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Clement
Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
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 Posted: Wed Sep 28, 2011 11:04 pm Post subject: Sep 29 VH |
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| XY-Wing 39 34 49 pivoted in r2c1 or the same in r4c1 sets r4c4<>9 or r2c4<>4 respectively solving it. |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Thu Sep 29, 2011 9:18 am Post subject: |
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| Code: | *--------------------------------------------------*
| 5 79 47 | 6 249 3 | 19 129 8 |
| 34 2 1 | 49 8 5 | 6 7 39 |
| 6 89 *38 | 1 29 7 | 5 *239 4 |
|----------------+----------------+----------------|
| 39 1 6 | 49 349 2 | 8 5 7 |
| 2 78 78 | 5 39 6 | 4 *39 1 |
| 349 5 *34 | 7 1 8 | 2 6 9-3 |
|----------------+----------------+----------------|
| 8 6 9 | 3 5 1 | 7 4 2 |
| 1 4 5 | 2 7 9 | 3 8 6 |
| 7 3 2 | 8 6 4 | 19 19 5 |
*--------------------------------------------------*
Skyscraper |
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George Woods
Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
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| Posted: Thu Sep 29, 2011 10:58 am Post subject: an Er solution |
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| consider the 3s in Block 1 and SL3s in col 9. r6c3 cannot be 3 for if so there would be no place for 3s in Block 1 |
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