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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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 Posted: Wed Dec 10, 2008 3:00 am Post subject: Dec 10 VH |
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Two steps: x-wing (1), xy-wing (269).
Any one-step solutions?
Earl |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed Dec 10, 2008 4:49 am Post subject: |
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| Quote: | | Any one-step solutions? |
Not from me. I obviously missed something, or a lot of things, since it took me six steps. So I erased it, did it again and it took me seven!!  |
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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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| Posted: Wed Dec 10, 2008 2:21 pm Post subject: |
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| Actually, I used the x-wing(s) on <1> and an ER on <4> before finding the <269> xy-wing. So I started again and just used the xy-wing - and found that was all that was needed. Seven steps indeed!! |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Wed Dec 10, 2008 3:32 pm Post subject: |
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| cgordon wrote: | | So I started again and just used the xy-wing - and found that was all that was needed. |
After basics, I had this code: | Code: |
*--------------------------------------------------*
| 1 5 49 | 6 79 3 | 478 2 478 |
| 8 49 6 | 5 79 2 | 347 1 347 |
| 7 3 2 | 4 8 1 | 5 6 9 |
|----------------+----------------+----------------|
| 2 8 179 | 19 4 5 | 36 79 36 |
| 4 69 5 | 3 26 7 | 1 89 28 |
| 3 169 179 | 129 126 8 | 27 4 5 |
|----------------+----------------+----------------|
| 9 2 18 | 178 3 4 | 678 5 678 |
| 5 14 3 | 78 12 6 | 9 78 24 |
| 6 7 48 | 28 5 9 | 24 3 1 |
*--------------------------------------------------* |
My solution was exactly like that posted by Earl. The x-wing <1> to eliminate <1> in r6c34 which opens up the xy-wing <269> with pivot <27> at r6c7 and pincers <79> at r4c8 and <29> at r6c4 to solve the puzzle.
How did you eliminate the <1> in r6c4 or did you use a different xy-wing <269>?
Ted |
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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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| Posted: Wed Dec 10, 2008 4:17 pm Post subject: |
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| Quote: | | How did you eliminate the <1> in r6c4 |
Well - there wasn't a <1> there after I rubbed out the first attempt and did it again. The rubber (or eraser to you guys) must have slipped. |
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Wendy W
Joined: 04 Feb 2008
Posts: 144
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| Posted: Thu Dec 11, 2008 12:26 am Post subject: |
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I solved it the same way everyone else did but didn't count the # of steps!
I enjoyed today's puzzle more than other VHs recently because it didn't just fall apart like some do -- it took some methodical work. But not too much! |
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crunched
Joined: 05 Feb 2008
Posts: 168
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| Posted: Thu Dec 11, 2008 6:39 am Post subject: |
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Quote:
...which opens up the xy-wing <269> with pivot <27> at r6c7.
I am puzzled with others saying that the xy wing was <269>. Can a <269> xy wing pivot on something with a 7 in it?
I am thinking that the xy-wing should be <279>. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Thu Dec 11, 2008 10:31 am Post subject: |
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| Ted wrote: | My solution was exactly like that posted by Earl. The x-wing <1> to eliminate <1> in r6c34 which opens up the xy-wing <269> with pivot <27> at r6c7 and pincers <79> at r4c8 and <29> at r6c4 to solve the puzzle.
How did you eliminate the <1> in r6c4 or did you use a different xy-wing <269>?
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Ted: I'll have some of what you're drinking!!!
| Code: | after X-Wing in <1>: Earl's <269> XY-Wing
*--------------------------------------------------*
| 1 5 49 | 6 79 3 | 478 2 478 |
| 8 49 6 | 5 79 2 | 347 1 347 |
| 7 3 2 | 4 8 1 | 5 6 9 |
|----------------+----------------+----------------|
| 2 8 179 | 19 4 5 | 36 79 36 |
| 4 *69 5 | 3 *26 7 | 1 89 28 |
| 3 16-9 7-9 |*29 126 8 | 27 4 5 |
|----------------+----------------+----------------|
| 9 2 18 | 178 3 4 | 678 5 678 |
| 5 14 3 | 78 12 6 | 9 78 24 |
| 6 7 48 | 28 5 9 | 24 3 1 |
*--------------------------------------------------*
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| Code: | after X-Wing in <1>: Ted's <279> XY-Wing
*--------------------------------------------------*
| 1 5 49 | 6 79 3 | 478 2 478 |
| 8 49 6 | 5 79 2 | 347 1 347 |
| 7 3 2 | 4 8 1 | 5 6 9 |
|----------------+----------------+----------------|
| 2 8 179 | 1-9 4 5 | 36 *79 36 |
| 4 69 5 | 3 26 7 | 1 89 28 |
| 3 169 79 |*29 126 8 |*27 4 5 |
|----------------+----------------+----------------|
| 9 2 18 | 178 3 4 | 678 5 678 |
| 5 14 3 | 78 12 6 | 9 78 24 |
| 6 7 48 | 28 5 9 | 24 3 1 |
*--------------------------------------------------*
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sudocraz
Joined: 28 Apr 2008
Posts: 53
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| Posted: Fri Dec 12, 2008 2:08 am Post subject: |
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I thought that it was a fun puzzle. We solved it with one x-wing and the 269 xy-wing. For my husband and I, these puzzles have been fun lately. Good practice too with the xy-wings.
There have been more VH puzzles than usual in the last week or so.  |
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crunched
Joined: 05 Feb 2008
Posts: 168
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| Posted: Fri Dec 12, 2008 4:20 am Post subject: |
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| Aha! There is a 269 xy wing and a 279 xy wing. I never saw the 269 wing. Either solves the puzzle. |
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