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Nov 21 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania

PostPosted: Thu Nov 20, 2014 10:40 pm    Post subject: Nov 21 VH Reply with quote

Code:

+-------------+-----------+------------+
| 289  259 4  | 6   3  15 | *12 *128 7   |
| 23   6   1  | 7   8  9  | 5  4   23  |
| 7    35  58 | 4   2  15 | 6  138 9   |
+-------------+-----------+------------+
| 49   1   2  | 8   49 6  | 3  7   5   |
| 3469 39  69 | 5   49 7  | *12 *12  8   |
| 5    8   7  | 23  1  23 | 4  9   6   |
+-------------+-----------+------------+
| 129  259 59 | 123 6  8  | 7  23  4   |
| 12   7   3  | 9   5  4  | 8  6   12  |
| 68   4   68 | 123 7  23 | 9  5   123 |
+-------------+-----------+------------+
Type 1 UR 12 in r15c78; r1c8=8; stte
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roaa



Joined: 18 Apr 2009
Posts: 112
Location: Sweden

PostPosted: Fri Nov 21, 2014 9:53 am    Post subject: Nov 21 VH Reply with quote

An X-wing on 2:s, followed by an XY-wing 589.
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George Woods



Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK

PostPosted: Fri Nov 21, 2014 8:39 pm    Post subject: almost an xy wing! Reply with quote

If r7c2 is not 9 then the xy wing 235 pivoting atr3c2 leads to a 2 at the aforesaid r7c2 which is thegore either 9 or 2 and not 5 hence r7c3 is 5 and that is that
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dongrave



Joined: 06 Mar 2014
Posts: 568

PostPosted: Fri Nov 21, 2014 10:15 pm    Post subject: Reply with quote

I see that there's also a type 1 UR 23 in r69c46 which forces r9c4=1 which also solves it - BUT ever since Marty told me that every VH on this site can be solved with just X, XY, or XYZ wings, I always look for that solution too (which turned out in this case to be roaa's solution).
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