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April 8 VH

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS

PostPosted: Wed Apr 08, 2009 2:45 am    Post subject: April 8 VH Reply with quote

Lots of multiple paths home. Also a direct route with that old reliable, the xy-wing.

Early Earl
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Marty R.



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

PostPosted: Wed Apr 08, 2009 3:47 am    Post subject: Reply with quote

I wanted to see if there was anything there with W-Wings, and there was. It eliminated nothing but a pincer transport did it, essentially doing the same thing as the XY-Wing. There's also a three-box DP in boxes 789, but I don't think that took things very far.
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cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada

PostPosted: Wed Apr 08, 2009 11:34 am    Post subject: Reply with quote

There's a skyscraper on <7> but I don't see how to eschew the xy wings -of which I see at least two.
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gindaani



Joined: 06 Mar 2009
Posts: 79

PostPosted: Wed Apr 08, 2009 5:11 pm    Post subject: Reply with quote

The 458 xyz-wing jumped out at me before I was even done with basics. It solves the puzzle in one step. The 158 xy-wing is another 1 stepper.
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chesterdad



Joined: 06 Apr 2009
Posts: 6

PostPosted: Wed Apr 08, 2009 9:28 pm    Post subject: Reply with quote

With apologies to Norm and the others trying to help me grasp this xy wing stuff...

I am still missing something basic. Here is as far as I was able to get:
3 | 4 | 9 | 6 | 7 | 15 | 15 | 8 | 2
2 | 1 | 57 | 3 | 458 | 458 | 456 | 9 |4567
57 | 6 | 8 | 49 |1459 | 2 | 3 | 17 | 457
9 | 2 | 1 | 8 | 3 | 7 | 45 | 6 | 45
8 | 5 | 4 | 1 | 2 | 6 | 7 | 3 | 9
6 | 7 | 3 | 49 | 459 | 45 | 8 | 2 | 1
17 | 3 | 2 | 5 | 168 | 18 | 9 | 4 | 67
1457 | 8 | 567| 27 | 146 | 9 | 126 | 17 | 3
147 | 9 | 67 | 27 | 146 | 3 | 126 | 5 | 8

Is there one of the XY wings between r1c6 {15}, r2c3 {57}, and r3c8 {17}? If this is one, what does it tell me to do next?

I appreciate your patience.

Thanks!

(Edited by Marty to include grid).

Code:

+------------+-------------+-------------+
| 3    4 9   | 6  7    15  | 15  8  2    |
| 2    1 57  | 3  458  458 | 456 9  4567 |
| 57   6 8   | 49 1459 2   | 3   17 457  |
+------------+-------------+-------------+
| 9    2 1   | 8  3    7   | 45  6  45   |
| 8    5 4   | 1  2    6   | 7   3  9    |
| 6    7 3   | 49 459  45  | 8   2  1    |
+------------+-------------+-------------+
| 17   3 2   | 5  168  18  | 9   4  67   |
| 1457 8 567 | 27 146  9   | 126 17 3    |
| 147  9 67  | 27 146  3   | 126 5  8    |
+------------+-------------+-------------+

Play this puzzle online at the Daily Sudoku site
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Louise56



Joined: 21 Sep 2005
Posts: 94
Location: El Cajon, California USA

PostPosted: Thu Apr 09, 2009 3:04 am    Post subject: April 8 VH Reply with quote

Chesterdad,

I was exactly where you were in the puzzle. In box 8 there is a pointing pair of 4's that will eliminate the 4's in c5, boxes 2 & 5.

Now you will have a 15 pair in box 2 that is part of a 158 wing (along with the 58 pair in box 2 and the 18 pair in box Cool. The 15 pair will be either a 1 or a 5 both of which will eliminate the 8 in r2c6. This will make r2c5 an 8. That should solve the puzzle for you.

I have a hard time finding the wings and usually end up reading this board to figure them out.
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Louise56



Joined: 21 Sep 2005
Posts: 94
Location: El Cajon, California USA

PostPosted: Thu Apr 09, 2009 3:06 am    Post subject: Reply with quote

Somehow the guy with the sunglasses ended up in my post. It's supposed to read "the 18 pair in box 8."
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Marty R.



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

PostPosted: Thu Apr 09, 2009 3:28 am    Post subject: Reply with quote

Louise56 wrote:
Somehow the guy with the sunglasses ended up in my post. It's supposed to read "the 18 pair in box 8."

Sometimes combinations of characters for smileys end up like in your post. To prevent, check the disable smilies option under the message box.
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Thu Apr 09, 2009 5:45 am    Post subject: Reply with quote

Louise56 said:
Quote:
This will make r2c5 an 8.

and r7c6 will be an 8.
Cool
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chesterdad



Joined: 06 Apr 2009
Posts: 6

PostPosted: Thu Apr 09, 2009 4:33 pm    Post subject: Reply with quote

Thanks Loiuse!

You ar correct, that 158 did solve the puzzle for me. Thanks for taking the time to explain it to me.

I am getting closer team! Thanks for your patience with me.
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swando



Joined: 09 Mar 2009
Posts: 17
Location: Surrey, BC. Canada

PostPosted: Thu Apr 09, 2009 7:55 pm    Post subject: Reply with quote

xy wing on 178 made it easy
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Louise56



Joined: 21 Sep 2005
Posts: 94
Location: El Cajon, California USA

PostPosted: Fri Apr 10, 2009 12:03 am    Post subject: Reply with quote

Swando,

Where is the 178 wing? Can I see it on Chesterdad's grid?
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