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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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 Posted: Thu Oct 22, 2009 1:59 am Post subject: Oct 22 VH |
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The Oct 22 VH has many paths; a one-two, with an alternate two; or a single haymaker.
Solutions: X-wing (6) followed by an xy-wing (178), or a Bug+1 which makes R6C7 = 8. Or an xy-chain R8C5 to R9C7 with a 9 pincer does it in one step.
Early Earl |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Thu Oct 22, 2009 3:52 am Post subject: |
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| I missed something, as I used an X-Wing and two kites before the puzzle-ending XY-Wing. |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Thu Oct 22, 2009 12:09 pm Post subject: Re: Oct 22 VH |
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| Earl wrote: | | xy-chain R8C5 to R9C7 with a 9 pincer does it in one step |
Beautiful!  |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Thu Oct 22, 2009 5:51 pm Post subject: |
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After basics: | Code: | +-------------+-------------+-------------+
| 67 67 2 | 3 1 8 | 4 9 5 |
| 5 8 4 | 9 7 6 | 1 3 2 |
| 3 1 9 | 2 4 5 | 7 8 6 |
+-------------+-------------+-------------+
| 1 9 68 | 7 26 4 | 28 5 3 |
| 2 3 5 | 1 8 9 | 6 7 4 |
| 67 4 678@| 56 256 3 | 289 1 89% |
+-------------+-------------+-------------+
| 9 67 167#| 68 3 2 | 5 4 -18 |
| 8 5 -16 | 4 69 7 | 3 2 19&|
| 4 2 3 | 58 59 1 | 89 6 7 |
+-------------+-------------+-------------+ |
Notice the DP 67 in chute 1. Either # is 1 and / or @ is 8. Forming a pseudocell 18 that makes an XY-wing with %&, eliminating 1 as shown. Puzzle is solved. (Makes my day!)
(If you stare at C3, you see that one of the 2 DP cells in C3 must be 7. Therefore neither can be 6. That does not solve the puzzle.)
Keith |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Thu Oct 22, 2009 6:32 pm Post subject: |
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| keith wrote: | After basics: | Code: | +-------------+-------------+-------------+
| 67 67 2 | 3 1 8 | 4 9 5 |
| 5 8 4 | 9 7 6 | 1 3 2 |
| 3 1 9 | 2 4 5 | 7 8 6 |
+-------------+-------------+-------------+
| 1 9 68 | 7 26 4 | 28 5 3 |
| 2 3 5 | 1 8 9 | 6 7 4 |
| 67 4 678@| 56 256 3 | 289 1 89% |
+-------------+-------------+-------------+
| 9 67 167#| 68 3 2 | 5 4 -18 |
| 8 5 -16 | 4 69 7 | 3 2 19&|
| 4 2 3 | 58 59 1 | 89 6 7 |
+-------------+-------------+-------------+ |
Notice the DP 67 in chute 1. Either # is 1 and / or @ is 8. Forming a pseudocell 18 that makes an XY-wing with %&, eliminating 1 as shown. Puzzle is solved. (Makes my day!)
(If you stare at C3, you see that one of the 2 DP cells in C3 must be 7. Therefore neither can be 6. That does not solve the puzzle.)
Keith |
nice one |
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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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| Posted: Thu Oct 22, 2009 6:44 pm Post subject: |
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| No chains with pincers or DPs with pseudocells for me - I'm not into pain - just an x-wing and a Bug. |
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eddieg
Joined: 12 Jan 2006
Posts: 47
Location: San Diego, CA USA
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| Posted: Thu Oct 22, 2009 8:02 pm Post subject: |
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| I still got it. I haven't done a puzzle in a long time. Happened to stop on in and found a VH puzzle, and about 7 minutes later, done. Wooohooo. |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Fri Oct 23, 2009 1:52 pm Post subject: |
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| keith wrote: | After basics: | Code: | +-------------+-------------+-------------+
| 67 67 2 | 3 1 8 | 4 9 5 |
| 5 8 4 | 9 7 6 | 1 3 2 |
| 3 1 9 | 2 4 5 | 7 8 6 |
+-------------+-------------+-------------+
| 1 9 68 | 7 26 4 | 28 5 3 |
| 2 3 5 | 1 8 9 | 6 7 4 |
| 67 4 678@| 56 256 3 | 289 1 89% |
+-------------+-------------+-------------+
| 9 67 167#| 68 3 2 | 5 4 -18 |
| 8 5 -16 | 4 69 7 | 3 2 19&|
| 4 2 3 | 58 59 1 | 89 6 7 |
+-------------+-------------+-------------+ |
Notice the DP 67 in chute 1. Either # is 1 and / or @ is 8. Forming a pseudocell 18 that makes an XY-wing with %&, eliminating 1 as shown. Puzzle is solved. (Makes my day!)
(If you stare at C3, you see that one of the 2 DP cells in C3 must be 7. Therefore neither can be 6. That does not solve the puzzle.)
Keith |
Two good moves in one step: spotting the 6-cell DP and then using the pseudocell in a xy-wing. Great and Great.
Ted |
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Wendy W
Joined: 04 Feb 2008
Posts: 144
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| Posted: Sat Oct 24, 2009 7:50 pm Post subject: |
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Hey Early Earl,
R6C7 is a 2, not an 8, isn't it? |
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