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March 26 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania

PostPosted: Thu Mar 25, 2010 10:33 pm    Post subject: March 26 VH Reply with quote

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

PostPosted: Fri Mar 26, 2010 2:34 am    Post subject: Reply with quote

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

PostPosted: Fri Mar 26, 2010 4:54 am    Post subject: Reply with quote

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

PostPosted: Fri Mar 26, 2010 11:09 am    Post subject: Reply with quote

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

PostPosted: Sat Mar 27, 2010 12:11 am    Post subject: Reply with quote

Last as always...and I used Clement's xy wing.
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arjun



Joined: 28 Sep 2009
Posts: 16

PostPosted: Fri Apr 16, 2010 2:05 pm    Post subject: Reply with quote

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

PostPosted: Fri Apr 16, 2010 2:47 pm    Post subject: Reply with quote

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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