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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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 Posted: Mon Jun 04, 2007 8:37 pm Post subject: March 18, 2007 Very Hard |
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I've been trying March 18, 2007 Very Hard. I've been staring at the thing and I'm sure I've tried every wing or skyscraper possibility - but I can't get past this point. Maybe I can't see the woods for the trees.
+----------+---------+----------+
| 4 5 2 | 3 7 8 | 1 9 6 |
| 9 7 1 | 4 6 2 | 8 3 5 |
| 6 3 8 | 9 1 5 | 27 4 27|
+---------+----------+----------+
| 8 69 3| 27 29 1 | 5 67 4|
| 7 146 46| 8 5 3 | 26 12 9|
| 2 19 5| 6 4 79 | 3 178 178|
+----------+----------+-----------+
| 5 8 67 | 1 3 4 | 9 267 27|
| 1 426 469| 27 8 69 |67 5 3 |
| 3 26 679| 5 29 67 | 4 18 18 |
+-----------+----------+-----------+ |
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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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| Posted: Mon Jun 04, 2007 9:15 pm Post subject: |
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| ...whoops I missed the pair of 27s in col 9... but that still doesn't seem to help |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Jun 04, 2007 9:19 pm Post subject: |
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| Code: | +----------+---------+----------+------
| 4 5 2 | 3 7 8 | 1 9 6 |
| 9 7 1 | 4 6 2 | 8 3 5 |
| 6 3 8 | 9 1 5 | 27 4 27 |
+---------+----------+----------+------
| 8 69 3 | 27 29 1 | 5 67 4 |
| 7 146 46 | 8 5 3 | 26 12 9 |
| 2 19 5 | 6 4 79 | 3 178 178|
+----------+----------+-----------+----
| 5 8 67 | 1 3 4 | 9 267 27 |
| 1 426 469| 27 8 69 | 67 5 3 |
| 3 26 679| 5 29 67 | 4 18 18 |
+-----------+----------+-----------+--- |
The first thing I noticed may not be what the puzzle has incorporated into its construction, but look at the 18 rectangle in boxes 6 and 9. To avoid the "deadly pattern", either r6c8 or r6c9 must be a 7, thus eliminating the 7 from r6c6.
P.S. I just saw your post and I didn't notice that pair either. Now r6c8 must be 7 because the other three corners of the rectangle are 18. |
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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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| Posted: Tue Jun 05, 2007 7:58 pm Post subject: |
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I've cracked skyscrapers, xy wings and xyz wings - but "deadly patterns" and "unique rectangles" are something new. Regardless, it does work.
Thank you Marty.
| - - - |
| - - - | EG. the the 178 becomes a 7
| - 178 18 | (don't care why - it just does!!)
+-------------+
| - - - |
| - - - |
| - 18 18 |
+-------------+-- |
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