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hughwill
Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK
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 Posted: Sun Jan 17, 2016 11:00 am Post subject: Jan 17 VH |
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After basics: | Code: |
+---------------+--------------+-------------------+
| 5 7 2 | 49 1 3 | 689 469 489 |
| 9 34 34 | 8 5 6 | 7 2 1 |
| 18 6 18 | 479 47 2 | 39 5 349 |
+---------------+--------------+-------------------+
| 126 24 1467 | 3 9 47 | 15 8 257 |
| 3 29 5 | 1 27 8 | 4 79 6 |
| 12 8 1479 | 247 6 5 | 139 379 2379 |
+---------------+--------------+-------------------+
| 268 1 3689 | 5 2347 479 | 3689 34679 34789 |
| 4 2359 3689 | 27 237 1 | 35689 3679 35789 |
| 7 359 39 | 6 8 49 | 2 1 3459 |
+---------------+--------------+-------------------+
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Play this puzzle online at the Daily Sudoku site
So simple it took me ages to see the 47-2 XY wing pivot r4c6:: r5c2<>2
and basics from then on.
Hugh |
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George Woods
Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
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| Posted: Sun Jan 17, 2016 6:32 pm Post subject: a wwing solution |
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| The W Wing in 47 in boxes 2 and 5 operating 4s on col 4 so that r5c5 cannot be 7 sse |
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hughwill
Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK
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| Posted: Mon Jan 18, 2016 10:33 am Post subject: Re: a wwing solution |
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| George Woods wrote: | | The W Wing in 47 in boxes 2 and 5 operating 4s on col 4 so that r5c5 cannot be 7 sse |
That looks a bit more complicated than a W wing due to the
two candidate 4s in b2c4, or am I mistaken? It still works
of course!
Hugh |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Jan 18, 2016 3:35 pm Post subject: Re: a wwing solution |
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| hughwill wrote: | | George Woods wrote: | | The W Wing in 47 in boxes 2 and 5 operating 4s on col 4 so that r5c5 cannot be 7 sse |
That looks a bit more complicated than a W wing due to the
two candidate 4s in b2c4, or am I mistaken? It still works
of course!
Hugh |
I think that's called a grouped strong link. It's not that complicated if you train yourself to look for grouped links in addition to regular. First time I saw one I questioned it, "hey that's not a strong link." (It's easy to learn that way!) |
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