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Clement
Joined: 24 Apr 2006 Posts: 1111 Location: Dar es Salaam Tanzania
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Posted: Thu Mar 25, 2010 10:33 pm Post subject: March 26 VH |
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XY-Wing 12 17 27 eliminating 2 in r9c4 solves the puzzle.
Also
A W-Wing 27 in r39c56 connected by a strong link in 7 in r6c56 eliminating 2 in r3c5 also solves it in one step. |
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tlanglet
Joined: 17 Oct 2007 Posts: 2468 Location: Northern California Foothills
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Posted: Fri Mar 26, 2010 2:34 am Post subject: |
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A variation on the standard one step wing solution is a two stepper; a xyz-wing with a transport and a BUG+1.
xyz-wing 127 in r3c5
(1)r3c5 - (1=7)r6c5 - r6c6 = r3c6; r2c4<>7
(2)r3c5 - (2=7)r3c6; r2c4<>7
(7)r3c5; r2c4<>7
BUG+1 forces r3c5=7
Ted |
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Marty R.
Joined: 12 Feb 2006 Posts: 5770 Location: Rochester, NY, USA
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Posted: Fri Mar 26, 2010 4:54 am Post subject: |
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I used a W-Wing on 17 plus a pincer transport. |
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peterj
Joined: 26 Mar 2010 Posts: 974 Location: London, UK
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Posted: Fri Mar 26, 2010 11:09 am Post subject: |
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BUG+2 Either r2c4 or r3c5 must be 7 => r3c6 <> 7
(I'm new here - but enjoying these puzzles) |
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Wendy W
Joined: 04 Feb 2008 Posts: 144
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Posted: Sat Mar 27, 2010 12:11 am Post subject: |
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Last as always...and I used Clement's xy wing. |
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arjun
Joined: 28 Sep 2009 Posts: 16
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Posted: Fri Apr 16, 2010 2:05 pm Post subject: |
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I am stuck here. I am pretty sure I missed a basic step. Any help is appreciated
Code: |
+---------+----------------+-------------+
| 2 5 8 | 67 467 9 | 467 3 1 |
| 9 17 3 | 1567 14567 8 | 467 567 2 |
| 6 17 4 | 3 1257 27 | 9 57 8 |
+---------+----------------+-------------+
| 1 9 2 | 68 468 5 | 3 67 467 |
| 7 48 5 | 126 3 246 | 18 9 46 |
| 3 48 6 | 9 147 47 | 18 2 5 |
+---------+----------------+-------------+
| 58 6 7 | 58 9 1 | 2 4 3 |
| 58 2 9 | 4 5678 3 | 567 1 67 |
| 4 3 1 | 2567 2567 267 | 567 8 9 |
+---------+----------------+-------------+
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arjun
Joined: 28 Sep 2009 Posts: 16
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Posted: Fri Apr 16, 2010 2:47 pm Post subject: |
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Never mind, I solved it.
arjun wrote: | I am stuck here. I am pretty sure I missed a basic step. Any help is appreciated
Code: |
+---------+----------------+-------------+
| 2 5 8 | 67 467 9 | 467 3 1 |
| 9 17 3 | 1567 14567 8 | 467 567 2 |
| 6 17 4 | 3 1257 27 | 9 57 8 |
+---------+----------------+-------------+
| 1 9 2 | 68 468 5 | 3 67 467 |
| 7 48 5 | 126 3 246 | 18 9 46 |
| 3 48 6 | 9 147 47 | 18 2 5 |
+---------+----------------+-------------+
| 58 6 7 | 58 9 1 | 2 4 3 |
| 58 2 9 | 4 5678 3 | 567 1 67 |
| 4 3 1 | 2567 2567 267 | 567 8 9 |
+---------+----------------+-------------+
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