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Jan 30 VH
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Wed Feb 03, 2010 5:11 am    Post subject: Reply with quote
Stan,

There is no "basics" solution to this puzzle. With basics, you get here:
Code:
+-------------+-------------+-------------+
| 8   15  4   | 25  9   3   | 12  7   6   |
| 16  169 2   | 4   8   7   | 3   19  5   |
| 7   359 35  | 256 56  1   | 4   29  8   |
+-------------+-------------+-------------+
| 16  156 9   | 7   4   568 | 28  26  3   |
| 3   2   56  | 9   156 568 | 18  4   7   |
| 4   78  78  | 3   16  2   | 5   16  9   |
+-------------+-------------+-------------+
| 5   467 67  | 8   2   46  | 9   3   1   |
| 9   46  1   | 56  3   456 | 7   8   2   |
| 2   38  38  | 1   7   9   | 6   5   4   |
+-------------+-------------+-------------+

The X-wing in C35 removes three candidates 5 in R35.

Then you have a choice of a couple of XY-wings, or an XYZ- wing. All of them are in a few cells in R56.

Keith
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Stanley P



Joined: 27 Feb 2008
Posts: 20
Location: Tennessee, USA
PostPosted: Wed Feb 03, 2010 5:18 am    Post subject: Reply with quote
Keith,

I did not see the X wing and resorted to all sorts of other stuff. It's clear to me now.

Thanks.
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Stanley P



Joined: 27 Feb 2008
Posts: 20
Location: Tennessee, USA
PostPosted: Wed Feb 03, 2010 5:50 am    Post subject: Reply with quote
Keith,

I did not see the X wing and resorted to all sorts of other stuff. It's clear to me now.

Thanks.
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