7      4      | 25     1259   8      | 12569  269    1256   |
 | 29     1      8      | 245    7      6      | 3      249    245    |
 |----------------------+----------------------+----------------------|
 | 16     8      29     | 245    1259   3      | 7      469    146    |
 | 5      4      7      | 6      8      19     | 129    29     3      |
 | 16     3      29     | 7      129    149    | 1469   5      8      |
 *--------------------------------------------------------------------*
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sun Nov 09, 2008 12:15 am    Post subject: Reply with quote
Quote:
I got here with basics. What now?

Beats me. Maybe I'll try it again when I get a chance.
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Asellus



Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA
PostPosted: Sun Nov 09, 2008 12:52 am    Post subject: Reply with quote
It can be solved with an X-Wing, Skyscraper, and XY-Wing. But, if you forgo the XY-Wing, it is much tougher. I used two URs, a Sue de Coq, a W-Wing and a BUG+3! Don't know if they were all necessary, though.

[Edit to add...] They weren't all necessary. Avoiding XY(Z) Wings/Chains, I found: X-Wing, Skyscraper, Sue de Coq, W-Wing, M-Wing (generalized).
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sun Nov 09, 2008 3:18 am    Post subject: Reply with quote
Asellus wrote:
But, if you forgo the XY-Wing, it is much tougher.

Avoiding XY(Z) Wings/Chains, I found: X-Wing, Skyscraper, Sue de Coq, W-Wing, M-Wing (generalized).

Asellus: Impressive effort! You could have skipped those in orange above.

Code:
gM-Wing: [r7c8] [r9c7] [r9c6] [r8c6] => [r8c7]<>9

This puzzle has a couple of twists. If you missed the Skyscraper, then you would have run into an XYZ-Wing instead of the XY-Wing. It was perfect as a No puzzle!
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Asellus



Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA
PostPosted: Sun Nov 09, 2008 4:36 am    Post subject: Reply with quote
Danny wrote:
You could have skipped those in orange above.

Hah! Didn't see that gMW. Mine, after the orange steps, was in r4c7, r4c6, r9c6, r8c6 for the same elimination. I guess I was seduced by Sue:
Code:
+-----------+----------------+-----------------+
| 8   5  3  | 9    6     7   | 2     1    4    |
| 4   2  6  | 1    3     5   | 8     7    9    |
| 7   9  1  | 8    4     2   | 56    3    56   |
+-----------+----------------+-----------------+
| 29  6  5  | 3    129   14  |@149   8    7    |
| 3   7  4  |@25  #19-25 8   |@19/5  6   @1/25 |
| 29  1  8  | 245  7     6   | 3    @49   25   |
+-----------+----------------+-----------------+
| 16  8  29 | 245  25    3   | 7     49   16   |
| 5   4  7  | 6    8     19  | 19    2    3    |
| 16  3  29 | 7    12    149 | 1469  5    8    |
+-----------+----------------+-----------------+
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