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Jun 21 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 664
Location: Dar es Salaam Tanzania

PostPosted: Mon Jun 20, 2011 11:13 pm    Post subject: Jun 21 VH Reply with quote

Three XY-Wings:-
XY-Wing 57 37 35 pivoted in r1c2 sets r89c3<>5 followed by
XY-wing 35 57 37 pivoted in r9c2 sets r1c1<>3 followed by
XY-Wing 13 15 35 pivoted in r9c8 sets r6c9<>3.
Any one with a single steper?
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prakash



Joined: 02 Jan 2008
Posts: 67
Location: New Jersey, USA

PostPosted: Wed Jun 22, 2011 12:05 am    Post subject: Reply with quote

Two Sashimi X wing (skyscraper) in 3 and in 5 solves the puzzle. Still looking for the single stepper.
-PJ
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kragzy



Joined: 01 May 2007
Posts: 112
Location: Australia

PostPosted: Wed Jun 22, 2011 12:51 am    Post subject: Reply with quote

I must be missing something here. I saw the first two XY wings mentioned by Clement, which gave me the following grid.

[code]
+--------------+----------+------------------+
| 17 37 6 | 89 24 5 | 1349 1237 134789 |
| 157 9 8 | 6 24 3 | 145 127 147 |
| 2 4 35 | 89 7 1 | 359 6 389 |
+--------------+----------+------------------+
| 579 1 2 | 4 3 8 | 6 57 579 |
| 4 8 39 | 5 6 7 | 139 13 2 |
| 6 357 357 | 2 1 9 | 8 4 357 |
+--------------+----------+------------------+
| 39 6 1349 | 7 5 2 | 134 8 134 |
| 35 2 34 | 1 8 46 | 7 9 3456 |
| 8 57 147 | 3 9 46 | 2 15 1456 |
+--------------+----------+------------------+

I presume the third XY wing depends on R8C9 being 35. How do I get rid of the 4 and 6? I'm sure it's obvious to all (but me!).

Thanks
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kragzy



Joined: 01 May 2007
Posts: 112
Location: Australia

PostPosted: Wed Jun 22, 2011 12:51 am    Post subject: Reply with quote

Sorry, I'll try copying the grid again.

Code:

+--------------+----------+------------------+
| 17  37  6    | 89 24 5  | 1349 1237 134789 |
| 157 9   8    | 6  24 3  | 145  127  147    |
| 2   4   35   | 89 7  1  | 359  6    389    |
+--------------+----------+------------------+
| 579 1   2    | 4  3  8  | 6    57   579    |
| 4   8   39   | 5  6  7  | 139  13   2      |
| 6   357 357  | 2  1  9  | 8    4    357    |
+--------------+----------+------------------+
| 39  6   1349 | 7  5  2  | 134  8    134    |
| 35  2   34   | 1  8  46 | 7    9    3456   |
| 8   57  147  | 3  9  46 | 2    15   1456   |
+--------------+----------+------------------+

Play this puzzle online at the Daily Sudoku site
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Marty R.



Joined: 12 Feb 2006
Posts: 5160
Location: Rochester, NY, USA

PostPosted: Wed Jun 22, 2011 1:23 am    Post subject: Reply with quote

kragzy wrote:
Sorry, I'll try copying the grid again.

Code:

+--------------+----------+------------------+
| 17  37  6    | 89 24 5  | 1349 1237 134789 |
| 157 9   8    | 6  24 3  | 145  127  147    |
| 2   4   35   | 89 7  1  | 359  6    389    |
+--------------+----------+------------------+
| 579 1   2    | 4  3  8  | 6    57   579    |
| 4   8   39   | 5  6  7  | 139  13   2      |
| 6   357 357  | 2  1  9  | 8    4    357    |
+--------------+----------+------------------+
| 39  6   1349 | 7  5  2  | 134  8    134    |
| 35  2   34   | 1  8  46 | 7    9    3456   |
| 8   57  147  | 3  9  46 | 2    15   1456   |
+--------------+----------+------------------+

Play this puzzle online at the Daily Sudoku site

You need to take care of those locked 3s in c1.
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kragzy



Joined: 01 May 2007
Posts: 112
Location: Australia

PostPosted: Wed Jun 22, 2011 1:29 am    Post subject: Reply with quote

Ahhhhhhhhhhhhhhhhhhhhhhh.

Thanks Marty
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cgordon



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

PostPosted: Wed Jun 22, 2011 2:01 pm    Post subject: Reply with quote

For a wingless two-step solution, I used a Type 4 UR (89) and an ER on 5.
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