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prakash
Joined: 02 Jan 2008
Posts: 67
Location: New Jersey, USA
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 Posted: Sat Oct 30, 2010 8:36 pm Post subject: Oct 31 VH |
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| A single stepper using a finned X wing on 8 in r17c59 clears r7c7. |
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Clement
Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania
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| Posted: Sat Oct 30, 2010 10:34 pm Post subject: Oct 31 VH |
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W-Wing 38 strong link 8 in col 7 eliminating 3 in r7c9 solves it.
There is also an XY-Wing 89 39 38 removing 8 in r7c5 which does it as well. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun Oct 31, 2010 12:27 am Post subject: |
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| I saw five moves, three of which were mentioned above. The other two are BUG+2 and Skyscraper (8). |
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kuskey
Joined: 10 Dec 2008
Posts: 141
Location: Pembroke, NH
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| Posted: Sun Oct 31, 2010 1:43 am Post subject: 31 Oct VH |
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Although I haven't yet a total grasp of finned x-wings and w-wings, I do believe we can add three more moves due to variants. The 389 xy-wing can be played with the pivot at r7c7 eliminating 3 at r7c9 and r8c4. The finned x-wing on 8 can be played in columns with the fin at r8c9 eliminating 8 in r7c7. The w-wing on 38 can be played using the third 38 at r8c4 and the strong link on 3 in row 7 tp eliminate 8 in r8c9.
Marty, is the skyscraper related to the finned x-wings? |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun Oct 31, 2010 3:26 am Post subject: |
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| Quote: | | Marty, is the skyscraper related to the finned x-wings? |
I'm no theoretician, so as far as I'm concerned they're two separate moves, but maybe they're related in a way I'm unaware of. |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Mon Nov 01, 2010 5:35 pm Post subject: |
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After basics: | Code: | +-------------+-------------+-------------+
| 9 6 1 | 2 48 7 | 5 34 38 |
| 3 7 4 | 68 1 5 | 89 69 2 |
| 2 5 8 | 46 9 3 | 1 46 7 |
+-------------+-------------+-------------+
| 1 8 9 | 34 34 2 | 6 7 5 |
| 7 2 5 | 9 6 8 | 3 1 4 |
| 6 4 3 | 5 7 1 | 2 8 9 |
+-------------+-------------+-------------+
| 5 19 6 | 7 38 4 | 89 2 138 |
| 4 19 2 | 38 5 6 | 7 39 138 |
| 8 3 7 | 1 2 9 | 4 5 6 |
+-------------+-------------+-------------+ |
There are two XY-wings: -389 or 3-89.
Keith |
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