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Clement
Joined: 24 Apr 2006 Posts: 1110 Location: Dar es Salaam Tanzania
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Posted: Tue Dec 06, 2011 10:58 pm Post subject: Dec 7 VH |
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XY-Wing 257 pivoted in r3c3; r5c1<>7 solves it. |
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arkietech
Joined: 31 Jul 2008 Posts: 1834 Location: Northwest Arkansas USA
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Posted: Wed Dec 07, 2011 11:23 am Post subject: |
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also solves it Code: | *-----------------------------------------------------------*
| 27 137 4 | 123 6 13 | 9 5 8 |
| 6 358 9 | 7 58 358 | 4 2 1 |
| 258 158 25 | 1258 9 4 | 7 6 3 |
|-------------------+-------------------+-------------------|
| 3 9 *57 | 6 *57 2 | 8 1 4 |
| 17 4 6 | 138 178 1378 | 5 9 2 |
| 15 2 8 | 159 4 159 | 3 7 6 |
|-------------------+-------------------+-------------------|
| 9 578 1 | 4 2 578 | 6 3 57 |
| 4 *57 3 | 15 *157 6 | 2 8 9 |
| 2578 6 25-7 | 589 3 5789 | 1 4 57 |
*-----------------------------------------------------------*
skyscraper
(7)r4c3=(7)r4c5-(7)r8c5=(7)r8c2 => r9c3<>7 |
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