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May 9 VH

 
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dizzy dave



Joined: 02 Apr 2012
Posts: 5

PostPosted: Sat May 10, 2014 9:57 am    Post subject: May 9 VH Reply with quote

+------------------+---------------+-----------------+
| 179 45789 14578 | 1489 6 2 | 4578 1478 3 |
| 179 2 14578 | 1489 3 1458 | 6 1478 145 |
| 6 3 1458 | 148 158 7 | 2458 1248 9 |
+------------------+---------------+-----------------+
| 279 4579 2457 | 248 58 3 | 1 2489 6 |
| 8 45 12345 | 1246 9 1456 | 245 234 7 |
| 1239 459 6 | 7 158 1458 | 24589 23489 245 |
+------------------+---------------+-----------------+
| 4 1 23 | 5 7 9 | 23 6 8 |
| 23 678 9 | 168 4 168 | 237 5 12 |
| 5 678 78 | 3 2 168 | 479 1479 14 |
+------------------+---------------+-----------------+

Could not find an elegant solve. My logic was that if r5c3 ==3,
then r5c4 <>2 so R4c4=2. And if r5c3 ==3 and thus <>1, then c1r12 <> 1, and there is no value possible for r4c1.
R5c3 <>3 means r6c1 =3, from there everything falls out.
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Marty R.



Joined: 12 Feb 2006
Posts: 5162
Location: Rochester, NY, USA

PostPosted: Sat May 10, 2014 6:47 pm    Post subject: Reply with quote

Dave, the May 9 puzzle is an H, not VH.

This is your grid, aligned. (There's an article in the Site Help sub-forum on aligning a grid).

Code:
+------------------+---------------+-----------------+
| 179  45789 14578 | 1489 6   2    | 4578  1478  3   |
| 179  2     14578 | 1489 3   1458 | 6     1478  145 |
| 6    3     1458  | 148  158 7    | 2458  1248  9   |
+------------------+---------------+-----------------+
| 279  4579  2457  | 248  58  3    | 1     2489  6   |
| 8    45    12345 | 1246 9   1456 | 245   234   7   |
| 1239 459   6     | 7    158 1458 | 24589 23489 245 |
+------------------+---------------+-----------------+
| 4    1     23    | 5    7   9    | 23    6     8   |
| 23   678   9     | 168  4   168  | 237   5     12  |
| 5    678   78    | 3    2   168  | 479   1479  14  |
+------------------+---------------+-----------------+


I hope I got it right. The first thing is to note that there's a quint in box 4. After making the eliminations therefrom I don't know how far that goes toward solving, but one step at a time.
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arkietech



Joined: 31 Jul 2008
Posts: 1727
Location: Northwest Arkansas USA

PostPosted: Sat May 10, 2014 7:02 pm    Post subject: Reply with quote

Marty R. wrote:
Dave, the May 9 puzzle is an H, not VH.

This is your grid, aligned. (There's an article in the Site Help sub-forum on aligning a grid).

Code:
+------------------+---------------+-----------------+
| 179  45789 14578 | 1489 6   2    | 4578  1478  3   |
| 179  2     14578 | 1489 3   1458 | 6     1478  145 |
| 6    3     1458  | 148  158 7    | 2458  1248  9   |
+------------------+---------------+-----------------+
| 279  4579  2457  | 248  58  3    | 1     2489  6   |
| 8    45    12345 | 1246 9   1456 | 245   234   7   |
| 1239 459   6     | 7    158 1458 | 24589 23489 245 |
+------------------+---------------+-----------------+
| 4    1     23    | 5    7   9    | 23    6     8   |
| 23   678   9     | 168  4   168  | 237   5     12  |
| 5    678   78    | 3    2   168  | 479   1479  14  |
+------------------+---------------+-----------------+


I hope I got it right. The first thing is to note that there's a quint in box 4. After making the eliminations therefrom I don't know how far that goes toward solving, but one step at a time.


Look for something hidden in block 4 for solution
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dizzy dave



Joined: 02 Apr 2012
Posts: 5

PostPosted: Sat May 10, 2014 10:30 pm    Post subject: Reply with quote

Thanks Marty and Arki. Now that it's pointed out it's plain as day. The fact that only two cells in block 4 can be 1 or 3 does solve it.

And next time I'll align. I started to this time but decided I was making it worse. I think I need a new brand of coffee.
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