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tlanglet
Joined: 17 Oct 2007 Posts: 2468 Location: Northern California Foothills
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Posted: Fri Sep 26, 2008 10:26 pm Post subject: Vanhegan Fiendish Sept 26 |
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Here is a VH puzzle that provided me numerous "useless" solutions before I overcame it.
Code: |
*-----------*
|7..|642|.9.|
|48.|...|6..|
|..2|.9.|4..|
|---+---+---|
|.9.|4.3|...|
|5..|...|..1|
|...|1.5|.4.|
|---+---+---|
|..6|.3.|1..|
|..4|...|.25|
|.1.|284|..6|
*-----------* |
Hope you enjoy ......
Ted |
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daj95376
Joined: 23 Aug 2008 Posts: 3854
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Posted: Sat Sep 27, 2008 5:22 am Post subject: |
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Since you didn't indicate a solution, I have no idea if I'm reinventing the wheel. Also, I'm no good at DPs, so this is probably wrong anyway.
(789) DP in [c46] forces [r3c6]=1
I have two alternate solutions if this one is incorrect or already taken. |
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nataraj
Joined: 03 Aug 2007 Posts: 1048 Location: near Vienna, Austria
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Posted: Sat Sep 27, 2008 6:36 am Post subject: |
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After basics
Code: |
+--------------------------+--------------------------+--------------------------+
| 7 35 1 | 6 4 2 | 58 9 38 |
| 4 8 9 | 3 5 17 | 6 1-7 2 |
| 36# 356 2 | 78 9 178 | 4 15-7 37* |
+--------------------------+--------------------------+--------------------------+
| 1 9 78 | 4 26 3 | 25 56 78 |
| 5 4 37 | 89 26 89 | 237 367 1 |
| 26 26 38 | 1 7 5 | 38 4 9 |
+--------------------------+--------------------------+--------------------------+
| 29 27 6 | 5 3 79 | 1 8 4 |
| 8 37 4 | 79 1 6 | 39 2 5 |
| 39# 1 5 | 2 8 4 | 379 37* 6 |
+--------------------------+--------------------------+--------------------------+
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there is a w-wing (7) r3c9=r9c8 via (3) r3c1=r9c1; r23c8<>7 |
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Asellus
Joined: 05 Jun 2007 Posts: 865 Location: Sonoma County, CA, USA
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Posted: Sat Sep 27, 2008 10:00 am Post subject: |
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That c24 789 pattern is not a DP since the 79 pairs are not in the same row. So, the <1> placement is not valid. |
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tlanglet
Joined: 17 Oct 2007 Posts: 2468 Location: Northern California Foothills
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Posted: Sat Sep 27, 2008 12:12 pm Post subject: |
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I spotted the UR <17> in r23c68 with a x-wing <1> overlay that deleted <7> in r3c68. This then opened up a "useless" xy-wing <379> with pivot in r8c7, but the pincer at r8c4 can be transported to r2c6 thereby removing the <7> from r2c8 and completing the puzzle.
Ted |
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